Dwyer HP User Manual

Bulletin A-27-HP-MP

Magnehelic®Differential Pressure Gage
High and Medium Pressure

Specifications — Installation and Operating Instructions

SPECIFICATIONS

HP MODEL

For maximum internal pressures to 80 psig on one or both sides
of diaphragm in all standard Magnehelic
cast acrylic machined to finish dimensions.

MP MODEL

For maximum internal pressures to 35 psig on one or both sides
of diaphragm in all standard Magnehelic
molded polycarbonate.

BOTH MODELS

Accuracy: Plus or minus 2 percent of full scale, at 70 degrees
fahrenheit.
Ambient Temperature Range: 20 degrees to 140 degrees
fahrenheit.
Leak check, no bubbles while immersed in water, for 1 minute
using air at rated maximum internal pressure.
Bezel, die cast aluminum.
Case, impregnated die cast aluminum.

®

ranges. Cover is clear

®

ranges. Cover is clear

Mounting: Same as standard model gage, except for size of hole
in panel for flush mounting. See Bulletin A-27. Will not fit into
portable carrying case.
Connections: 1/8˝ NPT high and low pressure taps, duplicated,
one pair side and one pair back.
Accessories: Mounting ring, bezel snap ring, (2) 1/8˝ N.P.T. pipe
plugs, (2) l/8˝ NPT x 1/4˝ compression fittings, (4) 6-32 x 2˝ RH
machine screws.
Weight: 2 Ibs. 4 oz.

CAUTION: For use with air or compatible gases only. For
repetitive over-ranging or high cycle rates, refer to factory.

©Copyright 2010 Dwyer Instruments, Inc. Printed in U.S.A. 7/10 FR# 12-440212-01 Rev.11

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