WRNK-181,WREK-181 handle type thermocoupleDetailed product description：

WRNK-181 and WREK-181 handle type thermocouples, also known as handheld thermocouples, are designed to measure the surface temperature of solid media of various shapes, as well as the temperature of liquids and gases. Handle type thermocouples have a wide range of applications and are not limited by the shape of the object surface. They are lightweight in appearance and easy to carry. Due to their small diameter, bendability, vibration resistance, fast thermal response time, and high reliability, handle type thermocouples can be used in conjunction with digital display devices to directly measure and display the temperature of various media within the range of 0-1200 ℃ in different production processes. They are widely used in industrial sectors and enterprises such as metallurgy, chemical industry, textile, printing and dyeing, papermaking, rubber, plastics, ceramics, and grain storage.

model
graduation mark
Temperature measurement range ℃
Thermal response time t0.5s
protective tube material

WREK-181
E
0-400
<5
Stainless steel 1Cr18Ni9Ti

WRNK-181
K
0-1200
<5
Stainless steel 1Cr18Ni9Ti

Thermal response time of handle type thermocouple:
When there is a step change in temperature, the time required for the output of the thermocouple to change to 50% of the step change is called the thermal response time, represented by τ 0.5.

The thermal response time of WRNK-181 and WREK-181 handle type thermocouples shall not exceed the specifications in the table below

Thermal response time τ 0.5S	Shell type	Insulated type
Diameter of casing (mm)
two	zero point four	zero point five
three	zero point six	one point two
four	zero point eight	two point five
five	one point two	four
six	two	six
eight	four	eight