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Last modified by Xiaoling on 2025/07/10 16:21
From version 130.2
edited by Xiaoling
on 2025/04/27 09:44
Change comment: There is no comment for this version
To version 146.2
edited by Mengting Qiu
on 2025/07/08 10:57
Change comment: There is no comment for this version

Summary

Details

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Author
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1 -XWiki.Xiaoling
1 +XWiki.ting
Content
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1 1  
2 2  
3 3  
4 -(% style="text-align:center" %)
5 -[[image:image-20240109154731-4.png||height="546" width="769"]]
4 +[[image:image-20240109154731-4.png||data-xwiki-image-style-alignment="center" height="546" width="769"]]
6 6  
7 7  
8 8  
... ... @@ -142,7 +142,11 @@
142 142  * Long-Term Stability: ±0.2% F.S / Year
143 143  * Storage temperature: -30°C~~80°C
144 144  * Operating temperature: 0°C~~50°C
145 -* Material: 316 stainless steels
144 +* Probe Material: 316 stainless steels
145 +* Cable model specifications： CGYPU 5*0.2mm2
146 +* Usage characteristics of Cable
147 +1） Operating temperature：-40℃— +70℃
148 +2） -30℃ bending cable 15 times of outer diameter can work normally
146 146  
147 147  === 1.4.3 Wireless Differential Air Pressure Sensor ===
148 148  
... ... @@ -242,20 +242,16 @@
242 242  
243 243  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
244 244  |=(% style="width: 167px;background-color:#4F81BD;color:white" %)Behavior on ACT|=(% style="width: 117px;background-color:#4F81BD;color:white" %)Function|=(% style="width: 226px;background-color:#4F81BD;color:white" %)Action
245 -|(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT between 1s < time < 3s|(% style="background-color:#f2f2f2; width:117px" %)Send an uplink|(% style="background-color:#f2f2f2; width:225px" %)(((
246 -
247 -
248 +|[[image:1749540420016-961.png]] 1~~3s|(% style="background-color:#f2f2f2; width:117px" %)Send an uplink|(% style="background-color:#f2f2f2; width:225px" %)(((
248 248  If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, blue led will blink once.
249 249  Meanwhile, BLE module will be active and user can connect via BLE to configure device.
250 250  )))
251 -|(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT for more than 3s|(% style="background-color:#f2f2f2; width:117px" %)Active Device|(% style="background-color:#f2f2f2; width:225px" %)(((
252 -
253 -
252 +|[[image:1749540423574-437.png]] >3s|(% style="background-color:#f2f2f2; width:117px" %)Active Device|(% style="background-color:#f2f2f2; width:225px" %)(((
254 254  Green led will fast blink 5 times, device will enter OTA mode for 3 seconds. And then start to JOIN LoRaWAN network.
255 255  Green led will solidly turn on for 5 seconds after joined in network.
256 256  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.
257 257  )))
258 -|(% style="background-color:#f2f2f2; width:167px" %)Fast press ACT 5 times.|(% style="background-color:#f2f2f2; width:117px" %)Deactivate Device|(% style="background-color:#f2f2f2; width:225px" %)Red led will solid on for 5 seconds. Means PS-LB is in Deep Sleep Mode.
257 +|[[image:1749540397649-875.png]] x5|(% style="background-color:#f2f2f2; width:117px" %)Deactivate Device|(% style="background-color:#f2f2f2; width:225px" %)Red led will solid on for 5 seconds. Means PS-LB is in Deep Sleep Mode.
259 259  
260 260  == 1.8 Pin Mapping ==
261 261  
... ... @@ -311,7 +311,7 @@
311 311  The LPS8V2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
312 312  
313 313  
314 -**Step 1: Create a device in TTN with the OTAA keys from PS-LB/LS.**
313 +(% style="color:blue" %)**Step 1: Create a device in TTN with the OTAA keys from PS-LB/LS.**
315 315  
316 316  Each PS-LB/LS is shipped with a sticker with the default device EUI as below:
317 317  
... ... @@ -344,7 +344,7 @@
344 344  [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907112427-7.png?rev=1.1||alt="image-20240907112427-7.png"]]
345 345  
346 346  
347 -**Step 2: Add decoder.**
346 +(% style="color:blue" %)**Step 2: Add decoder.**
348 348  
349 349  In TTN, user can add a custom payload so it shows friendly reading.
