Instrument and Meter Manufacturer
LFH20 Indoor Temperature and Humidity Transmitter
PRODUCT FEATURES
Description
LFH20 Indoor Temperature and Humidity Transmitter is specially designed for indoor temperature and humidity detection Atransmitter with small size,simple installation and easy operation.Its pair o lightning strikesSurge,electrostatic discharge,grouppulse,withstand voltage,etc.have special design,anti-interference abilityStrong force.There ae three output modes available:current voltage,and RS485.Can be widelylt is used in computer rooms,buildings,warehouses and other places wheetemperature and humidity measurement is required.
Specification
| ①Relative Humidity | ||
| Transmitter | 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 | ||
| Transmitter | Digital or thermal resistance,see model selection table | |
| Range | 0~50℃,-20~60℃ | |
| Output | 4~20mA,0~10VDC,RS485/Modbus optional | |
| Thermal resistance | See model selection instruction and thermal Resistance index table | |
| Accuracy | Digital type:±0.3℃@20℃;Thermal resistance type:±0.2~0.4℃@25℃、See selection table | |
| Power supply | Voltage type/RS-485:15~35VDC/24VAC±20% (AC power supply requires isolated power supply) | Current Type:19.5~35VDC(RL=500Ω)/ 9.5~35VDC(RL=0Ω) |
| Output load | ≤500Ω(Current type)、≥2KΩ(Voltage type) | |
| Display | LCD display optional,with unit display and backlight (4~20)mA output without backlight | |
| Case Material | PC case | |
| Working Environment | -20~60℃,5%-95%RH(Non-condensing) | |
| Protection Grade | IP30 | |
Product Selection
| Code and Description | Remark | |||||||||||||
| LFH20 | Indoor temperature and humidity transmitter | Model | ||||||||||||
| 3 | ±3%RH(±0.3℃) | Accuracy | ||||||||||||
| V10 | 0~10VDC(3-wired) | Humidity Output | ||||||||||||
| A4 | 4~20mA(2-wired) | |||||||||||||
| RS | RS485/Modbus | |||||||||||||
| N | No output | |||||||||||||
| V10 | 0~10VDC(3-wired) | 2 | NTC20K,±0.4℃@25℃ | Temperature Output | ||||||||||
| A4 | 4~20mA(2-wired) | 3 | NTC10K,±0.4℃@25℃ | |||||||||||
| RS | RS485/Modbus | N | No output | |||||||||||
| 0 | PT1000,±0.2℃@0℃ | |||||||||||||
| 1 | PT100,±0.2℃@0℃ | |||||||||||||
| 0 | NO | Temperature Measurement Range | ||||||||||||
| 1 | 0~50℃ | |||||||||||||
| 2 | -20~60℃ | |||||||||||||
| 8 | other(Customized) | |||||||||||||
| 0 | NO | Display | ||||||||||||
| 1 | LCD display | |||||||||||||
| LFH20 3 A4 A4 1 1 | Model Example | |||||||||||||
FAQs
What types of products can we offer?
We provide pressure measuring instruments, level measuring instruments, temperature and humidity measuring instruments, pressure switches, miniature water pumps, flow meters, and other products.
What logistics do we ship through?
Sample=7 days,10~100 pcs=15 day,buck order is negotiable.
Can it be customized as per our requirements?
Yes, customized is accept, please contact us for specific requirements.
Can I get samples?
Yes, you can contact our engineers to request samples.
What services are included in the after-sales service
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.
