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Series-MSX-Magnesense
MSX Magnesense® Differential Pressure Transmitter, 32 Ranges, Dual Output
- Read LCD values easier with rotatable 180° display
- Quick and easy wiring via the optional toolless terminal block
- Add safety to variety of applications with UL94 V-0 and plenum ratings
Series-MSX-Magnesense
From
SGD
203.98
Product Overview
- Accuracy Detail ± 1% FSO
- Applications Building and Maintenance, HVAC
- Burst Pressure 6 psi Maximum
- Electrical Connection 1/2 in NPS female Conduit with Screw Terminal block
- Electrical Output 4 to 20 mA, 0 to 5 Vdc, 0 to 10 Vdc
- Enclosure Ratings IP66, NEMA Type 4X, UL94 V-0, UL 2043 (Plenum)
- Long Term Stability ± 1% FSO/year
- Loop Resistance Current Output: 0 to 1250 Ω max, Voltage Output: Load resistance 1 kΩ min.
- Material Construction Option N/A
- Materials, Wetted Consult Factory
- Media Compatibility Clean dry air / inert gas, HVAC / room air, Inert / non-reactive gases, Helium, Nitrogen, Non-Conductive Gases, Non-Corrosive Dry Gases, Air, Argon, Carbon dioxide
- Mounting Note Not Position Sensitive
- Number of Wires 2, 3
- Operating Temperature, Max 70 °C
- Operating Temperature, Min -20 °C
- Output Detail Field Selectable
- Output Signal Current, Voltage
- Power Consumption max 21 mA
- Measurement Pressure Type Differential
- Process Connection Size 1/8 in, 3/16 in, 1/4 in
- Process Connection Type Stepped Barb Fitting
- Response Time 3 s
- Response Time Note Instantaneous (default) or 3 s (selectable)
- Series ID Series-MSX-Magnesense
- Span Adjustment Push Button
- Supply Power Type AC/DC
- Supply Voltage 2-Wire: 10 to 36 Vdc, 3-Wire: 17 to 36 Vdc/21.6 to 33 Vac
- Weight 230 g
- Wire Gauge 26 to 16 AWG
- Zero Setting Adjustable Range Digital push-button
Supported Applications
The Dwyer Series MSX Magnesense® Differential Pressure Transmitter monitors differential pressure in building control applications. Documented uses include filter monitoring in air handler units, building pressure management in clean rooms, duct static pressure measurement, and air velocity or flow calculation in VAV systems.
- Filter monitoring
- Clean room building pressure
- Duct static pressure
- Air velocity/flow in VAV systems
Operating Conditions & Performance
The Series MSX measures differential pressure for air and non-combustible, compatible gases. The transmitter operates within an ambient temperature range of -4 to 158°F (-20 to 70°C). Accuracy is specified as ±1% FSO with stability rated at ±1% FSO/year.
Pressure limits vary by selected range: Ranges 0 and 1 support a maximum operating pressure of 3.6 psi with a burst rating of 6 psi; Ranges 2, 3, and 4 support a maximum operating pressure of 6 psi with a burst rating of 6 psi. The response time is instantaneous by default or selectable up to 3 s (configurable up to 30 s when equipped with an LCD). Power consumption is DC: 0.5 W or AC: 0.5 VA.
Configuration Options
Housing and Mounting Options
- Wall mount (-W)
- Universal wall/duct mount (-U, -Y for square housing)
- DIN rail mount (-N, -Z for square housing)
- Square Housing Wall mount (-S)
Process and Electrical Connections
The transmitter accepts process connections via 1/8", 3/16", 1/4", 5 mm, or 6 mm ID flexible tubing. The electrical entry is a 1/2" NPS thread with a 4-position removable terminal block for 16 to 26 AWG wire (optional toolless terminal block available).
Output Signals and Communication
- Analog: 4-20 mA (2-wire), 0-10 V or 0-5 V selectable (3-wire)
- Dual Output: Simultaneous Current and Voltage output supported
- Communication Protocols: BACnet MS/TP, Modbus® RTU via TIA/EIA-485
Sensor Ranges and Modes
The series offers 32 configurable pressure ranges available in unidirectional or bidirectional modes. Pressure units include inches of water column (in w.c.), Pascals (Pa), and millimeters of water column (mm w.c.). The transmitter calculates linear pressure, velocity, or flow using square root extraction.
Approvals and Ratings
- NEMA 4X (IP66)
- UL 2043 (Plenum)
- UL94 V-0
- BTL Listed, CE Marked
Key Product Differences
The Series MSX is distinguished by its mounting configuration and output capabilities. Models are available with a standard round housing or an optional square housing for specific DIN rail applications. The Universal model (-U) can function as a wall-mount transmitter; before mounting, the included plug must be inserted into the duct probe port.
Communication-enabled models (option code -COM) support BACnet MS/TP and Modbus® RTU protocols with configurable baud rates from 9600 to 115200. Models equipped with an optional LCD display feature a rotatable 180° screen for easier reading; the display must be removed before wiring.
Wetted materials are not specified in the documentation and require consultation with the factory. The transmitter is not field serviceable, and repair requires return to the manufacturer.
