Mid-West Delta Meter 142, Installation And Operating Instructions

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Part Numbering System
1
BASIC MODEL NUMBER
2
BODY MATERIAL
A. Aluminum (3000 PSIG)
B. Brass (1500 PSIG)
S. 316 / 316L S.S. (3000 PSIG)
3
DIAL SIZE
A. 2-1/2" Round Uni-Directional Dial
C. 4-1/2” Round Uni-Directional Dial
E. 3 1/2” Round Uni-Directional Anod. Alum. Hous. Assy.
G. 4-1/2” Round Uni-Directional Anod. Alum. Hous. Assy.
T. Non-indicating Differential Pressure Switch Only
(Select Appropriate Electrical Options)
Z. Special
4
SEALS & DIAPHRAGM
0. Buna N
1. * Viton®
5. Ethylene Propylene
9. Special (Uncoded Options)
5
CONNECTIONS
0. 1/4" FNPT Back Connections
2. Dual1/4" FNPT Top & Bottom Connections (non electrical option
units only)
3. 1/4" FNPT Bottom Connections
4. 7/16”-20 Str. Thd. O-Ring (back Connections)
5. 1/2” FNPT S.S. Adaptors
8. 1/4" FNPT End Connections
9. Special (Uncoded Options)
(1) 1375 PSIG SWP
(2) Complete assembly 3
rd
party Certified, Class I, Division 2,
Groups A, B, C & D; Class II, Division 2, Groups F & G
NOTE: Not all options are available in combination with other
options .
Mid-West
®
Instrument
6500 Dobry Dr. Sterling Heights, MI 48314
TEL: (586) 254-6500 FAX: (586) 254-6509
E-Mail
:
sales@midwestinstrument.com
Web Page: www.midwestinstrument.com
6
OPTIONS (Up to four options)
O. None
A. Reversed High/Low Process Connections
F. Pipe Mounting Kit (Not available with both Reversed Port & all
Electrical options)
L. Liquid Fill ( Not available w/follower pointer Option M or 3 ½” Dial)
M. Maximum Indicator Follower Pointer
T. Oxygen Cleaning
U. S.S. Tag w/S.S. Wire
V. S.S. Tag w/S.S. Screws (contact factory on switch options)
W. Wall Mounting Kit ( Not available with Back Connections)
X. Chemical Seals (Contact Factory For Accuracy)
Z. Special Uncoded Options
7
ELECTRICAL CONFIGURATIONS
(Switch Adjustable Range 15-95%)
O. None
A. One (1) Reed Switch in NEMA 4X / IP66 Enclosure
B. Two (2) Switches in NEMA 4X / IP66 Enclosure
E. One (1) Reed Switch in NEMA 4X / IP66 Aluminum Enclosure
With CSA / UL Div II Listing.
(1) (2)
F. Two (2) Reed Switches in NEMA 4X / IP66 Aluminum Enclosure
With CSA / UL Div II Listing.
(1) (2)
T. 4-20 mA Transmitter in NEMA 4X/IP66
W. 4-20 mA Transmitter in NEMA 4X/IP66 aluminum enclosure,
Division 2 Hazardous Locations.
(1) (2)
Z. Special
8
ELECTRICAL SPECIFICATIONS
A. SPDT 3W, 0.25 Amp, 125 VAC/VDC
B. SPST 25W, 0.5 Amp, 240 VAC/VDC Normally Open
T. 4-20 mA Transmitter (Loop Powered 8-28 VDC Input)
Z. Special
* Viton is a registered trademark of Dupont Dow Elastomers
1 4 2
PROOF PRESSURE: Two times the working pressure or 6000 PSI, whichever is lower at ambient temperature.
TEMPERATURE LIMITS: -40 ˚F (-40˚ C) to 200˚F (93˚C). These limits are based on the entire instrument being saturated to
these temperatures. System (process) temperatures may exceed these limitations with proper installation. Contact our customer
service representative for details.
STANDARDS: All Model 142 Series differential pressure gauges either conform to and/or are designed to the requirements of
the following standards:
ASME B1.20.1
NACE MR0175
ASME B40.100 NEMA Sts. 250
EN-61010-1 UL Std. No. 50 & 508 CSA-C22.2 No. 14,& 25
CE Marking Statements:
This product shall not be placed in an Explosive atmosphere as defined by the ATEX Directive 94/9/EC Evaluation to the directive’s
requirements is in process.
The Pressure Equipment Directive has been determined to be
non applicable for CE marking . These products are manufactured in
accordance with article 3, paragraph 3 of the directive, “sound engineering practice”. They fall below category I for non-hazardous gases,
hazardous liquids, & non-hazardous liquids. This product also falls below category I for hazardous gases at or below 200 bar.