Instrument and Meter Manufacturer
LFH71 Intrinsically Safe Temperature and Humidity Transmitter
PRODUCT FEATURES
Description
LFH71 is a temperature and humidity transmitter that can be applied in hazardous occasions.The product adopts cast aluminiumhousing with high protection level,which is suitable for the monitoring of natural gas pipeline network,air supply system of powerplant,pharmaceutical factory clean room and other industrial environments with complicated working conditions.The productadopts imported temperature and humidity sensors,with high precision and fast response.The product is divided into intrinsicallysafe explosion-proof(with display),intrinsically safe dust explosion-proof two models,of which intrinsically safe explosion-proofcan work in Zone 0,Zone 1,Zone 2;intrinsically safe dust explosion-proof can work in Zone 20,Zone 21,Zone 22.
Specification
| 1.Relative Humidity | |
| Sensor | Digital |
| Range | 0%~100%RH |
| Output | 4~20mA(two wire) |
| Accuracy | +3%@20℃&20~80%RH |
| Response time | ≤15s(20℃,Slow flow air) |
| 2.Relative Temperature | |
| Sensor | Digital |
| Range | 0~50℃,-20~60℃ etc |
| Output | 4~20mA(two wire) |
| Accuracy | +0.3℃@20℃,For other accuracy,refer to the digital sensor temperature accuracy curve below. |
Product Selection
| Code and description | Remark | ||||||||||
| LFH711- | Wall Mounted Temperature and Humidity Transmitter | Model | |||||||||
| LFH712- | Duct Type Temperature and Humidity Transmitter | ||||||||||
| LFH713- | Split Type Temperature and Humidity Transmitter | ||||||||||
| A4 | 4~20mA(2-wire) | Output | |||||||||
| 3 | ±3%RH(±0.3℃) | Accuracy | |||||||||
| 1 | 0~50℃ | Temperature Range | |||||||||
| 2 | -20~60℃ | ||||||||||
| 8 | Others(Customer specified,T6:Upper limit 60℃,lower limit -40℃;T4:upper limit 80℃,lower limit -40℃) | ||||||||||
| 0 | Without Display(Explosion-proof type:B/F/BF) | Display | |||||||||
| 1 | LCD Display(No backlight)(Explosion-proof type:B) | ||||||||||
| B | Intrinsically Safe | Explosion- proof type | |||||||||
| F | Dust Intrinsically Safe | ||||||||||
| BF | Intrinsically Safe /Dust Intrinsically Safe | ||||||||||
| LFH711- A4 3 1 1 B | Selection Example | ||||||||||
FAQs
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