Skip to Content
Version 186.1 by Karry Zhuang on 2024/09/24 14:28
Show last authors
1 (% style="text-align:center" %)
2 [[image:image-20240909141930-3.png]]
3
4
5
6
7 **Table of Contents:**
8
9 {{toc/}}
10
11
12
13
14
15 = 1. Introduction =
16
17 == 1.1 Overview ==
18
19
20 (((
21 WQS-NB is a Main Unit is advanced instruments designed for comprehensive (% style="color:blue" %)**water quality monitoring across various applications**(%%). They are ideal for (% style="color:blue" %)**monitoring tap water, industrial water, environmental water, and wastewater**(%%),etc,which ofer precise and reliable measurements to ensure water quality standards are met.
22
23 WQS-NB is a (% style="color:blue" %)**Main Unit supports 1-3 probes**(%%). supports connecting 1 to 3 water quality probes, including EC, pH, DO, ORP, and TS probes.
24
25 The Dragino WQS-NB is a (% style="color:blue" %)**NB-IoT Analog Sensor**(%%) for Internet of Things solution. PS-NB-NA has 5v and 12v output, 4~~20mA, 0~~30v input interface to power and get value from Analog Sensor. WQS-NB will convert the Analog Value to NB-IoT wireless data and send to IoT platform via NB-IoT network.
26
27 WQS-NB supports different uplink methods including (% style="color:blue" %)**MQTT, MQTTs, UDP & TCP**(%%) for different application requirement, and support uplinks to various IoT Servers.
28
29 WQS-NB supports (% style="color:blue" %)**BLE con­figure and wireless OTA update**(%%) which makes user easy to use.
30
31 WQS-NB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%) , it is designed for long-term use up to several years.
32 )))
33
34
35 == 1.2 Specifications ==
36
37
38 (% style="color:#037691" %)**Common DC Characteristics:**
39
40 * Supply Voltage: Built-in Battery , 2.5v ~~ 3.6v
41 * Operating Temperature: -40 ~~ 85°C
42
43 (% style="color:#037691" %)**I/O Interface:**
44
45 * Battery controllable output (2.6v ~~ 3.6v depends on battery)
46 * +12v controllable output
47 * 1 x RS485 Interface
48 * 1 x UART Interface , 3.3v or 5v or 12v
49 * 1 x Interrupt or Digital IN pins
50 * 1 x I2C Interface
51 * 1 x one wire interface
52
53 (% style="color:#037691" %)**LoRa Spec:**
54
55 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
56 * Max +22 dBm constant RF output vs.
57 * RX sensitivity: down to -139 dBm.
58 * Excellent blocking immunity
59
60 (% style="color:#037691" %)**Battery:**
61
62 * Li/SOCI2 un-chargeable battery
63 * Capacity: 8500mAh
64 * Self-Discharge: <1% / Year @ 25°C
65 * Max continuously current: 130mA
66 * Max boost current: 2A, 1 second
67
68 (% style="color:#037691" %)**Power Consumption**
69
70 * Sleep Mode: 5uA @ 3.3v
71 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
72
73 == 1.3 Features ==
74
75
76 * LoRaWAN 1.0.3 Class A
77 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
78 * Ultra-low power consumption
79 * Measure water quality and provide information for water quality conditions
80 * Support EC / PH / DO / ORP/ TS Type Water Quality Probe
81 * Support 1 ~~ 3 probes
82 * Support Bluetooth v5.1 and LoRaWAN remote configure
83 * Support wireless OTA update firmware
84 * AT Commands to change parameters
85 * Uplink on periodically
86 * Downlink to change configure
87 * 8500mAh Li/SOCl2 Battery
88
89 == 1.4 Applications ==
90
91
92 * Smart Buildings & Home Automation
93 * Logistics and Supply Chain Management
94 * Smart Metering
95 * Smart Agriculture
96 * Smart Cities
97 * Smart Factory
98
99 == 1.5 Sleep mode and working mode ==
100
101
102 (% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.
103
104 (% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.
105
106
107 == 1.6 Button & LEDs ==
108
109 [[image:image-20240726162917-1.png||height="480" width="304"]]
110
111
112 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
113 |=(% style="width: 167px;background-color:#4F81BD;color:white" %)**Behavior on **ACT|=(% style="width: 117px;background-color:#4F81BD;color:white" %)Function|=(% style="width: 225px;background-color:#4F81BD;color:white" %)Action
114 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
115
116
117 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, blue led will blink once.
118 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
119 )))
120 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
121
122
123 Green led will fast blink 5 times, device will enter OTA mode for 3 seconds. And then start to JOIN LoRaWAN network.
124 Green led will solidly turn on for 5 seconds after joined in network.
125 Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.
126 )))
127 |(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)Red led will solid on for 5 seconds. Means device is in Deep Sleep Mode.
128
129 == 1.7 BLE connection ==
130
131
132 RS485-LB/LS supports BLE remote configure.
133
134
135 BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:
136
137 * Press button to send an uplink
138 * Press button to active device.
139 * Device Power on or reset.
140
141 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
142
143
144 == 1.8 Pin Definitions ==
145
146
147 [[image:image-20240715164447-1.png]]
148
149
150 === 1.8.1 SW2 Jumper (Define UART level to external Sensor) ===
151
152
153 SW2 defines the voltage level of BOARD_RX and BOARD_TX pins. It should match the external sensor voltage level
154
155
156
157 == 1.9 Mechanical ==
158
159 (% class="wikigeneratedid" id="H" %)
160 [[image:image-20240726163016-2.png||height="506" width="829"]]
161
162 = 2. How to use =
163
164 == 2.1 Example to use for LoRaWAN network ==
165
166
167 This section shows an example for how to join the TTN V3 LoRaWAN IoT server. Usages with other LoRaWAN IoT servers are of similar procedure.
