Key Points for Selecting Industrial Pressure Sensors

  Key Points for Selecting Industrial Pressure Sensors  

(1)    Measured Medium Properties

(2)    Pressure Range

(3)    Operating Mode

(4)    Operating Temperature Range

(5)    Accuracy

(6)    Output Signal

(7)    Mechanical Connection

(8)    Electrical Connection

(9)    Special Requirements 

Below are detailed recommendations: 

(1) Measured Medium Properties

- Gas or Liquid

- Corrosive media: Use stainless steel material. 

- Food and pharmaceutical industries: The diaphragm is used to separate the medium from the pressure gauge, the material of the diaphragm can be chosen from various options, such as tantalum, titanium, or Teflon-lined.

(2) Pressure Range

   - Determine the working pressure range (e.g., low-pressure reactors in kPa vs. high-pressure hydraulic systems in MPa). 

   - Recommended range: Select a sensor with a range covering 1/3 to 2/3 of the actual pressure to ensure linearity and safety. 

(3) Operating Mode

   - Gauge pressure (relative to atmospheric pressure). 

   - Absolute pressure (referenced to vacuum). 

   - Differential pressure (difference between two points). 

(4) Operating Temperature Range

  - Standard models: -40°C to 125°C 

  - High-temperature environments (e.g., metallurgy, engine compartments): Requires sensors rated for 750°C or higher. 

(5) Accuracy Class

   - General industrial applications: ±0.5% to ±1% FS (Full Scale). 

   - Precision machine: Requires high-accuracy sensors (±0.1% FS or better). 

(6) Output Signal

  - Analog signals (4-20mA / 0-5V): Suitable for long-distance transmission. 

- Digital signals (e.g., RS485): Better noise immunity. 

(7) Mechanical Connection

- G1/4-A DIN 3852(male),

- 1/4"-18 NPT (male)

- G3/8 DIN 3852(male)

(8) Electrical Connection

- Flying Lead (IP67)

- M12×1, 4-Pole, Male (IP67)

- Packard Metri Pack Series 150, 3-Pole Male (IP65)

- DIN 43650 Male (IP65),   

(9) Special Requirements Configuration

- Response Time

- Dynamic applications (e.g., hydraulic braking systems): Requires <1ms response time. 

  - Standard control applications: Typically, around 100ms. 

- Certifications & Safety

  - Oil & gas extraction: Requires explosion-proof certification (Ex ia IIC T6). 

  - Mining equipment: Needs flame-retardant cables

 ZYZL INSTRUMENTS offer total pressure measurement solutions, products include MEMS pressure sensors, glass micro-melting pressure sensors, sputtering film pressure sensors, piezoelectric pressure sensors, capacitive pressure sensors, piezoresistive pressure sensors and differential pressure transmitters by customer' s various applications:

Applications include petrochemicals, chemicals, water treatment, pharmaceuticals, food processing industry, environmental protection industries, paper industry, air conditioning, power systems, pipping engineering, hydraulic machinery, also widely applied in the field of agriculture.