1, Overview
The working principle of TXK explosion-proof pressure controller is mainly based on the elastic deformation of test components (such as diaphragms), which drives functional components (such as micro switches) to produce rapid switch jumping actions through this deformation. Specifically, when the pressure of the measured (controlled) medium is applied to the testing element, it will cause the free end of the diaphragm to produce corresponding elastic displacement. This displacement will then drive the button (push rod) in the micro switch connected to the pipe end to produce corresponding actions. When the pressure reaches the set control value, the switch contacts will switch, causing the circuit in the control system to disconnect or connect, thereby achieving the purpose of automatic control and signaling.
TXK explosion-proof pressure controller usually consists of a measurement system, control device, adjustment mechanism, housing, plug socket, etc. The diaphragm in the measurement system senses pressure changes through its elastic deformation, while the micro switch in the control device quickly responds to this pressure signal and performs circuit on/off operations. This design enables the explosion-proof pressure controller to operate stably in various industrial environments, especially in applications that require high reliability and safety.
2, Technical performance
| Working viscosity | <1 × 10－3m2/s | Medium temperature | 0～80℃ |
| Switching element | microswitch | Anti-Vibration Performance | 20m/s2 |
| Dust explosion-proof level | Exdb Ⅱ CT4～T6 Gb | Explosion proof certificate number | GYB24.2900X |
| Degrees of protection provided by enclosure | IP66(Compliant with DIN40050 and equivalent to IP66 in GB4208) | Repeatability error | 0.5% or 1% |
| Ambient temperature | -40℃~60℃ | Contact capacity | AC 220V 6A(Resistive) |
3, Specifications
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Adjustment range of pressure setting value
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Switching difference not greater than
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**Allowable pressure (Mpa)
| External dimensions |
Switching frequency/minute
| Membrane material |
Internal thread of interface
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| -100~0KPa | 2KPa | 1.3 | 03 | 30 | Stainless steel or polyimide | NPT1/4 |
| -100~ 100KPa | 2KPa | 1.3 | 02 | 30 | Stainless steel or polyimide | NPT1/4 |
| 0~ 100KPa | 2KPa | 1.3 | 03 | 30 | Stainless steel or polyimide | NPT1/4 |
| 5~ 170KPa | 2KPa | 1.3 | 02 | 30 | Stainless steel or polyimide | NPT1/4 |
| 5~210KPa | 4.5KPa | 1.3 | 01 | 30 | Stainless steel or polyimide | NPT1/4 |
| 10~350KPa | 3KPa | 1.3 | 02 | 30 | Stainless steel or polyimide | NPT1/4 |
| 20~700KPa | 12KPa | 5 | 01 | 30 | Stainless steel or polyimide | NPT1/4 |
| 0.15~ 1.2MPa | 0.02MPa | 5 | 01 | 30 | Stainless steel or polyimide | NPT1/4 |
| 0.25~2.5MPa | 0.04MPa | 5 | 01 | 30 | Stainless steel or polyimide | NPT1/4 |
| 0.37~3.7MPa | 0.08MPa | 6 | 01 | 30 | Stainless steel or polyimide | NPT1/4 |
| 0.7~7MPa | 0. 12MPa | 9 | 01 | 30 | Stainless steel or polyimide | NPT1/4 |
| 1.2~ 12MPa | 0. 15MPa | 17.5 | 01 | 30 | Stainless steel or polyimide | NPT1/4 |
| 3.5~27.5MPa | 1MPa | 34 | 01 | 30 | Stainless steel or polyimide | NPT1/4 |
4, Selection Table
| TXK - □ □ - □ - □ - □ 1 2 3 4 5 |
| 1. Product Form |
| 01 | convention | 02 | double-contact | 03 | EEx d |
| 04 | Lower differential pressure | 05 | Upper and lower differential pressure | 06 | High hydrostatic pressure |
| 07 | furnace |
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| 2. Shell |
| NN | Regular style | RN | Dual contact model | LC | Ordinary explosion-proof model |
| B | Explosion proof model with small viewing window | AL | Furnace shell |
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| 3. Diaphragm type |
| 01 | poly | 02 | stainless steel | 03 | rubber |
| 4. Connecting thread (customizable as needed) |
| 01 | NPT1/4 内 |
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| 5. Range | Refer to the range comparison table |
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Selection example: TXK-03LC-02-01-005
TXK explosion-proof controller, product form: explosion-proof, shell: ordinary explosion-proof type, diaphragm form: stainless steel, connection thread: NPT1/4 internal, range: 0.25-2.5MPa.
