C.B.S. Scientific TTGEK-2401-220 - Manual (Page 55)

TTGE Instruction Manual, version 8/30/2011
55
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5.2 Maintenance & Calibration- continued
To access the calibration display(s), rotate the Select/Set Knob until the Instrument Identification display appears.
This is the last accessible screen as you rotate the Select/Set Knob counter- clockwise.
With the Instrument ID screen displayed, press and hold the Timer Button while also pressing the Select/Set Knob. A
password box will appear on the Instrument ID screen.
The Calibration access password is TUSER. It is case sensitive and entered by rotating the Select/Set Knob until the
desired character appears and then pressing the Select/Set Knob. The cursor will automatically advance to the next
field in the password entry display. Once the final character is entered, rotate the knob and the following Calibration
screen(s) will be available.
On Digital Controllers, only the Calibration User - Internal Probe Calibration will appear. On Programmable
Controllers, the Calibration User – External Probe Calibration screen will also appear if an external probe is
connected to the Controller.
To perform a calibration, go to the appropriate Calibration User screen and press the Select/Set Knob. Rotate the
Select/Set Knob until the offset value equals the difference between the probe temperature reading and the reference
temperature probe. Press the Select/Set Knob to accept the offset value.
NOTE: Allow the temperature reading at the probe to stabilize before making adjustments.
NOTE: The Calibration User display(s) remains available only while Controller power is On. If the Controller in placed
in Standby or main power is disrupted, the display(s) will have to be re-enabled by entering the Calibration access
password.