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LFM73 Multi-function DP Transmitter/Controller

LFM73 Multi-function DP Transmitter/Controller

■High-precision MEMS digital pressure sensor to detect positive pressure,negative pressure or pressure difference,a better alternative to the traditionalpointer mechanical watch

■Versatile product that combines high-lighted LED digital display,switchcontrol and transmitter output

■The output range of the internal range is adjustable,and a variety ofpressure units can be switched

■Built-in buzzer,provide sound and light alarm,can set the alarm pressurevalue range on site

■Optional relay output or alarm,and at the same time LED indication

■RS-485 serial communication,support for standard Modbus RTU protocol

■Cast aluminum shell,with good impact resistance,heat resistance and so on

■No moving parts,shock-proof;

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Products Description

DESCRIPTION

LFM73 Multi-function Differential Pressure Transmitter/Controller uses high-precision MEMS sensor,LED digital display andtransmitter output to detect the pressure difference.It can replace the pointer-type mechanical pressure gauge.The pressuremeasurement range and pressure unit can be easily adjusted on site through buttons.It adopts an IP65 protection gradehousing and is suitable for energy management systems,heating,ventilation and air conditioning(HVAC),VAV and fan control,environmental pollution control,static Pipeline and clean room pressure,smoke volume control,oven pressurization and boilerventilation control and other fields.

PARAMETER

Measured Medium

 Air or non-corrosive gases

Measurement range

 ±100Pa,±1000Pa,±10000Pa

Overload pressure

 5KPa(±100Pa);10KPa(±1000Pa);
80KPa(±10000Pa)

Accuracy

 ±1.0%FS

Operation Temperature

 -20℃~80℃

Compensated Temperature

 -10℃~60℃

Storage Temperature

 -40℃~85℃

Response time

 0.5s(default)/1.0s/2s/4s

Protection Grade

 IP65

Pressure Connection

 Concave Interface中6.5 mm

Output Signal

 4~20mA(three wire)/0~10V/RS485

Control Signal

 2*SPST,3A-30VDC/250VAC

PowerSupply

 16~30VDC/24VAC±20%

Wiring method

 Cable leads from the back

Consumption

 ≤1.5W

Housing Material

 Cast aluminum housing,PC pane

Communication

 RS-485 standard interface,Modbus RTU protocol

Key

 Three tap keys

Display

 4 bit 0.8"nixie tube

Weight

 390g


SELECTION INSTRUCTIONS

Code and description

Remark

  LFM73


Model number



6

-100~100Pa

Range

0

-1000~1000Pa

2

-10000~10000Pa

…………………………………………………………………………………………


N

  N/A

Signal output type

E

  RS-485 Communication

A

  4~20mA and 0~10V

H

  4~20mA and RS-485 Communication

………………………………………………………………………


N

  N/A

Control output

R

  2 SPDT Relays+1xBuzzer

B

  1x Buzzer

D

  2 SPDT Relays

………………………………………………………


P

  Plastic panel

Mounting panel



F

  Front pane air intake

Intake mode

B

  Back air intake

S

  Side air intake



D

  Direct insertion


Air Hose
Connection

T

  Thread connector transfer




  LFM73        0        -A        R        P        B        D

Selection example


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