Digital radio telemetry system for strain gage applications on rotating shafts - Gain and auto zero setting directly from the receiver side!
The MT1-PCM single-channel telemetry system offers the easiest handling for the wireless radio transmission of strain gage signals from rotating shafts.
THe dimensionof the encoder (MT1-PCM-STG) are 62 x 27 x 11mm, those of the transmitter (40k-Tx) are 62 x 27 x 11mm (each without connectors). Each module has a weight of about 30g. The encoder/transmitter parts are simply mounted on the rotating shaft with a special fiber reinforced tape and fixed by a steel clamp. Powering of the transmission part is by battery (6-9V), power cnsumption 90mA. The digital data transfer between transmitter and receiver uses radio frequency bands of 433MHz or 868MHz, transmitting power is 10mW.
Easy to assemble and operate
Strain gage sensors (>350 Ohm)
Full and half bridge configuration
Fixed excitation: 4 Volt DC
Auto-zero adjustment - setting on receiver side
Gain: 250 to 8000 - setting on receiver side
Powering by LIthium battery, > 12h operational time
Distance 1 to 10 meter (rotating application)
Up to 8 systems can work in parallel with different radio freq.
Signal bandwidth 0....500 Hz (-3dB)
Output +/- 10V
System accuracy < 0.2 %