RFm Torque Transducers

RFm Torque Transducers Product Overview The RFm from Crane allows wireless connectivity to the CheckStar Multi and the IQVu to remove the need for hazardous cables when transferring your torque measurement readings. Simple, safe, accurate and effective. Even if you are out of range the RFm will still continue to […]

RFm Torque Transducers

Product Overview

The RFm from Crane allows wireless connectivity to the CheckStar Multi and the IQVu to remove the need for hazardous cables when transferring your torque measurement readings. Simple, safe, accurate and effective. Even if you are out of range the RFm will still continue to take your readings, once back in range it will automatically connect to the IQVu and your data will be transferred. No need to lose important information.

The RFm allows the CheckStar Multi to become wireless when used in conjunction with an IQVu. Previously, a CheckStar Multi would need to connect to an IQVu or TorqueStar unit via a cable. This addition to the IQVu family allows the CheckStar Multi to be situated in areas where long lengths of cable would become a hazard or impractical.

The RFm reads the Torque and Angle values in real time and converts them to digital values. The unit analyses the digital samples using measurement algorithms to calculate properties of the fastening, such as Peak or Click. It also communicates the final fastening readings to an IQVu using RF, giving a range of approximately 10m.

It is extremely easy to pair with our IQVu data collector. If for some reason the RFm loses its link to the IQVu, it continues to work offline storing up to 200 readings, which are then updated as soon as the connection is restored.

RFm

Physical Measurement

Bi-directional torque and angle*, and pulse count.
*Angle measurement is only available when using a CheckStar Multi with angle encoder.

Measurement modes:

Peak Capture of highest torque value during the cycle.
Click Capture of click point torque during click mechanism operation.
Pulse Special measurement algorithm for use with impulse tool, incorporating
pulse count.

Plug & Play:

The following information is read from the memory incorporated in the CheckStar Multi: Torque Range (span), Angle Encoder PPR, Transducer Serial Number, Calibration due date and Torque @2mV/V..

Types of Transducer:

The RFm only connects with CheckStar Multi.

Reading Storage:

The RFm can store up to 200 readings in offline mode.

LEDs:

The RFm has a:
Charge LED used when charging battery internally.
Status LED.
Note:the RFm also controls the CheckStar Multi light ring during fastening operations.

Torque Measurement:

Resolution to 0.006% of transducer span. Sampled every 20 micro-seconds (50,000) per second..

Zero Stability:

< 0.1% FSD / °C.

Static Accuracy:

/-0.2% FSD of connected transducer.

Angle Measurement:

Sample every 1000 micro-seconds (1,000) per second.
Automatically adapts to PPR of angle transducer using quadrature phase measurement.

Frequency Response:

A low pass Bessel Filter is employed for conditioning the transducer signal to
‘eliminate noise’ from the tool measurement.
User selectable from 75Hz to 4608Hz.

Readings

Readings are organised into subgroups.

Batteries

Re-chargeable Lithium Ion battery.
Capacity 600mAh.
3.7V.
Weight 16g.
Useable battery life of 6 hours with normal usage.

Carrying

Portable.
Weight 142g.

Dimensions

30mm (W) x (mean) 91.7mm (L) x 56mm (H) – with military connector.
30mm (W) x 63mm (L) x 56mm (H) – without military connector.

Ports

19 pin military connector for connection to a CheckStar Multi.
USB for diagnostics and battery charging.

Communication

Communicates with an IQVu using 2.400GHz RF.

Warranty

TBC

Dimensions

30mm (W) x (mean) 91.7mm (L) x 56mm (H) – with military connector.
30mm (W) x 63mm (L) x 56mm (H) – without military connector.

Torque Measurement:

Resolution to 0.006% of transducer span. Sampled every 20 micro-seconds (50,000) per second..