SI-1188 Explosion Proof Pressure Sensor

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SI-1188 Explosion Proof Pressure Sensor

Explosion Proof Pressure Sensor is a kind of pressure transmitter specially used in flammable and explosive occasions. SI-1188 Explosion Proof Pressure Sensor adopts an integrated all-welded structure, which meets the isolation and explosion-proof requirements after multiple stainless steel weldings. It is composed of a highly stable silicon piezoresistive pressure sensor and a high-performance dedicated amplifier circuit. High strength, small size, excellent anti-vibration performance, and can be used for a long time in harsh environments. Widely used in various explosion-proof places such as petroleum machinery, chemical machinery, pumps and compressors, electric power, boilers, natural gas, etc.

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Pressure Sensors

Features of Explosion Proof Pressure Sensor

  • All stainless steel, all welded construction.
  • High strength, anti-vibration.
  • Passed the explosion-proof certification of the explosion-proof electrical product quality supervision and inspection center.
  • Wide measuring range, can measure absolute pressure, gauge pressure and sealed reference pressure.
  • Good sealing, can work stably for a long time.
  • Advanced structure ensures product reliability,
  • Widely used in flammable and explosive occasions.

SI-1188 Explosion Proof Pressure Sensor Specifications

Measuring medium:Various liquids, gases or vapors compatible with 304, 316L stainless steel
Range:-100kPa…0～0.01…100MPa
Overload:1.5 times full scale pressure
Pressure type:Gauge or absolute or sealed gauge
Accuracy:±0.5%FS
Long-term stability:±0.2%FS/year
Zero temperature coefficient:±0.03%FS/°C (reference 25°C)
Full scale temperature coefficient:±0.03%FS/°C (reference 25°C)
Ambient temperature:-25~60℃
Medium temperature:-25~100℃
Storage temperature:-40~120℃
Power supply:5VDC, 24VDC
Output signal:Two-wire 4~20mA current or three-wire voltage
Insulation resistance:100MΩ, 500VDC
Shell protection:IP65
Electrical connections:Cable direct outlet, Hirschmann, M12×1 etc.
Explosion-proof mark:Ex ia IIC T6 Ga ；ExdⅡBT6

Shell: stainless steel 1Cr18Ni9Ti or 316L
Diaphragm: stainless steel 316L

Order Guide

SI-1188  Explosion Proof Pressure Sensor
Code Range
(0~X)KPa -100kPa…0-0.01…60MPa
Code Output Signal
B1 4-20mA
B2 0-10mA
B3 0-10V
B4 0-5V
B5 1-5V
B6 0.5-4.5V
Code Process Connection
P1 M20*1.5
P3 G1/4
P4 G1/2
K1 1.5 inch clamp connection
K2 2 inch clamp connection
Code Electrical connections
C1 Hirschman joint
C2 cable output
C3 Others
Code Structural materials
Diaphragm interface shell
M1 316L Stainless steel Stainless steel
M1A 316L 316L Stainless steel
M1B 316L 316L 316L
M2 titanium titanium titanium
M3 Tantalum customize customize
M4 Hastelloy C customize customize
MJ Sputtering
M8 TiSi-Sapphire
Code Additional functions
G Gauge pressure (default)
A Absolute pressure
S Sealed gauge pressure
d Ex d IIC T6
A Ex ia IIC T6 Ga 
F Thread flush membrane structure
V1 Power supply 24VDC
V5 Power supply 5VDC
SI-1188  (0-1)MPa B1 P1 C2  M1 SdV1

Learn More About Pressure Sensors

Explosion Proof Pressure Sensor refers to a type of pressure sensor that can be used in dangerous scenarios. Such as flammable and explosive scenes.

The technical principle of Explosion Proof (flameproof) Pressure Sensor allows dangerous gas to enter the flameproof enclosure, and explosion may occur in the enclosure.

But the shell must have sufficient strength. And each joint surface of the housing must have a sufficiently long engagement length and a sufficiently small gap. To ensure that the internal explosion will not pass through the flameproof joint surface and cause the external environment to explode.

Explosion Proof Pressure Sensor has a thick flameproof enclosure of the pressure transmitter, which is designed to withstand the explosion pressure of the internal explosive gas mixture exceeding 2MPa. Prevent the internal explosion from propagating to the external surrounding explosive mixture, thereby achieving explosion-proof performance.

Intrinsically safe pressure sensors, the explosion-proof mark is Ex dII C T4 Ga. Intrinsically safe pressure sensors equipment protection level and the relationship between hazardous locations and protection levels: equipment protection level (EPL)-Ga, hazardous locations-explosive gas atmosphere zone 0 , Protection level – very high.

The principle of Intrinsically safe pressure sensors explosion-proof technology, electric sparks and thermal effects are the main ignition sources that cause explosive dangerous gas explosions. Intrinsically safe is achieved by limiting the energy of the two possible ignition sources of electric sparks and thermal effects.

There are low ignition points for various explosive dangerous gases. When the energy of electric spark or thermal effect that may be generated under normal working and fault conditions is low, it will not ignite the corresponding explosive dangerous gases and cause an explosion.

