19mm Mini 4-20mA Output Silicon Pressure Sensor For OEM Transmitter

HT19-4-20 Pressure Sensor

Introduction of silicon pressure sensor:

HT19-4-20 Silicon Piezoresistive Pressure Sensor

The HT19-4-20 is a high-stability piezoresistive pressure sensor featuring a precision diffused silicon sensing element. It accurately measures liquid and gas pressure by transmitting force through a silicon diaphragm and isolating the medium via a silicone oil-filled isolation diaphragm.

Equipped with a sophisticated amplifier circuit, it delivers a standardized 0.5–4.5VDC or 4–20mA output for seamless integration. Its robust design and versatility make it ideal for applications such as air compressors, refrigeration systems, and HVAC equipment.

Key Features:

• High long-term stability
• Media isolation for corrosive or sensitive environments
• Industry-standard output signals
• Reliable performance in demanding industrial applications

Applications of silicon pressure sensor:

• Suitable for measuring non-corrosive gas and liquid pressure with 316L stainless steel compatibility.
• Applied in various industrial process sites, including petroleum, chemical, metallurgy, power, and hydrology
• Used in marine and aviation industries.
• Suitable for hydraulic and pneumatic control systems
• Utilized in process control applications.

Performance Parameters
Measurement Range	-100kPa…0kPa ～ 10kPa…100MPa
Pressure Type	Gauge Pressure, Absolute Pressure, Sealed Pressure
Overload	≤ 1.5 times of the rated range
Accuracy @ 25℃	±0.25% (Typical) ±0.5% (Maximum)
Repeatability& Hysteresis	0.02%F.S(Typ.) 0.05%F.S(Max.)
Long-Term Stability	±0.1%F.S/Year(Typ.) ±0.2%F.S/Year(Max.)

Performance Parameters (Continued)
Zero Point Temperature Drift	±0.02%F.S/℃(≤100KPa) ±0.01%F.S/℃(＞100KPa)
Full Scale Temperature Drift	±0.02%F.S/℃(≤100KPa) ±0.01%F.S/℃(＞100KPa)
Compensation Temperature	0-70℃(≤10MPa,customizable)
Operating Temperature	0℃~70℃
Storage Temperature	-40℃~120℃
Vibration	10g,55Hz ～ 2kHz
Diaphragm Material	316L
Insulation Resistance	100MΩ 100VDC
Weight	30g

Construction of silicon pressure sensor:

Output	Power	Output
0.5～4.5V 4-20mA	5VDC / 12-32Vdc	3 wire / 2 wire

1. HT19-4-20 Pressure Sensor Assembly & Handling Guidelines

2. Core-to-Housing Fit

   1. Ensure proper alignment between the core and transmitter housing to maintain required airtightness.

3. Housing Assembly

   1. Keep the housing vertically aligned during assembly.

   2. Apply uniform pressure to prevent jamming or damage to the compensation plate.

4. Material Compatibility

   1. If the measured medium is incompatible with the 316L housing or core diaphragm, specify this when ordering for customized solutions.

5. Diaphragm Protection

   1. Avoid contact with hands or sharp objects to prevent deformation or puncture of the sensing diaphragm.

6. Gauge Pressure Core Venting

   1. Keep the pressure port open to the atmosphere.

   2. Prevent moisture, steam, or corrosive media from entering the negative pressure chamber.

7. Pin Lead Modifications

   1. Refer to the actual core label for correct wiring if pin leads are altered.

   Baoji Hengtong Electronics Co., Ltd., located in the renowned "The Western Sensor Capital of China" - Baoji city, was established in 1994. As a leading domestic manufacturer of pressure sensors and pressure transmitter, the company has been dedicated to the production of pressure sensors for nearly 30 years. It is also one of the earliest high-tech enterprises in China that integrates research, production, and sales of pressure sensors. With a factory area of over 7,000 square meters, the company has more than 150 employees and an annual production capacity of 300,000 pressure sensors. It has sales teams in various cities such as Xi'an, Beijing, and Guangzhou, and its products are exported to more than 50 countries and regions.

   Adhering to the development philosophy of "guided by technological innovation," the company is committed to researching and developing advanced and high-quality pressure sensor products to meet the ever-changing market demands. Additionally, the company upholds the business principle of "meticulous customization, creating infinite value," by thoroughly understanding the needs of each customer. Through meticulous customized services and products, the company aims to create boundless value and establish long-lasting cooperative relationships with its customers.