LEFOO LFH30 Temperature and Humidity Transmitter with Display Supplier, Suppliers, Supply, Supplies ~ Excel Test Sdn Bhd

Excel Test Sdn Bhd

Sales & Admin Department
Unit C3A10, 3A^th Floor,
Block C, Kelana Square,
17, Jalan SS 7/26,
47301 Petaling Jaya,
Selangor, Malaysia.

Calibration Laboratory
Unit C717, 7^th Floor,
Block C, Kelana Square,
17, Jalan SS 7/26,
47301 Petaling Jaya,
Selangor, Malaysia.

+603-7804 6186

+603-7804 4186

exceltest@excelonez.net

+60192184186

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LEFOO LFH30 Temperature and Humidity Transmitter with Display

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DESCRIPTION

The sensitive components of LFH30 temperature and humidity transmitter adopt imported polymer film humidity sensitive capacitors and PT1000 temperature sensitive resistors.

The special breathable coating and SMD injection molding process can ensure the long stability of the probe in the environment of dust, salt spray pollution and high humidity condensation.

This precise temperature and humidity sensor is calibrated with mature humidity and temperature measurement technology to ensure the accuracy.

It is suitable for high-standard intelligent buildings, indicators, industrial dehumidifiers and other fields.

FEATURES

Humidity measurement accuracy can reach ±2%RH.
Imported humidity sensitive capacitors can resist condensation and pollution.
Optional passive temperature output.
Optional stainless steel probe rod, sintered/stainless steel wire mesh filter, durable and anti-blocking.
CE certification, IP65, ROHS certification.

TECHNICAL DATA

RELATIVE HUMIDITY
Sensor	Humidity Sensitive Capacitor
Measuring Range	0%~100%RH
Output	RS485/Modbus, 0~10VDC, 4~20mA
Response Time	≤10s(20℃,slow air flow)
Accuracy	±2%@ 20℃ & 20~80%RH
TEMPERATURE
Sensor	Pt1000 or passive thermal resistance (Refer Selection Guide)
Measuring Range	0~50℃, -20~60℃, etc
Output	4~20mA, 0~10VDC, RS485/Modbus Optional
Work Temperature	-20~60℃, 5%-95%RH (Non-condensing)
Thermal Resistance	Refer Selection Guide
Output Load	≤500Ω(current type) ≥2KΩ(voltage type)
Accuracy	Digital sensor: 0.3℃ @ 5~60℃ Thermal resistance type: typical: ±0. 2~0. 4℃@25℃
Display	LCD display optional, with unit display and backlight (4-20mA without backlight)
Power Supply	RS485 type: 9~35VDC/24VAC+20% Voltage type: 12-35VDC124VDC+20% Curent type: 19.5~35VDC (RL=500Ω) /9.5-35VDC (RL=00)
Shell Material	PC housing, PC probe and polymer filter (optional stainless steel prcbe rod, sintered / stainless steel wire mesh fiter)
Protection Grade	IP65

SELECTION GUIDE

Code and description									Remark
LFH301-	Wall-mounted type temperature and humidity transmitter								Model
LFH302-	Duct type temperature and humidity transmitter

LFH303-	Split type temperature and humidity transmitter
	2	±2%RH(0.3℃)							Accuracy range
		V10	0~10VDC (3-wired)						Humidity output
		A4	4~20mA (2-wired)
		RS	RS485/Modbus
			V10	0~10VDC(3-wired)			0	PT1000, ±2℃@0℃	Temperature output
			A4	4~20mA(2-wired)			1	PT100, ±2℃@0℃
			RS	RS485/Modbus			2	NTC20K, ±4℃@25℃
							6	NTC10K, ±4℃@25℃
				0	NO				Temperature range
				1	0~50℃
				2	minus 20℃~60℃
				8	Others (customer specified)
					0	No display			Display mode
					1	LCD display
LFH301-	2	A4	A4	1	1				Selection example

1. Only when the temperature output option is V10 or A4, the corresponding temperature range 1-8 should be selected; otherwise, only 0 can be selected.

2. Model example LFH301-2A4A411 represents the Wall-mounted type, accuracy 2%RH (0.3°C), humidity output 4-20mA, temperature output 4-20mA,

and temperature range 0-50°C with display.

3. Exposure of the sensor probe of this product to high concentrations of chemical gases for a long time may cause the reading of the sensor to shift.

4. When selecting a metal rod temperature and humidity transmitter, the specifications of the metal rod and front cover should be specified.

DIMENSIONS

LFH301 Wall-mounted type

LFH302 Duct type

LFH303 Split type

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