em-tec BioProTT - Selection of Calibration Factor

BioProTT
TM
Flow Measurement System Version 1.00 page 42 of 75
Screen
Meaning
Calibration Table
1
Medium: Water
Tubing: PVC
Temperature: 23ºC
Range: 0-10 l/min
Calibration Table
sel
2
Medium: Buffer
Tubing: Silicone
Temperature: 21ºC
Range: 0- 5 l/min
The calibration table is an attribute connected to the sensor.
When the device is powered on/off and/or the sensor is changed
the table is reset to table one (1).
Selecting a different calibration table does not change the
calibration factor.
When selecting a new table, “sel” appears on the screen. Please
confirm the new selection with the Enter button.
If the calibration table is changed, please zero the system at zero
flow for optimal measurement accuracy. Please also ensure that
the actual system setup and the calibration parameters shown in
the table are matching, otherwise inaccurate readings can occur.
7.7.3.3 Selection of Calibration Factor
It is possible to adjust the calibration factor to accommodate e.g. a different medium or
temperature compared to the calibration settings of the connected Clamp-On Transducer.
The calibration factor can be adjusted in the following range: 0.50 to 1.50
Screen
Meaning
Calibration Factor
1.00
Flow: 0.400
l/min
Calibration Factor
sel
1.25
Flow: 0.500
l/min
While on the calibration screen, the actual flow value is shown.
The default setting (factory setting) the calibration factor is one
(1.00).
The calibration factor is an attribute connected to the sensor.
When the device is powered on/off and/or the sensor is changed
the factor is reset to one.
By pressing the Enter button and using the arrow keys the factor
can be changed in a range from 0.50 to 1.50 in 0.01 steps.
Pressing the Enter button again will store the value.
Changing the calibration factor will instantly effect the flow
value displayed on the screen and also on the analogue and
digital output.
The calibration factor alters the flow by the following equation: