LFH30 High-Accuracy Temp & Humidity Transmitter

PRODUCT FEATURES

Humidity accuracy up to+2%RH
Imported humidity-sensitive capacitors,anti-condensation and pollution
Passive temperature output optional
CE certification,Ip65,ROHS

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Description

Specification

Product Selection

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Description

LFH30 High-Accuracy Temp & Humidity Transmitter sensitive components use imported polymer film humidity sensitive capacitors and PT1000 temperaturesensitive resistors.The special breathable coating and SMD injection molding process can ensure the long stability ofthe probe in the environment of dust salt spray pollution and high humidity condensation.It is calibrated with maturehumidity and temperature measurement technology to ensure the accuracy.It is suitable for high-standard intelligentbuildings incubators,industrial dehumidifiers and other fields.

Specification

(1)Relative Humidity
Sensor	High-precision digital core
Range	0%~100%RH
Output	RS485/Modbus,0~10VDC,4~20mA optiona
Accuracy	±2%@20℃&20~80%RH
Response time	<10s(20℃,slow flow air)
(2)Temperature
Sensor	High-precision digital core or passive thermal resistance,see Order Ref No.
Measurement Range	0~50℃,-20~60℃ etc.
Output	4~20mA,0~10VDC,RS485/Modbus optional
Thermal resistance	See Order Ref No.and Thermal Resistance Indexing Table
Accuracy	±0.2℃@20℃ Passivity RTD:typical±0.2~0.4℃@25℃,see Order Ref No.
Power supply	RS485 type:9~35VDC/24VAC±20% Voltage type:12~35VDC/24VAC±20% Current type 12V+RL*20mA<UV<35VDC
Output load	≤500Ω(Current type),≥10KΩ(Voltage type)
Display	Optional LCD display with unit display and backlight(4~20mA without backlight)
Case Material	PC shell,PA6 probe rod and polymer filter
Working Environment	-20~60℃,5%-95%RH(Non-condensing)
Protection Grade	IP65

Product Selection

Code and Description

Remark

LFH301-

Wall-mounted temperature and humidity transmitter

Main
Model

LFH302-

Duct Type Temperature and Humidity Transmitter

LFH303-

Split type temperature and humidity transmitter

±2%RH(0.2℃)

Accuracy

V10

0~10VDC(3-wired)

Humidity
Output

4~20mA(2-wired)

RS485/Modbus

V10

0~10VDC(3-wire)

PT1000,±0.2℃@0℃

Temperature
Output

4~20mA(2-wire)

PT100,±0.2℃@0℃

RS485/Modbus

NTC20K,±0.4℃@25℃

NTC10K,±0.4℃@25℃

None

Temperature
Range

0~50℃

-20~60℃

Other(customized)

None

Display
Mode

LCD display

LFH301 – 2 A4 A4 1 1

Model Example

FAQs

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Please carefully inspect the following products ordered from LEFOO when you receive them.If you do not meet your reservation requirements or find that the products have surface quality problems,please take photos and contact the sales engineer who served you.Once this kind of product is signed,within 7 days,the LEFOO product will maintain the original quality and function when it was sold,and the product itself,accessories,and trademark logos are complete,and you can return the product without reason.Within 30 days,accept the return application due to quality reasons.

For more information on refund timing and amounts(including partial refunds and restocking fees),please contact the sales engineer who served you.·
If you have returned an item to LEFOO by mistake or included something not intended for LEFOO in a return,please contact the sales engineer who served you.
To ensure a good return experience for you,you must adhere to LEFOO’s Return and Refund policies.Thank you for your cooperation.