Dwyer Instruments IWP Operating Manual

Series IWP Industrial Weatherproof Pressure Transmitter

1

-43/64

[

42.50]

1

-1/4

[

31.65]

2X 1/2˝
FEMALE
NPT PLUGS

2-31/64

[63.25]

1/2˝ FEMALE NPT
PRESSURE PORT

1

-3/64

[

26.50]

2-1/64

[51.00]

1-11/32
[34.25]

B

ACK LID REMOVED

POWER

4 TO 20 MA

METER

RL

FIELD

TERMINALS

OUT TEST

Specifications - Installation and Operating Instructions

he Series IWP Pressure Transmitter provides an excellent solution to pressure

T

easurement in industrial conditions. The transmitter delivers a 4 to 20 mA signal

m

n response to the pressure being measured against its stainless steel diaphragm.

i
The 4-digit LED display allows for easy field inspection of pressure in psi units. The
IP65 rated or industrial conduit entry enclosure ensures the high quality sensor

ircuitry is able to maintain precise operation under dirty and wet conditions, making

c
the Series IWP an ideal choice for petroleum, chemical and metallurgical industry
applications.

FEATURES

Industrial weatherproof conduit entry enclosure

•
4-digit LED display

•

PECIFICATIONS

S

ervice: Gases and liquids compatible

S

ith wetted materials.

w
Wetted Materials: 304 and 316
stainless steel.

ccuracy: 0.5% FS.

A
Stability: <0.2% FS per year.
Temperature Limits: -22 to 185°F (-30

to 85°C).

Compensated Temperature Limits:

4 to 158°F (-10 to 70°C).

1

ressure Limits: 1.5 x pressure range.

P

Bulletin P-IWP

emperature Coefficient: 0.3% F.S.

T

er 10°C.

p

ower Requirements: 12 to 36 VDC.

P
Output Signal: 4 to 20mA.
Loop Resistance: 1200 Ω max.

lectrical Conduit Connection: 1/2˝

E

female NPT.
Process Connection: 1/2˝ female
NPT.

Enclosure Rating: IP65.

gency Approvals: CE.

A

INSTALLATION
Media Compatibility

Series IWP transmitters are designed to be used with any gas or liquid compatible
with both 304 and 316L stainless steel.

Environment

The operating temperature limits of the IWP are as follows:

Temperature Limits: -22 to 185°F (-30 to 85°C);
Compensated Temperature Limits: 14 to 158°F (-10 to 70°C).

Pressure Fittings

Typically, standard pipe fittings and installation procedures should be used.
However, for very high pressure ranges (such as those in excess of 500 psig), we
recommend the use of a sealant such as Loctite
Sealant.

Moisture Precautions

The Series IWP is provided with two 1/2˝ female NPT conduit entries for electrical
termination. In order to prevent ingress of moisture to the IWP, the ports must be
sealed in accordance with standard industry practice. It is recommended that a
sealer such as PTFE tape be applied around the threads of the conduits entering
the IWP.

Note: Buttons in front of Series IWP transmitters are not meant for customer use.
Tampering will void warranty.

©Copyright 2015 Dwyer Instruments, Inc. Printed in U.S.A. 4/15 FR# 444288-00

DWYER INSTRUMENTS, INC.

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: [phone] e-mail: [e-mail]

®

569 Thread Sealant, Hydraulic

ELECTRICAL INSTALLATION

Wiring is to enter the IWP by one of the 1/2˝ female NPT conduit entries. Remove
the rear solid metal cover by twisting counterclockwise.

The terminal strip, as pictured above, will be shown. A power supply with an output
of 12 to 36 VDC must be connected to the device at the “OUT” terminals (two left
terminals). Unscrew the terminal blocks, insert each wire (observing polarity), and
retighten the terminal blocks. The device will deliver a 4 to 20 mA rated current to
any external load, such as an ammeter, provided its resistance is between 1 and
1200 ohms.

MAINTENANCE/REPAIR

After final installation of the Series IWP Industrial Weatherproof Pressure
Transmitter, no routine maintenance is required. A periodic check of system
enclosure integrity is recommended to ensure against ingress of moisture. These
devices are not field repairable and should be returned to the factory if service is
required. After first obtaining a Return Goods Authorization (RGA) number, send
the material, freight prepaid, to the following address. Please include a clear
description of the problem plus any application information available.

Dwyer Instruments, Inc.
Attn: Repair Department
102 Highway 212
Michigan City, IN 46360

Loctite® is a registered trademark of Henkel Corporation

Phone: [phone] www.dwyer-inst.com