Lefoo Differential Pressure Switch LF32

Name: Differential Pressure Switch LF32
Brand: LEFOO INDUSTRIAL CO.,LTD.
Rating: 4.8 (50 reviews)

The air differential pressure switch (sensor) is used to measure the air differential pressure in ventilation systems. For example, to monitor filter clogging or fan motor belt integrity. Includes mounting kit with the soft tube. It can be used to control the clogging of filters in the air purification sections, as well as to control the operation of the motor of the fan section.

Features of the LF32 air pressure switch

Long life: Designed for 0.1 million switching cycles.

Can be used in cleanrooms.

Possesses high precision of setting and regulation.

Long-term stability of the switch-off setpoints.

Ease of installation

The LF32 is an adjustable differential pressure switch capable of detecting minuscule changes in pressure due to its size and proven design. The switch setpoint or switching point can be field adjustable without the need for a manometer by simply using the adjustment knob and the built-in calibrated visual scale. Differential pressure switch is equipped with a clear cover that not only protects the adjustment knob to be moved involuntary but also provides class IP54 protection.

The LF32 Air Sensing Switch is primarily used in heating and ventilation applications where the need to accurately monitor airflow in air duct systems, air filters, flaps is critical.

Some specific applications of the LF32 Air Handling Unit Pressure Switch are :

Controlling fire protection flaps in ventilation ducts

Monitoring air filters in cooling and heating systems

Monitoring cooling systems of industrial electronic circuits,

Monitoring positive pressure on pressurized rooms

Monitoring airflow on fan heaters (overheating protection)

Frost protection for heat exchanger

The LF32 Adjustable differential pressure switch can also be used as an adjustable pressure switch and adjustable vacuum switch as well.

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Transmitter

Pump

Specification
Features
Application

Technical Data of Differential Pressure Switch LF32

Model	LF32

Media	Air, noncombustive and non-aggressive gas
Max Pressure	10kpa
Mounting	The diaphragm in any vertical plane
liquid Preventing Level	IP54
Operating Temperature	-40 ℃ ~85℃
Contact Arrange	SPDT
Electrical Rating	Resistance:initaial <100 Milliohm, Current:1.5A(0.4A)/250V
Terminal	6.3mm x 0.8 blade or screw terminal
Connection	ɸ 6.4mm for tube connection

Model	Pressure Range (Pa)	Differential (Pa)	Tolerances
LF32-02	20-200	10	≦±15%
LF32-03	30-300	10
LF32-04	40-400	20
LF32-05	50-500	20
LF32-10	200-1000	100
LF32-11	100-1000	50
LF32-25	500-2500	150
LF32-50	1000-5000	250

Features of Differential Pressure Switch LF32

The LF32 Differential Pressure Switch Consists of

Housings and covers.

Membranes.

Mounting bracket made of sheet steel.

The pressure difference between the two taps causes the spring-loaded diaphragm to deflect. This diaphragm ensures the long-term stability of the switching points. An individual scale is engraved on the sensor body to achieve extremely precise regulation.

Can be delivered in 3 different alternatives

1. Only the pressure switch

2. The pressure switch is separately packed and the duct fixing kit separately packed

3. The pressure switch and the duct fixing kit are packed together in one small carton

On/Off output

Switching pressure to be adjusted easily on a scaled adjustment knob

Static, over, under pressure, and vacuum

IP54 protection

LF32 is an adjustable differential pressure switch capable of detecting minuscule changes in pressure due to its size and proven design. The switch setpoint or switching point can be field adjustable without the need for a manometer by simply using the adjustment knob and the built-in calibrated visual scale. This switch is equipped with a clear cover that not only protects the adjustment knob to be moved involuntary but also provides class IP54 protection.

Application of Differential Pressure Switch LF32

Gas burner, central air conditioning, Building intelligent control，Small blower

LEFOO Application of Differential Pressure Switch LF32

Installation instructions LF32 are supplied with the switch. The switch can be installed in air ducts or on walls. A vertical arrangement is recommended, but any arrangement is in principle possible. Mounting positions other than vertical affect the switching points.

The connecting pipes can be of any length, but the response time is increased if they are longer than 2 meters. The sensor must be installed above the connection points. To prevent condensation, the piping must be routed so that there is a gradual slope away from the pressure connection to the transmitter (no loops).

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