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Range comparison table
| code | range | notes | code | range | notes |
| 001 | 3.5-27.5MPa | Conventional pressure | 002 | 1.2-12MPa | Conventional pressure |
| 003 | 0.7-7MPa | Conventional pressure | 004 | 0.37-3.7MPa | Conventional pressure |
| 005 | 0.25-2.5MPa | Conventional pressure | 006 | 0.15-1.2MPa | Conventional pressure |
| 007 | 20-700KPa | Conventional pressure | 008 | 10-350KPa | Conventional pressure |
| 009 | 5-210KPa | Conventional pressure | 010 | 5-170KPa | Conventional pressure |
| 011 | 0-100KPa | Conventional pressure | 012 | ﹣100-0KPa | Conventional pressure |
| 013 | ﹣100-100KPa | Conventional pressure | 014 | 25KPa | High hydrostatic pressure |
| 015 | 0-60KPa | Lower differential pressure | 016 | 20-200KPa | Lower differential pressure |
| 017 | 50-500KPa | Lower differential pressure | 018 | ﹣0.5-0.5KPa | Furnace differential pressure |
| 019 | ﹣3-3KPa | Furnace differential pressure | 020 | ﹣6-6KPa | Furnace differential pressure |
| 021 | ﹣12-12KPa | Furnace differential pressure |
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5, Debugging method and switch wiring diagram
Return the adjusting nut to a state of basic weakness, connect the C, NO, NC wires of the switch to the signal light. Observe the status of the signal light, connect the signal light to a green light (C is the common terminal, and when C and NO are connected at the factory, the green light will turn on), and adjust the adjusting nut up and down according to the set point indicator to set it to the desired set point. (The downward pressure increases, the upward pressure decreases)
6, Appearance and installation dimensions
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Q: Could you offer the free samples ?
A: Yeah, but it depends products, Pls contact us ina@pneuhydr.com or whatsapp 0086 15168536055
Q: What ' s your business scope ?
A: Our business scope is service of exporter automation parts with full container, and sell air cylinder , air source treatment , solenoid valve , air valve, motorize valve , Brass valve, hydraulic valve, hydraulic cylinder, air and oil fitting, pressure gauge etc .
Q: What types of products you can make ?
A: We can make many kinds of stainless steel, brass ,aluminum materials processing .like high pressure Valve / solenoid valve / electric valve / water valve/pneumatic valve/air cylinder/hydraulic valve/hydraulic accumulator products and so on .
Q: Can the product be made with our logo and brand ?
A: Yes , of course , we can make . we are OEM supplier for years and professional to make . But you need give us the authorization if it is possible .
Q:Can you provide original famous pneumatic and hydraulic,instruments brand goods ?
A: Yes,We can supply like Festo,Smc,Ckd,Burket,Hydac,Rexroth,Siemens,Rosemount,Marsh ,Endress+Hauser etc.
Q: Is there a warranty available?
A: Yes, normally products is one year quality guarantee.
Q: Is the connector in British or Metric system? What is the difference between PT, NPT, and G threads?
A: The G thread is cylindrical and does not seal itself, requiring additional gaskets to prevent leakage. PT and NPT are conical, and the internal and external threads become tighter and tighter when tightened. Sealing is achieved through the deformation of the threads, and sealant or tape is usually used in conjunction to enhance the sealing effect
G-thread is a cylindrical straight pipe used for non sealed connections; PT thread is a conical tube that relies on the deformation and sealing of the thread itself; NPT is also a conical tube with a tooth profile angle of 60 degrees, mainly used in North America
Q: How to convert pressure units: MPa, bar, psi, kg/cm ²?
A: 1MPa=10bar≈145psi≈10kg
Q:What usually causes the burnout of solenoid valve coils?
A:Incorrect voltage and hz, frequent switching, pilot head entering liquid,valve core and spring problem,environment hot,heavy vibration etc.
Q: What should be noted for pneumatic components in high temperature or extremely cold environments?
| Focus Point | High Temperature Environment Countermeasures | Extreme Cold Environment Countermeasures |
| Seals | Fluororubber, PTFE | Low-temperature nitrile, silicone rubber, polyurethane |
| Lubrication | High-temperature synthetic grease (low volatility) | Low-temperature grease (low pour point, low viscosity) |
| Air Supply Treatment | Strengthen cooling, efficient water removal | Ultra-low dew point drying (refrigeration + adsorption type), heat tracing |
| Metal Components | Reserve expansion clearance | Select materials with low-temperature toughness, prevent leakage due to cold shrinkage |
| Control Components | High heat-resistant grade coils, heat dissipation, low power consumption | Install insulation boxes, local heating, prevent cold condensation |
| Installation | Keep away from heat sources, add heat insulation plates | Avoid exposure to wind and snow, wrap with thermal insulation materials |
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