products

Dual Channel Bearing Vibration
Transmitter for Piezoelectric Sensors
 Highly flexible due to
numerous hardware options
 Precisely adaptable to the
requirements by versatile
combination possibilities
 Applicable for the operation
of sensors in explosive areas
 For measurement and
processing absolute vibration
signals
 Frequency range up to 12 kHz
 Inputs for capacitive and
piezoelectric absolute vibration
sensors
 Integrated microcontroller
 Corresponds to the standards
VDI 2059/.. and API 670
 Two redundant 24 V DC
supply inputs
 Supervision functions for
electronic and sensors
 To be mounted directly at the
machine
 2 Current outputs 0/4...20 mA
 Up to 5 configurable function
outputs
Application:
The MMS 3125/.. dual channel bearing
vibration transmitter is part of the
revised MMS 3000 transmitter system
for monitoring and protecting any kind
of turbo machines.
The transmitters of the new generation
are characterised by their highly flexible
hardware options and their
versatile combination possibilities and
can thus optimally be adapted on the
demands of the respective plant.
They permit economic measurement
and supervision of absolute bearing
vibrations with capacitive or piezoelectric
absolute vibration transducers.
Application fields of the transmitters are
all kind of turbo machines, fans,
compressors, gear boxes, pumps and
similar, rotational machines with plain
bearings, as well as machines with
rolling bearings.
Due to the bus capability, MMS 3000
transmitters are applicable for big
systems with programmable logic
controls and host computers as used in
power stations, refineries and chemical
plants, as well as for small plants with
only few measuring points and decentralized
data processing.
The inputs of the transmitter can be
operated with both, epro standard
absolute vibration transducers of type
PR 9264/.. and with piezoelectric IPC
sensors.
Function and Design:
The MMS 3125/.. Dual Channel
Bearing Vibration Transmitter converts
the input signal of vibration transducers
in an electric signal proportional to the
vibration depending on the chosen
signal evaluation. At this, the kind of
evaluating the characteristic also
depends on the chosen sensor type.
The integrated module and sensor
supervision detects fault functions of
both - sensor and module electronic. In
error situations the status of the ”OK”
output changes and the 4...20 mA
current output indicates 0 mA.
All required configurations are made by
means of the MMS 3910W configuration
software, component of the software
packet which is part of the MMS
ParaKit. The transmitters are delivered
with a standard configuration suitable
for most applications, if desired, any
other configuration can be prepared in
the factory.