Product Overview

Vacuum Absolute Pressure Transmitter is designed for accurate measurement of absolute vacuum pressure in vacuum systems and process equipment. Utilizing MEMS dual-silicon sensing technology, it provides stable analog or digital output for vacuum monitoring, automation control, semiconductor processing, laboratory systems, and industrial vacuum applications.

Key Features

MEMS dual-silicon sensing technology delivers high measurement stability and fast response under vacuum conditions.
Accuracy up to ±0.05% FS enables precise vacuum monitoring and process control.
10× overpressure capability enhances sensor protection against unexpected pressure surges.
SUS304 or SUS316L stainless steel housing provides corrosion resistance for demanding industrial environments.

Typical Applications

Vacuum coating equipment

Semiconductor processing systems

Industrial vacuum pumps

Vacuum conveying systems

Process automation control systems

Vacuum furnaces

Laboratory vacuum chambers

Leak detection systems

Pharmaceutical vacuum drying equipment

Food vacuum packaging lines

Technical Specifications

HNP50 Vacuum Manometer
Specific Parameters	Value / Description
Measurement Principle	The HNP50 vacuum pressure gauge utilizes MEMS dual silicon technology, coupled with high-precision digital circuit boards, to achieve accurate measurement of vacuum levels and stable output of data. The 304/316L stainless steel housing is suitable for harsh operating conditions and can display data through secondary instruments, meeting the needs of automated precision measurement and control for vacuum equipment.
Measurement Range (Absolute Pressure)	0.1~1000 KPa, 0.001~10 KPa, 0.001~20 KPa, 0.001~100 KPa, capable of withstanding 10 times the maximum overload capacity
Input Voltage	24V
Housing Material	SUS304, SUS316 stainless steel or customer-defined material
Accuracy Range	1%FS, 0.5%FS, 0.25%FS, 0.1%FS, 0.05%FS
Range Scope	0~1 Torr, 0~10 Torr, 0~100 Torr, 0~1000 Torr, custom range
Output Cable	2-core, 4-core cable (shielded cable requires special instructions)
Process Interface	KF16, KF25 (other interface types can be customized)
Electrical Connection	5-pin terminal block, 9-pin D-Sub, 15-pin D-Sub, direct output custom electrical connection
Operating Temperature	-20～80°C
Output Signal	4-20mA, RS485
Certification	CE, ISO9001, SIL

OEM & Customization

Custom vacuum measurement ranges and calibration points.

Customized electrical connectors and wiring configurations.

Optional housing materials for specific media compatibility.

Private label branding, logo marking, and model coding.

Alternative vacuum flanges and process connections.

Custom cable lengths and shielded cable options.

Factory calibration certificates and test reports.

Customized packaging, manuals, and OEM documentation.

Certifications & Compliance

CE - Compliance with applicable European safety, EMC, and environmental requirements.
ISO 9001 - Manufacturing quality management system certification.
SIL - Functional safety compliance for safety-related industrial applications.
RoHS (Optional) - Restriction of hazardous substances in electronic components.
Material Traceability (Optional) - Documentation for regulated industrial projects.

FAQ

Q: What is the difference between absolute pressure and gauge pressure measurement?

A: Absolute pressure is referenced to a perfect vacuum (0 Pa absolute), while gauge pressure is referenced to atmospheric pressure. Vacuum systems typically require absolute pressure measurement.

Q: Which vacuum units are available?

A: Measurements can be configured in kPa absolute or Torr ranges depending on application requirements.

Q: Can the transmitter operate in deep vacuum applications?

A: Yes. Models are available for ranges as low as 0.001 kPa and 0–1 Torr, suitable for high-vacuum monitoring.

Q: What output signal should I choose: 4–20 mA or RS485?

A: 4–20 mA is commonly used for industrial control systems, while RS485 is suitable for digital communication and multi-device networking.

Q: Is recalibration required after installation?

A: Periodic recalibration is recommended based on operating conditions, accuracy requirements, and internal quality procedures to maintain measurement performance.

HNP50 Vacuum Manometer
Specific Parameters	Value / Description
Measurement Principle	The HNP50 vacuum pressure gauge utilizes MEMS dual silicon technology, coupled with high-precision digital circuit boards, to achieve accurate measurement of vacuum levels and stable output of data. The 304/316L stainless steel housing is suitable for harsh operating conditions and can display data through secondary instruments, meeting the needs of automated precision measurement and control for vacuum equipment.
Measurement Range (Absolute Pressure)	0.1~1000 KPa, 0.001~10 KPa, 0.001~20 KPa, 0.001~100 KPa, capable of withstanding 10 times the maximum overload capacity
Input Voltage	24V
Housing Material	SUS304, SUS316 stainless steel or customer-defined material
Accuracy Range	1%FS, 0.5%FS, 0.25%FS, 0.1%FS, 0.05%FS
Range Scope	0~1 Torr, 0~10 Torr, 0~100 Torr, 0~1000 Torr, custom range
Output Cable	2-core, 4-core cable (shielded cable requires special instructions)
Process Interface	KF16, KF25 (other interface types can be customized)
Electrical Connection	5-pin terminal block, 9-pin D-Sub, 15-pin D-Sub, direct output custom electrical connection
Operating Temperature	-20～80°C
Output Signal	4-20mA, RS485
Certification	CE, ISO9001, SIL

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