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KTD* Series

KELE Duct Thermistor and RTD Sensors

The Kele KTD* Duct Thermistor and RTD Sensors are designed to be cost effective with accuracies of ±0.5°F (±0.28°C). Each uses metal enclosures and is constructed for easy installation with any building automation system (BAS). The thermistor is made of a very stable, pre-aged material that offers long-life reliability for HVAC control. The platinum RTD comes in 100Ω and 1000Ω versions. All sensors come with a three-year warranty.

Products

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Qty	Model	Description	In Stock	List Price	Internet Price
	KTD11K	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 4.875", METALLIC ENCL, NO OUTPUT		38.00	21.28
	KTD11K-N1-W	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 4.875", METALLIC ENCL, NO OUTPUT	INFO	105.00	58.80
	KTD11K-QD1/4	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 4.875", METALLIC ENCL, NO OUTPUT	INFO	38.00	21.28
	KTD11K-X25	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 4.875", METALLIC ENCL, NO OUTPUT	INFO	42.00	23.52
	KTD11K-XL8	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 8.00", METALLIC ENCL, NO OUTPUT	INFO	52.00	29.12
	KTD11K-XLT	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 4.875", METALLIC ENCL, NO OUTPUT	INFO	59.00	33.04
	KTD21	TEMP SENSOR, DUCT, 2.252K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	34.00	19.04
	KTD21-XC25	TEMP SENSOR, DUCT, 2.252K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	53.00	29.68
	KTD21-XG	TEMP SENSOR, DUCT, 2.252K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	40.00	22.40
	KTD21-XW	TEMP SENSOR, DUCT, 2.252K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	64.00	35.84
	KTD22	TEMP SENSOR, DUCT, 3K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	34.00	19.04
	KTD22-LT-W	TEMP SENSOR, DUCT, 3K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	76.00	42.56
	KTD22-XD	TEMP SENSOR, DUCT, 3K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	43.00	24.08
	KTD22-XG	TEMP SENSOR, DUCT, 3K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	40.00	22.40
	KTD22-XHP	TEMP SENSOR, DUCT, 3K, 4.875", POLY ENCL, NO OUTPUT	INFO	47.00	26.32
	KTD22-XW	TEMP SENSOR, DUCT, 3K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	64.00	35.84
	KTD24	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC E		32.00	17.92
	KTD24-LT-W	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	76.00	42.56
	KTD24-N1-W	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	90.00	50.40
	KTD24-QD1/4	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	34.00	19.04
	KTD24-X25	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	39.00	21.84
	KTD24-XCP25	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	50.00	28.00
	KTD24-XD	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	43.00	24.08
	KTD24-XG	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	40.00	22.40
	KTD24-XHP	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", POLY ENCL, NO OUTPUT		47.00	26.32
	KTD24-XL2IN	TEMP SENSOR, DUCT, 10K TYPE II, 2.00", METALLIC ENCL, NO OUTPUT	INFO	34.00	19.04
	KTD24-XLT	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	45.00	25.20
	KTD24-XN1	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	59.00	33.04
	KTD24-XN3	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	70.00	39.20
	KTD24-XP	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT	INFO	38.00	21.28
	KTD24-XW	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", METALLIC ENCL, NO OUTPUT		64.00	35.84
	KTD27	TEMP SENSOR, DUCT, 100K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	34.00	19.04
	KTD27-XG	TEMP SENSOR, DUCT, 100K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	40.00	22.40
	KTD27-XHP	TEMP SENSOR, DUCT, 100K, 4.875", POLY ENCL, NO OUTPUT	INFO	47.00	26.32
	KTD27-XW	TEMP SENSOR, DUCT, 100K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	64.00	35.84
	KTD3	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT		34.00	19.04
