Dwyer Air Velocity Transmitter MS2+PAFS Series
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Dwyer Air Velocity Transmitter MS2+PAFS Series

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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.

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.

 

APPLICATION
• Zone control in HVAC systems

SPECIFICATIONS
Service: Air and compatible gases.
Wetted Materials: ABS/polycarbonate (UL94-5V).
Temperature Limits:
Operating: 40 to 120°F (4 to 49°C);
Storage: -40 to 140°F (-40 to 60°C).
Process Connection: 1/4˝ (6 mm) ID, 3/8˝ (10 mm) OD tubing.
Mounting Orientation: Integral flange with gasket.
Weight: 1 oz (28 g).

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.

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.

 

APPLICATION
• Zone control in HVAC systems

SPECIFICATIONS
Service: Air and compatible gases.
Wetted Materials: ABS/polycarbonate (UL94-5V).
Temperature Limits:
Operating: 40 to 120°F (4 to 49°C);
Storage: -40 to 140°F (-40 to 60°C).
Process Connection: 1/4˝ (6 mm) ID, 3/8˝ (10 mm) OD tubing.
Mounting Orientation: Integral flange with gasket.
Weight: 1 oz (28 g).

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Cancellations :

– Please send an email at sales@futuristicclimatecontrols.in
- Cancellation will be accepted only if the product does not meet the specifications mentioned on our portal.




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If you think, you have received the product in a bad condition or if the packaging is tampered with or damaged before delivery, please refuse to accept the package and return the package to the delivery person. Also, please call our customer care at +91 9723810294 or email us at sales@futuristicclimatecontrols.in mentioning your Order ID. We will personally ensure that a brand new replacement is issued to you with no additional cost. Please make sure that the original product tag and packing is intact when you send us the product back.

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– All deliveries are F.O.R. Ahmedabad Airport, India. However, all customs & import duties are to be borne by the customer at the country of import. In case of return, the customs & import duties of our country ( India ) , if charged by the authorities, will be deducted from the refund amount. In case of repair, the import/custom duties as levied by Indian Authorities will be to Customer Account.


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- Replacement will not be valid if the Instrument is tampered or used without following the instruction procedures as mentioned in User manual.



Refund :

Refunds will be made in the same form or by most convenient form ,that the payment is received, within 10 – 15 working days from the date of cancellation of order. However a levy of 3% will be charged towards payment processing charges (Payment Gateway Charges).