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BATTERY REPLACEMENT 

Only use 3.6V lithium batteries. Before replacing the battery, remove the model from the PC. 
Follow diagrammatic and explaination steps 1 throught 4 below: 
 
1.

 

With a pointed object(d.g. a samll screwdriver or similar), open the casing. Lever the casing 
off in the direction of the arrow. 

 
2.

 

Pull the data logger from the casing. 

 
3.

 

Replace/Insert the battery into the battery compartment observing the right polarity. The 
two displays briefly light up for control purposes(alternationg, green, yellow, green). 

 
4.

 

Slide the data logger back into the casing until it snaps into place. Now the data logger is 
ready for programing. 

 
NOTE: 
Leaving the model plugged into the USB port for longer than necessary will cause some of the 
battery capacity to be lost. 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

WARNING: Handle lithium batteries carefully, observe warnings on battery casing. 

Dispose of in accordance with local regulations. 

 

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: 
 
Bake the Logger at 80°C (176°F) at<5%RH for 36 hours followed by 
20-30°C (70-90°F) at>74%RH for 48 hour ( for re-hydration) 
 
If permanent damage to the internal sensor is suspected, replace the Logger immediately to 
insure accurate readings. 
 

 

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Summary of Contents for PTHDL150

Page 1: ...USER S GUIDE Humidity and Temperature USB Datalogger ALM REC ...

Page 2: ...sis software z Multi mode to start logging z Long battery life z Selectable measuring cycle 2s 5s 10s 30s 1m 5m 10m 30m 1hr 2hr 3hr 6hr 12hr 24hr DISCRIPTION 1 Protective cover 2 USB connector to PC port 3 Start button 4 RH and Temperature sensors 5 Alarm LED red yellow 6 Record LED green 7 Mounting clip LED STATUS GUIDE 1 2 3 4 7 6 5 ALM REC Green LED Red Yellow LED REC ALM ...

Page 3: ...EDs for temperature and humidity can be disabled via the supplied software When both temperature and relative humidity readings exceed alarm level synchronously LED status indication alternate every cycle For example If there is only one alarm the REC LED blinks for one cycle and alarm LED will blink for next cycle If there are two alarms REC LED will not blink First alarm will blink for first cyc...

Page 4: ...104 to 158 3 6 Temperature Accuracy 14 to 104 1 8 Overall Range 40 to 70 40 to 158 Dew point Temperature Accuracy 25 40 to 100 RH 2 0 4 0 Logging rate Selectable sampling interval From 2 seconds up to 24 hours Operating temperature 35 to 80 31to 176 Battery type 3 6V lithium 1 2AA SAFT LS14250 Tadiran TL 5101 or equivalent Battery life 1 year typ depending on logging rate ambient temperature use o...

Page 5: ... the data logger is ready for programing NOTE Leaving the model plugged into the USB port for longer than necessary will cause some of the battery capacity to be lost WARNING Handle lithium batteries carefully observe warnings on battery casing Dispose of in accordance with local regulations Sensor Reconditioning Over time the internal sensor may be compromised as a result of pollutants chemical v...

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