Changes for page LSN50v2-D20-D22-D23 LoRaWAN Temperature Sensor User Manual
Last modified by Xiaoling on 2024/01/17 16:19
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... ... @@ -429,10 +429,8 @@ 429 429 === 2.6.1 Before measurement === 430 430 431 431 ((( 432 -((( 433 433 If the LSPH01 has more than 7 days not use or just clean the pH probe. User should put the probe inside pure water for more than 24 hours for activation. If no put in water, user need to put inside soil for more than 24 hours to ensure the measurement accuracy. 434 434 ))) 435 -))) 436 436 437 437 438 438 ... ... @@ -439,45 +439,24 @@ 439 439 === 2.6.2 Measurement === 440 440 441 441 442 -((( 443 443 (% style="color:#4f81bd" %)**Measurement the soil surface:** 444 -))) 445 445 446 -((( 447 447 [[image:1654592946732-634.png]] 448 -))) 449 449 450 -((( 451 451 Choose the proper measuring position. Split the surface soil according to the measured deep. 452 -))) 453 453 454 -((( 455 455 Put pure water, or rainwater to make the soil of measurement point to moist mud. Remove rocks or hard things. 456 -))) 457 457 458 -((( 459 459 Slowly insert the probe to the measure point. Don’t use large force which will break the probe. Make sure not shake when inserting. 460 -))) 461 461 462 -((( 463 463 Put soil over the probe after insert. And start to measure. 464 -))) 465 465 466 -((( 467 - 468 -))) 469 469 470 -((( 471 471 (% style="color:#4f81bd" %)**Measurement inside soil:** 472 -))) 473 473 474 -((( 475 475 Dig a hole with diameter > 20CM. 476 -))) 477 477 478 -((( 479 479 Insert the probe inside, method like measure the surface. 480 -))) 481 481 482 482 483 483 ... ... @@ -507,13 +507,9 @@ 507 507 508 508 == 2.7 Calibration == 509 509 510 -((( 511 511 User can do calibration for the probe. It is limited to use below pH buffer solution to calibrate: 4.00, 6.86, 9.18. When calibration, user need to clean the electrode and put the probe in the pH buffer solution to wait the value stable ( a new clean electrode might need max 24 hours to be stable). 512 -))) 513 513 514 -((( 515 515 After stable, user can use below command to calibrate. 516 -))) 517 517 518 518 [[image:image-20220607171149-4.png]] 519 519