Probes And Extensions - Chauvin Arnoux TK2000 Notice De Fonctionnement

4.9 EFFECT OF CONDUCTOR RESISTANCE (plug-in
probe or extension)
Negligible up to 500Ω (see extension characteristics).
!
Do not use long length conductors in environments
with interference or near electric or magnetic fields.
4.10 CLIMATIC CONDITIONS
Operating range of the thermometer casing: -20°C to +50°C
(related to the scope of use of cold junction compensation in
the casing).
Reference range for the cold junction: +25°C +/- 2°C
IP level: IP65
4.11 DIMENSIONS AND MASS
63 x 163 x 37.5mm (without probe) approx. 200g.
4.12 COMPLIANCE WITH STANDARDS
- Electrical safety : EN 61010-1 - Ed 2001
- Electromagnetic compatibility :
■ Emission : class B
■ Immunity : class B

5. PROBES AND EXTENSIONS

5.1 REMINDERS
NB : For all the probes below, the actual thermocouple is located
at the end of the probe and attached to the sheath (thermocouple
at earth ground).
■ Probe response time : the response time for a thermocouple
subject to a temperature scale represents the time at the
end of which the e.m.f. reaches total variation. For a
thermocouple in a high heat capacity environment, with good
thermal conductivity and good heat exchange, the response
time will be short (intrinsic response time).
On the other hand, if the environment is thermally
unfavourable (e.g. still air), the actual response time may be
100times or more that of the thermocouple.The values
specified below were established in clearly defined
conditions, i.e.
■ For surface, flexible and auto-grip probes by contact on a
polished stainless steel plate coated with silicone grease.
■ The air probe in disturbed air (1m/s).
■ Other probes, by immersion in disturbed water at 90°C
(disturbance speed : 0,3 to 0,5 m/s).
EN 61326-1 - Ed 1997
+ A1 Ed 1998 + A2 Ed 2001
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