Dwyer UTS - Manual (Page 6)

Sensor Positioning
When installing the sensor, ensure that it is:
• Mounted above the dead-zone area (Blind Zone)
(blocking distance).
• Positioned at least 0.5 m (1.64 ft) away from
the tank walls.
• Perpendicular to the surface of the target.
• Install the sensor as far as possible from noisy
areas, such as a filling inlet.
Installing the Sensor via an Extension Pipe
If the level of the measured surface falls within the dead-zone area, you should use
an extension pipe to mount the sensor.
When using an extension pipe, ensure that:
• The sensor is positioned in the center of the
pipe.
• The pipe extension is parallel to the side/tank
walls.
• The tank should be empty to allow tracking of
false echoes.
• The internal pipe diameter is at least 3˝ and 4˝
wide.
When installing the sensor with an extension
pipe, follow these specifications:
Wiring the Series UT Unit
The lower part of the Series UT unit consists of the electrical unit, which contains
the wiring terminals for the sensor cable and the power cable. The electrical unit
also contains optional connectors for monitoring of digital and analog outputs, as
well as five optional relay connectors.
In order to make a wiring connection, remove the ribbed faceplate covering the
electrical unit using a 3 mm allen wrench. Ensure that the cover is replaced
securely after all wiring connections are completed.
To Wire and Install the Series UT:
1. Install the sensor, as described in Installing the Series UT Sensor, page 4.
2. Route the sensor's cable (C1) from the sensor to the main unit location. Choose
a route without electromagnetic interference (electrical engines, pumps or high
voltage.
3. Wire the sensor's cable (C1) to the main unit, as described in Wiring for the
Sensor Cable, below.
4. Make any optional monitoring or relay cable connections to the main unit, as
described in the instruction manual.
5. Connect the power cable to the main unit.
6. If required, mount the main unit on the wall using the optional wall mount plate.
Page 5
NOTES:
If the device enters the dead zone, it
will not measure correctly.
NOTES:
Even the slightest difference in angle
may affect echo quality.
Figure 10:
Extension Pipe Installation
Pipe Length
1.64 ft (0.50 m) Internal Pipe Diameter
3 or 4˝
NOTES:
We advise you to consult with your local distributor prior to the installation. It is
essential to run scan distance function during the installation process. It is
recommended to use pipes made of PVC/plastic and not stainless steel.
NOTES:
Remove the rubber sealing from the gland before wiring the connectors.
Figure 11: Electrial Unit Using Glands/Conduits