350 350  
... ... @@ -357,7 +357,7 @@
357 357  [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS25-LBLDS25-LS--LoRaWAN_LiDAR_Distance_Auto-Clean_Sensor_User_Manual/WebHome/image-20241009140603-2.png?width=1168&height=562&rev=1.1||alt="image-20241009140603-2.png" height="562" width="1168"]]
358 358  
359 359  
360 -**Step 3: Activate on PS-LB/LS**
359 +(% style="color:blue" %)**Step 3: Activate on PS-LB/LS**
361 361  
362 362  Press the button for 5 seconds to activate the PS-LB/LS.
363 363  
... ... @@ -376,7 +376,7 @@
376 376  Users can also use the downlink command(0x26 01) to ask PS-LB/LS to resend this uplink.
377 377  
378 378  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
379 -|(% colspan="6" style="background-color:#4f81bd; color:white" %)Device Status (FPORT=5)
378 +|(% colspan="6" style="background-color:#4f81bd; color:white" %)**Device Status (FPORT=5)**
380 380  |(% style="background-color:#f2f2f2; width:103px" %)Size (bytes)|(% style="background-color:#f2f2f2; width:72px" %)1|(% style="background-color:#f2f2f2" %)2|(% style="background-color:#f2f2f2; width:91px" %)1|(% style="background-color:#f2f2f2; width:86px" %)1|(% style="background-color:#f2f2f2; width:44px" %)2
381 381  |(% style="background-color:#f2f2f2; width:103px" %)Value|(% style="background-color:#f2f2f2; width:72px" %)Sensor Model|(% style="background-color:#f2f2f2" %)Firmware Version|(% style="background-color:#f2f2f2; width:91px" %)Frequency Band|(% style="background-color:#f2f2f2; width:86px" %)Sub-band|(% style="background-color:#f2f2f2; width:44px" %)BAT
382 382  
... ... @@ -446,10 +446,8 @@
446 446  
447 447  (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
448 448  |(% style="background-color:#4f81bd; color:white; width:97px" %)(((
449 -
450 -
451 -Size(bytes)
452 -)))|(% style="background-color:#4f81bd; color:white; width:50px" %)2|(% style="background-color:#4f81bd; color:white; width:71px" %)2|(% style="background-color:#4f81bd; color:white; width:98px" %)2|(% style="background-color:#4f81bd; color:white; width:73px" %)2|(% style="background-color:#4f81bd; color:white; width:122px" %)1
448 +**Size(bytes)**
449 +)))|(% style="background-color:#4f81bd; color:white; width:50px" %)**2**|(% style="background-color:#4f81bd; color:white; width:71px" %)**2**|(% style="background-color:#4f81bd; color:white; width:98px" %)**2**|(% style="background-color:#4f81bd; color:white; width:73px" %)**2**|(% style="background-color:#4f81bd; color:white; width:122px" %)**1**
453 453  |(% style="width:97px" %)Value|(% style="width:48px" %)[[BAT>>||anchor="H2.3.3BatteryInfo"]]|(% style="width:71px" %)[[Probe Model>>||anchor="H2.3.4ProbeModel"]]|(% style="width:98px" %)[[0 ~~~~ 20mA value>>||anchor="H2.3.507E20mAvalue28IDC_IN29"]]|(% style="width:73px" %)[[0 ~~~~ 30v value>>||anchor="H2.3.607E30Vvalue28pinVDC_IN29"]]|(% style="width:122px" %)[[IN1 &IN2 Interrupt  flag>>||anchor="H2.3.7IN126IN226INTpin"]]
454 454  
455 455  [[image:1675144608950-310.png]]
... ... @@ -470,11 +470,10 @@
470 470  
471 471  PS-LB/LS has different kind of probe, 4~~20mA represent the full scale of the measuring range. So a 12mA output means different meaning for different probe. 
472 472  
473 -
474 474  For example.
475 475  
476 476  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
477 -|(% style="background-color:#4f81bd; color:white" %)Part Number|(% style="background-color:#4f81bd; color:white" %)Probe Used|(% style="background-color:#4f81bd; color:white" %)4~~20mA scale|(% style="background-color:#4f81bd; color:white" %)Example: 12mA meaning
473 +|(% style="background-color:#4f81bd; color:white" %)**Part Number**|(% style="background-color:#4f81bd; color:white" %)**Probe Used**|(% style="background-color:#4f81bd; color:white" %)**4~~20mA scale**|(% style="background-color:#4f81bd; color:white" %)**Example: 12mA meaning**
478 478  |(% style="background-color:#f2f2f2" %)PS-LB/LS-I3|(% style="background-color:#f2f2f2" %)immersion type with 3 meters cable|(% style="background-color:#f2f2f2" %)0~~3 meters|(% style="background-color:#f2f2f2" %)1.5 meters pure water
479 479  |(% style="background-color:#f2f2f2" %)PS-LB/LS-I5|(% style="background-color:#f2f2f2" %)immersion type with 5 meters cable|(% style="background-color:#f2f2f2" %)0~~5 meters|(% style="background-color:#f2f2f2" %)2.5 meters pure water
480 480  |(% style="background-color:#f2f2f2" %)PS-LB/LS-T20-B|(% style="background-color:#f2f2f2" %)T20 threaded probe|(% style="background-color:#f2f2f2" %)0~~1MPa|(% style="background-color:#f2f2f2" %)0.5MPa air / gas or water pressure
... ... @@ -482,6 +482,23 @@
482 482  The probe model field provides the convenient for server to identical how it should parse the 4~~20mA sensor value and get the correct value.
