QAD Series Air Differential Pressure Switches
The QAD series air differential pressure switch is engineered to detect minute pressure changes and is widely utilized for controlling aerator flow, monitoring fans and air conditioning systems. It also provides reliable over-heating and frost protection in industrial cooling applications.
Technical Specifications
| Model |
QAD |
| Media |
Air, non-combustible and non-aggressive gases |
| 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;
Current 1.5A 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
Installation Guidelines
QAD series air pressure controls are factory-calibrated for vertical positioning. Horizontal installation will affect the switching point as follows:
- With cover facing upwards: switching point is 15Pa higher than scale
- With cover facing downwards: switching point is 15Pa lower than scale
Important: Do not install upside down with trip pressures of less than 50Pa!
Electrical 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% |
Note: Specifications are subject to change without prior notice due to design improvements.
Frequently Asked Questions
What's the delivery time?
According to the specification and quantity of your order, generally 4 days for normal standard products within 10pcs.
Are you manufacturer or trading company?
We are manufacturer with many years of experience. We have our own factory. Welcome to visit our factory.
Can we use our logo on the products?
Yes. We can provide OEM service.
Do you have products with ex-proof certificate?
Yes, we can offer intrinsic-safety and flame proof certificates.
What is the warranty of your products?
Normal is 12 months.
What's the means of transport?
Express such as TNT, Fedex, DHL, UPS, or logistics by indicator.