The design of Intrinsically safe pressure sensors starts with limiting energy, and reliably limits the voltage and current in the circuit within an allowable range. In order to ensure that the pressure transmitter works normally or in the event of a fault such as short circuit or component damage. Will The spark or heat effect energy that may be generated by the connecting wires inside the equipment and exposed to potentially explosive atmospheres is limited to a level that cannot cause ignition. It does not cause explosions of dangerous gases that may exist around the pressure transmitter installation.

Explosive hazardous environments will inevitably form in the well-known production fields such as petroleum, chemical industry, and coal:
Under coal mines, about two-thirds of the area belongs to explosive hazardous areas;
About 60% to 80% of the areas in oil mining mines and refineries are explosive hazardous areas;
In the chemical industry, more than 80% of the production links belong to explosive hazardous places;
In recent years, explosion accidents of combustible dust such as metal processing, paint and food processing have occurred frequently, which has attracted people’s attention.

Sanitary pressure sensor, also known as Hygienic Pressure Transmitter. It is to ensure the hygiene and safety of food and medicine. Ensure that food and pharmaceuticals cannot come into contact with and mix with toxic, harmful, polluting substance components or substances that are not suitable for mixing through the contacting pressure transmitter. The materials, structure, performance, processing (such as welding, polishing, etc.), and cleaning treatment of pressure transmitters that are in direct contact with food and drugs have a series of hygienic requirements. Meeting these special requirements is the hygienic pressure transmitter / hygienic pressure sensor.

Hygienic pressure transmitters meet the following series of hygienic requirements. In terms of non-toxic and harmless requirements for materials. Including: selection of different grades of stainless steel materials (304L, 316L, 410, 409, 329) according to different conditions.

In terms of structure, the surface is required to be smooth and clean, without dead ends, not easy to accumulate dirt residues, not easy to pollute, easy to wash (quick-opening clamp interface is often used) and easy to sterilize and disinfect. In terms of anti-contamination and anti-pollution, strict sealing and isolation are required to prevent the entry and leakage of poisonous, harmful and pollutants, and high-temperature disinfection and sterilization.

Processing requires a certain degree of finish and weldability.

Maintenance requires suitable cleaning agents, easy cleaning of internal and external surfaces, convenient cleaning in place (CIP) and sterilization in place (SIP), etc.

Sanitary pressure transmitters are used in food and drug production equipment to directly contact food and drug raw materials and semi-finished products to measure pressure or liquid level. It is made of high-quality stainless steel and has an overall welded structure.

And meet strict sealing isolation performance and have the performance and conditions to withstand strict and sufficient high temperature sterilization or chemical sterilization. It is not easy to produce dead angles for sterilization and disinfection during installation and use. Meet the requirements of sterility and avoid contamination to ensure the safety of food and drug production.

If you cannot find an answer to your question in our Explosion Proof Pressure Sensors, you can always contact us and we will be with you shortly.

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More Featured Pressure Sensors

Sino-Inst is a manufacturer of Explosion Proof Pressure Sensors. We supply more than 10 types of Explosion Proof Pressure Sensors.

There are many types of pressure sensors, such as resistance strain gauge pressure sensors, semiconductor strain gauge pressure sensors, Silicon piezoresistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, resonant pressure sensors and capacitive sensors.

Explosion Proof Pressure Sensors adopts an integrated all-welded structure, which meets the isolation and explosion-proof requirements after repeated stainless steel welding. It is composed of a highly stable silicon piezoresistive pressure sensor and a high-performance dedicated amplifier circuit. High strength, small volume, excellent anti-vibration performance. And it has a mildew-proof and moisture-proof design, which can be used for a long time in harsh environments.

SI-1188 Explosion Proof Pressure Sensors are widely used in various explosion-proof places such as petroleum machinery, chemical machinery, pumps and compressors, electric power, boilers, and natural gas.

Sino-Inst has provided pressure measurement solutions to customers for many years. Our pressure sensor, made in China. Widely exported to the United States, Britain, Germany, South Africa, Norway and other countries.

If you need Explosion Proof Pressure Sensors, but have technical questions, please feel free to contact our sales engineers.

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    SI-1188 Explosion Proof Pressure Sensor | Exd-Ex ia

    Explosion Proof Pressure Sensor is a kind of pressure transmitter specially used in flammable and explosive occasions. SI-1188 Explosion Proof Pressure Sensor adopts an integrated all-welded structure, which meets the isolation and explosion-proof requirements after multiple stainless steel weldings. It is composed of a highly stable silicon piezoresistive pressure sensor and a high-performance dedicated amplifier circuit. High strength, small size, excellent anti-vibration performance, and can be used for a long time in harsh environments. Widely used in various explosion-proof places such as petroleum machinery, chemical machinery, pumps and compressors, electric power, boilers, natural gas, etc.

    Product SKU: SI-1188 Explosion Proof Pressure Sensor

    Product Brand: Sino-Inst

    Product Currency: USD

    Product Price: 115

    Price Valid Until: 2029-09-09

    Product In-Stock: InStock

    Editor's Rating:
    5