483 483  
484 484  
481 +When connecting to current sensors sold by our company, you can convert current readings to corresponding values by simply configuring the [[AT+PROBE>>||anchor="H3.3.4SettheProbeModel"]] command. If you prefer not to configure this command on the sensor, you can uniformly handle the conversion in the payload decoder instead.
482 +
483 +**Examples for decoder implementation:**
484 +
485 +~1. For AT+PROBE=0005, add the following processing in your decoder:
486 +
487 +[[image:image-20250512144042-1.png]]
488 +
489 +[[image:image-20250512144122-2.png]]
490 +
491 +2. For AT+PROBE=0102, add the following processing in your decoder(Corresponding to the position shown in the above screenshot).
492 +
493 +bytes[i]=0x01;bytes[1+i]=0x02;
494 +
495 +bytes[2]=0x01;bytes[3]=0x02;
496 +
497 +
485 485  === 2.3.5 0~~20mA value (IDC_IN) ===
486 486  
487 487  
... ... @@ -535,10 +535,8 @@
535 535  
536 536  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
537 537  |(% style="background-color:#4f81bd; color:white; width:65px" %)(((
538 -
539 -
540 -Size(bytes)
541 -)))|(% style="background-color:#4f81bd; color:white; width:35px" %)2|(% style="background-color:#4f81bd; color:white; width:400px" %)n
551 +**Size(bytes)**
552 +)))|(% style="background-color:#4f81bd; color:white; width:35px" %)**2**|(% style="background-color:#4f81bd; color:white; width:400px" %)**n**
542 542  |(% style="width:94px" %)Value|(% style="width:43px" %)[[BAT>>||anchor="H2.3.3BatteryInfo"]]|(% style="width:367px" %)(((
543 543  
544 544  
... ... @@ -613,43 +613,52 @@
613 613  == 2.6 Datalog Feature (Since V1.1) ==
614 614  
615 615  
616 -When a user wants to retrieve sensor value, he can send a poll command from the IoT platform to ask the sensor to send value in the required time slot.
627 +Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, S31x-LB/LS will store the reading for future retrieving purposes.
617 617  
618 618  
619 -=== 2.6.1 Unix TimeStamp ===
630 +=== 2.5.1 How datalog works ===
620 620  
621 621  
622 -PS-LB uses Unix TimeStamp format based on
633 +PS-LB/LS will wait for ACK for every uplink, when there is no LoRaWAN network,PS-LB/LS will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
623 623  
624 -[[image:image-20250401163826-3.jpeg]]
635 +* (((
636 +a) PS-LB/LS will do an ACK check for data records sending to make sure every data arrive server.
637 +)))
638 +* (((
639 +b) PS-LB/LS will send data in **CONFIRMED Mode**, but PS-LB/LS won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if PS-LB/LS gets a ACK, PS-LB/LS will consider there is a network connection and resend all NONE-ACK messages.
625 625  
626 -Users can get this time from the link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
641 +
642 +)))
627 627  
628 -Below is the converter example:
644 +=== 2.5.2 Enable Datalog ===
629 629  
630 -[[image:image-20250401163906-4.jpeg]]
631 631  
647 +User need to make sure below two settings are enable to use datalog;
632 632  
633 -=== 2.6.2 Set Device Time ===
649 +* (% style="color:blue" %)**SYNCMOD=1(Default)**(%%) to enable sync time via LoRaWAN MAC command, click here ([[AT+SYNCMOD>>https://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H4.6Settimesynchronizationmethod28ThenetworkservermustsupportLoRaWANv1.0.329]]) for detailed instructions.
650 +* (% style="color:blue" %)**PNACKMD=1**(%%)** **to enable datalog feature, click here ([[AT+PNACKMD>>https://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.26RequesttheservertosendanACK]]) for detailed instructions.
