High Low Pressure Controller for Refrigeration Air Compressor Water
Description
QYD differential pressure switch offers a unique blend of compact dimension, excellent performance, environmental protection, long working life mechanics, and design fexibility. The high resolution micro switch and sensitive diaphragms combine to provide a narrow deadband and high stability.A convenient, internal & safety lock accessible adjustment wheel is multi-turn to provide easy set point adjustability. Typical the switch applications include filter monitoring and proof-of-flow in wastewater, bioprocessing, food and beverage, HVAC, and gas processing industries.
QYD series differential pressure controls is designed to prove flow through pumps
Renovated SPDT micro-switch ensure the reliable switch function
Used in fluoridated refrigerant,but also in air and liquid(-20 to 120°C)
Flexible mounting bracket suits various kinds of application
Various connections are available on request
IP33 rating
CE approval
Model Specification
| Model | Differential(Bar) | Factory Setting | Max Working
pressure |
| Min | Max |
| QYD2C | 0.5 | 2 | 0.5 | 12 |
| QYD4C | 0.5 | 3.5 | 1 | 12 |
| QYD4CH | 0.5 | 3.5 | 1 | 30 |
| QYD6CH | 1 | 6 | 6 | 30 |
| QYD4C/B | 0.3 | 4 | 0.3 | 17 |
Dimensions(mm)
Electric Rating
| Rated Amps(A) Rated Voltage(V) | 125V
A.C | 250V
A.C |
| Non-Inductive Current | 20A | 10A |
Inductive
Current | Full Load | 15A | 8A |
| Locked Roter | 72A |
Contact Function
| 1 | Common Terminal |
| 2 | Close on Pressure Increase |
| 3 | Close on Pressure Decrease |
l Operating direction on press Increase at High Press. Side
Connection & Installation
Mounting Plate
Operating Instruction
1. The new outer cover,two fingers pinch both sides of the plastic lid,open the outer cover can be pumped out;
2. To be installed in the pipe,must use two wrenches and twist tight;
3. Do not install the controller over electric rating of the device.
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