Technical Articles

Duplex insulated copper constantan duplex ANSI T-type thermocouple parameters.

ANSI color code: Positive wire, blue; Negative wire, red; Outer sheath, brown.

Insulation	AWG No.	Item No.	Wire type	Insulation		Maximum temperature		Nominal sizemm (inches)	weight † kg/300 m (lb/1000')
Insulation	AWG No.	Item No.	Wire type	conducting wire	overall	°C	°F	Nominal sizemm (inches)	weight † kg/300 m (lb/1000')
glass	20	GG-T-20	Single share	Glass wire woven tape	Glass wire woven tape	260	500	1.5 x 2.4 (0.060 x 0.095)	4 (9)
	20	GG-T-20S	7 x 28	Glass wire woven tape		260	500	1.5 x 2.5 (0.060 x 0.100)	4 (9)
	24 24	GG-T-24 GG-T-24S	Single share 7 x 32	Glass wire woven tape Glass wire woven tape		200 200	400 400	1.3 x 2.0 (0.050 x 0.080) 1.3 x 2.2 (0.050 x 0.085)	3 (5) 3 (5)
	26	GG-T-26	Single share	Glass wire wrapping		200	400	1.1 x 1.9 (0.045 x 0.075)	2 (4)
	28	GG-T-28	Single share	Glass wire wrapping		200	400	1.0 x 1.4 (0.040 x 0.055)	2 (3)
	30	GG-T-30	Single share	Glass wire wrapping		150	300	0.9 x 1.3 (0.037 x 0.050)	2 (3)
Glass wire covered with stainless steel braided tape	20 20S 24 24S	GG-T-20-SB GG-T-20S-SB GG-T-24-SB GG-T-24S-SB	Single shareSingle shareSingle shareSingle share	glass	The glass wire is covered with stainless steel braided tape	260 260 200 200	500 500 400 400	2.2 x 3.0 (0.090 x 0.120) 2.2 x 3.0 (0.085 x 0.117) 2.2 x 3.0 (0.085 x 0.117) 2.2 x 3.0 (0.085 x 0.117)	6 (14) 5 (11) 5 (11) 5 (11)
Kapton polyamide tape	20 24 30	KK-T-20 KK-T-24 KK-T-30	Single shareSingle shareSingle share	Molten polyamide tape	Molten polyamide tape	260 260 260	500 500 500	1.5 x 2.5 (0.060 x 0.100) 1.3 x 1.9 (0.050 x 0.075) 1.0 x 1.4 (0.040 x 0.055)	5 (11) 3 (6) 3 (5)
PFA glass	30 36 40	TG-T-30 TG-T-36 TG-T-40	Single shareSingle shareSingle share	PFA	Glass wire woven tape	150 150 150	300 300 300	0.9 x 1.2 (0.034 x 0.047) 0.7 x 1.0 (0.028 x 0.038) 0.7 x 0.9 (0.026 x 0.035)	1 (2) 1 (2) 1 (2)
Neoflon PFA (High Performance Performance)	20	TT-T-20	Single share	PFA	PFA	260	500	1.7 x 3.0 (0.068 x 0.116)	5 (11)
	20 22 24 24 30	TT-T-20S TT-T-22S TT-T-24 TT-T-24S TT-T-30††	7 x 28 7 x 30 Single share 7 x 32 Single share			260 260 200 200 150	500 500 400 400 300	1.9 x 3.2 (0.073 x 0.126) 1.7 x 3.4 (0.065 x 0.133) 1.4 x 2.4 (0.056 x 0.092) 1.6 x 2.6 (0.063 x 0.102) 0.6 x 1.0 (0.024 x 0.040)	5 (11) 4 (9) 3 (7) 3 (7) 1 (2)
	36	TT-T-36††	Single share			150	300	0.5 x 0.8 (0.019 x 0.030)	1 (2)
	40	TT-T-40††	Single share			150	300	0.4 x 0.7 (0.017 x 0.026)	1 (2)
PFA polymer with twisted pair and shielded cable	20	TT-T-20-TWSH	Single share	PFA POLYMER	PFA POLYMER AND SHIELD	260	500	3.7 (0.15)	9 (20)
	20S	TT-T-20S-TWSH	7 x 28			260	500	3.8 (0.15)	9 (20)
	24	TT-T-24-TWSH	Single share			260	500	2.7 (0.11)	4 (9)
	24S	TT-T-24S-TWSH	7 x 32			260	500	2.9 (0.12)	4 (9)
Neoflon FEP	20 24	FF-T-20 FF-T-24	Single shareSingle share	FEP	FEP	200 200	392 392	1.7 x 3.0 (0.068 x 0.116) 1.4 x 2.4 (0.056 x 0.092)	5 (11) 3 (7)
FEP polymer with twisted pair and shielded cable	20	FF-T-20-TWSH	Single share	FEP polymers	FEP polymers and shields	200	392	3.7 (0.15)	9 (20)
	20S	FF-T-20S-TWSH	7 x 28			200	392	3.8 (0.15)	9 (20)
	24	FF-T-24-TWSH	Single share			200	392	2.7 (0.11)	4 (9)
	24S	FF-T-24S-TWSH	7 x 32			200	392	2.9 (0.12)	4 (9)
TFE tape polymer	20	TFE-T-20	Single share	TFE TAPE POLYMER	FUSED TFE TAPE POLYMER	260	500	1.5 x 2.5 (0.060 x 0.100)	5 (11)
	20S	TFE-T-20S	7 x 28			260	500	1.5 x 2.7 (0.060 x 0.105)	5 (11)
	24	TFE-T-24	Single share			260	500	1.3 x 1.9 (0.050 x 0.075)	3 (6)
	24S	TFE-T-24S	7 x 32			260	500	1.3 x 2.2 (0.050 x 0.085)	3 (6)
polyethylene	24 24 24	PP-T-24 PP-T-24S PR-T-24	Single share 7 x 32 Single share	polyethylene	polyethylenepolyethylene (Tear rope)*	105 105 105	221 221 221	1.9 x 3 (0.075 x 0.120) 1.9 x 3.1 (0.080 x 0.130) 1.3 x 2.2 (0.050 x 0.086)	5 (10) 5 (10) 3 (5)

Please refer to the TFE-T series with insulated layers of fusion tape.

** Two wires with insulated layers are joined together, but without a covering sheath.

† The weight of the wire on the spool is rounded up to the next highest weight (excluding packaging materials).

†† Overall color is transparent.††† To order special tolerance wires, add "-SLE" before the winding length in the model number. Ordering example: TT-T-24-SLE-1000, 1000' (300m) T-type duplex wire with insulated layers and special tolerance thermocouple wire.

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