Series MS2 Magnesense® II Differential Pressure Transmitter

Product Description

The Series MS2 Magnesense® II Differential Pressure Transmitter combines the proven stable Hall Effect sensing technology of our original Series MS with additional features to reduce installation time and simplify ordering. In this second generation transmitter, we have added additional field selectable pressure ranges so that each model can have four selectable ranges along with four additional bidirectional ranges. When using the pluggable integral display or the portable remote display tool, both Metric and English engineering units can be selected via on board dip switches. Dual current and voltage outputs allow users to simultaneously take either a current or voltage output to their building controller and have a local test circuit for verification of the output reading. The voltage output can be selected to be either 0 to 5 VDC or 0 to 10 VDC, while the current is always 4 to 20 mA. Both the current and voltage output can also be inverted. The MS2 can also be ordered with either a BACnet® or MODBUS® Communications protocol output that will allow the transmitters to be daisy-chained together.

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.

BACnet® and Modbus® Communications protocol recommend limiting the number of nodes in any segment to 32. Therefore, the transceiver may be rated at one unit load. Fractional loads are also acceptable. The MS2 accounts as an eighth of a load on the MSTP network.

Product Applications

• Duct Static Pressure
• Fan Proving

Ordering

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″ (40 Pa), 0.25″ (50 Pa), 0.5″ (100 Pa), 2″ (500
Pa), 3″ (750 Pa), 5″ (1250 Pa), 10″ (2 kPa), 15″ (3 kPa), 25″ (5 kPa), 28″ (6.975
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 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.

Options

Options

• Add -LCD to end of model numbers for units with display
  Example: MS2-W101-LCD
• Add -BC to end of model numbers for BACnet® Communications
  Example: MS2-W101-BC
• Add -MC to end of model numbers for Modbus® Communications
  Example: MS2-W101-MC
• Add -NIST to end of model numbers for NIST Traceable Certificate
  Example: MS2-W101-NIST
• Add -FC to end of model numbers for Factory Calibration Certificate
  Example: MS2-W101-FC
• Change W to D for Duct Mount Static Probe
  Example: MS2-D101
• Change W to N for DIN Rail Mounting
  Example: MS2-N101

LIterature

Manuals

BACnet Protocol Implementation Conformance
Instruction Manual (A-435-A)
Instruction Manual (MS2)
Instruction Manual (MS2-B)
Instruction Manual (MS2-M)

Catalog Pages

Series MS2 Catalog Page

Approvals

BTL Certificate
RoHS Letter of Compliance
CE Approval

Accessories

	Model Number	Description
	A-435-A	Remote display tool for the MS2 Series.
	A-480	Plastic static pressure tip.
	A-481	Installer kit, (includes 2 static pressure tips and PVC tubing).
	A-489	4″ 303 SS straight static pressure tip with flange.
	A-302F-A	303SS static pressure tip with mounting flange, 4″ hook style. For 3/16″ ID rubber or plastic tubing, includes mounting screws.
	SCD-PS	100 to 240 VAC/VDC to 24 VDC power supply.
	A-151	Cable gland for 5 to 10 mm diameter cable.
	A-MS2-LCD	Replacement display for the MS2 Series.

Model Chart