Signal Conditioners

Metra has been manufacturing amplifiers for piezoelectric transducers for over 50 years. We offer economic charge amplifiers and signal conditioners for IEPE transducers including microphones.

Charge and IEPE Conditioners	M72A1	M72A3	M72S1	M72B1	M72B3	M72R1
For piezoelectric transducers with charge or IEPE output Amplification, filtering and integration M72R1 and M72S1 for 19" racks Rack cases M72S8 and M72R8 with USB Charge attenuators MQ20/MQ40 available as accessory for high inputs	Please click for more pictures Single channel charge/IEPE conditioner M72A1 Single channel charge/IEPE conditioner M72A1 Single channel charge/IEPE conditioner M72A1 Triple channel charge/IEPE conditioner M72A3 Triple channel charge/IEPE conditioner M72A3 Triple channel charge/IEPE conditioner M72A3 Single channel charge/IEPE conditioner M72S1 Single channel charge/IEPE conditioner M72S1 Single channel charge/IEPE conditioner M72S1 Single channel charge/IEPE conditioner M72B1 Single channel charge/IEPE conditioner M72B1 Single channel charge/IEPE conditioner M72B1 Triple channel charge/IEPE conditioner M72B3 Triple channel charge/IEPE conditioner M72B3 Triple channel charge/IEPE conditioner M72B3 Single channel charge/IEPE conditioner M72R1 Single channel charge/IEPE conditioner M72R1 Single channel charge/IEPE conditioner M72R1 Power supply adapter for D-Sub connector of M72R1 and M72S1 Rack case M72S8 for 8 modules M72S1 (tower feet assembled) Rack case M72S8 for 8 modules M72S1 (rear view, tower feet assembled) Rack case M72R8 for 8 modules M72R1 (without modules) Rack case M72R8 for 8 modules M72R1 (rear view, without modules)
Channels	1	3	1	1	3	1
Gain charge / IEPE	0.1 / 1 / 10 / 100 / 1000 mV/pC; 0 / 20 / 40 / 60 dB			0.1 / 1 / 10 / 100 / 1000 mV/pC; 0 / 20 / 40 / 60 dB
Integrators	single and double			single and double
Input of transducer sensitivity	4 digits; 0.001 to 9999 mV or pC/mech. unit by keys and LED display			none	none	none
TEDS support	IEEE 1451.4; templates 25 for force and acceleration and 27 for microphones			none	none	none
Low pass filters	0.1 / 1 / 10 / 50 kHz			0.1 / 1 / 10 / 50 kHz
High pass filters	0.1 / 3 Hz			0.1 / 3 Hz
Inputs / outputs	BNC sockets at rear of instrument			BNC sockets at rear of instrument
Level indication	in percent by LED display and overload LED			overload LED
USB interface	none	none	only with rack case M72S8 Rack case M72S8 for 8 modules M72S1 (tower feet assembled) Rack case M72S8 for 8 modules M72S1 (rear view, tower feet assembled)	none	none	only with rack case M72R8 Rackgehäuse M72R8 für 8 Module M72R1 (ohne Module) Rack case M72R8 for 8 modules M72R1 (rear view, without modules)
Power supply	7 to 30 V with mains plug adapter		from rack case	7 to 30 V with mains plug adapter		from rack case

Data sheet (1.2 MB)
Instruction manual (250 kB)
Charge attenuators MQ20 / MQ40 (100 kB)

Device driver for M72R8 and M72S8 rack cases
Setup tool for M72R8 and M72S8 rack cases

