The wireless analogue/digital link Tube Mount NEMA 4x Transmitter DIN-Rail/Receiver set is available from Measurement Solutions . It has the following features:
- Wireless conduit for one 4 to 20 mA and two digital signals
- Weatherproof NEMA 4x (equivalent to IP65) housing
- Range: 4 to 5 miles line-of-sight with Omni antenna
- Easy-to-use, wire-in/wire-out, no set-up or programming
- Frequency hopping spread spectrum technology
- License free 902 to 928MHz ISM band
- 1W transmit power
- Mounts on 1/2” NPT conduit
The Ametek Drexelbrook 2867021-DRX/2867034-DRX is an integrated radio and I/O module designed to eliminate cable and conduit for one 4 to 20mA current loop and two digital signals in harsh industrial environments.
Ametek Drexelbrook signal conditioning line utilises 902 to 928 MHz ISM band spread spectrum frequency hopping technology to ensure a license free, interference free link between remote devices and the control room. Costly cable and conduit runs on new projects, or retrofitting of existing systems, are eliminated and replaced with a maintenance free wireless solution.
Common applications include monitoring control of pressure, level, temperature, flow, switching and alarms in situations where cable and conduit are either impossible or costly to install. For example: retrieving pressure readings from a device on the other side of a railway track.
The modules are available as a transmitter/receiver pair and come factory programmed, calibrated and tested as a set. Further switch configuration and programming are not required. Each set is given a unique address at the factory enabling multiple radio systems to work independently in the same area without interference.
The weatherproof transmitters are available in both AC and DC power versions, the receiver in DC only, suitable for DIN-rail mounting. Voltage requirement for the AC transmitter is 100 to 240 VAC. The DC powered modules require a 12 to 30 VDC power source (power supply, battery and solar).
Process signals are quick and easy to install and are wired to the colour-coded wires of the transmitter and output through wires connected to the receiver. No wiring is required in between. Typical outdoor range is 1 to 2 miles with no line-of- sight, 4 to 5 miles with line-of-sight, and 20+ miles with antenna propagation study and installation.The transmitters mount directly to 1/2” NPT conduit and are rated NEMA 4x (IP65) and measure 279 mm x 57 mm or 11” x 2.3” including Omni antenna. The space-efficient DIN-rail mounted receiver takes up only 102 mm (length) x 114.5 mm (height) x 17.5 mm (width) or 4” x 4.5” x 0.7” in the control cabinet.