LFH10A Temperature and Humidity Transmitter
High-precision pressure measurement with digital display and data logging capabilities for industrial applications.
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LFH10A Temperature and Humidity Transmitter
Product features
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■Adopt highprecision sensor and main control,longtermstability and antiinterference ability
■Outstanding design,LCD backlight dual display of temperatureand humidity,easy operation
■Overvoltage and reverse connection protection function,IP65 protection level
■Temperature range can be changed by dialing code,485 output canchangethe machine number and baud rate bydialing code
Detailed Description
DESCRIPTION
LFH10A seres temperature and humidity transmitteris a transmiter specily designed for industrial applications.t has three instalationmethods:wallmounted,pipeline,and split.The three output modes of current,voltage,and RS485 are optional.The onsite adaptabilityis strong,and the terminal designis suitable for rapid installtion.It can be widely used in computer rooms,HVAC,buidings,storagevegetable greenhouses,farms and other places where temperature and humidity measurement is required.
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 | 4~20mA,0~10VDC,RS485/Modbus Optional | |
Thermal resistance | See selection table and thermal resistance indexing table | |
Accuracy | Digital sensor:±0.3℃@(0~60℃)see table below. | |
Power supply | Voltage type/RS-485:15~35VDC/24VAC±20% | Current type:14.5~35VDC(RL=2502) |
Output load | ≤250Ω(Current type),≥2KQ(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 | |
ORDER REF NO.
Code and Description | Remark | |||||||||||||
LFH10A1- | Wall-mounted temperature and humidity transmitter | Main | ||||||||||||
LFH10A2- | Duct Type Temperature and Humidity Transmitter | |||||||||||||
LFH10A3- | Split type temperature and humidity transmitter | |||||||||||||
3 | ±3%RH(0.3℃) | Accuracy | ||||||||||||
V10 | 0~10VDC(3-wired) | Humidity | ||||||||||||
A4 | 4~20mA(2-wired) | |||||||||||||
RS | RS485/Modbus | |||||||||||||
V10 | 0~10VDC(3-wired) | 0 | PT1000,±0.2℃@0℃ | Temperature | ||||||||||
A4 | 4~20mA(2-wired) | 1 | PT100,±0.2℃@0℃ | |||||||||||
RS | RS485/Modbus | 2 | NTC20K,±0.4℃@25℃ | |||||||||||
6 | NTC10K,±0.4℃@25℃ | |||||||||||||
0 | None | Temperature | ||||||||||||
1 | 0~50℃ | |||||||||||||
2 | -20~60℃ | |||||||||||||
8 | Other(customized) | |||||||||||||
0 | None | Display Mode | ||||||||||||
1 | LCD display | |||||||||||||
LFH10A1 3 A4 A4 1 1 | Model Example | |||||||||||||
1.Only when the temperature output option is V10 or A4,the corresponding temperature range 18 needs to be selected;
otherwise,only 0 can be selected.
2.Example LFH10A13A4A411 represents the wallmounted type,the temperature and humidity accuracy is±3%RH
(±0.3℃),the humidity output is 4~20mA,and the temperature output is 4~20mA,temperature range 050℃with display.
3.Prolonged exposure of this product's sensor probe to high concentrations of chemical gases may cause the sensor'sreadings to shift.
4.To choose a metal rod temperature and humidity transmitter,you need toclearly write the specifications of the metal rodand the front coverin the remarks.
DIP SWITCH DESCRIPTION
485 types:The first 6 digits of the 8bit dial code are the address,the address can be set to 163,the factory default setting is 1,andthe 7/8 digits are the baud rate and can be set to 13,respectivelyrepresenting 1:96002:192003:38400.The setting method is asfollows:(ON stands for 1,OFF stands for 0numbers 1~8 onthe dia panel represent low to high)
Voltage or current type:3bit dial code to select the temperature range,which can be set to 07,respectively representing(1:050℃、2:060℃、3:080℃4:0~100℃、5:20℃~60℃、6:20~80℃、7:40~60℃0:Default range(20℃60°℃)/Customer specified range)
Note:After all the dial codes are changed,the power must be restarted to make the changes take effect.When the address or baud ratedial code is 0,the 485 can be changed by software!
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