WIKA CTH6300 - Handbuch (Seite 24)

24 WIKA operating instructions, models CTH6300 and CTH6500
2079988.04 07/2014 GB/D
GB
6. Commissioning, operation
6.4.3 Activating/deactivating display option differential temperature [Lin2]
(only for 2-channel instruments)
Press the ENTER/MENU key and select Lin 2 using the arrow keys ▲▼. Then press
ENTER/MENU again. Now activate or deactivate the display “Differential temperature”
T1-T2 using the arrow keys ▲▼.
If T1-T2 is visible on the LCD, the differential temperature is active. Confirm the required
setting by pressing ENTER/MENU.
Press ESC to return to the measuring mode.
To display differential temperature, both channels must be activated.
6.4.4 Calibration mode CAL
This measuring instrument allows to perform a simple calibration when replacing the
probes in order to compensate the manufacturer-specific tolerances of the probes and
guarantee a consistently high accuracy of the measuring chain.
The instrument has 3 different calibration modes:
[OFF]: Standard characteristic curve
for example, for Pt100 resistance measurements DIN IEC 60751
oP1: Calibration by code
The 2 x 4-digit code is displayed clearly visible on the handles of our probes,
corresponds to a 2-point calibration
oP2: Physical calibration
Calibration with test variables: 1-point, 2-point or 3-point calibration possible
The current calibration coefficients are given in the enclosed traceable calibration
certificate.
CAL = calibrate
Press the ENTER/MENU key and select CAL using the arrow keys ▲▼, then press
ENTER/MENU again. A small 1 appears on the left side of the display, it indicates the
channel. Use the arrow keys ▲▼ to select the channel (1 or 2) to be calibrated.
MENU
Unit Prob Lin2 CAL Chnl ArEA Lo6