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USER’S GUIDE
Humidity and Temperature USB Datalogger
ALM
REC
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FEATURES
z Memory for 32,000 readings
(16000 temperature and 16,000 humidity readings)
z Dew point indication
z Status Indication
z USB Interface
z User-Selectable Alarm
z Analysis 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
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ALM
REC
Green LED
Red/Yellow LED
REC
ALM
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LED STATUS GUIDE
LEDs Indication Action
REC ALM
Both LED lights OFF
Logging not active
Or
Low Battery
Start logging
Replace battery and
download the data
REC ALM
One green flash every 10 sec. *
Logging, no alarm condition**
Green double flash every 10 sec. *
Delayed start
To start, hold the start
button until Green and
Yellow LED flash
REC ALM
Red single flash every 10 sec. *
-Logging, low alarm for RH***
Red double flash every 10 sec. *
-Logging, high alarm for RH***
Red single flash every 60 sec.
- Low Battery****
If logging, it will stop
automatically. No data will
be lost. Replace battery
and download data
REC ALM
Yellow single flash every 10 sec. *
-Logging, low alarm for TEMP***
Yellow double flash every 10 sec. *
-Logging, high alarm for TEMP***
Yellow single flash every 60 sec.
- Logger memory full
Download data
* To save power, the logger’s LED flashing-cycle can be changed to 20s or 30s via the supplied software.
** To save power, alarm LEDs 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 cycle and the next alarm will blink for next cycle.
****When the battery is low, all operations will be disabled automatically. NOTE: Logging automatically stops
when the battery weakens (logged data will be retained). The supplied software is required to restart
logging and to download logged data.
*****
To use the delay function. Run the datalogger Graph software, click on the computer icon on
the menu bar (2nd from left) or select LOGGER SET from the LINK pull-down menu. The
Setup window will appear, and you will see there are two options: Manual and Instant. If you
select the Manual option, after you click the Setup button, the logger won't start loggi ng
immediately until you press the yellow button in logger's ho us ing .
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SPECIFICATIONS
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%
Relative Humidity
Accuracy(40 to 60%)
±3.0%
Overall Range
-40 to 70℃（-40 to 158℉）
Accuracy(-40 to -10 and +40 to +70℃) ±2℃
Accuracy(-10 to +40℃) ±1℃
Accuracy (-40 to +14 and 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 of Alarm LEDs
Dimensions/Weight 101x25x23mm (4x1x.9”)/ 172g (6oz)
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BATTERY REPLACEMENT
Only use 3.6V lithium batteries. Before replacing the b attery, 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 in to the battery compartment observing the right polarity. The
two displays briefly l i ght up for control purposes(altern ationg, 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 int o the USB port for longer than necessary will caus e 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, ch emical vapors,
and other environmental conditions w hich 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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