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New for 2020 is the TorqSense Digital rotary strain gauge series (SGR) Transducers use non-contact technology eliminating the need for noisy slip rings.
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The SGR510/520 series torque sensors are suitable for torque measuring, testing, feedback control of drive mechanisms and process control applications.

The SGR series transducers use modern strain gauge signal conditioning techniques to provide a high bandwidth low-cost torque measuring solution with high over range and overload capabilities.

Key Benefits – SGR510/520 Torque Sensors:

  • Transducers from 1Nm to 13000Nm
  • Large fully functional over range capability of 250% (SGR520)
  • Minimal side and end load errors
  • Low linearity deviation of ± 0.05% FSD
  • Low hysteresis error of ± 0.05% FSD
  • Zero variation in torque signal with rotation (cyclic variation)
  • Non-contact signal transmission, no-slip rings to wear out
  • High digital sample rate of 4000 samples per second
  • Adjustable torque data smoothness, low pass filter (SGR520)
  • Speed measurement / Power computation
  • Wide power supply range 12-32 VDC
  • Compatible with the ethernet gateway module
  • Lifetime Warranty

TorqSense SGR510 Series transducers offer:

  • A fixed voltage or current analogue outputs (one for torque and the other for speed or power) for interfacing with analogue instrumentation
  • BIT Self-diagnostics for letting the manufacturer know that the transducers torque, speed ratings and calibration due date have not been exceeded
  • Simple ‘Sensor status’ output pin
  • Sensors to monitor shaft temperature for better compensation and accuracy

Whereas, TorqSense SGR520 Series transducers offer:

  • Digital outputs such as RS232, CANbus and USB for interfacing with modern instrumentation and laptops
  • Digital input for configuring transducer via PC
  • 2 x user selectable voltage or current analogue outputs (one for torque and the other for speed, power or peak torque) for interfacing with analogue instrumentation
  • Transducer configuration software to allow users to change transducer variables
  • BIT Self-diagnostics for letting users know data is trustworthy, that the transducers torque, speed ratings and calibrated due date have not been exceeded
  • Simple ‘Sensor status’ output pin
  • Sensors to monitor shaft temperature for better compensation and accuracy
  • Ability to connect up to 10 transducers using USB
  • The optional external ethernet gateway module

 

SGR510/520 Series Torque Transducers - Data Specification
Parameter Condition Data Units
SGR510/520 Torque measurement system
Measurement method Full bridge strain gauge
Torque range (See Notes 1
& 2 below)		 0 – 1 0 – 1.1
to 0 - 20		 0 – 21
to 0 - 100		 0 – 101
to 0 - 500		 0 - 501
to 0 - 2000		 0 – 2001
to 0 - 13000		 Nm
[0 - 10] [0 – 11
to 0 - 200]		 [0 – 201
to 0 - 1000]		 [0 – 1001
to 0 - 5000]		 [0 – 5001
to 0 - 20000]		 [0 – 20001
to 0 - 175000]		 [lbf.in]
Shaft size (diameter)   6 12 20 30 50 75 mm
Specifications
Combined non-linearity and hysteresis   ±0.1 %FS
Resolution   0.01 %FS
Repeatability   0.05 %FS
SGR510 Series Transducers ONLY
Accuracy 200C, SM
(See Note 4)		 ±0.2 %FS
3dB Bandwidth (See Notes 5&6) 250 (default ave. = 16) Hz
Analog output
Output voltages (Torque/Speed/Power)   Options available: ±1 / ±5 / ±10 / Unipolar (SGR510 Series default setting is ±5Vdc) (SGR520 Series output voltages are user selectable) Vdc
Load impedance   Maximum 1 KΩ
Output currents (Torque/Speed/Power)   Options available: 4-20 / 0-20 / 12±8 (SGR520 Series output currents are user selectable) mA
4-20mA Loop resistance   Should not exceed 400 Ω
SGR520 Series Transducers ONLY
Accuracy 200C, SM
(See Note 4)		 ±0.1 %FS
Digital averaging (See Note 5) 2 4 8 16 32 64 128 256 N
Noise Floor 200C, SM
(See Note 4)		 0.06 0.04 0.03 0.02 0.015 0.01 0.01 0.01 %FS
3dB Bandwidth (See Note 6) 2000 1000 500 250 125 62 31 15 Hz
Digital output (SGR520 Series Transducers ONLY)
Connections   CAN Bus RS232 USB  
Configuration   CAN 2.0B, 11bit
Message Identifiers		 Data Bits: 8, Parity: None, Stop Bits:1 USB 2.0 Full-Speed  
Baud Rate(s)   1 Mbps, 500 Kbps,
250 Kbps, 100 Kbps		 115200 bps, 38400 bps,
9600 bps		 12 Mbps  
Output Rate (Note 7)   Up to 10 KHz Up to 1.1 KHz Single Transfer Up to 500 Hz  
Bulk Transfer Up to 10 KHz
Rotation speed/angle of rotation measurement system
Measurement method   Opto switch through slotted disc  
Direct output signal   Pulse output direct from opto switch (TTL, 5V square wave)  
Accuracy   ±1rpm up to 30,000rpm  
Rotational speed (max) (See Note 3) 30,000 20,000 15,000 12,000 9,000 6,000 RPM
Digital Processing Techniques Processing modes run
simultaneously and can be applied to either analog channel or accessed individually via a digital
connection.		   Processing Method Update rate for analogue and digital outputs  
  Mode 1
(Slow Method)Frequency Count		 1 Hz
  Mode 2 (Fast Method)Period Count 0 RPM 1 Hz
< 2000 RPM RPM
> 2000 RPM RPM x ( 1 / ( ë (RPM - 1) / 2000 û + 1 ) )
Temperature
Measurement method   Shaft mounted platinum temperature sensor  
Temperature accuracy   ±1 0C
Reference temperature TRT   20 0C
Operating range, ΔTO   -10 to +50 0C
Storage range, ΔTS   -20 to +70 0C
Temperature   Coefficient of zero 0.002 %
Temperature   Coefficient of span 0.01 %
Power supply
Nominal voltage, VS   12 to 32 (max) V
Current consumption, IS   250 (max) @ 12 VDC mA
Power consumption, WS   3 W
Allowed residual ripple of
supply voltage, Vripple		   500
(above nominal supply voltage)		 mVp-p
Electromagnetic compatibility
EMC compatibility   EN 61326:2006