168
169
170 [[image:image-20240806155833-1.png||height="409" width="938"]]
171
172 Assume the DLOS8 is already set to connect to [[TTN V3 network >>url:https://eu1.cloud.thethings.network/]]. We need to add the WQS-LB device in TTN V3:
173
174
175 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from WQS-LB.
176
177 Each WQS-LB is shipped with a sticker with the default device EUI as below:
178
179 [[image:image-20230426084533-1.png||height="231" width="497"]]
180
181
182 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
183
184
185 **Add APP EUI in the application.**
186
187 [[image:1656042662694-311.png]]
188
189 [[image:1656042673910-429.png]]
190
191
192 **Choose Manually to add WQS-LB**
193
194 [[image:1656042695755-103.png]]
195
196
197 **Add APP KEY and DEV EUI**
198
199 [[image:1656042723199-746.png]]
200
201
202 (((
203 (% style="color:blue" %)**Step 2**(%%): Power on WQS-LB, it will start to join TTN server. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
204 )))
205
206 [[image:1656042745346-283.png]]
207
208
209 == 2.2 Uplink Payload ==
210
211
212 Uplink payloads include two types: Valid Sensor Value and other status / control command.
213
214 * Valid Sensor Value: Use FPORT=2
215 * Other control command: Use FPORT other than 2.
216
217 === 2.2.1 Uplink FPORT~=5, Device Status ===
218
219
220 Uplink the device configures with FPORT=5. Once WQS-LB Joined the network, it will uplink this message to the server. After first uplink, WQS-LB will uplink Device Status every 12 hours
221
222
223 (((
224 User can also use downlink command**(0x2301)** to ask WQS-LB to resend this uplink
225 )))
226
227 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
228 |=(% style="width: 70px;background-color:#4F81BD;color:white" %)**Size(**bytes)|=(% style="width: 70px;background-color:#4F81BD;color:white" %)1|=(% style="width: 80px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 80px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 60px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 40px;background-color:#4F81BD;color:white" %)**2**
229 |(% style="width:99px" %)Value|(% style="width:112px" %)[[Sensor Model>>||anchor="HSensorModel:"]]|(% style="width:135px" %)[[Firmware Version>>||anchor="HFirmwareVersion:"]]|(% style="width:126px" %)[[Frequency Band>>||anchor="HFrequencyBand:"]]|(% style="width:85px" %)[[Sub-band>>||anchor="HSub-Band:"]]|(% style="width:46px" %)[[BAT>>||anchor="HBAT:"]]
230
231 [[image:image-20240726164903-3.png]]
232
233
234 Example Payload (FPort=5):  3C 01 00 01 00 0D C8
235
236
237 ==== (% style="color:#037691" %)**Sensor Model:**(%%) ====
238
239 For WQS-LB, this value is 0x3C.
240
241
242 ==== (% style="color:#037691" %)**Firmware Version:**(%%) ====
243
244 0x0100, Means: v1.0.0 version.
245
246
247 ==== (% style="color:#037691" %)**Frequency Band:**(%%) ====
248
249 0x01: EU868
250
251 0x02: US915
252
253 0x03: IN865
254
255 0x04: AU915
256
257 0x05: KZ865
258
259 0x06: RU864
260
261 0x07: AS923
262
263 0x08: AS923-1
264
265 0x09: AS923-2
266
267 0x0a: AS923-3
268
269 0x0b: CN470
270
271 0x0c: EU433
272
273 0x0d: KR920
274
275 0x0e: MA869
276
277
278 ==== (% style="color:#037691" %)**Sub-Band:**(%%) ====
279
280 value 0x00 ~~ 0x08(only for CN470, AU915,US915. Others are0x00)
281
282
283 ==== (% style="color:#037691" %)**BAT:**(%%) ====
284
285 (((
286 shows the battery voltage for WQS-LB MCU.
287 )))
288
289 (((
290 Ex1: 0x0DC8/1000 = 3.528 V
291 )))
292
293
294 === 2.2.2 Uplink FPORT~=2, Real time sensor value ===
295
296
297
298 (((
299 WQS-LB will send this uplink after Device Config uplink once join LoRaWAN network successfully. And it will periodically send this uplink. Default interval is 20 minutes and [[can be changed>>||anchor="H3.1SetTransmitIntervalTime"]].
300 )))
301
302 (((
303 Uplink uses FPORT=2 and every 20 minutes send one uplink by default.
304 )))
305
306 (((
307 The upload length is dynamic, depends on what type of weather sensors are connected. The uplink payload is combined with sensor segments. As below:
308 )))
309
310 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
311 |=(% style="width: 60px; background-color: rgb(79, 129, 189); color: white;" %)**Size(**bytes)|=(% style="width: 25px; background-color: rgb(79, 129, 189); color: white;" %)2|=(% style="width: 95px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 45px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 70px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 30px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 35px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 30px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 20px;background-color:#4F81BD;color:white" %)**2**
312 |(% style="width:89px" %)Value|(% style="width:46px" %)BAT|(% style="width:135px" %)(((
313 temperature DS18B20
314 )))|(% style="width:126px" %)(((
315 flag and Sensor Identifier
316 )))|(% style="width:85px" %)turbidity|(% style="width:46px" %)(((
317 dissolved oxygen
318 )))|(% style="width:46px" %)ORP|(% style="width:46px" %)ECK10|(% style="width:46px" %)ECK1|(% style="width:46px" %)PH
319
320 (((
321 [[image:image-20240725144225-1.png||height="49" width="969"]]
322
323 (% style="color:#4472c4" %)**Payload Example(FPort=2):**(%%)0CDE 0CCC 29 01E7 00A8 03AA
324
325 One WQS-LB can connect three sensors, and obviously I connected a PH ORP turbidity sensor.
326
327
328 ==== (% style="color:#037691" %)**BAT:**(%%) ====
329
330 (((
331 shows the battery voltage for WQS-LB MCU.
