50-500Pa Air Differential Pressure Switches HVAC Adjustable For Air
Conditioning
Description
QAD Series DPS.
The QAD series air differential pressure switch is used to sense
tiny pressure change and widely used to control the flow of
aerator, to monitor fan and air conditioner. It is also suitable
for over heating protection and frost protection in industrial
cooling system.
Due to its outstanding design, the set point can be adjusted
visually.
Technical Specifications
| Model | QAD |
| Media | Air,non-combustible and non-aggressive gasses |
| Max Operating Pressure | 10kPa |
| Mounting Position | Diaphragm in any vertical plane |
| Degree of protection | IP54(with cover) |
| Operating Temperature | -40℃to 85℃ |
| Contact Arrangement | SPDT |
| Electrical Rating | Resistance: Initial: < 50 milliohms; |
| Current1.5A resistive(0.4A inductive) 250V |
| Electric Connection | 6.3x0.8 blade 46244 or screw terminals |
| Material | Housing:ABS |
| Duct connectors: ABS |
| Membrane: Silicone |
| Cable sleeve:PVC |
| Weight | 0.15kg(0.35kg with flexible pipe) |
| Connection | φ6.0mm for tube connection |
| Approval | UL,CE,RoHS |
Dimensions(mm)
Installation Connections
QAD series air pressure controls is factory-calibrated for vertical
position. If installed horizontally, this will affect the switching
point as following:
• with cover facing upwards, switching point is 15Pa higher than
scale;
• with cover facing downwards, switching point is 15Pa lower than
scale.
Note: Do not install upside down with trip pressures of less than 50pa!
Electric Wiring
Product Range
| Model | Pressure Range | Differential | Tolerance |
| QAD-1 | 20~200Pa | 10Pa | ±15% |
| QAD-2 | 30~300Pa | 10Pa | ±15% |
| QAD-3 | 40~400Pa | 20Pa | ±15% |
| QAD-4 | 50~500Pa | 20Pa | ±15% |
| QAD-5 | 200~1000Pa | 100Pa | ±15% |
| QAD-6 | 500~2500Pa | 150Pa | ±15% |
| QAD-7 | 1000~5000Pa | 250Pa | ±15% |
- The performances stated in this sheet can be modified without any
prior notice due to design improvements
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.
