Transducers for Measurement Bridges
General Description
These transducers amplify the output signals of resistive measurement bridges and convert them to normalised output voltages (e.g. 0-10 V) or currents (e.g. 4-20 mA). Frequency output is available as an option, max. 10 kHz. In the programmable modules (SCM 90, SIGS 15), switches are used to select the zero point, measurement range, bridge supply voltage and the output. A cut-off frequency (3 Hz - 15 kHz) can also be set in the SCM 90S version.
- For pressure and force cells, strain gauges and other measurement bridges, bipolar input and output (down to -10 V).
- Differential, high-resistance voltage input.
- High precision voltage source to supply the bridge (5 V or 10 V, max. 120 mA). Special design with current source is available on request.
- In the SCM 90/SIGS 15 versions, switches are used to select zero point (max. ±15 mV), measurement range (max. ±127 mV), bridge power supply (5/10 V), output (voltage or current).
- Option: frequency output (max. 10 kHz), galvanic isolation, can be connected to a bus.
- Interference and destruction protection: secure against short circuits and terminal reversal, up to 40 VDC overvoltage protection at all inputs, fulfills all EC-EMC standards (EN50082/IEC 801).
Overview
SCM 90S V/mA programmable
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Modules for DIN-Rails |
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| Type | Output | Power Supply | Range | Remarks |
|---|---|---|---|---|
| SCM 70 | V | 19-30V/±15V | fixed | replacement: SCM90 |
| SCM 82 | 0/4-20mA | 20-30V | fixed | replacement: SCM90 |
| SCM 90 | V/mA | 20-30V | programmable | |
| SCM 90S | V/mA | 20-30V | programmable |
2 frequencies |
Please note: SCM70 and SCM82 are no more available, replacement is SCM90
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Printed Circuit Board/Euro-Card Modules |
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| Type | Output | Power Supply | Range | Remarks |
|---|---|---|---|---|
| SIGS 10 | V | 18-30V/±15V | fixed | replacement:SIGS15 |
| SIGS 32 | 0/4-20mA | 18-30V | fixed | replacement:SIGS15 |
| SIGS 15 | V/mA | 18-30V | programmable | |
| SIGS 15S | V/mA | 18-30V | programmable | 2 frequencies |
Please note: SIGS 10 and 32 are no more available, replacement is SIGS15
Further Information
- Data sheet COM 90
- For calibration of measurement range and zero point see General Operating Instructions
- For EMC and cabling guidelines see Cabling and Installation Requirements