332 )))
333
334 (((
335 Ex1: 0x0CDE/1000 = 3.294 V
336 )))
337
338
339 ==== (% style="color:#037691" %)**Temperature:**(%%) ====
340
341 This is the data of the external DS18B20 temperature sensor.
342
343 If the DS18B12 sensor is not connected, it will display:0CCC/10 =327.60°C
344
345
346 ==== (% style="color:#037691" %)**flag and Sensor Identifier:**(%%) ====
347
348 The flag and Sensor Identifier uses a hexadecimal byte, which becomes 8 digits when converted to binary.
349
350 Example:0x29=0010 1001
351
352 00 indicates the interrupt identifier.
353
354 The remaining six digits represent the identifier of the turbidity, dissolved oxygen, ORP, ECK10, ECK1, and pH sensor in order.
355
356 101001 means that I have connected three sensors: turbidity, ORP, and pH.
357
358
359 ==== (% style="color:#037691" %)**Sensor data:**(%%) ====
360
361 turbidity:0x01E7/10=48.7
362
363 ORP:0x00A8=168
364
365 pH:0x03AA/100=9.38
366
367
368 )))
369
370 === 2.2.3 Decoder in TTN V3 ===
371
372
373 (((
374 In LoRaWAN platform, user only see HEX payload by default, user needs to use payload formatters to decode the payload to see human-readable value.
375 )))
376
377 (((
378 Download decoder for suitable platform from:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
379 )))
380
381 (((
382 and put as below:
383 )))
384
385 [[image:1656051152438-578.png]]
386
387
388 == 2.3 Show data on Application Server ==
389
390
391 (((
392 Application platform provides a human friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
393 )))
394
395 (((
396 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
397 )))
398
399 (((
400 (% style="color:blue" %)**Step 2**(%%): Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.
401 )))
402
403 [[image:1656051197172-131.png]]
404
405
406 **Add TagoIO:**
407
408 [[image:1656051223585-631.png]]
409
410
411 **Authorization:**
412
413 [[image:1656051248318-368.png]]
414
415
416 In TagoIO console ([[https:~~/~~/admin.tago.io~~/~~/>>url:https://datacake.co/]]) , add WQS-LB:
417
418 [[image:1656051277767-168.png]]
419
420
421 = 3. Configure WQS-LB via AT Command or LoRaWAN Downlink =
422
423
424 Use can configure WQS-LB via AT Command or LoRaWAN Downlink.
425
426 * AT Command Connection: See [[FAQ>>||anchor="H7.FAQ"]].
427 * LoRaWAN Downlink instruction for different platforms:  [[Use Note for Server>>doc:Main.WebHome]](IoT LoRaWAN Server)
428
429 There are two kinds of commands to configure WQS-LB, they are:
430
431 * (% style="color:blue" %)**General Commands**.
432
433 These commands are to configure:
434
435 * General system settings like: uplink interval.
436 * LoRaWAN protocol & radio related command.
437
438 They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack((% style="color:red" %)Note~*~*)(%%). These commands can be found on the wiki:  [[End Device Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
439
440 (% style="color:red" %)**Note~*~*: Please check early user manual if you don’t have v1.8.0 firmware. **
441
442
443 * (% style="color:blue" %)**Commands special design for WQS-LB**
444
445 These commands only valid for WQS-LB, as below:
446
447
448 == 3.1 Set Transmit Interval Time ==
449
450
451 Feature: Change LoRaWAN End Node Transmit Interval.
452
453 (% style="color:#037691" %)**AT Command: AT+TDC**
454
455 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:501px" %)
456 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:166px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:180px" %)**Response**
457 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)(((
458 30000
459 OK
460 the interval is 30000ms = 30s
461 )))
462 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)(((
463 OK
464 Set transmit interval to 60000ms = 60 seconds
465 )))
466
467 (% style="color:#037691" %)**Downlink Command: 0x01**
468
469 Format: Command Code (0x01) followed by 3 bytes time value.
470
471 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
472
473 * Example 1: Downlink Payload: 0100001E  ~/~/  Set Transmit Interval (TDC) = 30 seconds
474 * Example 2: Downlink Payload: 0100003C  ~/~/  Set Transmit Interval (TDC) = 60 seconds
475
476 == 3.2 Set Interrupt Mode ==
477
478
479 (% style="color:#037691" %)**AT Command:AT+INTMOD**
480
481 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
482 |=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 197px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Response**
483 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
484 0
485 OK
486 the mode is 0 =Disable Interrupt
487 )))
488 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
489 Set Transmit Interval
490 0. (Disable Interrupt),
491 ~1. (Trigger by rising and falling edge)
492 2. (Trigger by falling edge)
493 3. (Trigger by rising edge)
494 )))|(% style="width:157px" %)OK
495
496 == 3.3 Set Power Output Duration ==
497
498
499 (((
500 (% style="color:#037691" %)**AT Command: **
501 )))
502
503 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
504 |=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 197px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Response**
505 |(% style="width:154px" %)AT+5VT=?|(% style="width:196px" %)Show 5V open time.|(% style="width:157px" %)0 (default)
506 OK
507 |(% style="width:154px" %)AT+5VT=1000|(% style="width:196px" %)Close after a delay of 1000 milliseconds.|(% style="width:157px" %)OK
