WIKA 55 Series User Manual

EN
12968065.06 06/2019 EN/DE/FR/ES
18 WIKA operating instructions model 55
Faults Causes Measures
Blisters in the
window (laminated
safety glass)
Ambient temperature
too high
Isolate against radiated
heat
Not possible
to screw the
instrument into the
thermowell
Incorrect thread or stem
diameter or thermowell
stem too long
Exchange thermometer or
thermowell
Dial has become
coloured
Ambient temperature
too high
Isolate against radiated
heat
Window cracked If necessary, secure
thermometer via the
case
Exchange the instrument
7. Maintenance and cleaning
For contact details see chapter 1 “General information” or
the back page of the operating instructions.
7.1 Maintenance
These bimetal thermometers are maintenance-free!
The indicator should be checked once or twice every year. To do this
the instrument must be disconnected from the process and checked
using a temperature calibrator.
Repairs must only be carried out by the manufacturer.
6. Faults / 7. Maintenance and cleaning

WIKA 55 Series Specifications

General

Type	Bimetallic thermometer
Case Material	Stainless steel
Accuracy	±1% of full scale
Temperature Range	-70°C to +540 °C
Connection	1/2" NPT
Window Material	Glass
Scale Division	Dependent on temperature range
Dial Size	63 mm, 80 mm, 100 mm, 125 mm, 160 mm