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The LF20-H pressure switches are robust, compact and designed to operate in harsh environments at various pressures. The switch is factory calibrated but in the case that adjustment is needed in the field the switch offers an adjustment screw to facilitate any fine tuning required. The standard diaphragm employed is polyimide making it compatible with many gases and liquids. Several other diaphragm materials are available that make the switch compatible with many mediums. Various electrical terminations are available including tabs and a metric-pack connector that forms a tight seal when connected.
| Model | LF20-H |
| Media | Air, water, motor oils, transmission oils, jet fuels and other similar Hydrocarbon Media |
| Pressure Set Point | Factory set from 10 to 400psi |
| Max Operating Pressure | 500 psi |
| Proof Pressure | 2000 psi |
| Burst Pressure | 4000 psi |
| Opeating Temperature Range | -40℃ to +120℃ |
| Switch Type | Direct action, blade contact |
| Electric Rating | Resistive: 15AMP-6VDC, 8AMP-12VDC, 4AMP-24VDC |
| Inductive: 1AMP-120VAC, 0.5AMP-240VAC | |
| Contact Arrangement | SPST-NO, NC, SPDT |
| Terminal | #8-32 screws, 1/4" blade, Metri-Pack |
| Connection | 1/8" NPT Male, 1/4"NPT Male, G1/8"Male, G1/4"Male |
| Options | Base connector sizes, wire leads, NO/NO. dual circuit and NC/NC. dual circuit |
Conversion: 1kgf/cm²=14.2psi 1bar=14.5psi
| Number | Pressure Set Point Range | Circuitry | Base Material | Connection | Terminals | Cover |
| 0 | / | / | / | / | / | none |
| 1 | 10-35psi±3psi | SPST-NC | / | 1/8NPT | 1/4 blade | cover A |
| 2 | 35-75psi±7psi | SPST-NO | plated steel | 1/4NPT | #8-32 screws | cover B |
| 3 | 75-150psi±10psi | SPDT-NO-C-NC | stainless steel | R1/8 | wire leads | / |
| 4 | 150-250psi±20psi | SPST-NO(adjustable) | / | R1/4 | / | / |
| 5 | 250-400psi±50psi | SPDT-NO-C-NC(NO.adjustalble) | / | G1/8 | / | / |
| 6 | / | / | / | G1/4 | / | / |
The polyimide diaphragm is not suit for water, if customer is to use the pressure switch in water, please contact the factory.
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