Hand-held radio transceiver displays outputs from remote strain strain gauge based sensors such as load cells, pressure transducers, and displacement sensors
The TDM, now available from Celsum Technologies, is a completely portable, battery-powered radio transceiver and display for strain gauge based sensors such as load cells, pressure transducers, strain, torque and displacement sensors which are fitted with one of Celsum's compatible strain gauge conditioning amplifiers-cum-radio transceivers.
Two separate ranges are selectable, which enables the TDM to read and display two values, and the TDM will allow signals to be selected from up to 20 remote instruments.
Sealed in a robust ABS housing to IP65/Nema 4, the TDM requires only six tactile keys for operation.
Gross or nett, peak and trough functions may be selected.
Remote devices may be zeroed and tared, and the incoming signal digitally filtered if so desired.
A remote shunt calibration facility is provided, as is a remote battery check. Data is encrypted for complete security, the range is 200-300 metres and the unit is available with two frequencies for use in the EU or the USA and Canada.
Weighing only 250 grammes, the TDM has a 71/2 digit LCD display 8.8mm high, together with eight status ennunciators for the range selected, local and remote low battery warning, error, peak, trough and net.
The instrument has two programmable ranges, which are operator selectable, and is very simple to operate once configured.
Using a pair of alkaline batteries, the TDM will operate with a 350 ohm strain gauge continuously for 35 hours, or up to 5000 hours in low power mode. Celsum's Technologies's managing director Roy Carter said: "The TDM is a robust and compact unit which complements our range of radio telemetry, digital and analogue strain gauge conditioning amplifiers and process control instruments.
"They are ideal for laboratory use, R and D, field work, and on processing plant and OEM equipment."
