TF1100-EH transit-time handheld flowmeter manual
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the flow rate at the time of power on and off
M+1
Displays the total working time of the instrument
M+2
Displays the last power-off date and time
M+3
Displays the last power-off flow rate
M+4
Displays the times of instrument powered on(the instrument has been powered
on). Before instrument shipped, We have calibrated and tested, so the times is
usually not zero.
M+5
A scientific calculator for the convenience of field working. All the values are
in single accuracy. The drawback is that the user can’t operate it by direct
key-pressing
M+8
Ultrasonic Wave Shape
Note: The pulse output is utilized to transmit information to external counters and PID
systems via a frequency output that is proportional to system flow rate or total flow (can be
configured in Menu). The frequency output range of the Pulse is 0–9999 Hz. The type of
pulse output is an open-collector transistor (OCT) type that does not source voltage at its
output, requiring an external power source and pull-up resistor. Resistor selection is based
on the input impedance of the receiving device. Select a resistor that is a maximum of 10%
of the input impedance of the receiving device, but do not exceed 10k-ohms. See the Figure
3.3, the voltage value of External DC power Supply is depending on Pulse Output receiver,
3-12V is allowable.
