RS Aqua Ltd. 46 Hurst Barns, Privett, Alton, Hampshire, GU34 3PL
Tel: +44(0)1730 828222 Fax: +44(0)1730 828128 Email: [email protected] Web: www.rsaqua.co.uk
A. Specification – Description – Capabilities.
A1. What are the differences between WaveRadar Rex M and D?
A: The only difference is the power supply requirement. Version M is for AC mains between
100 to 230 V. Version D requires a 24 VDC source.
A2. Does WaveRadar Rex have an analogue output?
A: Yes. A 4 20mA output is provided as standard.
A3. Can we connect our data logger directly to the analogue output?
A: Yes.
A4. Why is the analogue output shown as being EEx“e” (non intrinsically safe)?
A:
There are two, separated chambers in the junction box. These each contain a
connector block. The lefthand chamber/block (X12) is intrinsically safe rated but is used only
for the Remote Display Unit (RDU40) or Tank Radar operations. WaveRadar Rex uses the
right hand chamber/block (X11). The outputs for the data bus and the analogue signal, along
with the power supply input, are all terminated onto the X11 connector block. This chamber is
EEx e rated, which conforms to the requirements of the BASEEFA03ATEX (and equivalent)
hazardous zone rating.
A5. Clarify the digital output from WaveRadar Rex.
A: It comprises fixed length strings of binary values of measured distance plus radar
operating status information. The serial message is frequency shift keyed (FSK) and
transmitted from the sensor via a two wire serial data field bus. From the integral junction
box, cabling (available from RS Aqua as an optional extra) will run to the FBM, located in
some form of “control” location. The FBM will convert the FSK message to RS232. A two
metre RS232 cable is supplied to connect the FBM to a PC. The output from the FBM is
4800 Baud, 8 bits, No parity, one stop bit.
A6. Do we need a RS232/RS422 converter to transmit data over long distances?
A: No. The installed field bus system is good for distances up to 4Km.
A7. Is the Field Bus Modem powered by the WaveRadar?
A: No. The FBM is powered by an external DC (6 – 12 Volts). A mains to DC adapter is supplied
with the FBM.
A8. I want to integrate WaveRadar to a metocean monitoring system. Can I do that?
A: Yes. The FBM RS232 output is easily integrated. In addition, WaveView software
outputs a time stamped ASCII serial data stream of processed parameters and raw distance
measurement for your monitoring system.