508
509 (% style="color:#037691" %)**Downlink Command:  **
510
511 Format: Command Code (0x07) followed by 2 bytes.
512
513 The first and second bytes are the time to turn on.
514
515 * Example 1: Downlink Payload: 070000  **~-~-->**  AT+5VT=0
516 * Example 2: Downlink Payload: 0701F4  **~-~-->**  AT+5VT=500
517
518 == 3.4 Sensor Calibration Commands ==
519
520
521 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
522 |=(% style="width: 170px; background-color: rgb(79, 129, 189); color: white;" %)**Command Example**|=(% style="width: 180px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 160px; background-color: rgb(79, 129, 189); color: white;" %)**Response**
523 |(% style="width:160px" %)AT+CALPH=xx |(% style="width:179px" %)(((
524 Parameter 4 6 9
525
526 downlink: 0xFB XX
527 )))|(% style="width:214px" %)(((
528 4:10 06 00 22 07 24 28 aa
529
530 6:10 06 00 21 07 4e 58 85
531
532 9:10 06 00 20 08 bc 8d 30
533 )))
534 |(% style="width:160px" %)AT+CALORP=xx|(% style="width:179px" %)Parameter 86 256 downlink:0xFC XX XX|(% style="width:214px" %)(((
535 86:13 06 00 24 07 dc c9 1a
536
537 256:13 06 00 25 07 37 d8 95
538 )))
539 |(% style="width:160px" %)AT+CALEC=xx|(% style="width:179px" %)Parameter 1 10 downlink:0xFD XX|(% style="width:214px" %)(((
540 1:12 01 00 26 00 02 5E A3
541
542 10:11 06 00 26 00 02 EB 50
543 )))
544 |(% style="width:160px" %)AT+CALNTU=xx|(% style="width:179px" %)(((
545 Parameters 0 2 4 6 8 10
546
547 downlink: 0xFE XX
548 )))|(% style="width:214px" %)(((
549 0:15 06 00 5E 00 01 2A CC
550
551 2:15 06 00 5E 00 02 6A CD
552
553 4:15 06 00 5E 00 03 AB 0D
554
555 6:15 06 00 5E 00 04 EA CF
556
557 8:15 06 00 5E 00 05 2B 0F
558
559 10:15 06 00 5E 00 06 6B 0E
560 )))
561
562 = 4. Water Qualit Sensors =
563
564 == 4.1  PH Sensor ==
565
566
567 (((
568 PH01 is a device for measuring the pH value (hydrogen ion concentration index, acidity and alkalinity) of a solution.
569
570 It adopts an integrated design, is lighter and simpler in structure, and is more convenient to use. The waterproof grade is IP68.
571
572 The reference electrode adopts a double salt bridge design, which has stronger anti-pollution ability.
573
574 This product is suitable for industrial sewage, domestic sewage, agriculture, aquaculture and other scenes in non-corrosive weak acid and weak alkali environments.
575 )))
576
577
578 === 4.1.1 Feature ===
579
580
581 * pH measurement range 0~~14pH, resolution 0.01pH.
582 * One-piece design, light and simple structure, easy to use.
583 * The reference adopts a double salt bridge design, which has stronger anti-pollution ability and waterproof grade IP68.
584 * The equipment adopts a wide voltage power supply DC 7~~30V.
585
586 === 4.1.2 Specification ===
587
588
589 * Power supply: DC7~~30V
590 * Power consumption: ≤0.5W
591 * Communication interface: RS485; standard MODBUS-RTU protocol; communication baud rate: default 9600
592 * pH measurement range: 0~~14.00pH; resolution: 0.01pH
593 * pH measurement error: ±0.15pH
594 * Repeatability error: ±0.02pH
595 * Equipment working conditions: Ambient temperature: 0-60℃
596 * Waterproof grade: IP68
597 * Pressure resistance: 0.6MPa
598
599 === 4.1.3 Dimension ===
600
601
602 [[image:image-20240715181651-3.png||height="223" width="562"]]
603
604
605 === 4.1.4 Installation Notice ===
606
607
608 (((
609 Do not power on while connect the cables. Double check the wiring before power on.
610 )))
611
612 (((
613 Installation Photo as reference:
614 )))
615
616
617 (((
618 (% style="color:#4472c4" %)** Submerged installation:**
619 )))
620
621 (((
622 The lead wire of the equipment passes through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected to the 3/4 thread of the waterproof pipe with raw tape. Ensure that the top of the equipment and the equipment wire are not flooded.
623
624
625 [[image:image-20240715181933-4.png||height="281" width="258"]]
626 )))
627
628
629 (((
630 (% style="color:#4472c4" %)** Pipeline installation:**
631 )))
632
633 (((
634 Connect the equipment to the pipeline through the 3/4 thread.
635 )))
636
637 [[image:image-20240715182122-6.png||height="291" width="408"]]
638
639
640 (% style="color:#4472c4" %)**Sampling:**
641
642 Take representative water samples according to sampling requirements. If it is inconvenient to take samples, you can also put the electrode into the solution to be tested and read the output data. After a period of time, take out the electrode and clean it.
643
644
645 (% style="color:#4472c4" %)**Measure the pH of the water sample:**
646
647 First rinse the electrode with distilled water, then rinse it with the water sample, then immerse the electrode in the sample, carefully shake the test cup or stir it to accelerate the electrode balance, let it stand, and record the pH value when the reading is stable.
