Orange Research 1502 Series Instruction Manual

INSTRUCTIONS
Series 1502,1516,1518,1533,1831,1833,1835
DIFFERENTIAL PRESSURE INSTRUMENTS
Diaphragm Sensor
Your new Orange Research Differential Pressure Instrument is
a rugged instrument featuring simplicity of design to provide
dependable and efficient service. Because it is an instrument
it should be handled with care. Read all instructions carefully
before attempting to install the instrument.
CAUTION
: Do not exceed maximum operating pressure
listed on instrument label. Use only fluids compatible
with wetted parts.
HOW IT WORKS
The instrument operates on the difference between two
pressures (delta-P). The sensing element is a spring biased
diaphragm which moves linearly in proportion to the difference
between two basic pressures. A magnet on the HI pressure
side of the piston assembly moves with the diaphragm and
rotates a follower magnet located adjacent to the pressure
cavity. The gauge pointer is located at the end of the rotary
magnet shaft and rotates with the magnet to provide gauge
readings proportional to differential pressure variations. This is
accomplished by the coupling forces between two adjacent
magnets through a solid wall.
Switch Units: On switch and indicating switch models, reed
switches are located adjacent to the pressure chamber and
are actuated when the diaphragm magnet field interacts at a
present point with the reed switch armature. Reed switch set
points are adjustable.
Transmitter Units: On transmitter models the transmitter
module is located adjacent to the pressure chamber. A Hall
Effect sensor interacts with the movement of the sensor
magnet.
Note:
This instrument will provide ±2% accuracy full scale.
Caution:
For models 1502 & 1533, always apply
pressure to the high side first. Reverse pressure may
damage the diaphragm.
INSTALLATION
Check instrument & identify HI and LO markings. HI identifies
the high pressure port; LO the low pressure port. If instrument
is installed backwards, it will neither operate nor be damaged.
The instrument can be line mounted, bracket mounted or
panel mounted depending upon the model purchased.
GN128-Diaphragm Rev. 0
1516 Series shown – images vary by model
*Mounting Options:
1. Piping support: sometimes the piping supports our
instruments with no additional mounting required
2. Mounting holes: each unit has mounting holes to
support our instrument
Flanged "F-style" mounting case: contains holes around
3.
the outside edge for panel mounting, order as an option
C-clamp: C-shaped clamp for mating "B-style" dial
4.
cases to panel, order as an option
5. Mounting kit: multiple configurations for mating
instrument to flat surfaces or to pipes, order as an
option
* See our website for complete details on mounting our instruments.
Installation Notes:

Do not mount directly to steel surfaces...this could
affect the magnetic sensors...mounting 1 inch from
ferrous metals is recommended

If there is particulate in the line, insert a screen
(approx. 100 micron) to block the particulate from
becoming lodged in the instrument

Do not install on systems for highly viscous fluids or
where fluid may become hardened over time

Do not install on system with iron in the fluid...the iron
can become attached to the magnetic sensors

Install the unit above the process line to prevent
particulate settling in the instrument

We recommend isolating the instrument from the
system pressure using valves...3 or 5 way manifold
valves are common

Open valves connected to our instrument slowly, to
protect the diaphragm sensor from damage

Before installation, refer to our Specification Sheets
(on our website) to identify instrument component
materials & double check for chemical compatibility
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