Thermo Fisher Scientific Alpha DO 2000 - Manual (Page 14)

Instruction manual
Alpha DO 2000
2.3.1 Display Overview
The LC display shows two alpha-numerical fields for parameters and
measured values as well as various mode and status indicators.
MEAS SETUP CAL
HOLD
°C °F
ERR
ATC
%
ppm
mg/l
-8.8.8.8
READY
-8.8.8.8
Mode indicators:
MEAS: measurement mode
SETUP: Setup mode
CAL: Calibration mode
Status indicator:
READY: Visible after successful calibration
HOLD: Relay position and current output are
frozen
ATC: Visible in ATC (Automatic Temperature
Compensation) mode. Not visible in the Manual
Temperature Compensation mode. “ATC”
flashes if the temperature probe is faulty in its
ATC mode
ERR: Error or alarm indicator
2.3.2 Key Functions
Key Description
Enter Calibration mode (requires access code)
Enter Setup mode (requires access code)
Access sub functions (parameters) within a function group of Setup mode
Confirm (store) setup parameters and numerical values
Start/Confirm calibration in Calibration mode.
Select function group in the Setup mode.
Set parameters and numerical values (if key is pressed continuously, the setting
speed increases).
Control the relays in MANUAL relay operation.
Returns to “Measurement mode” when both keys are pressed simultaneously.
Display limit values for SP1 and SP2 and settings for wash contact in AUTO
relay operation.
Toggle between RELAY A, RELAY B or Wash relay in MANUAL relay operation
Toggle between AUTO & MANUAL relay operation modes. (requires access
code to switch to MANUAL relay operation mode)
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