QAD Series 50-500Pa Air Differential Pressure Switch with SPDT Contacts for HVAC Systems
Price:
USD6-10/piece EXW factory
MOQ:
50 pcs
Delivery Time:
3-5 working days
Brand:
Keram Controls
Product Description
Product Overview
The QAD Series Air Differential Pressure Switch is designed to detect minute pressure changes in HVAC and air conditioning systems. This precision instrument monitors fan operation, controls airflow, and provides overheat and frost protection in industrial cooling applications.
Key Features
- Visual set point adjustment for precise calibration
- Wide operating temperature range: -40℃ to 85℃
- IP54 protection rating with cover installed
- SPDT contact arrangement for flexible control
- UL, CE, and RoHS certified for quality assurance
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | QAD Series |
| 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 | 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 |
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% |
Dimensions
Installation Guidelines
QAD series air pressure controls are factory-calibrated for vertical position. Horizontal installation affects switching point:
- Cover facing upwards: switching point is 15Pa higher than scale
- 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
Frequently Asked Questions
Q: What's the delivery time?
A: Standard products within 10 pieces typically ship in 4 days.
Q: Are you manufacturer or trading company?
A: We are an experienced manufacturer with our own factory.
Q: Can we use our logo on the products?
A: Yes, we provide OEM services for custom branding.
Q: Do you have products with ex-proof certificate?
A: Yes, we offer intrinsic-safety and flame proof certified products.
Q: What is the warranty of your products?
A: Standard warranty period is 12 months.
Q: What's the means of transport?
A: We ship via express carriers (TNT, FedEx, DHL, UPS) or logistics providers.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Keram (Nanjing)ELECTRICAL Equipment Co., Ltd.
Location
Room 402, Block A, Building 12#, LianDong U Valley, No. 1 Qingnian Road, Yuhuatai District, Nanjing City, Jiangsu Province, China, 210039
Contact Person
James