1, Overview
TXK differential pressure switches can be widely used in large, medium, and small air-cooled or water-cooled chillers using plate heat exchangers, sleeve heat exchangers, and shell and tube heat exchangers for water flow control and monitoring of pump and water filter status. It is also widely used in gas detection, non corrosive media, measuring absolute pressure, and gauge pressure, and is widely used in air conditioning and clean rooms, fan and filter blowing control, fluid and liquid level control.
2, Technical performance
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Working viscosity
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1x10-3m2/s
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|
Switching element
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microswitch
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|
Enclosure ratings
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IP65
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|
Ambient temperature
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-20℃-60℃
|
|
Medium temperature
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0℃-80℃
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|
Anti-Vibration Performance
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Max 20m/s²
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|
Repeatability error
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≤1%
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|
Contact capacity
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Max 220V AC, ≤5A
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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)
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External dimensions
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Switching frequency/minute
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Membrane material
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Internal thread of interface
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|
0.5-3KPa
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0.2KPa
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1
|
01
|
15
|
Stainless steel or rubber
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NPT1/4
|
|
1-10KPa
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0.5KPa
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1.2
|
01
|
15
|
Stainless steel or rubber
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NPT1/4
|
|
1-16KPa
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1.5KPa
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1.5
|
01
|
15
|
Stainless steel or rubber
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NPT1/4
|
|
25~105KPa
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1.8KPa
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3.5
|
01
|
15
|
Stainless steel or rubber
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NPT1/4
|
|
20~200KPa(RN)
|
2KPa
|
5
|
01
|
15
|
Stainless steel or rubber
|
NPT1/4
|
4, Selection Table
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TXK - □ □ - □ - □ - □
1 2 3 4 5
|
|
1. Product Form
|
|
01
|
convention
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02
|
double-contact
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03
|
EEx d
|
|
04
|
Lower differential pressure
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05
|
Upper and lower differential pressure
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06
|
High hydrostatic pressure
|
|
07
|
furnace
|
|
|
|
|
|
2. Shell
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|
NN
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Regular style
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RN
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Dual contact model
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LC
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Ordinary explosion-proof model
|
|
B
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Explosion proof model with small viewing window
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AL
|
Furnace shell
|
|
|
|
3. Diaphragm type
|
|
01
|
poly
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02
|
stainless steel
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03
|
rubber
|
|
4. Connecting thread (customizable as needed)
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|
01
|
NPT1/4 内
|
|
|
|
|
|
5. Range
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Refer to the detailed range selection table
|
|
Selection example: TXK-05NN-02-01-009
TXK differential pressure controller, product form: upper and lower differential pressure, housing: ordinary type, diaphragm form: stainless steel, connection thread: NPT1/4 internal, range: 5-210KPa. |
Range comparison table
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Code
|
Range
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Notes
|
Code
|
Range
|
Notes
|
|
001
|
3.5-27.5MPa
|
Conventional pressure
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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
|
|
|
|
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 is connected to NC at the factory, the green light will light up), 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
01
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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