LF-32 Pressure Switches
The LF-32 series is an adjustable differential pressure switch that is designed with a scaled adjustment knob to make changing a setpoint simple. This switch is best for applications that monitor air flow in ventilation ducts and industrial cooling equipment. Also offers overheating protection for fan heaters and frost protection for heat exchangers.
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| Series No. | LF32 |
| Media | Air, non-combustible |
| Max Operating Pressure | 5kPa |
| Mounting Position | Diaphragm in any vertical plane |
| Degree of protection | IP54 (with cover) |
| Operating Temperature | -40 C to 85 C |
| Contact Arrangement | SPST or SPDT |
| Electrical Rating | Resistance: Inital:<400 millohms; 1.5 A (0.4)@250 V |
| Terminals | 6.4mm (0.25) copper alloy |
| Connection | 6.0mm (0.24) Dia. for tube connection |
| Model | Pressure Range | Differential | Tolerance |
| LF32-02 | 20-200 Pa |.08-.80 H2O | 10 Pa | 0.04 H2O | +/-15% |
| LF32-04 | 40-400 Pa |.16-1.60 H2O | 20 Pa | 0.08 H2O | +/-15% |
| LF32-10 | 200-1000 Pa |.80-4.0 H2O | 100 Pa | 0.4 H2O | +/-15% |
| LF32-25 | 500-2500 Pa |2.0-10.0 H2O | 150 Pa | 0.6 H2O | +/-15% |
Conversion: 1'W.C.= 1 inch/H2O=249 Pa 1mbar= 100 Pa