Product Overview

Monocrystalline Silicon Flange Pressure Transmitter uses a monocrystalline silicon sensor and flange-mounted diaphragm structure for accurate pressure measurement of liquids, gases, and steam. It is widely used in tanks, pipelines, reactors, and process vessels where direct process isolation and reliable pressure monitoring are required.

Key Features

Monocrystalline silicon sensing technology provides high measurement accuracy up to ±0.05%.
Dual compensation processing improves long-term stability and reduces temperature-related errors.
Flange-mounted diaphragm design enables direct installation on tanks, vessels, and pipelines.
HART communication capability supports remote configuration, diagnostics, and calibration.

Typical Applications

Storage tank pressure monitoring

Chemical reactor pressure measurement

Process vessel pressure control

Steam system pressure monitoring

Petrochemical process instrumentation

Water and wastewater treatment plants

Food and pharmaceutical process tanks

Oil and gas pipeline systems

Corrosive liquid pressure measurement

Industrial utility pressure monitoringIndustrial utility pressure monitoring

Technical Specifications

HNP30-AC Intelligent High Precision Single Crystal Silicon Pressure/Insert Bucket Flange Pressure Transmitter
Specific Parameters	Value / Description
Measurement Principle	The pressure transmitter utilizes a monocrystalline silicon sensor to convert pressure signals into electrical signals, which are then processed by a microprocessor with dual compensation technology. It communicates through the Hart protocol and is equipped with an external one-key reset function, achieving high-precision and interference-resistant pressure measurement.
Pressure type	Diaphragm type, immersion type
Measurement Medium	Gas, steam, liquid
Inaccuracy	±0.05%, ±0.075%, ±0.1% (including linearity, hysteresis, and repeatability from zero point)
Stability	±0.1%/3 years
Power Supply	10～36V DC (recommended 24V DC)
Display	LCD, OLED
Diaphragm	316L stainless steel, Hastelloy C, Monel alloy, tantalum, titanium, PTFE coating, special requirements
Filling Fluid	Silicone oil, fluorinated oil
	304 Stainless Steel, 316L Stainless Steel
Electrical Connection	M20*1.5 (standard), 1/2NPT internal thread
Medium Temperature	-40℃ ~85℃
Measure Temperature	-40℃~120℃
Output Signal	4~20mA, 4~20mA+Hart
Explosion-proof type	Flameproof, explosion-proof grade ExdⅡCT6, intrinsically safe, explosion-proof grade ExiaⅡCT6
Authentication	CE, ISO9001, SIL

OEM & Customization

Pressure range customization for specific process requirements.
Flange size and standard customization according to ANSI, DIN, JIS, or customer specifications.
Private label OEM service including logo marking, nameplate printing, and customized packaging.
Customized documentation support including manuals, labels, inspection reports, and certificates.

Certifications & Compliance

CE - Compliance with applicable European safety and EMC requirements.
ISO 9001 - Certified quality management system for manufacturing processes.
SIL - Supports functional safety requirements for industrial process applications.
Exd IIC T6 - Flameproof protection for hazardous areas.
Exia IIC T6 - Intrinsically safe protection for hazardous environments.
HART Protocol - Standardized digital communication for process instrumentation.

FAQ

Q: What is the working principle of a monocrystalline silicon flange pressure transmitter?

A: The monocrystalline silicon sensor converts process pressure into an electrical signal, which is digitally compensated and output as a standardized current signal.

Q: What is the difference between a flange pressure transmitter and a threaded pressure transmitter?

A: Flange-mounted models provide direct diaphragm isolation and are preferred for tanks, vessels, high-viscosity media, and corrosive applications.

Q: What documents can be supplied with shipments?

A: Available documents include calibration reports, inspection reports, operation manuals, material certificates, conformity certificates, and packing lists upon request.

Q: Are spare display modules and electronic boards available separately?

A: Yes. Key spare parts such as display modules, electronic assemblies, seals, and accessories can be supplied for maintenance and inventory planning.

Q: What is the recommended recalibration interval?

A: For most industrial applications, recalibration is recommended every 12 to 24 months, depending on operating conditions, process criticality, and site quality procedures.

HNP30-AC Intelligent High Precision Single Crystal Silicon Pressure/Insert Bucket Flange Pressure Transmitter
Specific Parameters	Value / Description
Measurement Principle	The pressure transmitter utilizes a monocrystalline silicon sensor to convert pressure signals into electrical signals, which are then processed by a microprocessor with dual compensation technology. It communicates through the Hart protocol and is equipped with an external one-key reset function, achieving high-precision and interference-resistant pressure measurement.
Pressure type	Diaphragm type, immersion type
Measurement Medium	Gas, steam, liquid
Inaccuracy	±0.05%, ±0.075%, ±0.1% (including linearity, hysteresis, and repeatability from zero point)
Stability	±0.1%/3 years
Power Supply	10～36V DC (recommended 24V DC)
Display	LCD, OLED
Diaphragm	316L stainless steel, Hastelloy C, Monel alloy, tantalum, titanium, PTFE coating, special requirements
Filling Fluid	Silicone oil, fluorinated oil
	304 Stainless Steel, 316L Stainless Steel
Electrical Connection	M20*1.5 (standard), 1/2NPT internal thread
Medium Temperature	-40℃ ~85℃
Measure Temperature	-40℃~120℃
Output Signal	4~20mA, 4~20mA+Hart
Explosion-proof type	Flameproof, explosion-proof grade ExdⅡCT6, intrinsically safe, explosion-proof grade ExiaⅡCT6
Authentication	CE, ISO9001, SIL

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