Flow Rate Adjustment (Alpha); Pressure Sensor Adjustment; Pressure Transducer Zero - Thermo Scientific Surveyor LC Pump Plus Hardware Manual

Flow Rate Adjustment (Alpha)

Pressure Sensor Adjustment

Pressure Transducer Zero

Thermo Scientific
The alpha value for your Surveyor LC Pump Plus is factory-calibrated based on a flow rate of
1.000 mL/min for distilled water. A sticker containing the factory-calibration value is located
inside the pump on the motor casing. You can optimize the alpha value for your application
by updating the alpha setting. The range for alpha values is 1 to 9.9. If you are pumping
water, decreasing the alpha value by 1 decreases the flow rate by 1 percent, whereas increasing
the alpha value by 1 increases the flow rate by 1 percent.
Reset this parameter when the pressure sensor is replaced. Each pressure sensor is labeled with
a data sticker that contains a "0.XXXX" value for the pressure sensor adjustment setting.
Multiply this value by 10 000 and then update the pressure sensor adjustment setting for your
Surveyor LC Pump Plus.
The pressure readout for the Surveyor LC Pump Plus is produced by a cell type
potentiometer. Because this type of device tends to drift by small increments, you must
occasionally re-zero the readout. To update the pressure transducer zero value, turn off the
pump flow and open the drain valve knob before clicking the pressure transducer zero button
in the software program that operates your pump.
5
Diagnostic Tests and Calibration Options
Calibration Options
Surveyor LC Pump Plus Hardware Manual 93