Hongnuo (shenyang) General Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of monocrystalline silicon sanitary type pressure transmitter in China. Welcome to buy high quality monocrystalline silicon sanitary type pressure transmitter at competitive price from our factory. We also accept customized orders.

Products Description

Parameter	Specification
Filling liquid:	Sanitary Oil
Flow Range：	Stainless steel 304, 316L
Transmitter Housing:	Stainless steel
Measurement Range:	0～10～40KPa, 0～40～100KPa, 0～100～400KPa, 0～400～2000KPa, custom
Output Signal	4-20mA, 4-20mA+Hart

Please see the Specifications for more details.

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Typical Applications

Monocrystalline Silicon Sanitary Type Pressure Transmitter

Verification of End-of-Line Pressure in CIP/SIP Systems
Transmitters installed at the end of condensate/drain lines-whether at cleaning stations or sterilization units-verify that cleaning pressure and temperature meet recipe specifications. The HNP40 features a warm-up time of less than 15 seconds and an adjustable response time (0.1–1.6 seconds), enabling it to rapidly detect pressure fluctuations during process transitions so the system can assess the adequacy of the cleaning.

Level Measurement for High-Viscosity or Crystallizing Media
Media such as jams, fruit juice concentrates, honey, and syrups exhibit poor flow characteristics at ambient temperatures; using standard impulse lines or conventional flange connections for pressure sensing often leads to clogging. Flush-diaphragm sensors mounted directly on the tank bottom or sidewall-with the sensing face flush against the inner tank wall-eliminate impulse lines and dead zones where fluid might accumulate, ensuring complete drainage during cleaning. For applications requiring level interlocks or inventory monitoring, the 4–20 mA HART output allows integration with DCS or PLC systems, enabling the conversion of readings into level or volume data, including density compensation.

Why Choose our Product ?

This transmitter's full mechanical layout eliminates dead spaces entirely. Every wetted component meets EHEDG and FDA criteria, and handles 150 °C high-temperature CIP/SIP sterilization cycles without issue. This design is essential for pharma and food production lines, as it stops the transmitter from harbouring bacteria or trapping process residues. All gaskets, bonding adhesives and fill fluids carry non-toxic certification-this goes further than just meeting basic material specification standards.

We mount the single-crystal silicon sensing element at the top of the metal housing. Mechanical and thermal isolation separates it fully from process media, so the sensing core never takes direct thermal loads during high-heat sterilisation. Glass-to-metal hermetic feedthroughs deliver high dielectric strength and native surge voltage tolerance, so performance does not depend entirely on external protection circuits.

Overall accuracy is specified at ±0.1 %, covering linearity, hysteresis and repeatability as a combined figure-this is not just ideal-lab linearity performance alone. Long-term stability holds ±0.2 % across three years, with temperature drift limited to ±0.05 % URL per 10 °C, backed by on-board temperature compensation. Operators avoid frequent recalibration even in widely fluctuating thermal environments, cutting maintenance downtime accordingly.

HART communication is integrated for remote setup and data retrieval. There is no need to access high tank installations via ladders or remove enclosures just to perform zero trim. Wide turndown and adjustable zero points let users perfectly match the instrument to actual process spans without sacrificing measurement precision. Fixed output limits and dedicated fault alarm behaviour are implemented: the transmitter defaults to a 3.8 mA signal upon internal failure, letting plant control systems flag faults instantly.

Key Advantages

Hygienic Construction ：Zero dead space throughout the unit. All wetted surfaces and fill fluid satisfy FDA and EHEDG hygiene standards, rated for 150°C SIP steam sterilization cycles.

Thermally Isolated Sensor Layout ：The monocrystalline silicon sensor is fully separated from the diaphragm via mechanical and thermal isolation. This shields the sensing chip from thermal spikes during sterilization and cuts temperature drift.

Precision & Long-Term Stability：Combined overall accuracy of ±0.1% - accounts for linearity, hysteresis and repeatability all together. Three-year drift stability held to ±0.2%, with temperature influence capped at ±0.05% URL per 10°C, supported by onboard temperature compensation.

Versatile Process Matching

Sanitary diaphragm pressure transmitters

HNP40-A Sanitary Intelligent High Precision Monocrystalline Silicon Pressure, Level Transmitter
Specific Parameters	Value / Description
Measurement Principle	This product uses a high-precision monocrystalline silicon pressure sensor with top installation, away from the medium to achieve mechanical and thermal isolation; glass sintered leads improve electrical insulation, microprocessor and digital isolation enhance anti-interference, built-in temperature sensor digital compensation, supports HART protocol communication, high accuracy, and strong stability.
Transmitter Type	Intelligent Hygienic Flat Membrane Pressure Transmitter/Intelligent Hygienic Insert Tube Pressure Transmitter
Measurement Medium	Gas, vapor, liquid
Inaccuracy	±0.1% (including linearity, hysteresis, and repeatability from zero point)
Stability	±0.2%/3 years
Power	10 to 36V DC (recommended 24V DC)
Diaphragm	316L Stainless Steel, Hastelloy C, Monel Alloy, Tantalum, Titanium, Fluorocarbon Spray, Special Requirements
Process Flange	Stainless steel 304, 316L
Filling liquid	Sanitary Oil
Transmitter Housing	Stainless steel
Housing Seal	Nitrile Rubber
Tube Material	304 Stainless Steel, 316L Stainless Steel
Measurement Range	0～10～40KPa, 0～40～100KPa, 0～100～400KPa, 0～400～2000KPa, custom
Medium Temperature Range	-20℃ to 150℃
Ambient Temperature Range	-20℃ to 85℃
Electrical Connection	M12 Connector Wiring 2 meters, user-specified
Output	4~20mA, 4~20mA+Hart
Certification	CE, ISO9001, SIL