634 634  
635 635  
636 -There are two ways to set the device's time:
637 637  
654 +Once PS-LB/LS Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to S31x-LB/LS. If S31x-LB/LS fails to get the time from the server, S31x-LB/LS will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
638 638  
639 -~1. Through LoRaWAN MAC Command (Default settings)
656 +(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
640 640  
641 -Users need to set SYNCMOD=1 to enable sync time via the MAC command.
642 642  
643 -Once CPL01 Joined the LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to CPL01. If CPL01 fails to get the time from the server, CPL01 will use the internal time and wait for the next time request ~[[[via Device Status (FPORT=5)>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/CPL01%20LoRaWAN%20Outdoor%20PulseContact%20%20Sensor%20Manual/#H2.3.1DeviceStatus2CFPORT3D5]]].
659 +=== 2.6.1 Unix TimeStamp ===
644 644  
645 -Note: LoRaWAN Server needs to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature.
646 646  
662 +PS-LB uses Unix TimeStamp format based on
647 647  
648 - 2. Manually Set Time
664 +[[image:image-20250401163826-3.jpeg]]
649 649  
650 -Users need to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
666 +Users can get this time from the link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
651 651  
668 +Below is the converter example:
652 652  
670 +[[image:image-20250401163906-4.jpeg]]
671 +
672 +
653 653  === 2.6.3 Poll sensor value ===
654 654  
655 655  Users can poll sensor values based on timestamps. Below is the downlink command.
... ... @@ -1219,7 +1219,7 @@
1219 1219  
1220 1220  AT Command: AT +STDC
1221 1221  
1222 -AT+STDC=aa,bb,bb
1242 +AT+STDC=aa,bb,cc
1223 1223  
1224 1224  aa:
1225 1225  0: means disable this function and use TDC to send packets.
... ... @@ -1253,6 +1253,113 @@
1253 1253  
1254 1254  * Example 1: Downlink Payload: AE 01 02 58 12 ~-~-->  AT+STDC=1,600,18
1255 1255  
1276 +== 3.4 Print data entries base on page(Since v1.1.0) ==
1277 +
1278 +
1279 +Feature: Print the sector data from start page to stop page (max is 416 pages).
1280 +
1281 +(% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1282 +
1283 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1284 +|(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1285 +|(% style="width:156px" %)(((
1286 + AT+PDTA=1,1
1287 +Print page 1 to 1
1288 +)))|(% style="width:311px" %)(((
1289 +Stop Tx events when read sensor data
1290 +
1291 +8031000 1970/1/1 00:00:00 0 in1:low in2:low exti:low status:false vdc:0.000 idc:0.000 proble:0000 water_deep:0.000
1292 +
1293 +8031010 1970/1/1 00:00:00 0 in1:low in2:low exti:low status:false vdc:0.000 idc:0.000 proble:0000 water_deep:0.000
1294 +
1295 +8031020 1970/1/1 00:00:00 0 in1:low in2:low exti:low status:false vdc:0.000 idc:0.000 proble:0000 water_deep:0.000
1296 +
1297 +8031030 1970/1/1 00:00:00 0 in1:low in2:low exti:low status:false vdc:0.000 idc:0.000 proble:0000 water_deep:0.000
1298 +
1299 +8031040 1970/1/1 00:00:00 0 in1:low in2:low exti:low status:false vdc:0.000 idc:0.000 proble:0000 water_deep:0.000
1300 +
1301 +8031050 1970/1/1 00:00:00 0 in1:low in2:low exti:low status:false vdc:0.000 idc:0.000 proble:0000 water_deep:0.000
1302 +
1303 +8031060 1970/1/1 00:00:00 0 in1:low in2:low exti:low status:false vdc:0.000 idc:0.000 proble:0000 water_deep:0.000
1304 +
1305 +8031070 1970/1/1 00:00:00 0 in1:low in2:low exti:low status:false vdc:0.000 idc:0.000 proble:0000 water_deep:0.000
1306 +
1307 +Start Tx events
1308 +
1309 +
1310 +OK
1311 +)))
1312 +
1313 +(% style="color:#4f81bd" %)**Downlink Command:**
1314 +
1315 +No downlink commands for feature
1316 +
1317 +
1318 +== 3.5 Print last few data entries(Since v1.1.0) ==
1319 +
1320 +
1321 +Feature: Print the last few data entries
1322 +
1323 +
1324 +(% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1325 +
1326 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1327 +|(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1328 +|(% style="width:156px" %)(((
