TDS-100H Handhold Ultrasonic Flowmeter Ver.8.08 - 17 -
§3.8 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.
§3.9 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.
§3.10 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.
§3.11 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.
§3.12 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.
§3.13 How to use the operation locker
The system locker provides a means of preventing inadvertent configuration changes or
totalizer resets.
When the system is locked, menu window browsing can be done without affecting any change,
but any modifications are prohibited.
The system can be locked without a password or with a one 1 to 4 digit password. With a
no-password locking, directly press the ENT key when the password input prompt displays.
