SI-350 Sanitary Pressure Transmitter

Sanitary Pressure Transmitter, also called tri clamp pressure transmitter,

is the pressure transducer with the flush diaphragm (flat membrane) as the pressure sensor.

Sino-Instrument can offer flange sanitary pressure transmitter, diaphragm pressure transducer,

and Clamp type liquid level transmitter for the differential pressure.

No Liquid Fill Diaphragm, Sanitary Clamp Fitting

The SI-350 Sanitary Pressure Transmitter uses a flat membrane,

to directly sense the pressure signal,

a diffused silicon pressure core as a sensitive component,

and a standard silicone oil or olive oil as the pressure transfer medium.

The measurement end is made of 316L stainless steel material,

and specially welded and treated.

Compact structure, corrosion resistance, vibration resistance and wide temperature compensation.

SI-350 Sanitary Pressure Transmitter type directly feels pressure,

due to the exposed end of the threaded diaphragm,

which can prevent scaling, unsanitary and viscous pressure blockage.

It is especially suitable for pressure measurement of viscous fluids,

with hygienic requirements in medical and food industries.

Scale, blockage, cleanliness and other issues.

Widely used in the hygienic industry of food, medicine, brewing, etc.

and the pressure test where the measuring medium may be scaled.

Features of SI-350 Sanitary Pressure Transmitter

SI-350 Sanitary Pressure Transmitter
SI-350 Sanitary Pressure Transmitter
  • Pressure interface with 316L flat diaphragm structure
  • Hygienic, anti-fouling
  • Wide measuring range for absolute pressure, gauge pressure and sealed reference pressure
  • Good sealing and stable work for a long time
  • With heat sink, high temperature media application performance
  • Output signal can be selected, can be customized according to customer requirements

Specifications of SI-350 Sanitary Pressure Transmitter

350-02Sanitary pressure transmitter, range 0- 10kPa, 300%FS overpressure, 2″ sanitary clamp connection.
350-101Sanitary pressure transmitter, range 0- 20kPa, 300%FS overpressure, 1-1/2″ sanitary clamp connection.
350-12Sanitary pressure transmitter, range 0- 400kPa, 200%FS overpressure, 2″ sanitary clamp connection.
350-22Sanitary pressure transmitter, range 0- 600kPa, 200%FS overpressure, 2″ sanitary clamp connection.
350-32Sanitary pressure transmitter, range 0-1MPa, 200%FS overpressure, 2″ sanitary clamp connection.
350-42Sanitary pressure transmitter, range 0-1.6MPa, 200%FS overpressure, 2″ sanitary clamp connection.
350-52Sanitary pressure transmitter, range 0-2.5MPa, 200%FS overpressure, 2″ sanitary clamp connection.
350-62Sanitary pressure transmitter, range 0-6MPa, 150%FS overpressure, 2″ sanitary clamp connection.
350-72Sanitary pressure transmitter, range 0-10MPa, 150%FS overpressure, 2″ sanitary clamp connection.

Range range


Pressure type

gauge pressure, absolute pressure, sealing pressure

Power output

4 to 20 mA (12 to 30 VDC)
0 to 5V, 1 to 5V, 0.5 to 4.5V, 0 to 10V (12 to 24VDC)


0.5% FS

Hysteresis and repeatability


Temperature drift

1.5% FS (@-20 °C ~ 85 °C)

Response time

≤ 1ms (up to 90% FS)
Service life ≥10x 10^6
pressure cycle

Working temperature

-20 ° C ~ 85 ° C

Storage temperature

-40 ° C ~ 85 ° C

Medium temperature

-40~85°C (without heat sink)
-40~150°C (three heat sinks), -40°C~250°C (five heat sinks)

Insulation resistance


Vibration resistance

Sinusoidal: 20g, 25Hz~2kHz; IEC 60068-2-6
Random: 7.5grms, 5Hz ~ 1kHz; IEC 60068-2-64

Protection level


Media compatible

with a variety of media compatible with 316L stainless steel

Explosion-proof grade

Intrinsically safe explosion-proof ExiaIICT6

Applications of Sanitary Pressure Transmitter

Ideal for applications where sanitary conditions are of high priority (i.e. dairy, food processing, pharmaceutical, etc.)

Medical and health, food, wine, dairy, beverages, etc. thick and easy to block, high hygienic requirements, easy to clean occasions.

Environmentally friendly chemical coatings, polyurethane equipment, paint inspection systems, etc.

SI-350 Sanitary Pressure Transmitter 6
  • Sanitary process applications
  • Food and beverage processing
  • Water processing
  • Dairy processing
  • Pharmaceutical processing

Drawing of SI-350 Sanitary Pressure Transmitter

The Series SI-350 Sanitary Pressure Transmitter is designed to meet 3A standards,

for applications in food, dairy, beverage and pharmaceutical processing,

liquid level control, and sanitary pipelines.

The unit is fully sealed to withstand high-pressure wash-down in Clean-in-Place (CIP),

and Sterilize-in-Place (SIP) installations.

The Series 350 is designed with a unique,

no liquid fill diaphragm and a Sanitary Clamp pressure fitting for easy installation,

with negligible clamping effect.

A conduit fitting, shielded cable with vent tube,

and sealed screws for zero and span adjustment combine,

to make the Series 350 completely watertight.

Most of our industrial pressure transmitter can be customized into a hygienic type

Pressure Transducer 4-20mA/Voltage

SI-300 Pressure Transducer 4-20mA/Voltage
SI-300 Pressure Transducer 4-20mA/Voltage

The SI-300 4-20mA/ Voltage Pressure Transducer,

also called pressure transmitter 4-20mA,

is a pressure sensor with 20ma/Voltage output.

SI-300 4-20mA/ Voltage Pressure Transducer can be OEM as differential pressure, explosion-proof,

or sanitary, just as you require.

Sanitary Bimetal Thermometers


Sanitary Bimetal Thermometers also called the sanitary thermometer,

or tri-clamp thermometer.

Sino-Instrument’s Sanitary Bimetal Thermometers

are specially designed for direct insertion into sanitary process applications

when a standard thermowell is not specified,

or the process environment is not exposed to pressure. 

Sanitary flow meter

SI-LWGY Sanitary turbine flow meter
SI-LWGY Sanitary turbine flow meter

Sanitary Flow Meter, also called sanitary turbine flow meter or Hygienic turbine flowmeter.

The Sino-Instrument sanitary turbine flow meter,

food grade flow meter,

provides accuracy, versatility, and economy,

in measuring a wide variety of food, beverage and pharmaceutical products.

All of Sino-Inst pressure trasmitters can work with the AMS TREX!

You may like: SI-3141 Liquid mass flow meter

Sino-Instrument offers over 10 Sanitary Pressure Transmitter.

About 50% of these are 4-20ma pressure transmitters, 40% are Differential Pressure Gauge,

and 20% are Diaphragm Seal Pressure transmitters,
20% are 4-20ma pressure transducer wiring diagram.

A wide variety of  Sanitary Pressure Transmitter options are available to you, such as free samples, paid samples.

Sino-Instrument is a globally recognized supplier and manufacturer of 
Sanitary Pressure Transmitter, located in China.

The top supplying country is China (Mainland), which supply 100% of 
Sanitary Pressure Transmitter respectively. 

Sino-Instrument sells through a mature distribution network that reaches all 50 states and 30 countries worldwide.

Sanitary Pressure Transmitter products are most popular in Domestic Market, Southeast Asia, and Mid East. 

You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

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SI-350 Sanitary Pressure Transmitter
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