Dwyer MS2-B - Manual

Bulletin P-MS2-B
The Series MS2 Magnesense ® II Differential Pressure Transmitter with
BACnet Communication Protocol combines the proven stable Hall Effect
sensing technology of our original MS Series with additional features to reduce
installation time and simplify ordering. When using the pluggable integral display,
either Metric or English engineering units can be selected by changing the dip
switch position. A major benefit of the communications is the transmitters can be
daisy-chained together to reduce wiring time and installation cost. The
communications allow for the transmitter to integrate seamlessly into the existing
building automation control.
Like the original Series MS, the second generation transmitter can display pressure
or velocity with the square root extraction internal to the transmitter. Additional
parameters have been included to expand the square root capability to include flow
measurements.
INSTALLATION
Surface Mount:
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. Attach the mounting flange to a flat surface using three #8 x 1/2˝
pan head sheet metal screws. Do not over tighten.
Duct Mount:
The transmitter should be mounted away from fans, corners, heating and cooling
coils and other equipment that will affect the measurement of the pressure.
1. To mount the transmitter, drill a 9/16˝ (12.70 mm) diameter hole into the duct.
2. Insert transmitter probe into the duct.
3. Mark location of three mounting holes on duct using mounting flange as
template. Drill holes.
4. Attach mounting flange to duct with three #8 x 1/2˝ pan head sheet metal
screws. Do not over tighten screws.
DWYeR INSTRUMeNTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. fax: 219/872-9057 e-mail: [email protected]
SPeCIfICATIONS
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult factory.
Accuracy: ±1% FS for 0.25˝ (50 Pa), 0.5˝ (100 Pa), 2˝ (500 Pa), 5˝ (1250 Pa),
10˝ (2 kPa), 15˝ (3 kPa), 25˝ (5 kPa); ±2% FS for 0.1˝ (25 Pa), 1˝ (250 Pa), and
all bi-directional ranges.
Stability: ±1% / year FSO.
Temperature Limits: 0 to 150°F (-18 to 66°C).
Pressure Limits: 1 psi max., operation; 10 psi burst.
Power Requirements: 10 to 36 VDC or isolated 21.6 to 33 VAC.
Output Signals: BACnet MS/TP communication protocol.
Response Time: Averaging, adj 0 to 240 s.
Zero & Span Adjustments: Digital push buttons.
Current Consumption: 40 mA max.
Display (optional): 5-digit LCD.
electrical Connections: 5-wire terminal block, 18 to 24 AWG.
electrical entry: 1/2˝ NPS thread; Accessory (A-151): Cable gland for 5 to 10
mm diameter cable.
Process Connection: 3/16˝ ID tubing (5 mm ID); Max. OD 9 mm.
enclosure Rating: NEMA 4X (IP66).
Mounting Orientation: Diaphragm in vertical position.
Weight: 8.0 oz (230 g).
Agency Approvals: CE, RoHS.
Specifications - Installation and Operating Instructions
Series MS2 Magnesense ® II Differential Pressure Transmitter
with BACnet Communication
Ш3-7/16
[Ш87.31]
2-41/64
[67.07]
1/2 NPT
21/32
[16.67]
21/32
[16.67]
29/32
[23.02]
1/2
[12.70]
57/64
[22.62]
(3) 3/16 [4.76] HOLES
EQUALLY SPACED ON A
4.115 [104.52] BC
2-11/64
[55.17]
2-9/16
[65.09]
ш3-7/16
[Ш87.31]
1/2 NPT
25/64
[9.96]
1-41/64
[41.71]
2-41/64
[67.24]
21/32
[16.67]
57/64
[22.62]
21/32
[16.67]
29/32
[23.02] 1/2
[12.70]
2-11/64
[55.17]
3-11/32
[84.84]
3-1/2
[88.90]
7-3/4
[196.77]
3/8
[9.53]
Wall Mount Bracket
Duct Mount Bracket
DIN Mount Bracket