EA Technology UltraTEV Monitor, Operating Manual

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EA Technology UltraTEV Monitor
TM
Operating Manual 2178L014
25
4.2 Node Sensors
4.2.1 External TEV Probe/Aerial
The external TEV probe or antennas are tried and tested
designs, originally developed for the PD Monitor. They attach
to the switchgear using either a magnetic base or an optional
cable tie base. TEV probes are used where additional
switchgear measurement points are required whilst aerials are
used for detecting external interference. The probe or aerial is
connected to the Node using standard BNC terminated 50
Ω
coaxial cable.
For both sensor types, the length of the coaxial cable must be
entered into the Hub Unit during the system discovery stage of
system installation. All cables supplied with the instrument are
marked with their individual lengths to aid this.
A single TEV probe or antenna may be connected to each Node.
4.2.2 Ultrasonic Sensors
The Ultrasonic Sensor is housed in a plastic case similar in size
to a key fob with the sensor at one end. There are a number
of different mounting options as follows: clamp, clamp with
goose neck or simply using double sided sticking pads. The
clamp can either be attached using the built in magnets on
ferrous material or by using tie wraps with the slots provided.
The lead from the back of the sensor connects to the Node.
Plug in extension leads are available should they be required.