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product description
PA-SDN/SSNS series Pressure controller
Application:
Pressure controller is subjected to stress signals and action of a kind of automatic control device,In the refrigeration unit, when the compressor discharge pressure more than set point of suction pressure below the set value, the pressure controller will automatically cut off the circuit, make the compressor parking and security protection effect
Working principle：
Pressure controller is subjected to stress signals and action of a kind of automatic control device,In the refrigeration unit, when the compressor discharge pressure more than set point of suction pressure below the set value, the pressure controller will automatically cut off the circuit, make the compressor parking and security protection effect
In the refrigeration system, the high voltage end (or single high pressure) of the controller is connected with the compressor's exhaust port, and the low pressure end (or single low pressure) is connected with the suction port of the compressor. When the exhaust pressure of the compressor exceeds the set point of the controller, the contact of the high voltage end of the controller is disconnected. and the circuit is cut off and the compressor stops. When the suction pressure of the compressor drops to a point lower than the controllar's low pressure.setting,the contact of the low-voltage end of the controller is disconnected,the electrical appliance is cut off,and the compressor stops. The above situation is the opposite, the high pressure compressor exhaust pressure drops gradually to the controller set point of the lower limit,or low pressure compressor suction pressure gradually recovered to controller set point highs,controller of micro switch contact closure, Connect the circuit, the compressor is restarted. Therefore,the pressure controller plays an important role in the compressor's high and low pressure protection, which is of great significance to the cooling of the cold storage and the reasonable operation of refrigerating machine.
Overview
The photoelectric smoke detector is based on the principle of particulate refraction infrared light in smoke to detect fire. The circuit mainly consists of infrared emission part and receiving part, and the emitter and receiver tube are placed in the optical maze.The optical labyrinth can shield the stray light from the outside, but does not affect the smoke entry. In the smokeless state, the receiver only receives very weak infrared light. When smoke enters, the received light signal is enhanced due to scattering. When the smoke reaches a certain concentration, the detector outputs an alarm signal.
Product installation:
1. Please connect the battery to the battery button and install the battery box in the product to keep the battery powered and the product in normal working condition.
2.Turn on the power, the detector directly enter into the normal monitoring state, the indicator flashes every 40 seconds, alarm state, the indicator lamp flicker once a second.
3. Select the appropriate position, generally installed on the ceiling in the center of the probe space, use the mounting screw to fix the base in the selected installation position, clip the detector in, rotate and check whether it is firm.
4. After installation, press test key to test whether the product is working properly and buzzer is buzzer.
Company Profile
Wenzhou Senben Security Equipment Co., Ltd founded in 2017, our company is located in yueqing city, zhejiang province, which is a one-stop purchasing company integrating production, sales and services. The company has advanced production equipment and professional fire protection technology. At present, there are more than 100 employees, including more than 10 employees overseas, through scientific and effective management system, establish a good corporate image and brand effect.
The company's products have all followed the "safe and effective" principle from the selection of raw materials to finished product packaging and delivery, the company has relied on the strong technical force and advanced testing methods to strictly ensure the quality of each product , got qualified after the test by the National Fire Product Quality Supervision and Testing Center and obtained the domestic "CCC" certification, through scientific and effective management system, good corporate image and brand effect are established..
In a few years of the development of company, we always provide our customers with good products and technical support, perfect after-sales service, our company has good products and professional sales and technical team, if you are interested in my company’s products and services, look forward to your online message or call advisory!
Tel: +86-577-62912556
Fax: +86-577-62912155
Cell：+86-13806600596
E-mail: shani@chinaxurui.com
