SERIES 1620 – DIMENSIONS
OPTIONAL ENCLOSURES
Weatherproof Housing
Note:
Pressure and electrical connections must face down when mounted.
Explosion-proof Housing
Class I, Groups C & D; Class II, Groups E, F & G; Class III
Warning: To reduce the risk of ignition of the hazardous atmosphere, conduit seals must be installed within 18˝ of this enclosure.
Disconnect enclosure from supply circuit before opening. Keep assembly tight during operation.
©Copyright 2015 Dwyer Instruments, Inc.
Printed in U.S.A. 10/15
FR# 440199-00 Rev. 6
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219/879-8000
Fax: 219/872-9057
www.dwyer-inst.com
e-mail: [email protected]
2-21/64
(59.13)
1/8 FEMALE NPT
LOW PRESSURE
CONNECTION
1/8 FEMALE NPT
HIGH PRESSURE
CONNECTION
1/2 FEMALE NPT
ELECTRICAL CONNECTION
3-5/64 (78.18)
4-57/64
(124.22)
1-1/4
(31.75)
1-5/16
(33.34)
1/2 (12.70)
CLEARANCE
FOR COVER
REMOVAL
9-9/16 (242.89)
10-1/2 (266.70)
11-5/8 (295.28)
8-13/16
(223.82)
7
(177.80)
TYP
SEALING DIAPHRAGM
CALIBRATED RANGE SPRING
ADJUSTING NUT
SNAP SWITCH
POWER DIAPHRAGM
SEALING DIAPHRAGM
CALIBRATED RANGE SPRING
ADJUSTING NUT
SNAP SWITCH
POWER DIAPHRAGM
ADJUSTING SCREW
ADJUSTING NUT
1/8 NPT FEMALE
1/8 NPT FEMALE
ADJUSTING NUT
ADJUSTING SCREW
SHOWN WITH: ONE SINGLE POLE DOUBLE THROW SWITCHES
SHOWN WITH: TWO SINGLE POLE DOUBLE THROW SWITCHES
3-1/2
(88.90)
5-1/2
(139.70)
BREATHER
13-5/8
(346.08)
12-1/8
(307.98)
11
(279.40)
10-3/4 (273.05)
12 (304.80)
Ø7/16 (11.11) MOUNTING
HOLE TYP 4 PLACES
1/8 FEMALE NPT
HIGH PRESSURE
CONNECTION
DRAIN
1/8 FEMALE NPT
LOW PRESSURE
CONNECTION
1-3/4 (44.45)
CLEARANCE FOR
COVER REMOVAL
8-1/4
(209.55)
3-1/2
(88.90)
3/4
(19.05)
3/4 FEMALE NPT
ELECTRICAL
CONNECTION
6
(152.40)
2-1/8
(53.98)
