Electro-Chemical Devices (ECD) T80 - Manual (Page 39)

4.4.2 S TANDARDIZE
Leave the sensor in the process solution or in the air, take a grab sample from the process and determine the
dissolved oxygen concentration or enter the temperature and pressure corrected value for air.
Action Prompt
Double Press any Button MENU HOME, Hold is OFF
Press HOLD Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration
Press CAL Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)
Press NO Place Sensor in Air or the process solution
Press STAND Enter Value
Press ▲ ▼ NEXT xxx.xx ppm or % SAT (use arrows and NEXT to enter process value)
Press OK xxx.xx ppm, xxx.x mV, Accept Value?
Press YES OFFSET: 0.00 ppm xx.x mV, SLOPE: xx.xx mV/ppm (this data written to Log)
Press OK Back to Cal Menu
Press HOME Hold is ON (Press HOLD to turn off Hold)
Press HOLD Turn off Hold
Press EXIT Main Display
4.4.3 M
ANUAL
C
AL
Leave the sensor in the process solution or in the air, take a grab sample from the process and determine the
dissolved oxygen concentration or enter the temperature and pressure corrected value for air.
Action Prompt
Double Press any Button MENU HOME, Hold is OFF
Press HOLD Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration
Press CAL Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)
Press NO Place Sensor in Air or the process solution, it doesn’t matter which
Press MANUAL Enter Zero Value
Press ▲ ▼ NEXT 000.00 ppm or % SAT (use arrows and NEXT to enter ppm value)
Press mV Button Enter mV value for zero ppm solution (default use 0.5 mV)
Press ▲ ▼ NEXT 000.00 mV (use arrows and NEXT to enter mV value)
Press OK OFFSET: 0.00 ppm 00.5 mV, Accept Value?
Press YES Slope 000.0 mV/ppm or 000.0 mV/% SAT
Press ▲ ▼ NEXT 048.00 mV/ppm (use calculated value or 45 mV/ppm or 4.0 mV/% SAT)
Press OK Slope 48.00 mV/ppm, Accept this Value?
Press YES Back to Cal Menu
Press HOME Hold is ON (Press HOLD to turn off Hold)
Press HOLD Turn off Hold
Press EXIT Main Display
4.5 TRITON® D
ISSOLVED
O
XYGEN
C
ALIBRATION
P
ROCEDURES
Before starting a calibration Enter the Salinity and Barometric pressure in the CONFIG→SENSOR menu. The
default values are Salinity 0% and 1013 mbar. Use Table 2 above to calculate the pressure using elevation if the
actual pressure is not known.
The TRITON® DO80 sensor was calibrated at the factory prior to shipment and should not require a re-
calibration at start up. Calibration is required whenever the fluorescence cap/membrane cap is replaced.
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