WIKA S-11 Flush Diaphragm Pressure Transmitter For 4-20mA Output IP65

WIKA S-11 Flush Diaphragm Pressure Transmitter For 4-20mA Output IP65
WIKA S-11 flush diaphragm pressure transmitter with 4-20mA output, IP65 protection, high accuracy, and clog-resistant design for viscous media.
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Product Description

Product Description

The S-11 pressure transmitter is equipped with a flat embedded diaphragm and is specifically designed to measure media that can block pressure channels in traditional process connections, such as viscosity, paste like, adhesive, crystallization, particle containing, and contaminated media.

This model of transmitter adopts optimized design and uses a flat embedded diaphragm process connector, which integrates the cleanliness of the liquid receiving diaphragm in the process connector. In this way, this model of transmitter achieves low maintenance and fault free pressure measurement even when used in critical applications where media is frequently replaced.

The main features of the S-11 transmitter include high precision, durability, high-quality manufacturing, and highly flexible configuration.


Core functional characteristics

  • Flush diaphragm (dead-space-free); fully welded 316L stainless steel wetted parts; non-clogging & easy to clean;

  • High accuracy up to ±0.125% BFSL; wide range from vacuum to 8000 psi; fast response & long-term stability;

  • Vibration/shock resistant; high ingress protection (IP65/IP67/IP68/IP6K9K); media temp up to 150°C (cooling element available);

  • Standard 4-20 mA (2-wire); optional 0-10 V/1-5 V; full process/electrical connection options (G thread, DIN, M12);

  • FDA 21 CFR 178.3750 food-grade fill fluid; hygienic 3-A approved; suitable for special media (O₂, H₂);

  • 5× overpressure protection; low drift <0.1%/year; 100M pressure cycles; long service life;


Measurement range: 0~1.6 bar up to 0~300 bar
Accuracy class: ±0.25% BFSL
Long-term stability: <0.2%/year
Responsive time: ≤ 2 ms
Supply Voltage: 10~30 VDC (2-wire / 3-wire)
Output signal: 4~20 mA two-wire system
Ingress Protection rating IP65 / IP67 / IP68 / IP6K9K (depending on the interface) WIKA
Material: stainless steel


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Products Recommended

Pressure Transmitters for Industrial Pressure Measurement

Xinyi Instrument supplies pressure transmitters for process control, hydraulic systems, petrochemical plants, water treatment, HVAC, power generation and general industrial pressure monitoring. Our pressure transmitter range covers gauge pressure, absolute pressure, differential pressure, high temperature media and digital communication applications.

Choose from compact pressure transmitters, smart 3051 differential pressure transmitters, diaphragm seal models, RS485 digital pressure transmitters and high frequency dynamic pressure sensors. Standard outputs include 4-20 mA, voltage output, HART and RS485 Modbus options, with stainless steel wetted parts and custom process connections available on request.

Pressure Transmitter Parameters

Pressure Types Gauge, absolute, negative pressure, differential pressure
Measuring Range From low differential pressure to high pressure ranges up to 100 MPa, depending on model
Output Signals 4-20 mA, 0-5 V, 1-5 V, 0-10 V, RS485 Modbus, HART options
Accuracy Typical options include 0.1%, 0.2%, 0.25% and 0.5% FS
Process Connection M20 x 1.5, G1/4, G1/2, NPT and customized thread connections
Wetted Materials Stainless steel, 316L diaphragm and corrosion-resistant sealing options
Media Water, oil, gas, air, steam and compatible liquid or gas media
Applications Pipeline pressure, tank level, flow differential pressure, hydraulic pressure and automation systems

Recommended Pressure Transmitter Series

  • Xinyi YW-150 - differential pressure transmitter for stable industrial measurement.
  • Xinyi YW-3051DP - smart differential pressure transmitter for process control.
  • Xinyi YW-130 / YW-140 - compact pressure transmitters for general pressure monitoring.
  • RS485 Digital Pressure Transmitter - Modbus communication for remote monitoring systems.
  • High Temperature Pressure Transmitter - designed for hot media and demanding process conditions.
  • Siemens, Yokogawa and ABB Options - international brand transmitters available for project matching.

Pressure Transmitter FAQ

What is a pressure transmitter used for?

A pressure transmitter converts the pressure of liquid, gas or steam into a standard electrical signal for PLC, DCS, recorder or control instrument input. It is widely used for pipeline pressure, tank level, flow measurement and process safety monitoring.

How do I choose the right pressure transmitter?

Confirm the pressure range, pressure type, medium, temperature, output signal, accuracy, installation thread, electrical connection and environmental requirements. For corrosive media, high temperature or sanitary applications, diaphragm material and sealing structure are especially important.

What is the difference between gauge, absolute and differential pressure transmitters?

Gauge pressure transmitters measure pressure relative to atmospheric pressure. Absolute pressure transmitters measure pressure relative to vacuum. Differential pressure transmitters measure the pressure difference between two points and are commonly used for flow, filter and level measurement.

Can Xinyi Instrument provide customized pressure transmitters?

Yes. Xinyi Instrument can support customized pressure ranges, process connections, output signals, cable length, display options and model selection for different industrial applications.