	KTD3-LT-N1-W	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	101.00	56.56
	KTD3-LT-W	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	76.00	42.56
	KTD3-N1-W	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	90.00	50.40
	KTD3-X25	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	39.00	21.84
	KTD3-XCP5	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	45.00	25.20
	KTD3-XD	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	43.00	24.08
	KTD3-XG	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	40.00	22.40
	KTD3-XHP	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", POLY ENCL, NO OUTPUT	INFO	47.00	26.32
	KTD3-XL8	TEMP SENSOR, DUCT, 10K TYPE III, 8.00", METALLIC ENCL, NO OUTPUT	INFO	38.00	21.28
	KTD3-XL9	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT		34.00	19.04
	KTD3-XLT	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	45.00	25.20
	KTD3-XN1	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	59.00	33.04
	KTD3-XN2	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	64.00	35.84
	KTD3-XN3	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT		70.00	39.20
	KTD3-XP	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	38.00	21.28
	KTD3-XW	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", METALLIC ENCL, NO OUTPUT	INFO	64.00	35.84
	KTD42	TEMP SENSOR, DUCT, 20K, 4.875", METALLIC ENCL, NO OUTPUT		34.00	19.04
	KTD42-LT-W	TEMP SENSOR, DUCT, 20K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	76.00	42.56
	KTD42-X25	TEMP SENSOR, DUCT, 20K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	39.00	21.84
	KTD42-XC25	TEMP SENSOR, DUCT, 20K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	53.00	29.68
	KTD42-XCP25	TEMP SENSOR, DUCT, 20K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	50.00	28.00
	KTD42-XD	TEMP SENSOR, DUCT, 20K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	43.00	24.08
	KTD42-XG	TEMP SENSOR, DUCT, 20K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	40.00	22.40
	KTD42-XHP	TEMP SENSOR, DUCT, 20K, 4.875", POLY ENCL, NO OUTPUT	INFO	47.00	26.32
	KTD42-XLT	TEMP SENSOR, DUCT, 20K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	45.00	25.20
	KTD42-XW	TEMP SENSOR, DUCT, 20K, 4.875", METALLIC ENCL, NO OUTPUT	INFO	64.00	35.84
	KTD81	TEMP SENSOR, DUCT, 100 RTD 385, 4.875", METALLIC ENCL, NO OUTPUT		40.00	22.40
	KTD81-X25	TEMP SENSOR, DUCT, 100 RTD 385, 4.875", METALLIC ENCL, NO OUTPUT	INFO	44.00	24.64
	KTD81-XD	TEMP SENSOR, DUCT, 100 RTD 385, 4.875", METALLIC ENCL, NO OUTPUT	INFO	55.00	30.80
	KTD81-XG	TEMP SENSOR, DUCT, 100 RTD 385, 4.875", METALLIC ENCL, NO OUTPUT	INFO	45.00	25.20
	KTD81-XHP	TEMP SENSOR, DUCT, 100 RTD 385, 4.875", POLY ENCL, NO OUTPUT	INFO	52.00	29.12
	KTD81-XW	TEMP SENSOR, DUCT, 100 RTD 385, 4.875", METALLIC ENCL, NO OUTPUT	INFO	69.00	38.64
	KTD85	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", METALLIC ENCL, NO OUTPUT	INFO	40.00	22.40
	KTD85-LT-W	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", METALLIC ENCL, NO OUTPUT	INFO	81.00	45.36
	KTD85-XD	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", METALLIC ENCL, NO OUTPUT	INFO	55.00	30.80
	KTD85-XG	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", METALLIC ENCL, NO OUTPUT		45.00	25.20
	KTD85-XHP	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", POLY ENCL, NO OUTPUT	INFO	52.00	29.12
	KTD85-XL12	TEMP SENSOR, DUCT, 1K RTD 375, 2.00", METALLIC ENCL, NO OUTPUT	INFO	42.00	23.52
	KTD85-XN2	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", METALLIC ENCL, NO OUTPUT	INFO	70.00	39.20
	KTD85-XN3	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", METALLIC ENCL, NO OUTPUT	INFO	76.00	42.56
	KTD85-XP	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", METALLIC ENCL, NO OUTPUT	INFO	43.00	24.08
	KTD85-XW	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", METALLIC ENCL, NO OUTPUT	INFO	69.00	38.64
	KTD91	TEMP SENSOR, DUCT, 1K RTD 385, 4.875", METALLIC ENCL, NO OUTPUT	INFO	40.00	22.40
