THL2 The THL2 is compatible with computers using Windows™ 2000, XP, Vista, Windows™ 7 and Windows™ 8. 2 1-800-547-5740 • Fax: (503) 643-6322 www.ueitest.com • email: info@ueitest.
Introduction Use the UEi THL2 to log temperature and humidity values for later analysis. Verify cold storage requirements are being met, or test temperatures and humidity for comfort analysis.
Controls and Indicators 1 3 4 2 6 2 NOTE: You MUST Install the software provided and initialize the THL2 Prior to use. 5 Front 1. 2. 3. 4. 5. 6. Back USB: Connects to a USB port on a computer. Start Button: Activates data logger. Alarm LED: Illuminates red or yellow. Record LED: Illuminates green. RH and Temperature Sensors Slot to Open Battery: Refer to battery replacement.
Operating Instructions: Before using you must install the software on your computer and initialize the THL2.
Description Action Start logging Replace battery and download data Not logging Low battery Logging - No alarm** Not logging - in Manual Start Mode Press “START” to begin logging Logging - Low Alarm RH%*** Logging - High Alarm RH%*** Low battery**** Logging will stop automatically.
*To save power, the logger’s LED flashing-cycle can be changed to 20 or 30 seconds via the supplied software. **To save power alarm LED’s for temperature and humidity can be disabled via the supplied software. ***When both temperature and relative humidity readings exceed the alarm levels the LED status indication alternate every cycle. For example if there is only one alarm cycle the “REC” LED will blink for one cycle, and the Alarm LED status will blink on the next cycle.
Software Installation The THL2 comes with software that must be installed before the device can be used. Insert software CD into computer and follow the install instructions. After installation, place unit in the PC USB port to begin download data. Mounting to Wall Screw in wall mount to wall and place the THL2 data logger inside the holder as shown. 2 2 Or, use the magnetic mount on metal surfaces and place the THL2 data logger inside the holder as shown.
Maintenance Periodic service WARNING! Repair and service of this instrument is to be performed by qualified personnel only. Improper repair or service could result in physical degradation of the meter. This could alter the protection from electrical shock and personal injury this meter provides to the operator. Perform only those maintenance tasks that you are qualified to do. Cleaning Periodically clean your meter’s case using a damp cloth.
Battery Replacement Only use 3.6V lithium battery. 1. With a small screw driver, open the case. Lever the casing off in the direction of the arrow. 2. Pull the data logger from the casing. 3. Replace/insert the new battery into the battery compartment observing the right polarity. The two displays briefly light up for control purposes (alternating green, yellow, green). 4. Slide the data logger back into the casing until it snaps into place.
Specifications Relative Humidity Overall range 0 to 100% Accuracy (0 to 20 and 80 to 100%) ±5.0% Accuracy (20 to 40 and 60 to 80%) ±3.5% Accuracy (40 to 60%) 3.0% Temperature Overall range -40˚ to 158˚F (-40˚ to 70˚C) Accuracy (-40˚ to +14 and 104˚ to 158˚F) ±3.6˚F Accuracy (+14˚ to +104˚F) ±1.8˚F Accuracy (-40˚ to -10˚ and +40˚ to +70˚C) ±2˚C Accuracy (-10˚ to +40˚C) ±1˚C Dew Point Overall range -40˚ to 158˚F Temperature (-40˚ to 70˚C) Accuracy (25˚C, 40 to 100% RH) ±4.0˚F (2.
Sensor Reconditioning Over time, the internal sensor may be compromised as a result of pollutants, chemical vapors, and other environmental conditions which can lead to inaccurate readings. To recondition the internal sensor, please follow the procedure below: Dry the logger at 176˚F (80˚C) at <5% RH for 36 hours followed by 70˚ - 90˚F (20˚ - 30˚C) at >74% RH for 48 hours (for re-hydration). If permanent damage to the internal sensor is suspected, replace the Logger immediately to ensure accurate readings.
THL2 Temperature/Humidity USB Data logger Limited Warranty The THL2 is warranted to be free from defects in materials and workmanship for a period of one year from the date of purchase. If within the warranty period your instrument should become inoperative from such defects, the unit will be repaired or replaced at UEi’s option.
