Yuanben Switches and sensor used for Domestic Solar Water and Pool Heating Systems
The Pressure, temperature switches used for System failure prevention
The system shall be designed that, in the event of a power failure or a failure of any of the system components, the temperatures or pressures resulting from overheat in solar water heating and pool heating systems will not endanger the building or its occupants or damage any of the system components.
The excessive pressure and temperatures that can build up in collectors under "no flow" conditions demand attention. One point of concern is thermal shock which could occur when cool heat transfer fluids are introduced into collectors which have been exposed to solar radiation under "no-flow" conditions. In systems which cannot withstand the maximum temperatures to which they will be exposed it is essential that some means of protection, such as energy dumping, be provided.
Level Switches for Operation indicators
A pumped solar water heating system shall include means for an observer to determine readily when the collector loop pump is operating. A minimum level of information is essential to help the user know whether the solar system is functioning. This may be accomplished by an indicator light or some other audible alarm.
Pt100 temperature sensor for Circulation control
The collector subsystem control shall be designed to be compatible with control requirements of the system.
It can be wasteful of energy to circulate fluid when no solar energy is available unless the circulation is being used for freeze protection. Various control schemes are available including simple temperature sensitive snap switches and variable differential temperature controllers. Special attention should be given to the installation of the control mechanism, including the location and mounting of the sensor element. Incorrectly installed sensors can degrade system performance.
Applications
1,Discharge and suction pressure monitoring
2,Subcooling and superheat calculations
3,Compressor oil pressure monitoring
4,Condenser fan control
5,Compressor staging and unloading
6,Electronic expansion valve control
7,Remote systems diagnostics and trending
Specifications
| Suply Voltage |
5VDC |
| Output Signal |
0.5~4.5VDC |
| Measuring Range |
250KPa;700KPa;1MPa;1.6MPa |
| Proof Pressure |
150%FS |
| Accuracy |
1% |
| Operating Temp |
-20~120°C |
| Storage Temp |
-40~120°C |
Mechanical Configurations
| Pressure Port |
1/8 NPT G1/4 |
| Electrical connection |
3 Pin Packard |
| Sealing Rating |
IP65 |
| Housing |
Brass;Stainless Steel |
| Diaphragm |
Stainless Steel |
* All these parameters above can be customized
Drawings
Photos
Audited Supplier 
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