	KTD91-XG	TEMP SENSOR, DUCT, 1K RTD 385, 4.875", METALLIC ENCL, NO OUTPUT	INFO	45.00	25.20
	KTD91-XHP	TEMP SENSOR, DUCT, 1K RTD 385, 4.875", POLY ENCL, NO OUTPUT		52.00	29.12
	KTD91-XN1	TEMP SENSOR, DUCT, 1K RTD 385, 4.875", METALLIC ENCL, NO OUTPUT	INFO	66.00	36.96
	KTD91-XN3	TEMP SENSOR, DUCT, 1K RTD 385, 4.875", METALLIC ENCL, NO OUTPUT	INFO	75.00	42.00
	KTD91-XW	TEMP SENSOR, DUCT, 1K RTD 385, 4.875", METALLIC ENCL, NO OUTPUT	INFO	69.00	38.64
	KTDNB11K	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 4.875", NO ENCL, NO OUTPUT	INFO	31.00	17.36
	KTDNB11K-XG	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 4.875", NO ENCL, NO OUTPUT	INFO	36.00	20.16
	KTDNB21	TEMP SENSOR, DUCT, 2.252K, 4.875", NO ENCL, NO OUTPUT	INFO	27.00	15.12
	KTDNB21-XG	TEMP SENSOR, DUCT, 2.252K, 4.875", NO ENCL, NO OUTPUT	INFO	33.00	18.48
	KTDNB22	TEMP SENSOR, DUCT, 3K, 4.875", NO ENCL, NO OUTPUT	INFO	27.00	15.12
	KTDNB22-XG	TEMP SENSOR, DUCT, 3K, 4.875", NO ENCL, NO OUTPUT	INFO	33.00	18.48
	KTDNB24	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", NO ENCL, NO OUTPUT		25.00	14.00
	KTDNB24-X25	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", NO ENCL, NO OUTPUT	INFO	32.00	17.92
	KTDNB24-XC25	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", NO ENCL, NO OUTPUT	INFO	76.00	42.56
	KTDNB24-XCP25	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", NO ENCL, NO OUTPUT	INFO	44.00	24.64
	KTDNB24-XD	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", NO ENCL, NO OUTPUT	INFO	36.00	20.16
	KTDNB24-XG	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", NO ENCL, NO OUTPUT	INFO	33.00	18.48
	KTDNB24-XL2IN	TEMP SENSOR, DUCT, 10K TYPE II, 2.00", NO ENCL, NO OUTPUT	INFO	27.00	15.12
	KTDNB24-XP	TEMP SENSOR, DUCT, 10K TYPE II, 4.875", NO ENCL, NO OUTPUT	INFO	31.00	17.36
	KTDNB27	TEMP SENSOR, DUCT, 100K, 4.875", NO ENCL, NO OUTPUT	INFO	27.00	15.12
	KTDNB27-XG	TEMP SENSOR, DUCT, 100K, 4.875", NO ENCL, NO OUTPUT	INFO	33.00	18.48
	KTDNB3	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", NO ENCL, NO OUTPUT		27.00	15.12
	KTDNB3-GF-N1	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", NO ENCL, NO OUTPUT	INFO	58.00	32.48
	KTDNB3-LT-N1	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", NO ENCL, NO OUTPUT	INFO	64.00	35.84
	KTDNB3-X25	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", NO ENCL, NO OUTPUT	INFO	32.00	17.92
	KTDNB3-XC25	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", NO ENCL, NO OUTPUT	INFO	76.00	42.56
	KTDNB3-XCO	TEMP SENSOR, DUCT, 10K TYPE III, 2.00", NO ENCL, NO OUTPUT	INFO	77.00	43.12
	KTDNB3-XD	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", NO ENCL, NO OUTPUT		48.00	26.88
	KTDNB3-XG	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", NO ENCL, NO OUTPUT	INFO	33.00	18.48
	KTDNB3-XN3	TEMP SENSOR, DUCT, 10K TYPE III, 4.875", NO ENCL, NO OUTPUT	INFO	63.00	35.28
	KTDNB42	TEMP SENSOR, DUCT, 20K, 4.875", NO ENCL, NO OUTPUT		27.00	15.12
	KTDNB42-X25	TEMP SENSOR, DUCT, 20K, 4.875", NO ENCL, NO OUTPUT	INFO	32.00	17.92
	KTDNB42-XCP25	TEMP SENSOR, DUCT, 20K, 4.875", NO ENCL, NO OUTPUT	INFO	44.00	24.64
	KTDNB42-XG	TEMP SENSOR, DUCT, 20K, 4.875", NO ENCL, NO OUTPUT	INFO	34.00	19.04
	KTDNB81	TEMP SENSOR, DUCT, 100 RTD 385, 4.875", NO ENCL, NO OUTPUT	INFO	33.00	18.48
	KTDNB81-XG	TEMP SENSOR, DUCT, 100 RTD 385, 4.875", NO ENCL, NO OUTPUT	INFO	39.00	21.84
	KTDNB85	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", NO ENCL, NO OUTPUT	INFO	33.00	18.48
	KTDNB85-GF-N1	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", NO ENCL, NO OUTPUT	INFO	63.00	35.28
	KTDNB85-X25	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", NO ENCL, NO OUTPUT	INFO	38.00	21.28
	KTDNB85-XG	TEMP SENSOR, DUCT, 1K RTD 375, 4.875", NO ENCL, NO OUTPUT	INFO	39.00	21.84
	KTDNB85-XL2IN	TEMP SENSOR, DUCT, 1K RTD 375, 2.00", NO ENCL, NO OUTPUT	INFO	33.00	18.48
	KTDNB91	TEMP SENSOR, DUCT, 1K RTD 385, 4.875", NO ENCL, NO OUTPUT	INFO	33.00	18.48
	KTDNB91-XG	TEMP SENSOR, DUCT, 1K RTD 385, 4.875", NO ENCL, NO OUTPUT	INFO	39.00	21.84

