Dickson TH8P Manual V14 052418
6
7.
Each time P
P
P
Pen
en
en
en H
H
H
Home
ome
ome
ome is pressed the two pens will switch positions (moving the most
recently adjusted position) until On/Off
On/Off
On/Off
On/Off is pressed to exit pen adjust mode.
Note: Pressing the On/Off button will exit the adjustment and return the unit to normal
operation. Each time the Pen Home or On/Off button is pressed, the adjustment currently in
progress will be stored. The unit will take one minute to exit Pen Adjust Mode once the On/Off
button is pressed.
C
C
C
CALIBRATION
ALIBRATION
ALIBRATION
ALIBRATION
The R200/R250 Replaceable Sensor was carefully tested and calibrated before being shipped
from the factory. For greatest accuracy, we recommend replacing the sensor every 6-12 months
(does not include N400 and N450).
To order a Calibrated Replacement Sensor Call customer service at (630) 543-3747 or go to
www.dicksondata.com.
When your new Replaceable Sensor arrives, simply turn off the recorder, remove and discard the
old sensor, plug in the new one and power the recorder back on. Your recorder will continue to
record temperature and humidity without interruption.
USER CALIBR
USER CALIBR
USER CALIBR
USER CALIBRATION
ATION
ATION
ATION
If you have an accurate standard to compare against, the Replaceable Sensor calibration can be
adjusted at one point. This will not adjust the span and is not as accurate as replacing the
Replaceable Sensor with a newly calibrated one.
1.
To activate Calibration mode, turn the unit on and press and hold both the On/Off
On/Off
On/Off
On/Off and the
Adjust
Adjust
Adjust
Adjust----Down
Down
Down
Down button until the LED is solid green. The LED will then blink amber at which
point only the pen being adjusted will show on the display.
Note:
Note:
Note:
Note:
Make sure to press the Adjust-Down button first so the unit will not turn off
2.
To raise the unit of measurement, press the Adjust
Adjust
Adjust
Adjust----Down
Down
Down
Down button. To lower the unit of
measurement, press the Adjust
Adjust
Adjust
Adjust----Up
Up
Up
Up button. Pressing Pen home
Pen home
Pen home
Pen home switches between the red and
blue pens on a two pen unit and stores the current adjustment value.
3.
When Calibration is complete, press the On/Off
On/Off
On/Off
On/Off button. The adjustment is stored in memory
even after you turn the unit off or if AC power fails.
Note:
Note:
Note:
Note: After two hours, if no buttons are pressed, the unit will time out of Calibration mode
and resume normal operation. If you wish to cancel the Calibration, simply enter Calibration
mode and toggle through the steps without adjusting displayed readings. Exit by pressing
the On/Off
On/Off
On/Off
On/Off button. You have now restored factory calibration settings.
Note:
Note:
Note:
Note: It is recommended that you use a controlled chamber when determining if Calibration
is necessary. Adjusting the pen locations in an open room is not recommended as humidity
can vary greatly within a very small area.
NEED T
NEED T
NEED T
NEED TO KNOW
O KNOW
O KNOW
O KNOW
The pen movement for the TH8P0 is slower than on the AC powered models in order to conserve
battery power. In 24-hour mode the pen will move every 1 minute and 30 seconds. In 7-day
mode the pen will move every 8 minutes and 30 seconds.
