Description
ATF326 Reaction Torque Sensor
Key features
- Measurement range 0 – 20 Nm
- Non-linearity 0.1 % RT
- Output signal 2.1 mV/V or
rationalized 2.0 mV/V ±0.5 % - Supply voltage 10 VDC, max. 20 VDC
- -10 – +80 °C Operating temperature
- Hysteresis: ±0.4 % RT
About the ATF326 Reaction Torque Sensor
The ATF326 fits between a motor and its mounting structure acting as a low profile coupling or adapter plate. The motor shaft passes through the center of the ATF326, the resultant torque reaction on the motor stator is equal and opposite to the shaft torque. Torque is transmitted from the motor stator through the ATF326 transducer to the earth structure or chassis.
This makes the ATF326 suitable for many process applications, examples are:
- Bulk powder handling – mass flow measurement
- Rheology – liquid viscosity measurement
- Mechanical handling – conveyor belt drive torque
ATF326 transducers can be designed for most motor drive applications where the motor itself is static.
Technical Specifications
| Specification | Value |
|---|---|
| Bridge resistance | 700 Ohm |
| Compensated temperature range | -10 – +50 °C |
| Creep, 20 min | ±0.1 % AT |
| Environmental sealing | Dust proof |
| Hysteresis | ±0.4 % RT |
| Insulation resistance, minimum at 50 vdc | 500 MOhm |
| Material | Aluminium |
| Non-linearity, terminal | ±0.1 % RT |
| Operating temperature range | -10 – +80 °C |
| Rated output, nominal | 2.1 mV/V |
| Rated output, rationalised | 2 mV/V ±0.5 % RT |
| Rated torque | 20 Nm |
| Repeatability | ±0.05 % RT |
| Structural stiffness | Range dependant |
| Supply voltage, max. | 20 V |
| Supply voltage, recommended | 10 V |
| Temperature effect on rated output | ±0.005 % AT/K |
| Temperature effect on zero load output | ±0.005 % RT/K |
| Weight (excl. cable) | approx. 8.5 kg |
| Zero load output | ±4 % RT |
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