Operation
Service Menu
Thermo Fisher Scientific Model 49i Primary Standard Instruction Manual 3-75
Calibrate Flow Zero The Calibrate Flow A Zero screen calibrates the flow sensor at zero flow.
The Calibrate Flow B Zero screen functions the same way.
Note The pump must be disconnected before performing the zero
calibration.
• In the Main Menu, choose Service > Select Flow Calibration A or B >
Zero.
• Press to save the current flow reading as the zero reading.
Calibrate Flow Span The Calibrate Flow A Span screen allows the user to view and set the flow
sensor calibrate span point. The calibrate Flow B Span screen functions the
same way.
Note An independent flow sensor is required to read the flow, then the
operator enters the flow value on this screen to perform the calibration.
• In the Main Menu, choose Service > Select Flow Calibration A or B >
Span.
• Use , , and to move and change the value.
• Press to save set to value as actual value.
CALIBRATE FLOW A ZERO:
CURRENTLY: 0.608 LPM
SET TO: 0.000 LPM ?
DISCONNECT PUMP AND
SAVE ZERO PRESSURE
RANGE AVG DIAGS ALARM
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