AccUView LED (1/2020)
Rev 2
7
3.2.1 Pressurized Systems:
A standard feature of the AccUView LED is a pressure
regulator. The regulator is rated for use up to 1380 kPa (200 PSI) and will lower the
pressure down to a pressure more suitable for use in the AccUView LED. If inlet
pressures can exceed 325 kPa (47 PSI) use appropriate tubing to connect to the AccUView
LED. An optional flow regulator can be used to limit the flow to 1 liter per minute.
3.2.2 Drain Vent:
The AccUView LED has been fitted with a drain vent in the “OUT”
bulkhead fitting. This fitting allows for atmospheric equalization, thus helping to alleviate
bubble formation in the cuvette. Refer to Figure 4.
Upon initial flow minor leakage may occur through the drain vent. This will subside once
normal flow is established.
For some high pressure systems, where the vent hole continuously leaks, a 6:32 seal screw
is provided which should be inserted into the vent hole and tightened.
The drain water from this instrument should NEVER be reintroduced back into the
incoming water stream. This water MUST be directed to a convenient drain.
3.3 Electrical Connections
All of the electrical connections to the instrument are made through the field terminal box,
which should be located directly under the sensor portion of the instrument. The
connections are labeled within the terminal box and are self-descriptive (see Figure 5).
Please follow all local and government recommendations and methods for installation of
electrical connections to and between the instrument and other peripheral devices.
Plugs are inserted into the alarm and 4-20mA/RS-485 cable bulkheads when shipped, to
ensure a watertight seal. These plugs should be removed and discarded when cabling to
either of these connections.
The power cable bulkhead will accept cable diameters from 5.8mm (.230 in.) up to 10 mm
(.395 in.). All terminals are designed to accept wires in the range of 14-28 AWG. All
wires should be stripped to a length of 6 mm (¼”). A strain relief strap is provided to
reduce tension on the power terminals.
It is the user’s responsibility to assure that the watertight seal is maintained after the
terminal box has been wired for operation. If any of the bulkheads are not tightened
properly around a cable or plug, the ratings of the instrument will be jeopardized and there
is a possibility of creating a shock hazard.
Only qualified electricians should be allowed to perform the installation of the
instrument as it involves a line voltage that could endanger life.