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8 Channel IEPE Conditioner	M208A	M208B
For piezoelectric accelerometers, force and pressure sensors and microphones with IEPE output Suitable as signal conditioner, meter and monitor (M208A) Measurement of RMS and peak values (M208A) Embedded web server for remote measurement and monitoring (M208A), Example of web page hosted by the M208A Serial interface with PC software for setup and metering (M208A) High pass, low pass and integrator plug-in modules TEDS support (M208A) Relay output (M208A) Shared output Compact 19" rack case with low depth	M208A - All-In-One: Signal conditioner with filters and integrators RMS/Peak vibration meter Vibration monitor with relay output Web server for remote measurement Please click for details M208A: Keypad and display M208A: Rear panel with interfaces and outputs M208A: Meter display M208A: Gain setting 8 Channel IEPE Conditioner M208B M208B: Rear panel M208B: Gain setting M208A/B: High pass and low pass modules M208A/B: Single and double integrator modules M208A: PC control software for RS-232 - channel settings M208A: PC control software for RS-232 - channel overview M208A: PC control software for RS-232 - device overview M208A: HTML page of embedded web server
Gain	0.1 .. 1000, incremental	1 / 10 / 100 / 1000
Frequency range	0.1 Hz .. 100 kHz	0.1 Hz .. 100 kHz
Readout display	4 digits; RMS or peak; 1 s multiplex; with mechanical unit	-
TEDS support	automatic transducer sensitivity normalization	-
Ethernet	embedded web server hosts HTML page for readout and setup, Example	-
RS-232 Interface	master and slave interface for PC control of up to 8 units by supplied control software or ASCII command set	-
Relay output	1 relay with adjustable threshold for each channel	-
High pass filter modules	FB3- 3 / 5 / 10 / 30 / 50 / 100 / 300 / 500 / 1000 Hz (Butterworth, 2nd order)	FB3- 3 / 5 / 10 / 30 / 50 / 100 / 300 / 500 / 1000 Hz (Butterworth, 2nd order)
Low pass filter modules	FB2- 0.1 / 1 / 3 / 5 / 10 / 30 / 50 / 100 kHz (Butterworth, 4th order)	FB2- 0.1 / 1 / 3 / 5 / 10 / 30 / 50 / 100 kHz (Butterworth, 4th order)
Integrator modules	single integrator 3 - 1000 Hz (FBV) and double integrator 5 - 200 Hz (FBD)	single integrator 3 - 1000 Hz (FBV) and double integrator 5 - 200 Hz (FBD)
Connectors	8 BNC inputs; 8 BNC outputs; shared BNC output; Sub-D output	8 BNC inputs; 8 BNC outputs; shared BNC output
Power supply	10 - 28 VDC; mains plug adapter 115 / 230 VAC	10 - 28 VDC; mains plug adapter 115 / 230 VAC

Data sheet (400 kB)
Instruction manual M208A (1,5 MB)
Instruction manual M208B (500 kB)

M208A operating and measuring software for Windows PCs
Firmware update

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IEPE Conditioning Modules

NEW M29

NEW M33

M32

Power supply and signal conditioning for IEPE sensors
Compact and robust
Modular system: Two screwed-in plugs provide mechanical and power supply connection to neighboring modules
M32 with 3 gains
M33 with 4 gains
M32 with plug-in low pass filter
M33 with plug-in high pass / low pass filter or integrator
Sensor status LED shows 3 conditions
DIN rail adapter available

Please click for details

Gain

1 / 10 / 100 / 1000

1 / 10 / 100

Low pass filter

Plug-in filter FB2; 0.1 .. 50 kHz; 4 poles

Plug-in filterFB2; 0.1 .. 30 kHz; 4 poles

High pass filter

Plug-in filterFB3; 3 .. 1000 Hz; 2 poles

Integrator modules (replace high / low pass)

Plug-in integrator FBV (single) or FBD (double)

Input / output socket

BNC

Power supply

5 .. 28 VDC

5 .. 26 VDC

Data sheet (1,4 MB)
Instruction manual (700 kB)

Data sheet (1,4 MB)
Instruction manual (600 kB)

Data sheet (300 kB)
Instruction manual (100 kB)

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Remote Charge Converter	IEPE100
In-line charge amplifier for piezoelectric sensors with charge output IEPE compatible output For long distances between sensor and instrument Suitable for standard instrumentation Switchable gain ranges	Please click for details Opened case with DIP switches for gain selection
Gain (selectable by DIP switches)	0.1 mV/pC 1 mV/pC 10 mV/pC
Frequency range	0.2 Hz .. 65 kHz (-3 dB)
Input / Output	BNC female / male

Data sheet (200 kB)
Instruction manual (700 kB)

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Products

Service

Signal Conditioners

M208A - All-In-One: