CryoTemp - Innovative design for low-temperature measurements
Applications
- Petrochemical industry, basic materials, power generation
- Cryogenic tanks
- Cryogenic pipelines
Special features
- Innovative design with high accuracy
- Usable with all relevant thermometers
- Approved for applications in hazardous areas
Description
Due to the global use of hydrogen, extremely low-temperature measurement during transport and storage is gaining an ever-greater relevance. For this demanding application, with the CryoTemp design, WIKA provides the most suitable option for all relevant temperature measuring instruments.
In laboratory trials, resistance thermometers (Pt1000) and thermocouples (type E) were tested for their suitability in cryogenic applications. The special design of the CryoTemp features a high accuracy of +/− 3 Kelvin at minus 253 °C.
The test data from the laboratory investigations served as the basis for calculating new polynomials in the range of −258 °C to −200 °C which are used in the configuration of WIKA transmitters.
What are the response times of the various measuring inserts?
"The measurement of the response time is carried out in flowing water in accordance with DIN EN 60751 and VDI / VDE 3522.
Ø 6 mm 1xTyp K, ungrounded: t 0,5 = 3,3 sec. t 0,9 = 7,9 sec.
Ø 6 mm 1xTyp K, grounded: t 0,5 = 1,1 sec. t 0,9 = 3,5 sec.
Ø 6 ...
moreHow are accuracy classes calculated?
"Per DIN EN 60751 Point 5.1.3 Table 3, in °C:
- Class AA ± (0.1+0.0017 * t)
- Class A ± (0.15+0.002 * t)
- Class B ± (0.3+0.005 * t)
- Class C ± (0.6+0.01 * t)"
Why do some pressure gauges have a liquid fill?
The filling fluid, also called case fill, dampens the moving parts within a pressure gauge, thus protecting the instrument from damage and increased wear caused by vibration. See this blog for the reasons to use a liquid-filled industrial pressure ...
more