SWITCHES, RELAYS & TRANSMITTERS0 pages

SWITCHES, RELAYS & TRANSMITTERS
26 www.orangeresearch.com
Differential Pressure
and Flow Electrical Details
Switches, Relays
and Transmitters
• Order independently
or with dial
• Many safety ratings
Orange Research differential pressure and flow
instruments are available with switches, relays and
transmitters to alert the user of process conditions or
control process equipment at pre-set values. These
electronics are offered independently or in combination
with the dials.
Switches:
We offer hermetically sealed reed switches that come
with or without enclosures, depending on the model.
Choose from SPST, normally open or normally closed,
and SPDT switches. The models with enclosures have
many safety ratings to satisfy a variety of environments
and markets. Select from NEMA-4X to Class 1, Division 1
or 2, or UL, CSA, CE, or ATEX ratings and many more.
For complete safety ratings or certifications refer to our
individual model Specifications Sheets available for
downloading on our website.
Most of our reed switches are field adjustable within the
upper 70 or 80% of the full-scale range of the instrument,
depending on the model. All switches are preset to the
full-scale range unless another value is specified at the
time of order placement.When two switches are used
they can be set independent of each other. Ask about our
High Voltage and High Temperature switches.
Relays:
Our relays are used in high-inductive circuits such as
those incorporating solenoids or motors.We use a reed
switch to actuate the relay at a prescribed value.This
isolates the reed switch, protecting it from high current or
voltage. Some models allow for two relays on one
instrument.
Transmitters:
Our transmitters incorporate a Hall-effect sensor that
transforms the movement of the differential pressure or
flow sensor magnet into an electrical output. As conditions
change the sensor magnet rotates the pointer (rotary)
magnet. This rotation induces a change in output from the
Hall-effect sensor that is proportionate to the differential
pressure reading or flow rate.
Every transmitter is capable of providing current or
voltage output. The user simply selects the output
required. Temperature compensation ensures that the
output of the transmitter does not drift.
Each transmitter can be installed as a two-wire (loop
powered) or as a three- or four-wire connection. Most of
the safety ratings of the switch enclosures also apply to
the transmitters.
Features
1516DS
(relay)
1203PGS
(with 2 SPST switches)
1203PGT
(transmitter)
1201PGS
(with 1 SPST switch)