Cable and wire technology

Thermocouple compensation wire type and alloy wire material

Thermocouple compensation wire is suitable for temperature control systems of energy, metallurgy, petroleum, chemical and other factories and mines and scientific research departments. It is used for the connection between the cold end of the temperature measuring instrument and the temperature measuring instrument. This introduces the characteristics and uses of the thermocouple compensation wire. This paper introduces the thermocouple compensation wire type and the thermocouple compensation wire alloy wire material with different indexing numbers.

Thermocouple compensation wire Model name: (take K-type thermocouple compensation wire as an example)

Type	Structural materials
KX-VV	Polyvinyl chloride insulation and sheathing common compensation wire and cable for thermocouples with K index
KX-VV22	Polyvinyl chloride insulated and sheathed steel tape armored compensating cable for ordinary grade K index thermocouple
KX-VPV	Polyvinyl chloride insulated and sheathed copper wire braided shielded conductor wire and cable for common grade K thermocouples
KX-VPV22	PVC insulated and sheathed copper wire braided sub-shield steel strip armored ordinary grade K index thermocouple compensating cable
KX-VVP	Polyvinyl chloride insulated and sheathed copper wire braided general shielded thermocouple compensation cable for ordinary grade K
KX-VV22P	PVC insulated and sheathed copper wire braided general-shield steel strip armored ordinary grade K index thermocouple compensation cable
KX-VPVP	Polyvinyl chloride insulated and sheathed copper wire braided sub-shield and total shielded common-grade K-type thermocouple compensation cable
KX-VPV22	PVC insulated and sheathed copper wire braided sub-shield and total shield steel tape armored ordinary K index thermocouple compensation cable
KX-FF	Fluoroplastics and sheathed compensating wires and cables for thermocouples of ordinary grade K
KX-FPF	Fluoroplastic and sheathed copper wire braided sub-shield shielded wires and cables for common grade K thermocouples
KX-FFP	Fluoroplastic and sheathed copper wire braided general shielded compensating wires and cables for common grade K thermocouples
KX-FPFP	Fluoroplastic and sheathed copper wire braided sub-shield and total shielded thermocouple compensation cable for ordinary grade K index

Thermocouple compensation wire Alloy wire material and insulation color:

Compensation wire type	Equipped with thermocouple	Thermocouple indexing number	Compensation wire alloy wire		Insulation color
			Positive level	Negative level	Positive level	Negative level
SC	Platinum rhodium 10-platinum thermocouple	S	SPC (copper)	SNC (copper nickel)	red	green
RC	Platinum and rhodium 13 thermocouple	R	RPC (copper)	RNC (copper nickel)	red	green
KCA	Nickel-chromium-nickel silicon thermocouple	K	KPCA (iron)	KNCA (copper nickel)	red	blue
KCB			KPCB (copper)	KNCB (copper nickel)	red	blue
KX			KPX (nickel chrome)	KNX (nickel silicon)	red	black
NC	Nickel-chromium-silicon-silicon thermocouple	N	NPC (iron)	NNC (copper nickel)	red	gray
NX			NPX (nickel chrome silicon)	NNX (nickel silicon)	red	gray
EX	Nickel-chromium-copper-nickel thermocouple	E	EPX (nickel chrome)	ENX (copper nickel)	red	Brown
JX	Iron-copper nickel thermocouple	J	JPX (iron)	JNX (copper nickel)	red	purple
TX	Copper-copper nickel thermocouple	T	TPX (copper)	TNX (copper nickel)	red	White

Thermocouple compensation wire specification:

section（mm2）	Conductor diameter（mm）	Logarithmic range	Core number range	Special restrictions
0.5	1/0.80或7/0.30	1，2，3，～24	2	Do not armor when the core is 4 pairs or less
0.75	1/0.97或7/0.37
1.0	1/1.13或7/0.43
1.5	1/1.38或7/0.52
2.5	1/1.78或7/0.68