JRC JCY-1900 User Manual (English)

Other manuals for JRC JCY-1900

Questions and Answers:

A
Amy RobertsAug 21, 2025
How to fix JRC JCY-1900 Data Loggers MCB's LED not turning on?
- C
  chad48Aug 21, 2025
  If the LED (SYS. or REC.) on your MCB isn't lighting up, there could be a few reasons. First, make sure the RCU's POWER switch is turned on. If it is, check the AC-line fuse in the PSU after stopping the power supply to the RCU; if it's blown, replace it with a spare. Also, verify that the switchboard is supplying power. If none of these steps work, the PSU might be failing, and you should contact your sales representative, our sales department, nearest branch office or sales office.
T
Teresa CrawfordAug 23, 2025
What to do if JRC JCY-1900 Data Loggers OPU screen is not displayed?
- V
  vthompsonAug 23, 2025
  If the OPU screen is blank, try adjusting the screen brightness using the rotary knob. If that doesn't work, check the OPU's operating time. If it's over 50,000 hours, the LCD might be nearing the end of its life, and it may be necessary to replace the OPU. Contact your sales representative, our sales department, nearest branch office or sales office. Also, ensure the OPU is receiving power by checking the LAN cable and rebooting the RCU.
R
Ronald Rasmussen DVMAug 25, 2025
Why AC input power is not supplied to the RCU JRC Data Loggers?
- M
  Ms. Christina Williams MDAug 25, 2025
  If the AC input power is not supplied to the RCU, check the switchboard and ensure it's providing power. Also, verify that the POWER switch on the RCU is turned on. Lastly, inspect the AC line fuse in the RCU; if it's blown, replace it.
J
Jacqueline HillAug 27, 2025
What to do if JRC JCY-1900 OPU can't operate?
- J
  Jordan JonesAug 27, 2025
  If the OPU isn't responding, it might be in operation mode. Try pushing the HOME button on the OPU. If the rotary knob is broken, it is necessary to replace the OPU. Contact your sales representative, our sales department, nearest branch office or sales office.
J
Jon AdamsAug 27, 2025
Why is the LCD screen dark on my JRC JCY-1900 Data Loggers?
- S
  Sandra RojasAug 28, 2025
  If the LCD screen on your JRC Data Loggers becomes dark, first try adjusting the screen brightness using the rotary knob. If the screen remains dark, check the OPU's operating time. If it's over 50,000 hours, the LCD might be nearing the end of its life, and it may be necessary to replace the OPU. Contact your sales representative, our sales department, nearest branch office or sales office.
J
Jaime BoothAug 29, 2025
How to troubleshoot RCU communication issues with OPU on JRC JCY-1900?
- M
  Maria JacksonAug 29, 2025
  If the RCU can't communicate with the OPU, first check the cable connecting them. If the cable is fine, try rebooting the RCU.
A
Andrew RiveraAug 30, 2025
What to do if voltage of RCU's built-in battery is lower than the rated value in JRC Data Loggers?
- H
  Heather CannonAug 31, 2025
  If the RCU's built-in battery voltage is lower than the rated value, turn on the POWER switch to charge the battery.
T
Tim TateSep 1, 2025
What to do if RCU's built-in fan is stopping in JRC JCY-1900?
- J
  Justin AndersonSep 1, 2025
  It is necessary to replace the fan. Please contact our head office, or a nearby branch or local office to request servicing.
E
Eric WilsonSep 2, 2025
What to do if RCU's built-in battery is deteriorating in JRC JCY-1900?
- S
  Scott TorresSep 2, 2025
  It is necessary to replace the battery. Please contact our head office, or a nearby branch or local office to request servicing.
T
Taylor SchroederSep 4, 2025
What to do if temperature of RCU's built-in battery is higher than the rated value in JRC JCY-1900?
- A
  Ashley DaltonSep 4, 2025
  First, check the temperature of the place where the RCU is installed. Then, reboot the RCU to see if it works normally. If the problem persists, please contact our head office, or a nearby branch or local office to request servicing.

JRC JCY-1900 Specifications

General

Measurement Parameters	Temperature, Humidity
Humidity Range	0% to 100% RH
Communication Interface	USB
Category	Data Logger
Resolution	Temperature: 0.1°C; Humidity: 0.1% RH
Sampling Interval	1 second to 24 hours (configurable)
Operating Environment	0% to 100% RH
Battery Life	1 year (typical)