Mid-West Instrument 522 User guide

BULLETIN NO. IM522/11A
Instrument
Mid-West
®
SYMBOLS USED ON PRODUCT
Caution Risk of Danger. Please refer to this
documentation when seen marked on the
product.
Equipment protected throughout by double
insulation.
This product is CE marked for conformance
with the Low Voltage Directive (73/23/EEC)
INSPECTION
Before installation check the receiving paperwork and
the intended application for correct part number,
materials of construction, working pressure, dial range,
etc. If equipped with switches, check electrical rating.
Inspect for shipping damage and, if damaged, report it
immediately.
NOTE - Before attempting repairs contact your
local Mid-West Representative or our factory.
Failure to do so will void any warranty.
INSTALLATION
The model 522 Indicating Differential Pressure Gauge /
Switch is calibrated and tested prior to shipment and is
ready for immediate installation. Use of the following
installation procedures should eliminate potential
damage and provide optimum trouble-free operation.
1. PROCESS CONNECTIONS
1/4" FNPT are provided as standard but check
paperwork for connections ordered. There are two
connections on the body identified as "hi" and "lo" for
high pressure and low pressure. Be sure these get
plumbed to the proper connections on your system.
Improper connection will not damage the instrument,
but it will not function properly.
2. INSTRUMENT LOCATION
On liquid service the instrument should be mounted
below the process connections to facilitate self-
bleeding. On gas service it should be located above
the process connections to promote self-draining. If
the process contains particulates, a "pigtail" loop or
drop leg (manometer "U-tube" configuration) in the
tubing will minimize the possibility of it migrating into
the instrument.
MATERIALS:
Elastomers: As specified on the order
Body: As specified on the order
Internals: Acetal, Ceramic, & SS
Switch: Flame Retardant VALOX & Flame
Retardant Epoxy
Connector: Polyamide 6, 30% Glass Fill, Flame
Retardant
ELECTRICAL (LE OPTION)
WARNING: ELECTRICALCONNECTIONS
SHOULD BE PERFORMED BY
QUALIFIED PERSONNEL AND
MEET REPRESENTATIVE NATIONAL
ELECTRICAL CODE.
IT IS RECOMMENDED TO REMOVE
POWER TO THE SWITCH PRIOR TO
MAKING SET POINT ADJUSTMENTS.
CAUTION: THIS DEVICE DOES NOT REQUIRE
POWER TO OPERATE. CONNECTION
DIRECTLY ACROSS A MAINS POWER
SOURCE MAY DAMAGE THE SWITCH.
The SPST (Single Pole Single Throw) switch is
intended for on / off control or status input to devices
that have load characteristics within the ratings of 60
Watts max, 3 A max., 240 VAC / VDC maximum. The
product of the switching voltage and current shall
not exceed 60 W.
The adjustable switch supplied with your order can be
re-adjusted between 40% and 95% of the full scale
range of the gauge by loosening the two adjustment
screws and sliding the switch assembly. Sliding the
switch to the left (facing the dial front) decreases the
switch set point. Re-tighten the switch adjust locking
screws while applying light pressure to assembly to
keep it from rotating or shifting.
Interface:
The DIN interface conforms to DIN 43 650A / ISO 4400
and when mated provides an IP65 rated protection
class. The right angle mating connector is supplied
with the gauge upon order. Clocking (orientation) can
be changed by prying out the insert and rotating the
insert to the desired clocking (90 º increments).
Wiring to the SPST switch is between
terminals 1 & 2.
MODEL 522 Installation and Operating Instructions