648
649
650 === 4.1.5 Maintenance ===
651
652
653 * The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself. Contact us as soon as possible!
654 * There is an appropriate amount of soaking solution in the protective bottle at the front end of the electrode. The electrode head is soaked in it to keep the glass bulb and the liquid junction activated. When measuring, loosen the bottle cap, pull out the electrode, and rinse it with pure water before use.
655 * Preparation of electrode soaking solution: Take a packet of PH4.00 buffer, dissolve it in 250 ml of pure water, and soak it in 3M potassium chloride solution. The preparation is as follows: Take 25 grams of analytical pure potassium chloride and dissolve it in 100 ml of pure water.
656 * The glass bulb at the front end of the electrode cannot come into contact with hard objects. Any damage and scratches will make the electrode ineffective.
657 * Before measurement, the bubbles in the electrode glass bulb should be shaken off, otherwise it will affect the measurement. When measuring, the electrode should be stirred in the measured solution and then placed still to accelerate the response.
658 * The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
659 * After long-term use, the pH electrode will become passivated, which is characterized by a decrease in sensitivity gradient, slow response, and inaccurate readings. At this time, the bulb at the bottom of the electrode can be soaked in 0.1M dilute hydrochloric acid for 24 hours (0.1M dilute hydrochloric acid preparation: 9 ml of hydrochloric acid is diluted to 1000 ml with distilled water), and then soaked in 3.3M potassium chloride solution for 24 hours. If the pH electrode is seriously passivated and soaking in 0.1M hydrochloric acid has no effect, the pH electrode bulb can be soaked in 4% HF (hydrofluoric acid) for 3-5 seconds, washed with pure water, and then soaked in 3.3M potassium chloride solution for 24 hours to restore its performance.
660 * Glass bulb contamination or liquid junction blockage can also cause electrode passivation. At this time, it should be cleaned with an appropriate solution according to the nature of the contaminant.
661 * (((
662 The equipment should be calibrated before each use. For long-term use, it is recommended to calibrate once every 3 months. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). After aging, the electrodes should be replaced in time.
663 )))
664
665 === 4.1.6 Calibration ===
666
667
668 This device uses three-point calibration, and three known PH standard solutions need to be prepared.
669
670 (% style="color:#4472c4" %)**The steps are as follows:**
671
672 (1) Wash the electrode in distilled water, and put it in 9.18 standard buffer solution. After the data stabilizes, enter the following calibration command, that is, 9.18 calibration is completed. (% style="color:#4472c4" %)**"AT+CALPH=9" downlink:0xFB 09**(%%)
673
674
675 (2) Wash the electrode in distilled water, and put it in 6.86 standard buffer solution. After the data stabilizes, enter the following calibration command, that is, 6.86 calibration is completed; (% style="color:#4472c4" %)**"AT+CALPH=6" downlink:0xFB 06**(%%)
676
677
678 (3) Wash the electrode in distilled water, and put it in 4.01 standard buffer solution. After the data stabilizes, enter the following calibration command, that is, 4.00 calibration is completed. (% style="color:#4472c4" %)**"AT+CALPH=4" downlink:0xFB 04**(%%)
679
680
681
682
683 == 4.2 EC Sensor ==
684
685
686 EC K1/K10 is a device for measuring the conductivity of solutions. EC K1/K10 adopts an integrated design, which is lighter and simpler in structure and more convenient to use.
687
688 The waterproof grade is IP68. It can be widely used in continuous monitoring of the conductivity of aqueous solutions such as cross-section water quality, aquaculture, sewage treatment, environmental protection, pharmaceuticals, food and tap water.
689
690 (((
691
692 )))
693
694 === 4.2.1 Feature ===
695
696
697 * Conductivity measurement range is 0-2000us/cm; 10~~20000us/cm.
698 * Integrated design, light and simple structure, easy to use.
699 * Waterproof grade IP68.
700 * With salinity and TDS conversion function.
701 * RS485 communication interface: MDDBUS RTU communication protocol can be easily connected to the computer for monitoring and communication.
702 * ModBus communication address can be set and baud rate can be modified.
703 * The device adopts wide voltage power supply, DC 7~~30V is available.
704
705 === 4.2.2 Specification ===
706
707
708 * Power supply: DC7~~30V
709 * Power consumption: ≤0.5W
710 * Communication interface: RS485; standard MODBUS-RTU protocol; communication baud rate: default 9600
711 * Conductivity measurement range: K=1: 0~~2000μs/cm; resolution: 1μs/cm K=10: 10~~20000μs/cm; resolution: 10μs/cm
712 * Conductivity measurement error: ±1%FS
713 * Equipment working conditions: Ambient temperature: 0-60℃
714 * Waterproof grade: IP68
715 * Pressure resistance: 0.6MPa
716
717 === 4.2.3 Dimension ===
718
719
720 [[image:image-20240715181651-3.png||height="223" width="562"]]
721
722
723 === 4.2.4 Installation Notice ===
724
725
726 Selection of matching electrode constant
727
728 [[image:image-20240716104100-1.png||height="349" width="641"]]
729
730
731 (% style="color:#4472c4" %)**Electrode installation form**
732
733 A:Side wall installation
734
735 B:Top flange installation
736
737 C:Pipeline bend installation
738
739 D:Pipeline bend installation
740
741 E:Flow-through installation
742
743 F:Submerged installation
744
745 [[image:image-20240716104537-2.png||height="475" width="706"]]
746
747 (% style="color:#4472c4" %)**Several common installation methods of electrodes**
748
749 When installing the sensor on site, you should strictly follow the correct installation method shown in the following picture. Incorrect installation method will cause data deviation.
