Type K thermocouple

NegotiableUpdate on 01/09

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

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Overview

As a temperature sensor, K-type thermocouple is usually used in conjunction with display instruments, recording instruments, and electronic regulators. Prefabricated K-type thermocouples can directly measure the surface temperature of liquid vapor and gas media, as well as solids, ranging from 0 ℃ to 1300 ℃ in various production processes.

Product Details

1. K-type thermocoupleOverview

Industrial assembled K-type thermocouples are commonly used as temperature sensors in conjunction with display instruments, recording instruments, and electronic regulators. Prefabricated K-type thermocouples can directly measure the surface temperature of liquid vapor and gas media, as well as solids, ranging from 0 ℃ to 1300 ℃ in various production processes.
According to national regulations, our company produces prefabricated thermocouples such as Platinum Rhodium 30 Platinum Rhodium 6, Platinum Rhodium 10 Platinum, Nickel Chromium Nickel Silicon, Nickel Chromium Copper, etc. that comply with IEC international standard graduation numbers
The assembly of K-type thermocouples usually consists of main components such as temperature sensing elements, installation and fixing devices, and junction boxes.

Measurement range and allowable error range

Thermocouple category	code name	graduation mark	measurement range	Basic error limit
Nickel chromium constantan	WRK	E	0－800℃	±0.75%t
Nickel chromium nickel silicon	WRN	K	0－1300℃	±0.75%t
铂铑 13 -铂	WRB	R	0-1600℃	±0.25%t
铂铑 10 －铂	WRP	S	0－1600℃	±0.25%t
Platinum rhodium 30- Platinum rhodium 6	WRR	B	0－1800℃	±0.25%t

Note: t is the measured temperature value of the temperature sensing element (℃)

Thermocouple time constant

Thermal inertia level	Time constant (seconds)	Thermal inertia level	Time constant (seconds)
Ⅰ	90-180	Ⅲ	10-30
Ⅱ	30-90	Ⅳ	＜10

Thermocouple nominal pressure: generally refers to the static external pressure that the protective tube can withstand and rupture at operating temperature.
Thermocouple * small insertion depth: should not be less than 8-10 times the outer diameter of its protective sleeve (except for special products)
Insulation resistance: When the ambient air temperature is 15-35 ℃ and the relative humidity is less than 80%, the insulation resistance is ≥ 5 megohms (voltage 100V). Thermocouples with splash proof junction boxes have an insulation resistance of ≥ 0.5 megohms (voltage 100V) when the relative temperature is 93 ± 3 ℃
Insulation resistance at high temperatures: For thermocouples, the insulation resistance (per meter) between the hot electrode (including double branch) and the protective tube, as well as between the double branch hot electrodes, should be greater than the values specified in the table below.