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Operating Instructions
4
Overview
4.1 Keypad and Display
4.1.1
Keypad
•
Perform rapid calibration
•
Allows entry to Set up mode
•
Select individual functions within the function group of Set up mode
•
Store input data in the Set up mode
•
Start calibration in the calibration mode
•
Select various function groups in the Set up mode.
•
Set parameters and numerical values in sub functions of Set up mode
If pressed continuously, the setting speed increases
•
Control the relays in the MANUAL function
•
Return to the Measurement mode when both keys are pressed together
•
Switch between AUTO and MANUAL relay operation using a code
•
Display set-point values for the switch contacts in AUTO operation mode
•
Switch between RELAY A and RELAY B in MANUAL relay operation mode
4.1.2
Display
The LCD display features two numerical displays that show status messages and measured values for easy,
quick reference. The display provides short-text information for setting parameters and configuration.
HOLD SETUP
MEA
READY
-8.8.8.8
1.8.8.8
8
•
Display for RELAY A/B. Green LED indicates measured value within limit while
RED LED indicates measured value outside limit.
•
Alarm display if limit value overshoot or the ATC connection is broken.
•
HOLD: Relay position and current output are frozen
•
SETUP: Set-up mode of function groups
S
CAL
•
MEAS: Measurement mode
•
CAL: Calibration mode of Resistivity
mΩ
•
READY: Comes on after a successful calibration
o
C
•
ATC: Comes on in the ATC mode. Disappears in the
ATC
Manual temperature Compensation mode. "ATC" flashes
if the temperature probe is faulty in its ATC mode
•
Range No.: Indicates the measurement range selected
5
Alpha RES 1000
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