Chapter 5 Flow meter operation method
www.supmea.com
16
positive pole of the power supply, Fout is connected to the pulse signal, and F_V-
does not need to be connected.
note! The pulse signal power supply voltage range is DC5V
～
24V.
(5) Battery replacement
Accumulatively powered on for two years, unconditionally replace the battery. If
the meter does not display or displays abnormally within the battery lifespan, and
the measured battery voltage is lower than 2.8V, you should immediately cut off
the power supply and replace the battery, otherwise the circuit unit in the meter will
be damaged.
When replacing the battery, pay attention to the polarity of the battery to be
consistent with the battery box label, and not reverse it. Each time the cover is
opened and then assembled, the front and back covers of the instrument should
be tightened.
5.3. Turbine flow meter without display
5.3.1.
Main technical parameters
Power supply: +24V DC
Output signal: 4~20mA current output
5.3.2.
Usage
(1) The complete connection method of the flow meter (see Figure 14).
(2) Schematic diagram of internal wiring (see Figure 15)
(3) Schematic diagram of fine adjustment of full-scale flow (see Figure 17)
Full scale fine-tuning button: press K1 and K2 at the same time, LED2 lights up to
enter the adjustment mode and release the button, press K1 to increase the
current, and press K2 to decrease the current. It will automatically exit the
adjustment mode if there is no operation for 1 minute.
*Note: The current has been adjusted before the product is sold, please do not
adjust it at will;
