DESCRIPTION

LFH10A series temperature and humidity transmitter is a transmitter specially designed for industrial applications.

It has three installation methods: wall-mounted, pipeline and split.

The three output modes of current, voltage, and RS485 are optional.

The on-site adaptability strong, and the terminal design is suitable for rapid installation.

It can be widely used in computer rooms, HVAC, buildings, storage vegetable greenhouses, farms and other places where temperature and humidity measurement is required.

FEATURES

• Adopt high-precision sensor and main control, long-term stability and anti-interference ability
• Outstanding design, LCD backlight dual display of temperature and humidity, easy operation
• Overvoltage and reverse connection protection function, IP65 protection level
• Temperature range can be changed by dialing code, 485 output can change the machine number and baud rate by dialing code

TECHNICAL DATA

RELATIVE HUMIDITY
Sensor	Digital
Measuring Range	0%~100%RH
Output	RS485/Modbus, 0~10VDC, 4~20mA optional
Response Time	≤10s(20℃, slow flow air)
Accuracy	±2%@ 25℃ & 60%RH
TEMPERATURE
Sensor	Digital or thermal resistance
Measuring Range	0~50℃, -20~60℃
Output	4~20mA, 0~10VDC, RS485/Modbus
Work Temperature	-20~60℃, 5%-95%RH (non-condensing)
Thermal resistance	Refer Selection Guide
Output Load	≤250Ω (Current Type) ≥2KΩ (Voltage Type)
Accuracy	Digital: ±0.3℃@0~60℃ Thermal resistance: ±0.2~0.4℃@25℃
Display	LCD display optional, with unit display and backlight (4~20mA output without backlight)
Power Supply	Voltage type/RS485 type: 15~35VDC/24VAC±20% Current type: 19.5~35VDC (RL=500Ω) 9.5~35VDC (RL=0Ω)
Shell Material	ABS housing, PC probe and high polymer filter
Protection Grade	IP65

SELECTION GUIDE

Code and description									Remark
LFH10A1	Wall-mounted temperature and humidity transmitter								Model
LFH10A2	Duct type temperature and humidity transmitter
LFH10A3	Split type temperature and humidity transmitter
	3	±3%RH(0.3℃）							Accuracy
		V10	0~10VDC(Three-wired)						Humidity output
		A4	4~20mA(Two-wired)
		RS	RS485/Modbus
			V10	0~10VDC(Three-wired)					Temperature output
			A4	4~20mA(Two-wired)
			RS	RS485/Modbus
			0	PT1000, ±0.2℃@0℃
			1	PT100, ±0.2℃@0℃
			2	NTC20K, ±0.4℃@25℃
			6	NTC10K, ±0.4℃@25℃
				0	None				Temperature range
				1	0~50℃
				2	-20~60℃
				8	Others (customer specified)
					0	without display			Display
					1	with display
LFH10A1	3	A4	A4	1	1				Selection example

 

DIMENSIONS