CE Marking Statements:
This product is CE marked in compliance with the Low
Voltage Directive to EN-61010-1.
This product shall not be placed in an Explosive atmosphere
as defined by the ATEX Directive 94/9/EC except if
evaluated to be “Simple Apparatus” and it is installed in an
intrinsically safe system.
This product may be classified as simple apparatus.
However, the evaluation to the relevant portions of the
applicable standards and clearly identifying the product as
simple apparatus shall be the responsibility of the end user.
Pressure Equipment Directive:
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.
Simple Apparatus NEC 504.2
This product meets the simple apparatus definition as defined
in NEC 504.2 of Article 504 (Intrinsically Safe Systems).
Because of this classification, equipment listing is not
required (504.4) and ordinary wiring methods shall be
permitted (504.20) provided it is installed in an Intrinsically
Safe System. Proper installation of this product in a
hazardous location to the applicable requirements is the
responsibility of the end user / equipment installer.
SPECIFICATIONS
WORKING PRESSURE: 1000 PSI (69 bar) for Aluminum and Stainless Steel
500 PSI (34.5 bar) for Acetal
PROOF PRESSURE: 2000 PSI (139 bar) for Aluminum and Stainless Steel
1000 PSI (69 bar) for Acetal
MAX. DIFFERENTIAL PRESSURE (HI TO LOW): 200 PSID (13.8 bar)
ACCURACY: ±5 % of Full Scale
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 522 Series differential pressure gauges either conform to
and/or are designed to the requirements of the following standards:
ASME B1.20.1 CSA-C22.2 No. 14
ASME B40.1 NEMA Std. 250
EN-61010-1 UL Std. No. 50 & 508
DIMENSIONAL
2−1/2" DIAL
1.67
3.75
2.06
4.07
1/4 NPT PORT
BOTH ENDS
2.47
.83
1.44
.74
3.37
ADJUSTABLE SWITCH
WITH HIRSHMANN
(2) MOUNTIN HOLES
.38
1.25
1.750
TOP
CONNECTOR
OPTIONAL:
10−32 UNF−2B
(7) MIN. THREADS
.58

Remove the plug
-
in connector from the gauge assembly and using a
screwdriver pry out the insert from the connector shell.
Insert connection wires through the connector shell as shown.
Strip wire lead ends and connect to terminal locations
1 & 2 as shown. Terminals are marked.
Insert terminal connection insert into connector shell. Rotate if
necessary to the desired clocking.
Mating Connector: Connection Instructions
(Note: Delivered connector may appear different from item pictured)
Mid-West

Instrument
6500 Dobry Dr. Sterling Heights, MI 48314
[phone] FAX [phone]
E-mail [e-mail]
Printed in the U.S.A.

Standard Model Specifications:
522
-
A
A
-
02
-
O
O
1000 PSIG Working Pressure, Aluminum body, 316L Stainless Steel, Ceramic & Acetal Internal Parts
Buna-N Diaphragm and Seals, ¼” FNPT End Connections
2-1/2” Round Black on White Dial w/ Engineered Plastic Case & Shatter Resistant Acrylic Lens
Accuracy ±5% Full Scale(Ascending)
Range 0-5 PSID to 0-50 PSID (0.35 to 3.5 bar)
2 Material
A Aluminum Body / 316 Stainless Steel, Ceramic & Acetal moving components
S 316 S.S. Body / 316 Stainless Steel, Ceramic & Acetal moving components
P Acetal (Plastic) Body / 316 Stainless Steel, Ceramic & Acetal moving components
3 Dial Size & Type
A 2-1/2" Round, Black on White Dial w/Engrd. Plastic Dial Case.
(Standard)
T Non-Indicating DP Switch Only
4 Seal Materials
0 Buna-N
1 Viton®-A Registered Trademark of Dupont
5 Process Connections
2 1/4" FNPT End Connections
6 Options
O None
A (2)10-32 Mounting Holes, Spaced 1.75" apart. x .330" Deep
7 Electrical Configuration
O None
L
(1) Switch in Std. enclosure with plug-in connector (DIN43650/IP65-PG11) NEMA 4X
Available with SPST 60W N.O. Electricals Only! Switch adj. 40 to 95% (F.S. Ascending)
8 Electrical Specifications
E SPST 60W 3.0 Amp 240 VAC/VDC (Normally Open)
Factory Preset of switch available at no charge
6500 Dobry Dr. • Sterling Heights, MI USA • Toll Free: 800-648-5778 • Ph 586-254-6500 • Fax [phone]
Web Site: www.midwestinstrument.com • Email Contact: [e-mail]
Mid-West understands that in today’s demanding environment, flexibility, quick response time and the
ability to ship most of our product line in 2 weeks or less is essential to our customers. Standard configurations
can be customized and modified to suit our customer’s needs for ease of installation or retrofit.
If you are in need of additional information please visit our web site at www.midwestinstrument.com
or contact us toll free at 1-800-648-5778 and one of our knowledgeable sales coordinators will be happy to
assist you…
7 84 5 62 31
5 2 2
Range:_________________
Basic Model