5
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Analyzer Hardware Configuration and Calibration
Section
Section
Thermo Scientific
Orion 2295 Phosphate Analyzer
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29
The Orion 2295 Phosphate Analyzer relies on a PID (Proportional, Integral, Derivative)
algorithm setting to control and maintain the cell at the set point. The following procedure allows
for tuning and calibrating of the thermistor in case it was replaced or required adjustment.
Heater temperature calibration:
MENU
➔
SERVICES
➔
HARDWARE SETUP
➔
CALBRATE THERMISTOR
Press F3 key to RESET thermistor calibration value to FACTORY DEFAULTS.
The operator is asked to read the temperature of the reaction using an external digital
thermometer and enters the value. The unit will make appropriate correction if needed.
Editing the calibration results:
Upon successful completion of temperature calibration, the new calibrated temperature is
available for further editing. From the MAIN MENU, follow the sequence:
MENU
➔
SERVICE
➔
HARDWARE SETUP
➔
EDIT CALIBRATED VALUES
Pumps Calibration
The Orion 2295 Phosphate Analyzer uses peristaltic pumps to move fluids through the reaction
cell. The pump tubing will require replacement periodically. Please refer to
Section 9
for details.
The maximum rate of flow of the fluid is dependent on both the inner diameter of the tubing
conveying the fluid and the rpm of the pump. The pumps are used to move the following fluids:
sample, standard, and reagents.
WHEN REPLACING WITH SAME TYPE FACTORY TUBING, USER MAY BYPASS ANY
CALIBRATION AND USE FACTORY DEFAULT VALUES. IF SUBSTITUTE TUBING IS USED,
PUMP CALIBRATION IS REQUIRED TO INSURE ACCURATE DOSING.
Pumps Calibration Method
From the MAIN MENU, follow the sequence:
MENU
➔
SERVICES
➔
HARDWARE SETUP
➔
CALIBRATE PUMPS
Select the pump to be calibrated. The user is now asked to prime the pump with de-ionized
water and to respond when ready. The pump calibration procedure is aborted if the user fails to
confirm readiness to pump de-ionized water within 90 seconds.
