Dwyer 1620 - Manual (Page 2)

©Copyright 2010 Dwyer Instruments, Inc. Printed in U.S.A. 2/10 FR# 21-440199-00 Rev. 5
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.
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)
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
ADJUSTING NUT
POWER
DIAPHRAGM
ø7/8 [22.23]
OPENING FOR
1/2˝ CONDUIT
FITTING
8-15/16
[227.01]
7-1/4
[184.15]
1/8 NPT
FEMALE
ш9/32 [ш7.14]
MOUNTING HOLES
8-1/4
[209.55]
4-1/4
[107.95]
POWER
DIAPHRAGM
4-1/4
[107.95]
SNAP SWITCH
ADJUSTING SCREW
ADJUSTING NUT
CALIBRATED RANGE SPRING
SEALING DIAPHRAGM
ø7/8 [22.23]
OPENING FOR
1/2˝ CONDUIT
FITTING
8-15/16
[227.01]
7-1/4
[184.15]
1/8 NPT
FEMALE
ø9/32 [07.14]
MOUNTING
HOLES
8-1/4
[209.55]
ADJUSTING SCREW ADJUSTING NUT
DWYER INSTRUMENTS, INC. Phone: 219/879-8000 www.dwyer-inst.com
P.O. Box 373 • Michigan City, IN 46361-0373, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
E-51:E-52 2/15/10 1:55 PM Page 2