J120-191隔爆型机械式压力开关选型（Type selection of J120-191 flameproof mechanical pressure switch ）

American UE pressure switch explosion-proof pressure controller mechanical pressure switch American UE original genuine pressure switch spot UE switch model: J120-190 J120-191 J120-192 J120-193 J120-194 UE switch manufacturing standard: ANSI Std MC96-1- 82 UE explosion-proof pressure switch selection guide Pressure switch J120 type: one single pole double throw (SPDT) output; epoxy coating shell; internally adjustable, no reference scale, two electrical interfaces H121 type: one single pole double throw (SPDT) Output; Epoxy coated shell; externally adjustable, with reference scale, an electrical interface H122 type: two single-pole double throw (SPDT) outputs; epoxy coated shell; externally adjustable, with reference scale, an electrical interface H122P Type: two single pole double throw (SPDT) outputs; sealed switch; epoxy coated housing; externally adjustable, with reference scale, an electrical interface differential pressure switch Coated casing; internally adjustable, without reference scale, two electrical connections Type H121K: one SPDT output; epoxy coated casing; externally adjustable, with reference scale, one electrical connection Type H122K: two Single-pole double-throw (SPDT) output; epoxy-coated housing; externally adjustable, with reference scale, an electrical interface Temperature switch type B121: in-line; one single-pole double-throw (SPDT) output; epoxy-coated housing; external Adjustable, with reference scale, single-conduit Type B122: in-line; two single-pole double-throw (SPDT) outputs; epoxy-coated housing; externally adjustable, with reference scale, single-conduit Type C120: in-line ; one single pole double throw (SPDT) output; epoxy coated housing; internally adjustable, no reference scale, dual conduitModel E121: bulb and capillary; one SPDT output; epoxy coated housing; externally adjustable, with reference scale, single conduit Type E122: bulb and capillary; two SPDT ( SPDT) output; epoxy-coated housing; externally adjustable, with reference scale, single conduit Model F120: bulb and capillary; one single-pole double-throw (SPDT) output; epoxy-coated housing; internally adjustable, without Reference scale, dual conduit Model 820E: bulb and capillary; one SPDT output; externally adjustable with temperature indicator, dual conduit Model 822E: bulb and capillary; two SPDT (SPDT) output; externally adjustable, with temperature indicator, double conduit  US UE pressure switch installation, use and maintenance precautions 1. In order to avoid damage to the device, the withstand voltage and extreme temperature cannot exceed the allowable range in the specification, even for a short period of time. In operation, it is allowed to reach the maximum pressure and temperature during start-up and test, but in continuous operation, it must be operated strictly according to the data set by the installation range. Prolonged work at maximum pressure and temperature will reduce the life of the sensor. 2. A spare part is very necessary in harsh environment applications, such as the damage of components may endanger life and property, or the loss of control of high and low limits will cause the system to crash. 3. Attention must be paid to the selection of the range of the controller to ensure that the wrong selection of the set value under unintentional or even intentional circumstances will not cause hidden dangers to the system safety. 4. Where shocks, shocks or large temperature changes will not damage or affect the controller, but in damp locations seal the entry point to prevent moisture from entering. 5. It is forbidden to change or modify components after shipment. If it is necessary to change, you must first consult with UE company. 6. Pay attention to the monitoring of the components, and pay attention to whether the components have set point drift or display errors. If so, check the components immediately.7. It is important to perform preventive maintenance and regular inspections of components to check for damage that could endanger property and personnel. 8. For all components, the factory settings must be checked before use. 9. The rated power specified in the manual must not be exceeded. Overloading will damage components. The wire unit must be selected and installed according to local or international standards. 10. Do not install the component in an environment where the ambient temperature exceeds the range specified in the manual. Installation dimensions of UE explosion-proof pressure switch 

注：除J120-191隔爆型机械式压力开关选型，更多United Electric(UE)型号欢迎电话或在线联系。

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