Important Information
Please note that if the output of the ultrasonic transducers used with
the Ultra Twin are capable of emitting sound pressure levels in excess
of 85dBA (above a reference sound pressure level of 20µPA), then the
Ultra Twin must be located remote from the transducer such that a
sound pressure level of 85dBA is not exceeded when standing at the
Ultra Twin in the operators position.
Care should be taken not to over tighten the screws.
Important Information
When using the Ultra Twin to measure the differential level
between the two points of measurement then transducer one must
be located on the upstream side of the application.
Relay Outputs
The six relays can be programmed for a variety of alarms, pump control, or
other process functions and allocated to either point of measurement. The
relay contacts are all rated at 5A at 115V AC.
Wiring should be completed by using suitable cable, to meet the specified
115V AC 5A contact rating, up to maximum size of 14AWG.
All connections should be such that the short circuit capacity of the circuits
to which they are connected, is limited by fuses rated so that they do not
exceed the relay rating.
Digital Inputs
Where the Ultra Twin is required to provide power for a Device Input the
appropriate Digital Input should be wired between the 24VDC supply
terminal and the IN terminal. (TOTAL maximum current available, for all
digital inputs, four on Wall Mount model and seven on Fascia Mount model,
from the 24VDC supply is 24mA). When Device Inputs are self powered,
connection of the device should be made between the Common terminal and
the IN terminal. (Minimum Input voltage 4.5VDC, Maximum Input voltage
30VDC with a maximum current of 3mA).
Current Output
There are two mA Outputs which are fully assignable, both outputs are an
isolated (floating) mA output, of 4 - 20mA or 0 - 20mA, and the load should
not exceed 500
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