Forma Scientific 8525 - 4.4 d Chart Recorder Calibration

Forma Scientific, Inc.__________________________________________________Start-up
4-4
2. Press and hold for five seconds either button #1 or button #2.
3. Release the button and the green LED will begin to flash. Count the number of
flashes to determine the present program setting.
4. To change the program setting, press the left or right arrows to increase or decrease
the count.
5. When the desired program number is flashing, press the change chart button to bring
the pen arm back onto the chart. Recording will begin in the new program.
Note: Changing ranges may require an offset calibration as outlined in the following
procedure. See the CoBex Installation, Operation and Service Instructions
manual.
Program No. Range
Program 1 -40°C to 30°C
Program 2 0°C to 60°C
Program 3 -100°C to 38°C
Program 4 -5°C to 50°C
Program 5 0°C to 100°C
Program 6 -100°C to -200°C
Program 7 -115°C to 50°C
Program 8 -10°C to 70°C
d. Calibrating the chart recorder
The recorder must be in service for 24 hours before performing the following
calibration procedure.
1. Place an accurate thermometer in the chamber next to the recorder’s probe.
2. After about three minutes, compare the thermometer with the chart recorder.