aldes VEX 725T Handbuch für Montage und Wartung - Seite 18
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11. DIFFERENTIAL PRESSURE
TRANSMITTER
®
MAGNESENSE
II DIFFERENTIAL PRESSURE TRANSMITTER
Monitors Pressure, Air Velocity and Air Flow, BACnet/Modbus
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®
The SERIES MS2 Magnesense
bines 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 fl ow
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 dai-
sy-chaining the transmitters
• Our integral fi eld-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/fl ow in VAV systems
SPÉCIFICATIONS
Supported Baud Rates: 9600, 19200, 38400, 57600, 76800, 115200.
Data Size: 8.
Parity: None.
Stop Bits: 1.
Service: Air and non-combustible, compatible gases.
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1/2 NPS
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1/2 NPS
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II Differential Pressure Transmitter com-
®
Communications
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Wall Mount Bracket
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Duct Mount Bracket
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DIN Mount Bracket
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 to 35 VDC (2-wire), 17 to 36 VDC or isolated
21.6 to 33 VAC (3-wire).
Output Signals: 4 to 20 mA (2-wire), 0 to 5 VDC, 0 to 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: Diaphragm in vertical position.
Weight: 8.0 oz (230 g).
Agency Approvals: BTL, CE.
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