§4.6 How to open or shut the totalizers
Use M34, M35 and M36 to turn on or turn off the POS, NEC; or NET totalizer respectively.
§4.7 How to reset the totalizers
Use M37 to reset the proper totalizer.
§4.8 How to restore the flow meter with default setups
Use M37, when the 'selection' message is displayed. Press the dot key first and the message
`Master Erase' will display, then press the backspace key
The master erase step will erase all the parameters entered by the user and setup the instrument with
default values.
§4.9 How to use the damper
The damper acts as a filter for a stable reading. If '0' is entered in window M40, that means there is
no damping. A bigger number brings a more stable effect. But bigger damper numbers will prevent
the instrument from acting quickly.
Numbers 0 to 10 are commonly used for the damper value.
§4.10 How to use the zero-cutoff function
The number displayed in window M41 is called the low-cutoff value. The flow meter will replace
these flow rate values that are absolutely less than the low-cutoff value with '0'. This means the
flow meter will avoid any invalid accumulation when the actual flow is below the zero-cutoff value.
The low-cutoff value does not affect the flow measurement when the actual flow is absolutely
greater than the low-cutoff value.
§4.11 How to setup a zero point
There exists a 'Zero Point' with certain installation which means the flow meter will display a
non-zero value when the flow is absolutely stopped. In this case, setting a zero point with the
function in window M42 will bring a more accurate measurement result.
Make sure that the flow is absolutely stopped, then run the function in window M42 by pressing the
ENT key.
§4.12 How to get a scale factor for calibration
A scale factor is the ratio between the 'actual flow rate' and the indicated value by the flow meter.
The scale factor can be determined by calibration with flow calibration equipment.
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INSTRU Q-FP 201
Handheld Ultrasonic Flowmeter
Summary of Contents for Instru Q-FP 201
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