750
751 A. Several common incorrect installation methods
752
753 [[image:image-20240717103452-1.png||height="320" width="610"]]
754
755 Error cause: The electrode joint is too long, the extension part is too short, the sensor is easy to form a dead cavity, resulting in measurement error.
756
757
758 [[image:image-20240716105124-4.png||height="326" width="569"]]
759
760 Error cause: Measurement error or instability may occur due to water flow not being able to fill the pipe or air accumulation at high altitudes.
761
762 B. Correct installation method
763
764 [[image:image-20240716105318-5.png||height="330" width="594"]]
765
766
767 === 4.2.5 Maintenance ===
768
769
770 * The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself, and contact us as soon as possible.
771 * If the electrode is not used for a long time, it can generally be stored in a dry place, but it must be placed (stored) in distilled water for several hours before use to activate the electrode. Electrodes that are frequently used can be placed (stored) in distilled water.
772 * Cleaning of conductivity electrodes: Organic stains on the electrode can be cleaned with warm water containing detergent, or with alcohol. Calcium and magnesium precipitates are best cleaned with 10% citric acid. The electrode plate or pole can only be cleaned by chemical methods or by shaking in water. Wiping the electrode plate will damage the coating (platinum black) on the electrode surface.
773 * The equipment should be calibrated before each use. It is recommended to calibrate it every 3 months for long-term use. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.).
774
775 === 4.2.6 Calibration ===
776
777
778 This device uses one-point calibration, and you need to prepare a known E standard solution. When the mileage K=1, 1~~2000 uses 1413uS/cm standard solution, and when the mileage K=10, 10~~20000 uses 12.88mS/cm standard solution.
779
780 (% style="color:#4472c4" %)**The steps are as follows:**
781
782 (1) Put the electrode in distilled water to clean it. When the mileage is 1~~2000, use 1413HS/cm standard solution.After the data is stable, enter the following calibration command
783
784 (% style="color:#4472c4" %)**"AT+CALEC=1" downlink:0xFD 01**
785
786 (2) Put the electrode in distilled water to clean it. When the range is 10~~20000, use 12.88mS/cm standard solution.After the data is stable, enter the following calibration command
787
788 (% style="color:#4472c4" %)**"AT+CALEC=10" downlink:0xFD 10**
789
790
791 == 4.3 ORP Sensor ==
792
793
794 (((
795 ORP01 is a device for measuring the redox potential of a solution. It uses high-purity platinum to make an ORP composite electrode, which has strong acid and alkali resistance and antioxidant capacity, and has high measurement accuracy, fast response, and good stability.
796
797 The electrode can automatically compensate according to temperature. It is suitable for online monitoring of the redox potential of cyanide-containing and chromium-containing wastewater.
798 )))
799
800
801 === 4.3.1 Feature ===
802
803
804 * ORP measurement range -1999~~1999mV, resolution 1mV.
805 * Applicable electrode temperature 0~~80℃.
806 * The electrode is made of high-purity platinum, which has strong acid and alkali resistance and antioxidant capacity, high measurement accuracy, fast response and good stability.
807 * RS485 communication interface: ModBus-RTU communication protocol can be easily connected to the computer for monitoring and communication.
808 * ModBus communication address can be set and baud rate can be modified.
809 * The equipment adopts wide voltage power supply, DC 7~~30V
810
811 === 4.3.2 Specification ===
812
813
814 * Measuring range: -1999~~1999mV
815 * Resolution: 1mV
816 * Output signal: RS485
817 * Measurement error: ±3mV
818 * Stability: ≤2mv/24 hours
819 * Equipment working conditions: Ambient temperature: 0-60℃ Relative humidity: <85%RH
820 * Waterproof grade: IP68
821 * Pressure resistance: 0.6MP
822
823 === 4.3.3 Dimension ===
824
825
826
827 [[image:image-20240715181651-3.png||height="223" width="562"]]
828
829 === 4.3.4 Installation Notice ===
830
831
832 (((
833 (% id="cke_bm_321773S" style="display:none" %) (%%)Do not power on while connect the cables. Double check the wiring before power on.
834 )))
835
836 (((
837 Installation Photo as reference:
838 )))
839
840
841 (((
842 (% style="color:#4472c4" %)** Submerged installation:**
843 )))
844
845 (((
846 The lead wire of the equipment passes through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected to the 3/4 thread of the waterproof pipe with raw tape. Ensure that the top of the equipment and the equipment wire are not flooded.
847
848
849 [[image:image-20240715181933-4.png||height="281" width="258"]]
850 )))
851
852
853 (((
854 (% style="color:#4472c4" %)** Pipeline installation:**
855 )))
856
857 (((
858 Connect the equipment to the pipeline through the 3/4 thread.
859 )))
860
861 [[image:image-20240715182122-6.png||height="291" width="408"]]
862
863 === 4.3.5 Maintenance ===
864
865
866 (1) The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself, and contact us as soon as possible.
867 (2) In general, ORP electrodes do not need to be calibrated and can be used directly. When there is doubt about the quality and test results of the ORP electrode, the electrode potential can be checked with an ORP standard solution to determine whether the ORP electrode meets the measurement requirements, and the electrode can be recalibrated or replaced with a new ORP electrode. The frequency of calibration or inspection of the measuring electrode depends on different application conditions (the degree of dirt in the application, the deposition of chemical substances, etc.).
868 (3) There is an appropriate soaking solution in the protective bottle at the front end of the electrode, and the electrode head is soaked in it to ensure the activation of the platinum sheet and the liquid junction. When measuring, loosen the bottle cap, pull out the electrode, and rinse it with pure water before use.
869 (4) Preparation of electrode soaking solution: Take 25 grams of analytical pure potassium chloride and dissolve it in 100 ml of pure water to prepare a 3.3M potassium chloride solution.
870 (5) Before measuring, the bubbles in the electrode glass bulb should be shaken off, otherwise it will affect the measurement. When measuring, the electrode should be stirred in the measured solution and then placed still to accelerate the response.
871 (6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
872 (7) After long-term use, the ORP electrode will be passivated, which is manifested as a decrease in sensitivity gradient, slow response, and inaccurate readings. At this time, the platinum sheet at the bottom of the electrode can be soaked in 0.1M dilute hydrochloric acid for 24 hours (0.1M dilute hydrochloric acid preparation: 9 ml of hydrochloric acid is diluted to 1000 ml with distilled water), and then soaked in 3.3M potassium chloride solution for 24 hours to restore its performance.
873 (8) Electrode contamination or liquid junction blockage can also cause electrode passivation. At this time, it should be cleaned with an appropriate solution according to the nature of the contaminant. If the platinum of the electrode is severely contaminated and an oxide film is formed, toothpaste can be applied to the platinum surface and then gently scrubbed to restore the platinum's luster.
874 (9) The equipment should be calibrated before each use. It is recommended to calibrate once every 3 months for long-term use. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). After aging, the electrodes should be replaced in time.
875
876
877 === 4.3.6 Calibration ===
878
879
880 OPR01 uses two-point calibration. You need to prepare two known ORP standard solutions.
881
882 (% style="color:#4472c4" %)**The steps are as follows:**(%%)
883 (1) Put the electrode in distilled water to clean it, put it in 86mV standard buffer, wait for the data to stabilize, enter the following calibration command, and the 86mV point calibration is completed.
884
885 (% style="color:#4472c4" %)**"AT+CALORP=86" downlink:0xFD 00 56**(%%)
886 (2) Put the electrode in distilled water to clean it, put it in 256mV standard buffer, wait for the data to stabilize, enter the following calibration command, and the 256mV point calibration is completed.
887
888 (% style="color:#4472c4" %)**"AT+CALORP=256" downlink:0xFD 01 00**
889
890
891 == 4.4  Dissolved Oxygen Sensor ==
892
893
894 (((
895 The fluorescence dissolved oxygen sensor is a newly developed online digital sensor, using imported components and advanced production technology and surface mounting technology.
896
897 It has an IP68 waterproof rating, and the cable is seawater-proof. It can be directly put into the water without a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
898
899 The fluorescence dissolved oxygen sensor is based on the principle of quenching active fluorescence by specific substances in physics.
900
901 The blue light from a light-emitting diode (LED) shines on the fluorescent material on the inner surface of the fluorescent cap.
902
903 The fluorescent material on the inner surface is excited and emits red light.
904
905 By detecting the phase difference between the red light and the blue light and comparing it with the internal calibration value, the concentration of oxygen molecules is calculated, and the final value is automatically compensated for temperature and air pressure.
906 )))
907
908
909 === 4.4.1 Feature ===
910
911
912 * Small size, low power consumption, easy to carry.
913 * Truly achieve low cost, low price, high performance.
914 * High integration, long life, high reliability.
915 * Up to four isolations, can resist complex interference conditions on site, waterproof level IP68.
916 * The electrode uses high-quality low-noise cable, which can make the signal output length reach more than 20 meters.
917
918 === 4.4.2 Specification ===
919
920
921 * Measuring range: 0-20mg/L, 0-50℃
922 * Accuracy: 3%, ±0.5℃
923 * Resolution: 0.01 mg/L, 0.01℃
924 * Maximum operating pressure: 6 bar
925 * Output signal: A: 4-20mA (current loop)
926 * B: RS485 (standard Modbus-RTU protocol, device default address: 01)
927 * Power supply voltage: 5-24V DC
928 * Working environment: temperature 0-60℃; humidity <95%RH
929 * Power consumption: ≤0.5W
930
931 === 4.4.3 Dimension ===
932
933
934 [[image:image-20240717105043-2.png||height="232" width="515"]]
935
936 === 4.4.4 Instructions for use and maintenance ===
937
938
939 * Sampling: Take representative water samples according to the sampling requirements.
940 * Determine dissolved oxygen in water samples: First rinse the electrode three times with distilled water, then rinse it three times with the water sample, then immerse the electrode in the sample, carefully shake the test cup or stir it to accelerate the electrode balance, let it stand, and record the dissolved oxygen when the reading is stable.
941 * If it is inconvenient to take samples, you can also put the electrode in the measured solution, wait for the measured data to stabilize, read the output data, and take out the electrode after a period of time. Clean it.
942 * After the sample measurement is completed, rinse the electrode three times with distilled water and put the electrode back in the protective solution upright.
943
944 Note: When measuring multiple samples, the electrode should be cleaned before measuring the next sample to avoid affecting the experimental data.
945
946 If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
947
948
949 === 4.4.5 Precautions ===
950
951
952 * To ensure that the electrode measures correctly on the pipeline, avoid bubbles between the measuring cells that may cause data inaccuracy.
953 * Please check whether the packaging is intact and whether the product model is consistent with the selected model.
954 * Do not connect the wires with power on. After the wiring is completed and checked, power can be turned on.
