User Guide

Series MS Magnesense
®
Differential Pressure Transmitter
Specications - Installation and Operating Instructions
Bulletin A-26
The Series MS Magnesense
®
Differential Pressure Transmitter is an extremely
versatile transmitter for monitoring pressure and air velocity. This compact package
is loaded with features such as: eld selectable English or metric ranges, eld
upgradeable LCD display, adjustable dampening of output signal (with optional
display) and the ability to select a square root output for use with pitot tubes and other
similar ow sensors. Along with these features, magnetic sensing technology provides
exceptional long term performance and enables the Magnesense
®
Differential Pressure
Transmitter to be the solution for a myriad of pressure and air ow applications.
Installation
Mounting:
The transmitter should be mounted on a vertical surface with the connections directed
down to prevent moisture from entering either the pressure ports or the electrical cable
entry. The diaphragm must be vertical to minimize gravity effects on the diaphragm.
Mount the transmitter using #8 x 1/2˝ pan head sheet metal screws in the mounting
anges. Do not over tighten.
Duct Mount:
The transmitter should be mounted away from fans, corners, heating and cooling coils
and other equipment that will effect the measurement of the pressure.
1. To mount the transmitter, drill a .562 (12.70) diameter hold into the duct.
2. Insert transmitter probe into the duct.
3. Mark location of three mounting holes on duct using mounting ange as template.
Drill holes.
4. Attach mounting ange to duct with (3) #8 x 1/2 pan head sheet metal screws. Do
not overtighten screws.
Electrical Connection:
2-Wire Operation:
SPECIFICATIONS
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult factory.
Accuracy: ±1% for 0.25˝ (50 Pa), 0.5˝ (100 Pa), 2˝ (500 Pa), 5˝ (1250 Pa), ±2% for
0.1˝ (25 Pa), 1˝ (250 Pa) and all bi-directional ranges.
Stability: ±1% FS/ year.
Temperature Limits: 0 to 150°F (-18 to 66°C).
Pressure Limits: 1 psi (6.89 kPa) maximum, operation; 10 psi (68.9 kPa) burst.
Power Requirements: 2-wire, 10-35 VDC; 3-wire, 17-36 VDC or isolated 21.6-33
VAC.
Output Signals: 2-wire, 4-20 mA; 3-wire, 0-10 V or 0-5 V.
Response Time: 300 ms.
Zero and Span Adjustments: Digital push button.
Loop Resistance: Current output: 0-1250 Ω max; Voltage output: min. load
resistance 1 k Ω.
Current Consumption: 40 mA max.
Display (optional): 4 digit LCD.
Electrical Connections: 4-20 mA units: 2-wire: European style terminal block for
16 to 26 AWG; 0 to 10 V units: 3-wire: European style terminal block 16 to 22 AWG.
Electrical Entry: 1/2˝ NPS thread. Accessory: A-151 cable gland for 5 to 10 mm
diameter cable.
Process Connections: 3/16˝ (5 mm) ID tubing. Max OD 9 mm.
Enclosure Rating: NEMA 4X (IP66).
Mounting Orientation: Diaphragm in vertical position.
Weight: 8.0 oz (230 g).
Agency Approval: CE.
The following standards were used for CE approval: CENELEC EN 61000-4-2:
2001, CENELEC EN 61000-4-3: 2002, CENELEC EN 61000-4-4: 1995, CENELEC
EN 61000-4-5: 2001, CENELEC EN 61000-4-6: 2003, CENELEC EN 61000-4-8:
2001, CENELEC EN 55011: 2003, CENELEC EN 61326: 2002, 89/336/EED EMC
Directive.
DO NOT EXCEED SPECIFIED SUPPLY VOLTAGE RATINGS.
PERMANENT DAMAGE NOT COVERED BY WARRANTY WILL
RESULT. 2-WIRE UNITS ARE NOT DESIGNED FOR AC VOLTAGE OPERATION.
CAUTION
2-41/64
[67.07]
29/32
[23.02]
1/2
[12.70]
57/64
[22.62]
21/32
[16.67]
21/32 [16.67]
3-7/16 [87.31]
2-9/16
[65.09]
[3] 3/16 [4.76] HOLES
EQUALLY SPACED ON
A
4.115 [104.52] BC
2-11/64
[55.17]
7-11/16 [195.26]
15/64
[6.00]
3/8 [9.53]
1/2 NPS
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: [phone]
Fax: [phone]
www.dwyer-inst.com
e-mail: [e-mail]
®