LumaSense Technologies IN 5/5 - Handbuch (Seite 24)

INFRATHERM pyrometers IN 5 · IN 5/5
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9.3 Avoiding reading errors caused by faulty assembly
To avoid reading errors, please note the following points when mounting the pyrometer:
1. The diameter of the measuring object cannot be smaller than the pyrometer’s spot size (see section 7,
Optics).
2. A source of radiation behind or around the measuring object can influence the result. If the object is
transparent or partly transparent another material behind the object could transmit its radiation to the py-
rometer as well. In this case the location of the pyrometer should be changed, or, if the background ra-
diation remains constant it can be compensated for by changing the emissivity setting respectively.
3. Please take into account that radiation, from other hot materials around the measured object, can be
reflected by these materials and influence the result. If the measured object has a low emissivity, the
temperature measured will be mainly that from the reflected object - not from the intended measured ob-
ject itself. To prevent ambient radiation from reaching the spot area, a mounting tube should be used.
The mounting tube should be placed as near as possible to the measured object so that the tube’s
shadow blocks out all the ambient radiation from the side.
10 Transport, packaging, storage
With faulty shipping the instrument can be damaged or destroyed. To transport or store the instrument,
please use the original box or a box padded with sufficient shock-absorbing material. For storage in humid
areas or shipment overseas, the device should be placed in welded foil (ideally along with silica gel) to
protect it from humidity.
The pyrometer is designed for a storage temperature of -20 … 70°C with non-condensing conditions. A
storing out of these conditions can damage or malfunction the pyrometer.
11 Maintenance
11.1
Safety
Attention during pyrometer services:
Should the pyrometer be integrated in a running machine process the machine has to be switched off and
secured against restart before servicing the pyrometer.
11.2
Service
The pyrometer does not have any parts which require regular service, only the lens has to be kept clean.
The lens can be cleaned with a soft cloth in combination with alcohol (do not use acid solutions or dilution).
Also standard cloths for cleaning glasses or photo objectives can be used.
The Germanium lens of the IN 5 has an anti-reflective coating which appears slightly colored. Be extremely
careful - this layer can easily be rubbed off - this will greatly affect the measuring results!