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7. Each time P P P P en

en H H H H ome

recently adjusted position) until On/Off

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 C 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 CALIBRATION

ATION

USER CALIBR

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

Adjust- - - - Down

Adjust

Down

Down button until the LED is solid green. The LED will then blink amber at which

Down

point only the pen being adjusted will show on the display.

Note:

Note: Make sure to press the Adjust-Down button first so the unit will not turn off

Note:

2. To raise the unit of measurement, press the Adjust

measurement, press the Adjust

blue pens on a two pen unit and stores the current adjustment value.

3. When Calibration is complete, press the On/Off

even after you turn the unit off or if AC power fails.

Note: After two hours, if no buttons are pressed, the unit will time out of Calibration mode

Note:

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 button. You have now restored factory calibration settings.

On/Off

Note: It is recommended that you use a controlled chamber when determining if Calibration

Note:

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 TO 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.

Dickson TH8P Manual V14 052418

ome is pressed the two pens will switch positions (moving the most

ome

On/Off

On/Off is pressed to exit pen adjust mode.

On/Off

Adjust- - - - Down

Adjust

Adjust- - - - Up

Up button. Pressing Pen home

Adjust

On/Off button. The adjustment is stored in memory

On/Off

Down button. To lower the unit of

Down

Pen home switches between the red and

Pen home

On/Off

On/Off and the

On/Off