1329 +AT+PLDTA=10
1330 +Print last 10 entries
1331 +)))|(% style="width:311px" %)(((
1332 +Stop Tx events when read sensor data
1333 +
1334 +0001 2025/5/19 06:16:50 3246 in1:low in2:low exti:low status:false vdc:3.352 idc:0.000 proble:0000 water_deep:0.000
1335 +
1336 +0002 2025/5/19 06:17:50 3246 in1:low in2:low exti:low status:false vdc:3.352 idc:0.000 proble:0000 water_deep:0.000
1337 +
1338 +0003 2025/5/19 06:18:50 3246 in1:low in2:low exti:low status:false vdc:3.352 idc:0.000 proble:0000 water_deep:0.000
1339 +
1340 +0004 2025/5/19 06:19:50 3246 in1:low in2:low exti:low status:false vdc:3.352 idc:0.000 proble:0000 water_deep:0.000
1341 +
1342 +0005 2025/5/19 06:20:50 3246 in1:low in2:low exti:low status:false vdc:3.352 idc:0.000 proble:0000 water_deep:0.000
1343 +
1344 +0006 2025/5/19 06:21:50 3246 in1:low in2:low exti:low status:false vdc:3.351 idc:0.000 proble:0000 water_deep:0.000
1345 +
1346 +0007 2025/5/19 06:22:50 3240 in1:low in2:low exti:low status:false vdc:3.351 idc:0.000 proble:0000 water_deep:0.000
1347 +
1348 +0008 2025/5/19 06:26:44 3276 in1:low in2:low exti:low status:false vdc:3.385 idc:0.000 proble:0000 water_deep:0.000
1349 +
1350 +0009 2025/5/19 06:27:36 3246 in1:low in2:low exti:low status:false vdc:3.351 idc:0.000 proble:0000 water_deep:0.000
1351 +
1352 +0010 2025/5/19 06:28:36 3240 in1:low in2:low exti:low status:false vdc:3.351 idc:0.000 proble:0000 water_deep:0.000
1353 +
1354 +Start Tx events
1355 +
1356 +OK
1357 +)))
1358 +
1359 +(% style="color:#4f81bd" %)**Downlink Command:**
1360 +
1361 +No downlink commands for feature
1362 +
1363 +
1364 +== 3.6 Clear Flash Record(Since v1.1.0) ==
1365 +
1366 +
1367 +Feature: Clear flash storage for data log feature.
1368 +
1369 +(% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1370 +
1371 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:503px" %)
1372 +|(% style="background-color:#4f81bd; color:white; width:157px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:137px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:209px" %)**Response**
1373 +|(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1374 +Clear all stored sensor data…
1375 +
1376 +OK
1377 +)))
1378 +
1379 +(% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1380 +
1381 +* Example: 0xA301  ~/~/  Same as AT+CLRDTA
1382 +
1256 1256  = 4. Battery & Power Consumption =
1257 1257  
1258 1258  
... ... @@ -1317,6 +1317,30 @@
1317 1317  [[image:image-20240329175044-1.png]]
1318 1318  
1319 1319  
1447 +== 6.5 Cable & Probe Material Compatibility(Immersion type) ==
1448 +
1449 +
1450 +Since the installation method of immersion sensors requires immersion in a liquid environment, the discussion of liquids that can be safely installed is very important.
1451 +
1452 +(% style="color:blue" %)**The material of the immersed part of the immersion sensor:**
1453 +
1454 +* **Cable Jacket**: Black polyurethane (PU) – Resistant to water, oils, and mild chemicals.
1455 +* **Probe Material**: 316 stainless steel – Corrosion-resistant in most industrial/marine environments.
1456 +
1457 +(% style="color:blue" %)**Chemical Compatibility:**
1458 +
1459 +* **Polyurethane (PU) Cable:** Resists water, oils, fuels, and mild chemicals but may degrade with prolonged exposure to strong acids, bases, or solvents (e.g., acetone, chlorinated hydrocarbons).
1460 +* 3**16 Stainless Steel Probe:** Suitable for water, seawater, mild acids/alkalis, and industrial fluids. Avoid highly concentrated acids (e.g., hydrochloric acid) or chlorides at high temperatures.
1461 +
1462 +**Chemical Resistance Chart for Polyurethane (PU) Cable**
1463 +
1464 +[[image:image-20250603171424-1.png||height="429" width="625"]]
1465 +
1466 +**Chemical Resistance Chart for 316 Stainless Steel Probe**
1467 +
1468 +[[image:image-20250603171503-2.png||height="350" width="616"]]
1469 +
1470 +
1320 1320  = 7. Troubleshooting =
1321 1321  
1322 1322  == 7.1 Water Depth Always shows 0 in payload ==
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