955 * Do not arbitrarily change the components or wires that have been welded at the factory when using the product.
956 * The sensor is a precision device. When using it, please do not disassemble it by yourself or contact the sensor surface with sharp objects or corrosive liquids to avoid damaging the product.
957
958 == 4.5  Turbidity Sensor ==
959
960
961 (((
962 The turbidity sensor is a newly developed online digital turbidity sensor, using imported components and advanced production technology and surface mounting technology.
963
964 It has an IP68 waterproof rating, and the cable is seawater-proof.It can be directly put into the water without a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor. This sensor probe uses a scattered light turbidity measurement method.
965
966 Since the turbidity in the water sample causes light to scatter, the intensity of the scattered light in the direction perpendicular to the incident light is measured and compared with the internal calibration value to calculate the turbidity in the water sample.
967
968 The ambient light interference is eliminated by infrared light and filters. After linearization processing, the output signal is stable and accurate.
969 )))
970
971
972 === 4.5.1 Feature ===
973
974
975 * RS485 Temperature, Humidity, Illuminance, Pressure sensor
976 * Axial capacitor filtering is used internally, and 100MΩ resistor increases impedance and enhances stability.
977 * Small size, low power consumption, and easy to carry.
978 * Truly achieve low cost, low price, and high performance.
979 * High integration, long life, and high reliability.
980 * Up to four isolations can resist complex interference conditions on site, and the waterproof level is IP68.
981 * The electrode uses high-quality low-noise cable, which can make the signal output length reach more than 20 meters
982
983 === 4.5.2 Specification ===
984
985
986 * Measuring range: 0.1～1000.0NTU
987 * Accuracy: ±5%
988 * Resolution: 0.1NTU
989 * Stability: ≤3mV/24 hours
990 * Output signal: A: 4～20 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 15)
991 * Power supply voltage: 5～24V DC (when the output signal is RS485)
992 * 12～24V DC (when the output signal is 4～20mA)
993 * Working environment: temperature 0～60℃; humidity ≤95%RH
994 * Power consumption: ≤0.5W
995
996 === 4.5.3 Dimension ===
997
998
999 [[image:image-20240717112849-3.png||height="285" width="582"]]
1000
1001
1002 === 4.5.4 Instructions for use and maintenance ===
1003
1004
1005 * It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
1006 * If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
1007
1008 === 4.5.5 Calibration ===
1009
1010
1011 For turbidity calibration, you only need to prepare a solution. You can choose 0NTU, 200NTU, 400NTU, 600NTU, 800NTU, 1000NTU, and then enter the corresponding calibration command.
1012
1013 (% style="color:#4472c4" %)**"AT+CALNTU=0" downlink:0xFE 00        **(%%)0NTU turbidity solution
1014
1015 (% style="color:#4472c4" %)**"AT+CALNTU=2" downlink:0xFE 02        **(%%)200NTU turbidity solution
1016
1017 (% style="color:#4472c4" %)**"AT+CALNTU=4" downlink:0xFE 04        **(%%)400NTU turbidity solution
1018
1019 (% style="color:#4472c4" %)**"AT+CALNTU=6" downlink:0xFE 06        **(%%)600NTU turbidity solution
1020
1021 (% style="color:#4472c4" %)**"AT+CALNTU=8" downlink:0xFE 08        **(%%)800NTU turbidity solution
1022
1023 (% style="color:#4472c4" %)**"AT+CALNTU=10" downlink:0xFE 0A     **(%%)1000NTU turbidity solution
1024
1025
1026 === 4.5.6 Precautions ===
1027
1028
1029 * To ensure that the electrode measures correctly on the pipeline, avoid bubbles between the measuring cells that may cause data inaccuracy.
1030 * Please check whether the packaging is intact and whether the product model is consistent with the selected model.
1031 * Do not connect the wires with power on. After the wiring is completed and checked, power can be turned on.
1032 * Do not arbitrarily change the components or wires that have been welded at the factory when using the product.
1033 * The sensor is a precision device. When using it, please do not disassemble it by yourself or contact the sensor surface with sharp objects or corrosive liquids to avoid damaging the product.
1034 * Do not power on while connect the cables. Double check the wiring before power on
1035
1036 = 5. FAQ =
1037
1038
1039
1040 = 6. Order Info =
1041
1042 == 6.1 Main Process Unit ==
1043
1044
1045 Part Number: (% style="color:blue" %)**WQS-LB-XX**
1046
1047 (% style="color:blue" %)**XX**(%%): The default frequency band
1048
1049 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1050 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1051 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1052 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1053 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1054 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1055 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1056 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1057
1058 == 6.2 Sensors ==
1059
1060
1061 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
1062 |=(% style="width: 300px;background-color:#4F81BD;color:white" %)**Sensor Model**|=(% style="width: 200px;background-color:#4F81BD;color:white" %)**Part Number**
1063 |(% style="width:462px" %)PH Sensor|(% style="width:120px" %)DR-PH01
1064 |(% style="width:462px" %)EC K1 Sensor|(% style="width:120px" %)DR-ECK1.0
1065 |(% style="width:462px" %)EC K10 Sensor|(% style="width:120px" %)DR-ECK10.0
1066 |(% style="width:462px" %)ORP Sensor|(% style="width:120px" %)DR-ORP1
1067 |(% style="width:462px" %)Dissolved Oxygen Sensor|(% style="width:120px" %)DR-DO1
1068 |(% style="width:462px" %)Turbidity Sensor|(% style="width:120px" %)DR-TS1
1069
1070 = 7. Support =
1071
1072
1073 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1074
1075 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].