Need Help? Talk to a specialist: 1-800-757-3747

6" Temperature & Humidity Chart Recorder

This product has been replaced by the TH8P5

Multipurpose Temperature & Humidity Chart Recorder with Display, Probe, Alarm and Relays

Download Images: |


Important Information

Charts are sold separately.

Dickson Expert Services

Our Dickson Data Division has specially trained representatives to address the needs of customers with large installations or unique demands. Please call 888-452-4626.

  • Humidity Accuracy +/-2% RH from 0 to 60% RH; +/-3% RH from 60 to 95% RH
  • Unit Weight 9 lbs
$44.00
Probe Dust Filter

Probe Dust Filter - prolong the life of your instrument.

$499.00
Sensaphone Dialer

Remote Monitoring Unit - calls 4 numbers

$99.00
2-Year Warranty

2-Year Warranty

$11.00
9V Battery

9V Battery

$32.00
Universal Plug Kit for AC Adapter

Set of Three International Power Plugs for AC Adapter

$32.00
AC Adapter

AC Adapter

C657 6" (152mm) Chart 7-Day, 0 to 100 $45.00 Add
C658 6" (152mm) Chart 24-Hour, 0 to 100 $45.00 Add
C663 6" (152mm) Chart 7-Day, 0 to 50 C $45.00 Add
C664 6" (152mm) Chart 24-Hour, 0 to 50 C $45.00 Add
C665 6" (152mm) Chart 7-Day, 0 to 200 F/C $45.00 Add
C667 6" (152mm) Chart 24-Hour, 0 to 200 F $45.00 Add
P246 3 Red, 3 Blue Pens $49.00 Add
For more information on this product and other 6" Temperature & Humidity Chart Recorders products see the 6" Temperature & Humidity Chart Recorders page.

Frequently Asked Questions

Pen adjust may be needed if the pen(s) and display do not match.  Before proceeding check your calibration date, the unit may be due for a recalibration, if so contact Dickson.

While the unit is on, press and hold both the Pen Home button and the On/Off button (making sure to press the Pen Home button first so the unit will not turn off). The led will blink rapidly between amber and green for about five seconds, the LED will then turn green, release the Pen Home and On/Off buttons. The led will flash amber and green for one second and the led will turn off.

One pen model: The red pen will move to the outer edge of the chart and is ready to be adjusted. Use the Adjust-Up and Adjust-Down buttons to move the pen to the maximum temperature line on the chart. Once the pen is set, the Pen Home button will move the pen to reaffirm the new pen position. Press the On/Off button to exit pen home adjust.

Two pen models: Both pens will move to the outer edge of the chart, and then the shorter red pen will move to the current position. Use the Adjust-Up and Adjust-Down buttons to move the pen to the maximum temperature line on the chart. Once the shorter red pen is set, the Pen Home button will move the shorter red pen to the outer edge of the chart and the longer blue pen will move to its current position. The Adjust-Up and Adjust-Down buttons will adjust the longer blue pen position. Once the pen is set, the Pen Home button will move the longer blue pen to the outer edge of the chart and the shorter red pen will move to its new position. Each time pen home is pressed the two pens will switch positions (moving the most recently adjusted position) until the On/Off button 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.

Solid Green - AC Power with Battery Backup
Blinks Red - AC Power with Low Battery or No Battery

Blinks Green - Battery Only
Solid Red - Battery Only (Low Battery)

  • If your chart does not have an Rh line it uses the same scale as the temperature.
  • Try slower, firmer key presses.
  • Maybe the unit is locked up. If the chart recorder is locked up there will be no response to button presses, however, the unit may appear to be working, but the readings won't change and the chart will not rotate. To correct this, remove ac and battery power then re-power.
  • Check AC adapter connection
Untitled Document
  • When the backup battery is low, the LED will flash red until the battery has been replaced.

Probe not plugged into recorder.

Plug K-thermocouple into back of recorder

What is the tolerance of the unit it is being compared to?

It's ok if the unit is within the sum of the two tolerances

Remember that the unit's tolerance speaks to the Chart Recorder only, there is any additional that applies to the probe

Has an outside calibration house attempted calibration? It may not have been adjusted properly

When was the last time the unit was sent to the Dickson Calibration Lab for a recalibration?

Walk through zero adjustment, found in the manual

For units with Pen Adjustment - rotate screw to adjust the unit to match another unit of greater accuracy after both units have stablized in the same environment.

Chart Recorders - make sure the correct chart is being used.

K-Thermocouple Units
K-Thermocouple capable units are capable of using any K-type thermocouple probe or extension but keep in mind that long extensions to extend the distance may require a Zero adjustment. (Refer to manual)
As a general rule: If the unit is not responding properly, and you have more than one thermocouple, swap probes to see if it is the probe or the unit that is defective.

Voltage Recorders

Make sure the output signal of the transmitter is calibrated to its full measuring range. 

Make sure the range selected on the recorder matches the transmitter exactly and that the proper chart is being used.