Honeywell LF24 PRODUCT DATA

TEMPERATURE SENSOR & TRANSMITTER

GENERAL

LF 24 is a temperature sensor and transmitter that has been
designed for mounting inside air ducts. The sensing coil
consists of a PT 100 resistor capable of measuring
temperatures over its entire length of 3.6 m.
The sensor then calculates the average temperature and
converts this into a proportional output signal. This facility
makes the LF 24 particularly suitable for use in air ducts
where different layers so air may have different temperature,
for example in mixing chambers or next to heating units.

LF24

PRODUCT DATA

FEATURES

• Calculates average temperature from values

measured

• 3.6 m long aluminium sensor coil

• Measures temperature over whole length of sensor

coil

• Simple mounting

• Mounting flange provided

SPECIFICATIONS

Dimensions (mm) 65 x 72 x 61.5 mm

Weight 350 g

Ambient operating limits 0 ... 50 °C

Ambient storage limits – 10 ... + 50 °C

Measuring element PT 100

Measuring range 0 ... 30 °C

Output 0 ... 10 V

Sensor coil length 3.6 m

Minimum coil radius 100 mm

Coil sensing range – 45 ... +150 °C

Power supply 24 V AC ± 20 % or

24 V – 36 V DC

Power consumption max. 1 W

Protecting standard IP 65

Mounting Directly in the air duct using the

flange provided.

NOTE: Distribute the sensing coil evenly across the whole

diameter of the air duct to ensure temperature is
measured accurately.

EN3R-1030 GE51 R1297

LF24

ELECTRICAL CONNECTION

Plug according to DIN 43650 as follows:

DIMENSIONS

65 mm

72 mm

61.5 mm

Coil 3.6 m

Home and Building Control Products

Honeywell AG

Böblinger Straβe 17

D-71101 Schönaich
Phone: [phone]
Fax: [phone]
http://europe.hbc.honeywell.com

Subject to change without notice. Printed in Germany Manufacturing location certified to

EN3R-1030 GE51 R1297