Series 460 multi-channel telemetry system 1 to 8 channels

Digital telemetry system for one to eight full strain gage bridges or thermocouples, sampled simultaneously at 16 bits, with ±10 V analog outputs or Ethernet data to a PC.

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Series 460 datasheet (PDF) All resources

1 to 8: Channels
16 bit: Resolution
Simultaneous: Sampling
DC to 1 000 Hz: Data bandwidth

InputsStrain gage bridge or thermocouple
Digital outputEthernet to a PC
Power supplyBattery or induction
Transmitter size59 × 33 × 7.6 mm

Up to eight channels, 16 bits, analog or Ethernet

The Series M460 is a digital telemetry system for one to eight full strain gage bridges or thermocouples. The transmitter samples all channels simultaneously at 140 000 samples per second, through fully differential amplifiers, an image rejection filter and a digital anti-aliasing filter, and converts at 16 bits; data bandwidth is DC to 1 000 Hz. Each strain gage driver has 3.0 V excitation and its own gain and shunt resistor. Enclosed, the transmitter measures 59 × 33 × 7.6 mm and weighs 34 g; it runs from −40 to 125 °C on 6 to 9 V DC.

It is powered by a battery or by induction. Data goes out on a 2.4 GHz FSK link with 16 RF channels and a total delay of 17 ms. The receiver, 180 × 89 × 38 mm (64 mm high with induction), runs on 9 to 36 V DC and takes two antennas, with RF diversity and error checking. It gives ±10 V outputs on a rear connector, with 100 Hz or 1 kHz filters, or digital data over Ethernet to a PC. LEDs and status outputs report transmission quality, low power and shunt status.

It is designed for measurements on rotating equipment and wherever a wired sensor cannot reach. The M460 transmitter is also the one housed in the T8 end-of-shaft telemetry.

Specifications

Channels	1 to 8
Input	Strain gage bridge · Thermocouple (full bridge)
Output	Analog voltage · Ethernet
Output range	−10 to 10 V
Bandwidth	1 kHz (receiver filter 100 Hz or 1 kHz (−3 dB, 2-pole Bessel); image rejection filter 3-pole Bessel, 2 kHz; FIR anti-aliasing 1.076 kHz (−3 dB), 1.201 kHz (−100 dB))
Sample rate	2.2 kHz (receiver DAC updates; ADC 140 kS/s)
Resolution	16 bit (no missing codes)
Latency	≤ 17 ms
Gain setting	Customer specified
Output current	35 mA
Simultaneous sampling	Yes
Analog output resolution	16 bit
RF band	2.4 GHz (FSK modulation; medium to short range)
RF channels	16
Supply voltage	9 to 36 V (receiver; transmitter 6 to 9 V DC, 65 mA)
Power source	Battery · Induction
Excitation voltage	3 V
Supply current	500 mA (receiver)
Dimensions	59 × 33 × 7.6 mm (transmitter, enclosed; PCB only 51 × 25 × 5.0 mm)
Weight	34 g (transmitter, enclosed; PCB only 9.8 g)
Dimensions, stationary electronics	180 × 89 × 38 mm (receiver; 64 mm high with induction)
Operating temperature	−40 to 125 °C
Protection	Environmentally sealed (rugged)
Operating temperature, stationary electronics	−40 to 70 °C
Connector	Reverse-polarity SMA (2 antenna connectors)