Introduction, Operating instructions – UEi Test Instruments THL1 User Manual
Page 2
C o n t rols and Indicators
1. USB: Connects to a USB port on a computer.
2. Start Button: Activates datalogger.
3. Alarm LED: Illuminates red or yellow.
4. Record LED: Illuminates green.
5. RH and Temperature Sensors
6. Slot to Open Battery:
Refer to battery replacement.
Introduction
Use the UEi THL1 to log temperature and humidity values for later
analysis. Verify cold storage requirements are being met, or test temper-
atures and humidity for comfort analysis.
Features include
• 32,000 data points (16,000 Temperature, 16,000 Relative Humidity)
• Analysis software with dew point calculation, charting of results,
and export to other file formats
• USB interface and Windows™ compatible
• Instant or manual start
• Alarm LED’s with user selectable values
• Magnetic mount
• Long battery life
Operating Instructions
LEDs
Indication
Description
Action
Both LED lights off
Not logging
Start logging
Low battery
Replace battery and download data
One Green flash every 10 seconds*
Logging - No alarm**
Double Green flash every 10 seconds*
Not logging - in Manual Start Mode
Press “START” to begin logging
Single Red flash every 10 seconds*
Logging - Low Alarm RH%***
Double Red flash every 10 seconds*
Logging - High Alarm RH%***
Single Red flash every 60 seconds
Low battery****
Logging will stop automatically.
Replace battery and download data
(No Data will be lost)
Single Yellow flash every 10 seconds*
Logging - Low Temp Alarm***
Double Yellow flash every 10 seconds*
Logging - High Temp Alarm***
Single Yellow flash every 60 seconds
Logger memory full
Download Data
THL1-MAN
P. 1
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Front
Back
REC
ALM
REC
ALM
REC
ALM
REC
ALM