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TS621 Strain Gauge Amplifier

TS621 Strain Gauge Amplifier
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The TS621 Electronic Strain Gauge Amplifier provides outstanding signal conditioning capabilities suitable for use with most strain-gauge-based sensors. It is supplied in a DIN-Rail housing for convenient snap-in installation.

TS621 performance features include galvanic isolation, regulated power supply for the sensor, coarse and fine calibration adjustments, screw terminals for power and analog outputs, with a removable terminal block for the sensor input.


  • Designed for use with a wide range of strain-gauge-based force, load and tension sensors
  • Galvanic Isolation minimizes the chance for signal interference, including ground faults
  • 0-10VDC analog output
  • Provides accuracy of ±0.1%
  • Operating input power supply of 19-36 VDC, non-regulated
  • Includes excellent overload and reverse-polarity protection
  • Provides a well-regulated power supply of 10 VDC for sensor


In standard version the measurement amplifier offers a voltage output. The TS 621 can be extended with one additional output.
Option D 2nd voltage output 0 to ±10V
Option X 2nd voltage output 0 to ±10V
  • Additional amplification, selectable 2-, 3-, 4- or 5-times
  • filtered (cut-off-frequency 25Hz)
  • setting by DIP-switches
Option A Additional current output
  • bipolar 0 to ±20mA
  • unipolar 0 to +20mA
  • unipolar 4 to +20mA
  • setting by DIP-switches
TS621-AD Current output 0/4-20mA, filtered
  • bipolar 0 to ±20mA
  • unipolar 0 to +20mA
  • unipolar 4 to +20mA
  • cut-off frequency 0,5 / 5 / 10 / 20 Hz
  • setting by DIP-switches

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- bipolar 0 to ±20mA
unipolar 0 to +20mA
unipolar 4 to +20mA


Sensor TypesStrain Gauge, full bridge
Impedance RangeMinimum 150 Ohms
Overall Accuracy0.1% (any portion of the range)
Power Source Required19 to 36 VDC (24 VDC, typical)
Optional: 9 to 18 VDC (12 VDC, typical)
Power Supply to Sensor10 VDC, regulated (±5 VDC referenced to ground)
Calibration Range38 to 580%
Output from TS6210-10 VDC (standard)
Optional OutputsCurrent (option A), 0-20/4-20 mA, user set
Amplified voltage (option X),2X, 3X, 4X, 5X
amplification, user set
Damped voltage (option D) at 4 seconds
Isolation between I/OGalvanic Isolation using integrated DC-DC converter between input power & output signals
Power Consumption100 mA @ 24 VDC
Operating Temperature32 to 140 °F (0 to 60 °C)
Connector TypesScrew Terminals
Dimensions3.1" (H) x 1" (W) x 3.7" (D) (80 x 25 x 95mm)
Weight4 ounces (100 grams)
Mounting StyleDIN-Rail Snap-In Installation (DIN-rail not provided)