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MEASUREMENT SYSTEMS

BARTON

®

Cameron's Barton Differential Pressure Indicators - 25235 Differential Pressure Indicators

Models 200A

Barton
® indicators are available for a variety of safe workingpressures and differential pressure ranges. They are widelyused for the measurement of differential pressure, flowrate,and liquid level applications.

Features

•Barton
® DPU Sensor•NEMA-4/IP65 cases •Wide Selection of DP Ranges (including absolute, zero-center, and split ranges)•Pulsation Dampening

Actuating Units

•The indicator is actuated by a rupture-proof bellows differentialpressure unit (DPU) with integral temperature compensation. •The M199 DPU features dual, liquid-filled, bellows designed to withstand repeated overranges equal to the safe working pressure of the housings without a change in calibration.
Model 199 Dual Bellows

Indicating Mechanism

•The indicating pointer traverses a 270 degree arc, providing excellent readability. It is driven by a precision- jeweled rotary movement that multiplies rotation of the torque tube through a gear and pinion to the pointer. The movement employs a thermally stable Ni-Span-C hair spring.•The movement has a micrometer screw for convenient range adjustments. Zero/range adjustments can be made without removing the scale plate or pointer. Linearity adjustments are readily accessible after removal of the scale plate.

Scales

•All indicating scales can be graduated uniformly for measurement of differential pressure or liquid level, or square root for direct reading of flow rate. Special scales can be furnished for indicating liquid level in horizontal or non-uniform tanks. Scales are available in black with white lettering (standard) and in white with black lettering (optional, as shown).

Cases

•Barton
® indicators are available in 6-in. (152 mm) dial size. The standard case is die-cast aluminum with a special baked epoxy black finish, which is NEMA-4/IP65 rated. Optional “S” version 316 stainless steel case is available for offshore/corrosive environments.