11
WIKA operating instructions, models CTH63I0 and CTH65I0
EN
14120692.02 01/2019 EN/DE
3. Safety
3.6 Explosive atmospheres
DANGER!
Danger to life due to loss of explosion protection
Non-observance of these instructions and their contents may result in the
loss of explosion protection.
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Observe the safety instructions in this chapter and further explosion
instructions in these operating instructions.
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Observe the information given in the applicable type examination
certificate and the relevant country-specific regulations for installation and
use in hazardous areas (e.g. IEC 60079-14, NEC, CEC).
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Operation of the USB interfaces is not permitted in hazardous areas!
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Only use temperture probes siutable for model CTH63I0 or CTH65I0
hand-held thermometers!
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Ensure that the instrument is not exposed to environments that enable the
ingress of humidity, water, conducting liquids or dust.
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Only use the 9 V batteries listed, see chapter 3.6.2 “Permitted batteries”!
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Only replace the batteries outside the hazardous area, see chapter
8.2 “Battery replacement”!
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The permissible ambient temperature is -10 ... +50 °C.
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The optionally available transport and storage case is not approved for
use within hazardous areas! This must always be stored outside the
hazardous area.
Check whether the classification is suitable for the application. Observe the relevant
national regulations.
For applications that require category 2G instruments (potentially explosive gas
atmospheres), the following temperature class classification and ambient temperature
ranges apply:
Marking
Temperature class
Ambient temperature range
Hand-Held thermometer model CTH63I0 or CTH65I0
II 2G Ex ib IIB T4 Gb
T1 ... T4
Ta = 0 ... 40 °C
Temperature probe
II 2G Ex ib IIC T4 Gb
T1 ... T4
Ta = -20 ... +50 °C
3.6.1 Special conditions for use
Batteries
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Only use the listed batteries, see chapter 3.6.2 “Permitted batteries”!
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Only replace the batteries outside the hazardous area, see chapter 8.2 “Battery
replacement”!
