Forsentek Co., Limited
Forsentek Co., Limited
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Low Profile Hollow Type Reaction Torque Sensor Flange-to-flange mounting
Low height Hollow Torque Transducer FTHC is made of stainless steel based on strain gauge technology to deliver maximum 0.3% non-linearity of the rated output,model FTHC offers 5NM / 10NM / 20NM / 30NM / 40NM measuring ranges to choose from.Low profile design,through hole structure,flange to flange mounting,working with servo or stepper motor, Low profile torque sensor FTHC can help make robot joint motion control more smoother. Besides the standard specifications, custom made service according to client's specific requrements is also available at Forsentek.
Specifications
| Rated capacity | 5N*m / 44 lb*in / 50kg*cm 10N-m / 88 in-lb / 100 kg*cm 20Nm / 177lbf*in / 200kgf-cm 30N*m / 265 lb-in / 300 kgf*cm 40N-m / 354lb*in / 400 kg*cm |
| Rated output | 1.0 mV/V |
| Excitation | 3-12V |
| Zero balance | ±3% F.S. |
| Non-linearity | ±0.3% F.S. |
| Hysteresis | ±0.3% F.S. |
| Non-repeatability | ±0.1% F.S. |
| Creep(10min) | ±0.1% F.S. |
| Safe overload | 150% F.S. |
| Ultimate overload | 200% F.S. |
| Compensated temp. | -10...+40oC |
| Operating temp. | -20...+60oC |
| Temp. shift zero | ±0.02% F.S./oC |
| Temp. shift span | ±0.02% F.S./oC |
| Input resistance | 700±100 ohms |
| Output resistance | 700±100 ohms |
| Insulation resistance | >2000M ohms |
| Ingress protection | IP50 |
| Material of element | Stainless steel |
| Cable | Ø3.2*3000mm 4-core shielded cable |
| Wiring code | Red--Excitation+ Black--Excitation- Green--Signal+ White--Signal- |
A Reaction Torque Sensor is a transducer that converts mechanical torque into mV signal proportional to the applied torque.The acting torsion causes deformation of the measuring element,the bonded strain gage deforms accordingly which will cause the resistance change of the wheatstone bridge,under constant power supply, the output signal between Sig+ and Sig- will change proportionally,thus the moment can be measured by measuring the output signal from the transducer.
Torque sensor output: = (Power supply * Rated output) * Load / Capacity
Rated output is normally within 1mV/V~3mV/V.
Power supply is normally within 3-15V.
Load / Capacity is within 0-1.
So the output range of torque meter is normally within -45mV...+45mV.
Example one: Torque cell FTHC-20NM with 1.0mV/V rated output powered by 5V DC, the output range is -5mV...+5mV.
Example two: Torque cell FTHC-30NM with 1.0mV/V rated output powered by 10V DC, the output range is -10mV...+10mV.
Torque transducer + Signal amplifier:
The function of signal amplifier is to convert mV signal into 0-5V/0-10V/4-20mA for easy signal processing.
Example: FTHC-40NM working with -10-10V amplifier,the torque-output relationship will be 0-40Nm torque in clockwise direction VS 0-10V output,0-40Nm torque in CCW direction VS 0-(-10V) output,when you get 5V output, it means the current load is 20Nm torque in CW direction, when you get -10V output, it means the current load is 40Nm torque in CCW direction,and so on.
Low Profile Hollow Style Reaction Torque Transducer 5NM 10NM 20NM 30N 40NM