Ref: REFLEX/SCANFLEX MANUAL
EDITION 1: JULY ’97 11
Transducer Installation
The positioning of the transducer and the mounting method used is important and varies with
the type of transducer, the application and the material, being monitored.
On liquid measurement applications it is important to ensure that the transducer is
perpendicular to the liquid surface and the circumstances shown on Page 49 should be avoided.
The transducer beam angle is 10 to 12
0
included.
Transducers should be mounted in the isolation kits provided and for solids applications where
levels may not be flat due to the effects of fill or draw off points, then an aiming kit as shown
on Pages 53 or 54 should be used.
Transducers wired to the Multiplexor (SM-10) must to be connected to Point 1 first then
sequentially and without gaps. See Page 60 for terminal connections.
Each transducer is supplied with a length of integral cable, which can be extended up to 300
metres using a suitable junction box, and RG62A/U co-axial cable. The 300m is the maximum
distance from the Controller to the transducer via the Multiplexor. Transducer cable should
be separated from power cables and preferably installed in its own earthed steel conduit.
Transducer cables and temperature compensation cables can be run together.
For installation of the RXV15 series transducer in hazardous locations refer to the appropriate
National Standard.
SEE APPENDIX (1) FOR TRANSDUCER PERFORMANCE, POSITIONING AND
PHYSICAL RECOMMENDATIONS FOR STANDPIPE INSTALLATIONS.
Temperature Sensor See Page 55
If temperature compensation is required the sensor should be mounted where it will monitor
temperature changes of the air between the transducer and the material. This is usually
adjacent to the transducer, but should not be in direct sunlight.
The sensor is connected to the Multiplexor at TB2 using a 2 core screened cable connected to -
ve, +ve and SHLD for each point. The Multiplexor terminal TB3 connections SHLD, + and -,
are connected to Controller terminals 21 to 23 using the same type of cable. The total cable run
from sensor to Controller via the Multiplexor should not exceed 300m. The cable can be run
together with the transducer cable in the same conduit.
For installation of sensor type RTS-2B in hazardous locations refer to the appropriate
National Standard.
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