DWYER INSTRUMENTS, INC. | dwyer-inst.com66
The Series MS2 Magnesense® II Differential Pressure Transmitter combines
the proven stable piezo technology and the versatility of our original Series MS with
additional features to reduce installation time and simplify ordering. Like the original
Series MS, the second generation transmitter can be used as a linear pressure output
or a linear velocity output with the square root extraction done in the transmitter.
Additional parameters have been included to expand the square root capability to
include flow measurements.
FEATURES/BENEFITS
• Field selectable ranges and output signal reduce inventory and the chances of
ordering an incorrect part
• BACnet or Modbus® serial communications reduce wiring cost by daisy-chaining the
transmitters
• Our integral field-upgradeable display or plug-in remote display tool save upfront
material cost and allow for local viewing of measurements
APPLICATIONS
• Filter monitoring in air handler units
• Building pressure in pharmaceutical-semi-conductor clean rooms
• Duct static pressure in commercial buildings
• Air velocity/flow in VAV systems
Ø3-7/16
[Ø87.31]
2-41/64
[67.07]
1/2 NPS
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]
Ø3-7/16
[Ø87.31]
1/2 NPS
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]
Differential Pressure Transmitters PRESSURE
Modbus® is a registered trademark of Schneider Automation, Inc.
Process Tubing Options: See page 455 (Gage Tubing Accessories)
Wall mount bracket
Duct mount bracket
DIN mount bracket
SPECIFICATIONS
Supported Baud Rates: 9600, 19200,
38400, 57600, 76800, 115200.
Data Size: 8.
Parity: None.
Stop Bits: 1.
Service: Air and non-combustible,
compatible gases.
Wetted Materials: Consult factory.
Typical Accuracy: ±1% FS for 0.15 in
w.c. (40 Pa), 0.25 in w.c. (50 Pa), 0.5
in w.c. (125 Pa), 2 in w.c. (500 Pa), 3 in
w.c. (750 Pa), 5 in w.c. (1250 Pa), 10 in
w.c. (2 kPa), 15 in w.c. (3 kPa), 25 in w.c.
(5 kPa), 28 in w.c. (6.975 kPa); ±2% FS
for 0.1 in w.c. (25 Pa), 1 in w.c. (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: 10-35 VDC
(2-wire), 17-36 VDC or isolated 21.6-33
VAC (3-wire).
Output Signals: 4-20 mA (2-wire), 0-5
VDC, 0-10 VDC (3-wire).
Response Time: Adjustable: 0.5 to
15 sec. time constant. Provides a 95%
response time of 1.5 to 45 seconds.
Zero & Span Adjustments: Digital
push-buttons.
Loop Resistance: Current output: 0 to
1250 Ω max; Voltage output: Min. load
resistance 1 kΩ.
Current Consumption: 40 mA max.
Display (Optional): 5 digit LCD.
Electrical Connections: 3-wire
removable European style terminal block
for 16 to 22 AWG.
Electrical Entry: 1/2˝ NPS thread.
Process Connection: 3/16˝ ID tubing (5
mm ID); Max. OD 9 mm.
Enclosure Rating: IP66.
Mounting Orientation: Not position
sensitive.
Weight: 8.0 oz (230 g).
Agency Approvals: BTL, CE.
MAGNESENSE® II DIFFERENTIAL PRESSURE TRANSMITTER
Monitors Pressure, Air Velocity and Air Flow, BACnet or Modbus® Communications
SERIES MS2
®
V
I
D
E
O
O
N
L
I
N
E
YEAR LIMITED
WARRANTY
MODEL CHART
Model in w.c. Pa mm w.c. kPa
MS2-W101
MS2-W111
MS2-W102
MS2-W112
MS2-W103
0.10, 0.15, 0.25, 0.50
±0.10, ±0.15, ±0.25, ±0.50
1, 2, 3, 5
±1, ±2, ±3, ±5
10, 15, 25, 28
±10, ±15, ±25, ±28
25, 40, 50, 125
±25, ±40, ±50, ±125
250, 500, 750, 1250
±250, ±500, ±750, ±1250
2500, 3500, 5000, 6975
±2500, ±3500, ±5000, ±6975
2.5, 4, 6, 10
±2.5, ±4, ±6, ±10
25, 50, 75, 125
25, 50, 75, 125
250, 350, 500, 697.5
±250, ±350, ±500, ±697.5
0.025, 0.04, 0.05, 0.125
±0.025, ±0.04, ±0.05, ±0.125
0.25, 0.5, 0.75, 1.25
0.25, 0.5, 0.75, 1.25
2.5, 3.5, 5.0, 6.975
±2.5, ±3.5, ±5.0, ±6.975
Note: For duct mount static probe change W to D. Example: MS2-D101
For DIN rail mounting change W to N. Example: MS2-N101
ACCESSORIES
Model Description
A-151
A-MS2-LCD
A-435-A
A-480
A-481
A-489
A-302F-A
SCD-PS
Cable gland for 5 to 10 mm diameter cable
Field upgradeable display
Remote display tool
Plastic static pressure tip
Installer kit; includes 2 plastic static pressure tips and 7 ft
(2.1 m) of PVC tubing
4˝ 303 SS straight static pressure tip with flange
4˝ 303 SS static pressure tip with mounting flange; for
3/16˝ ID rubber or plastic tubing
100 to 240 VAC/VDC to 24 VDC power supply
OPTIONS
To order add suffix: Description
-LCD Units with display
Example: MS2-W101-LCD
-BC BACnet Communications
Example: MS2-W101-BC
-MC Modbus® Communications
Example: MS2-W101-MC
-NIST NIST traceable calibration certificate
Example: MS2-W101-NIST
-FC Factory calibration certificate
Example: MS2-W101-FC