LFH10 Temperature and Humidity Transmitter

PRODUCT FEATURES

New industrial appearance quick installation design, suitable for rapid installation and deployment
Imported sensors,high precision,fast response, good long-term stability
Excellent anti-interference ability and protection function, CE certification,IP65,ROHS
Large LCD backlight,dual display of temperature and humidity multiple installation and output modes are optional

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Description

Specification

Product Selection

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Description

Temperature andhumidity transmitter is the most commonly used sensor in production and life It is widely used in meteorology,naional defense,scientific research,post and telecommunications,chemical industry,environmental protection,medicine,hotels,food and other materials storage HVAC,etc field where air temperature and humidity need be controlled.

Specification

①Relative Humidity
Sensor	Digital
Range	0%~100%RH
Output	RS485/Modbus,0~10VDC,4~20mA optional
Accuracy	±3%@20℃&20~80%RH
Response time	≤10s(20℃,slow flow air)
②Temperature
Sensor	Digital or thermal resistance,see model selection table
Range	0~50℃,-20~60℃etc.
Output	RS485/Modbus,0~10VDC,4~20mAoptional
Thermal resistance	see model selection instruction and thermal Resistance index table
Accuracy	Digital transmitter:±0.3℃@(0~60℃)see below table.Thermal resistance transmitter typical ±0.2~0.4℃@25℃,see model selection instruction
Power supply	Voltage type/RS-485:15~35VDC/24VAC±20% (AC power supply needs to be connected to an isolation transformer)	Current type:18.5~35VDC(RL=500Ω) 8.5~35VDC(RL=0Ω)
Output load	≤500Ω (Current type),≥2KΩ(Voltage type)
Display	LCD display optional,with unit display and backlight(4~20mA without backlight)
Case Material	PC shell,PA6 probe rod and polymer filter (optional stainless steel probe and stainless steel sintered filter)
Working environment	-20~60℃,5%-95%RH(non-condensing)
Protection Grade	IP65

Product Selection

Code and Description

Remark

LFH101-

Wall-mounted temperature and humidity transmitter

Main
Model

LFH102-

Duct Type Temperature and Humidity Transmitter

LFH103-

Split type temperature and humidity transmitter

±3%RH(0.3℃)

Accuracy

V10

0~10VDC(3-wired)

Humidity
Output

4~20mA(2-wired)

RS485/Modbus

V10

0~10VDC(3-wired)

PT1000,±0.2℃@0℃

Temperature
Output

4~20mA(2-wired)

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

LFH101 3 A4 A4 1 1

Model Example

1.The current type of LFH101/102/103 product is powered by the humidity loop,so this loop must be used,otherwise the produccannot work normally.
2.Only when the temperature output option is V10 orA4,you need to select the corresponding temperature range 1 to 8;otherwise you can only select 0.
3.Take LFH101-3A4A411 for example,it represents the wall-mounted type,the temperature and humidity accuracy is 3%RH(0.3℃)the humidity output is 4~20mA,the temperature output is 4~20mA,and the temperature range is 0~50℃with display.
4.If the sensor probe of this product is exposed to high-concentration chemical gas for a long time,may cause the transmitte’sreading offset.
5.To choose a metal rod temperature and humidity transmitter,you need to clearly write the specifications of the metal rod andthe front cover in the remarks.

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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.

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