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Accessories

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Features

Economical

Metal enclosures with stainless steel probes

Three-year warranty

Thermistor or RTD sensor selections

Specifications

Accuracy:

Thermistor:±0.50℉ (0.28℃)

RTD:±0.60℉ (0.33℃)

Temperature Stability:

Thermistor:0.24℉ (0.13℃) over five years

RTD:Max 0.04% after 1k hours @ 500 ℃

Heat Dissipation:2.7 mW/°C (power needed to raise the temperature 1°C)

Sensor Type:

Thermistor:2.252 kΩ, 3 kΩ, 10 kΩ, Type II, III & III w/11K shunt, 20 kΩ, 100 kΩ

RTD:

Type 71, 81:100Ω Pt 385 Curve

Type 85:1000Ω Pt 385 Curve

Type 91: 1000Ω Pt 375 Curve

Temperature Coefficient:

Thermistor:Negative temperature coefficient

RTD:Positive temperature coefficient

Temperature Range:

Thermistor/RTD:-40° to 221℉ (-40° to 105℃)

Enclosure Rating:Depends on model

Mounting:Directly to duct, wall or single gang box

Wiring Terminations:8' (2.4m), 24 AWG gray wire leads, type 71 & 81 sensors have 18" (0.45m) leads

Probe:Seamless 304 stainless steel tube, 1/4" OD

Weight:

KTD:0.72 lb (0.33 Kg)

KTDNB:0.2 lb (0.09 Kg)

Approvals:CE

Warranty:3 years

Certifications

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Catalog Page

KTD* Series

KTD* Series

KELE Duct Thermistor and RTD Sensors

Accessories

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