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Series 1785 Manifold Pressure Test Gauges0 pages
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Product Data
SPECIAL APPLICATION GAUGES
Series 1785 Manifold Pressure
Test Gauges
DESCRIPTION
SPECIFICATIONS
Model 1785 2-1/2" manifold pressure test gauges offer
several ranges for use with various types of refrigerants,
including R-12, R-22, R-502, R-134A and R-410A. The
gauges can be permanently mounted in cooling systems
or used on portable manifolds.
SIZES: 2-1/2"
t Type CR-1780 is supplied with 350 psi retard scale
to accommodate accidental over-pressure. All gauges
feature a one piece polycarbonate ring and window. This
provides quick, easy access to internal front adjusting
screw for resetting the pointer.
t Gauges are available in English, dual scale, or metriconly ranges. Custom sizes and dials are available for
OEM customers.
RANGES: P-1785 – 0-500 psi, 0-800 psi
CR-1785 – 30" Hg VAC, 0-120 psi retarded to 350 psi; 30" Hg
VAC, 0-250 psi retarded to 500 psi
ACCURACY: ±3-2-3% of span (Grade B), applies to non-retard
portion
BOURDON TUBE: Phosphor bronze
WINDOW AND RING: Threaded, polycarbonate
MOVEMENT: Brass, silicone treated; adjustable with
re-calibration screw
DIAL: Steel, white background with black markings; refrigerant
temperature scales in red
POINTER: Aluminum, black finish
CASE: ABS (P-1785 – red; CR-1785 – blue)
CONNECTION: 1/8-27 NPT LM, brass
1.21
(30.7)
INCHES
(MM)
2.84
(72.1)
Model P-1785
0.34
(8.6)
0.56 SQ.
(14.2)
0.55
(14.0)
THREAD
Model CR-1785
0.44
(11.2)
Spec Number Selection Chart
Model Number
Description
Spec No.
CR-1785
30" VAC -0-120/350 psi, R-12, R-22, R502 temperature scale
169128
P-1785
0-500 psi, R-12, R-22, R502 temperature scale
169129
CR-1785
30" VAC-0-120/350 psi, R-134A temperature scale in °F and °C
169130
P-1785
0-500 psi, R-134A temperature scale in °F and °C
169131
CR-1785
30" VAC-0-250/500 psi, R-410A temperature scale in °F and °C
169132
P-1785
0-800 psi, R-410A temperature scale in °F and °C
169133
On-line order fax: +1 215-323-9450 or e-mail: usg.sales@ametek.com
Sales/Technical Support: +1 215-293-4100 | 205 Keith Valley Road | Horsham PA 19044 U.S.A.
© 2013, by AMETEK, Inc. All rights reserved.tt
Printed in the U.S.A.tt
PDF513 (160174)
Specifications are subject to change without notice. Visit our Web site for the most up-to-date information.
www.ametekusg.com
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