Overview; Keypad And Display; Keypad; Display - Thermo Scientific ALPHA DO 1000 Manual

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
•
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 limit set-point values for the switch contacts in AUTO relay 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
READY
- 8 . 8 . 8 . 8
- 1 . 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.
If pressed continuously, the setting speed increases
•
MEAS CAL
•
ppmt
•
mg/l
%
•
•
° C
•
ATC
HOLD: Relay position and current output are frozen
SETUP: Set-up mode of function groups
MEAS: Measurement mode
CAL: Calibration mode of Dissolved Oxygen
READY: Comes on after a successful calibration
ATC: Comes on in the ATC mode. Disappears in the
Manual temperature Compensation mode. "ATC" flashes
if the temperature probe is faulty in its ATC mode
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