Rotary screw pressure switches of adjustable range and differential
settings
Description
A pressure switch is a form of switch that operates an electral
contact when a certain set fluid pressure has been reached on its
input. The switch may be designed to make contact either on
pressure rise or on pressure fall. Pressure switches are widely
used in industry to automatically supervise and control systems
that use pressurized fluids.
Series pressure switches is usually used with fluorinated
refrigerants to control the pressure of compressor in refrigeration
system. It can also used in air and water. Internal Micro-swith
ensures reliable switching. It is provided standard Mounting
Bracket. Temperature package available.
- Q series single pressure controls can be not only used in
fluorinated refrigerant, but also in the air and liquid(allowed
liquid temp. -20 to 120°C)
- Adjustable range and differential settings
- Renovated SPDT micro-switch ensures the reliable switch function
- Flexible mounting bracket suits various kids of application
- Upper lid is optional (IP44)
- Various connections are available on request
- Automatic and manual reset version
- The material of bellows is copper and pressure interface is brass
- Several models available in drip-proof enclosure for marine
applications or in explosion-proof enclosure for special
applications
- CE approval
Technical Data
| Model | Range(bar) | Differential(bar) | Factory setting(bar) | Max bellows pressure |
| Min | Max | Min | Max | OFF | ON |
| Q3 | -0.5 | 3 | 0.35 | 1.5 | 2 | 1 | 16.5 |
| Q6 | -0.5 | 6 | 0.6 | 4 | 3 | 2 | 16.5 |
| Q6M | -0.5 | 6 | ≤1 | 3 | Manual reset | 16.5 |
| Q10 | 1 | 10 | 1 | 3 | 6 | 5 | 16.5 |
| Q16 | 5 | 16 | 1 | 4 | 10 | 8 | 33 |
| Q20 | 5 | 20 | 2 | 5 | 16 | 3 | 33 |
| Q30D | 5 | 30 | 3 | 10 | 20 | 15 | 33 |
| Q30 | 6 | 30 | 3-5(fixed) | 20 | 15-17 | 33 |
| Q30M | 6 | 30 | ≤4 | 20 | Manual reset | 33 |
Note:
Calibration unit on scale plate with “bar” & “psig”, could be
revised into “Mpa”& “kgf/cm2” if required by customers. Connections
could have selections as British Flare (E), solder (C) and
capillary (S).
Dimensions (mm)
Electric Rating
Rated Amps(A) Rated Voltage |
| 125V AC | 250V AC | 24V DC |
| Non-Inductive Current | 20A | 10A | 10A |
| Inductive Current | Full Load Current | 15A | 8A | 8A |
| Locked Roter | 72A | 64A |
Electric wiring
FAQ
1 Q: What's the delivery time?
A: According to the specification and quantity of your order,
generally 4
days for normal standard products within 10pcs.
2 Q:Are you manufacturer or trading company?
A: We are manufacturer with many years of experience.We have our
own factory.Welcome to visit our factory.
3 Q: Can we use our logo on the products?
A: Yes.We can provide OEM service.
4 Q: Do you have products with ex-proof certificate?
A: Yes,we can offer intrinsic-safety and flame proof certificates.
5 Q: What is the warranty of your products?
A: Normal is 12 months.
6 Q: What's the means of transport?
A: Express such as TNT,Fedex,DHL,UPS, or logistics by indicator.
