MER-MAN-14V01 (1002)
Copyright © 2014 Defi ne Instruments
21
General frequency mode
General Frequency
mode allows an NPN or
PNP input (up to 2KHz) to be measured
and scaled to any engineering unit.
The meter can also provide up to 25mA to
power an external device.
Flow rate mode
Flow Rate
mode enables an input from an
NPN or PNP paddle type fl ow meter to be
converted to a fl ow rate. The input signal
(up to 2KHz) is converted into a fl ow rate
by programming the unit with the sensor
manufacturer's K-factor value.
The meter can also provide up to 25mA
to power a 3 wire NPN paddle type fl ow
sensor.
RPM mode
ToolBox
RPM
mode enables an input from
an NPN or PNP proximity sensor to be con-
verted to an RPM (Revs Per Minute) value.
The input signal (up to 2KHz) is converted
into RPM by programming the unit with
the pulses per revolution value.
The meter can also provide up to 25mA to
power a 3 wire NPN proximity sensor.
NPN open collector output
PNP open collector output
6.6 - Digital pulse
Frequency range
0–2000.0Hz
Sensors
Open collector (NPN, PNP)
Excitation
+22V DC, 25mA max
Response time
100msec
Soft ware modes
General frequency, Flow
rate (pulse), or RPM (pulse)
Linearity and repeatability
0.05%
Temperature drift
<50ppm/°C
