Product Details
Dwyer MS - 111 Micro Differential Pressure Transmitter
Product Introduction
The Dwyer MS - 111 Micro Differential Pressure Transmitter, part of
the MS series, is a highly adaptable solution for precise pressure
and wind speed monitoring. Engineered with magnetic sensing
technology, it delivers exceptional long - term performance,
catering to thousands of pressure and flow measurement needs across
diverse applications. Its compact design integrates user - friendly
field - adjustable features, making it a go - to choice for
building management, HVAC systems, and industrial flow monitoring.
Product Features
- Unit Flexibility: Field - selectable between English (e.g., inches
of water column) and Metric (e.g., Pascals) units, suiting global
operational requirements.
- Display Customization: Field - upgradeable 4 - digit LCD display,
enabling clear, on - site pressure and flow data visualization.
- Signal Control: Adjustable output signal damping (with optional
display), minimizing measurement fluctuations for stable, reliable
readings.
- Flow Compatibility: Capable of square root output selection, ideal
for use with pitot tubes and similar flow sensors to accurately
measure velocity.
- High Precision: Delivers ±1% accuracy (for applicable ranges),
ensuring dependable data for critical pressure and flow monitoring
tasks.
- Durable Performance: Boasts ±1% FS/year stability, withstanding
temperature variations (0 to 150°F / - 18 to 66°C) and pressure
limits (1 psi operation, 10 psi burst) for long - lasting,
consistent operation.
- Versatile Compatibility: Works with air, non - combustible, and
compatible gases, fitting into multiple industrial and commercial
ventilation, HVAC, and building pressure applications.
- Easy Integration: Offers flexible electrical wiring (4 - 20 mA 2 -
wire or 0 - 10 V 3 - wire) and mounting (diaphragm vertical),
simplifying installation into existing systems.
Technical Specs at a Glance
Brand name | Dwyer |
Model | MS-111 |
Output signal | 4~20 mA |
Display | 4 digit LCD. |
Service | Air and non-combustible compatible gases. |
Accuracy | ±1% for 0.25" (50 Pa) |
Stability | ±1% FS/year. |
Temperature Limits | 0 to 150°F (-18 to 66°C). |
Pressure Limits | 1 psi maximum, 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). |
Response Time | 300 ms. |
Mounting Orientation | Diaphragm in vertical position. |
Weight | 230g |
Company Profile
Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of
measuring instruments , located in China xi’an City. Since 2008,
Xi'an Kacise focused on the development and production of pressure,
level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical
and management personnel, through efforts of our entire staff, we
have become a professional measuring instrument manufacturer and
solution provider. And we are continuously trying to improve
product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE,
intrinsic safety explosion-proof and isolated safety
explosion-proof certificates, etc. which ensure that our products
comply with international standards.

Kacise sensors have already been exported to America, Spain,
Australia, Chile and 20 other countries and regions, and received
many favorable feedbacks. Our overseas distributers are also
increasing. We regard “reasonable prices, efficient production time
and good after-sales service” as our tenet, and hope to cooperate
with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices,
and provides industry-leading customer service. We personally get
to know each of our customers, and we know how to discover the most
valuable part of our business , to help others achieve their goals.