MODEL: M2PRU
Super-mini Signal Conditioners Mini-M Series
PULSE SCALER
(field-configurable)
Functions & Features
• Converts pulse rate into convenient engineering unit for
display on a totalizing counter or meter
• Excitation
• Scaling factor adjustable of 1.0000 × 10
0
to 0.0001 × 10
–6
• Various outputs (open collector, voltage pulse and AC/DC
switch)
• Three-way isolation
• CE marking
• UL approval
Typical Applications
• Positive displacement flowmeters and turbine flowmeters
• Magnetic tachometers
Model
23 (.91)
76
(2.99)
mm (inch)
124
(4.88)
MODEL: M2PRU–[1][2][3]–[4][5]
ORDERING INFORMATION
• Code number: M2PRU-[1][2][3]-[4][5]
Specify a code from below for each [1] through [5].
(e.g. M2PRU-A24A-M2/CE/Q)
• Scaling factor (e.g. 0.7000 × 10
–2
)
• Specify the specification for option code /Q
(e.g. /C01/S01)
[1] INPUT
A1: Open collector
A2: Mechanical contact
C: Voltage pulse (sensitivity 2 V)
H: Two-wire current pulse
[2] EXCITATION
4: 12 V DC / 30 mA
7: 24 V DC / 30 mA
[3] OUTPUT
A: Open collector (max. 100 kHz)
M: 5 V pulse (max. 100 kHz)
N: 12 V pulse (max. 100 kHz)
P: 24 V pulse (max. 100 kHz)
R: AC/DC switch (max. 1 kHz)
[4] POWER INPUT
AC Power
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V,
47 – 66 Hz)
(90 – 264 V for UL)
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
R2: 11 – 27 V DC
(Operational voltage range 11 – 27 V, ripple 10 %p-p max.)
(Select ‘/N’ for ‘Standards & Approvals’ code.)
P: 110 V DC
(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)
(110 V ±10 % for UL)
[5] OPTIONS (multiple selections)
STANDARDS & APPROVALS (must be specified)
/N: Without CE or UL
/CE: CE marking
/UL: UL approval (CE marking)
OTHER OPTIONS
blank: none
/Q: Option other than the above (specify the specification)
(UL not available)
SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to M-System's web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating
TERMINAL SCREW MATERIAL
/S01: Stainless steel
CAUTION
1) The M2PRU’s output waveform is not uniform due to its
scaling method. The user must be aware that it may be
inconvenient for certain types of application.
2) The M2PRU is designed to accept at the maximum of 100
kHz, which may cause errors due to chattering in the input
pulses.
A filter circuitry (time constant: approx. 1 msec.) is
incorporated to eliminate unwanted chattering when the
mechanical contact input is specified. It is effective for
Rugghölzli 2
CH - 5453 Busslingen
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
www.sentronic.com
Produkte, Support und Service
SENTRONIC
AG
