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High-Voltage Safe Measurement Systems High-Voltage Safe Measurement Systems

HV STG4 ECAT MM series

High-voltage safe measurement with strain gauges

Type HV STG4 pro BS20

EtherCAT®-based measurement module for distributed use under demanding conditions in the high-voltage environment: robust, extremely compact and with 4 time-synchronous strain gauge inputs.


  • 4 time-synchronous strain gauge inputs galvanically isolated
  • Use standard strain gauge-based sensors from low-voltage applications safely in the HV environment
  • Measurement data rate up to 20 kHz per channel
  • Support of full and half bridge strain gauges with 6- or 4-wire connection
  • Precise acquisition due to very small input voltage range
  • Adjustable sensor supply voltages from 1 to 10 V
  • High resistance to interference due to ratiometric measuring principle and configurable software filter
DMS-Messmodul HV STG4 pro BS20
Measurement module for safe and precise strain gauge measurements: HV STG4 pro BS20


Thanks to galvanic isolation, half and full bridges as well as standard strain gauge-based sensors from conventional low-voltage applications can be used in conjunction with special sensor cables. This simplifies the application and configuration, as you can rely on kown sensors and assure HV safety.

The measurement module HV STG4 pro BS20 is the high-performance variant among the HV-safe strain gauge measurement modules: With the wider input voltage range, small as well as large strains can be measured precisely.

Technical Data

HV STG4 pro BS20
Inputs 4 time-synchronous strain gauge inputs
Type of bridge full and half bridges 120, 350, 700, 1,000 Ω
Bridge connection 4- or 6- wire
Measuring unit mV/V, µm/m
Measurement data rate /sending rate per channel 1, 2, 5, 10, 20, 50, 100, 200, 500 Hz and 1, 2, 5, 10, 20 kHz
Input voltage range ±11 mV, ±110 mV
automatically selected on the basis of the DMS-specific configuration information
Excitation voltage 1, 2.5, 5, 10 V
adjustable per channel , optionally switchable
Operating conditions
Nominal working voltages up to ±1,000 V
Housing protection class IP67
Operating temperature range -40 °C to +125 °C
Pollution degree 4
HV STG4 pro BS20 front view
HV STG4 pro BS20 front view
HV STG4 pro BS20 side view
HV STG4 pro BS20 side view

Housing variants

Designation Slide Case Large (SCL)
HV STG4 pro BS20



9.63 MB

287.48 KB

1.74 MB

415.85 KB

429.74 KB

1.38 MB

772.8 KB
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389.14 MB
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  • Configuration software for CSM measurement modules (incl. documentation)
  • with visualization software CSMview
  • System requirements: