Photoelectric Sensor Electric Contact Pressure Gauge
Application
The photoelectric sensor electric contact pressure gauge uses non-contact electric contact and photoelectric sensor, with high sensitivity, rapid response, high control accuracy, stability and no hysteresis. With photoelectric non-contact signal to switch, it has no arc, no contact ablation phenomenon, long service life and excellent switching. In the petroleum, chemical, electric power plant, heating, environmental protection and other industries, it is used in the pressure measurement, control and alarm system of liquid, gas or steam that is not corrosive to copper alloys. It is used in conjunction with electrical devices (such as relay, contactor) to pre-set the maximum or minimum pressure value and achieve automatic control and signal (alarm) purposes for the controlled system.
Parameters
Diameter: φ150mm
Accuracy: 1.6%
Working Pressure:
- Steady: 3/4 X full scale value
- Fluctuating: 2/3 x full scale value
- Short Time: Full scale value
Load power: 250VA
Working voltage: AC220V，Internal contacts: DC24V
Control mode: Control Method: Upper and lower limits
Connection Thread: M20x1.5, PF(PT,NPT)1/2, etc.
Elastic element: Qsn8-0.3 brass
Connection Material: HPb59-1 brass
Movement: Brass
Case: CR1 steel sheet
Window: PC glass
Operation
■The wiring operation should be carried out by a qualified electrician.
■When debugging or switching the control section, the control circuit should be disconnected, and the power can be turned on after the operation is completed.
■Please read the instructions carefully before use.
■It is necessary to add a protective device for the pressure gauge in an environment with a sharp pressure change or vibration or pulsation.
■When installing or disassembling, don't pull the case of the gauge by hand, use a special wrench to install or disassemble.
■To measure oxygen, acetylene or other flammable gases, pressure gauges with oil prohibition signs should be used.
■The pressure gauge should be installed horizontally or vertically.
■Please use Hakin special medium pressure gauge when measuring the medium that is explosive or corrosive, easy to crystallize or solidify.
■The pressure gauge should be installed horizontally or vertically.
Model Code
lf you have other requirements, please confirm with our company's technical department before customizing.
Pressure Range & Accuracy
Boundary Dimension
wiring Diagram
1. 1,2 is connected to the power supply (the output terminal of the transformer secondary coil) to supply power to the gauge.
2. 3 and 4 are upper limit control switches, 5 and 6 are lower limit control switches.
3. KM1 and KM2 are the coils of two AC contactors.
4. L and N are connected to the external control circuit to supply power to the primary coil of the transformer.
5. When the pressure is lower than the lower limit, 5 and 6 are connected to make the contactor KM1 form a self-locking. Then the external electrical equipment or device starts to work.
6. When the pressure reaches the set upper limit, 3 and 4 are connected. The normally closed contactor of KM2 is disconnected, and the KM1 coil is cut off. Then the external electrical equipment stops working. So as to achieve automatic control.
7. 7 Connect the ground wire.
8. Please operat by a professional electrician and please read the instruction manual carefully before wiring and installation.
Demo Mode
★ Photoelectric Sensor Electric Contact Pressure Gouge, Diameter φ150, Bottom Connected, Pressure Range0~1MPa, Connection Thread M20x1.5.
If you can provide information such as measuring medium, installation conditions, etc, we can select the model for you more quickly and accurately.
Order Remarks
Safety Warning
For safety, please select the correct model of product. If the product is selected or used improperly, it may cause property loss or personal injury. The designer and user of the system should be fully responsible for selecting the correct product and using the product in the correct way.
