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Humidity and Temperature USB Datalogger LOG32

l Memory for 32,000 readings
(16000 temperature and 16,000 humidity readings)
l Dew point indication
l Status Indication
l USB Interface
l User-Selectable Alarm
l Analysis software
l Multi-mode to start logging
l Long battery life
l Selectable measuring cycle:
2s, 5s, 10s, 30s, 1m, 5m, 10m, 30m, 1hr, 2hr, 3hr, 6hr, 12hr, 24hr

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


Both LED lights OFF
Start logging
Logging not active
Low Battery
download the data
One green flash every 10 sec. *
Logging, no alarm condition**
To start, hold the start
Green double flash every 10 sec. *
button until Green and
Delayed start
Yellow LED flash
Red single flash every 10 sec. *
-Logging, low alarm for RH***
Red double flash every 10 sec. *
-Logging, high alarm for RH***
If logging, it will stop
automatically. No data will
Red single flash every 60 sec.
be lost. Replace battery
- Low Battery****
and download data
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.
Download data
- Logger memory full
* 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 logging immediately until you press the yellow button in logger's housing.

Selectable sampling interval: From 2 seconds up to 24 hours 3.6V lithium(1/2AA)(SAFT LS14250, Tadiran TL-5101 or equivalent) 1 year (typ.) depending on logging rate, ambient temperature & use of Alarm LEDs 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


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.


Appendix 1 Indigenous flora of the Rondebosch Common Compiled by Fiona Watson supplemented and revised by Clive McDowell Kirsten Louw, Fiona Watson and Friends of Rondebosch Common. Index to ‘A Year on Rondebosch Common’ xx Key: name change* name incorrect ** ‘Strange plant’ see Centella macrocarpa Aizoon sarmentosum (spekvygie) Aizoaceae 123, 131 ,145 Albuca canadensis *see

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