WIKA 54_twintemp - Manual (Page 8)

GB
14004105.01 05/2011 GB/D/F/E
8 WIKA operating instructions model 54, Twin-Temp
3. Specifications
Specifications Model 54, Twin-Temp
Measuring element Bimetal helix and Pt100
Nominal size 63, 80, 100, 160
Instrument version
■ Model A5x
■ Model R5x
Rear mount (axial)
Lower mount (radial)
Permissible ambient
temperature
at the housing max. +60 °C (other versions
on request)
Working pressure
■ Continuous load (1 year)
■ short term (max. 24 h)
Measuring range (DIN EN 13190)
Scale range (DIN EN 13190)
Case, ring Stainless steel 1.4301
Stem, process connection Stainless steel 1.4571
Ingress protection IP 65 per EN 60529 / IEC 529
IP 66, liquid-filled
For further specifications see WIKA data sheet TV 15.01 and the
order documentation.
4. Design and function
4.1 Description
This series of thermometers is designed for installation in pipes,
vessels, plant and machinery.
The „Twin-Temp“ combined bimetal thermometer offers two
measuring systems in one instrument.
A bimetal thermometer enables the visualisation of measured values
on site without power supply, while, in addition, the integrated Pt100
resistance sensor provides an electrical signal for further processing.
This design is particularly recommended for safety-critical applica-
tions and in case of limited space where the process can be opened
only at one place.
3. Specifications / 4. Design and function