6
Warning. The probe operates at high temperatures – take all necessary precautions to avoid injury through burns.
Caution. Thermal shock may damage the zirconia cell if the flue is cleaned using a high pressure water hose. If this
method of cleaning is used, remove the probe from the flue prior to cleaning. Never use the probe without the sheath.
3.1
Siting – Fig. 3.1
Select the position for the probe avoiding obstructions which may inhibit insertion or subsequent removal. Dimensions for the
probe are shown in Fig. 3.2. A clearance of at least 1in (25mm) in excess of the overall probe length is necessary for installation
or removal procedures.
Caution. The probe
must not
be sited:
• Where it would be subjected to mechanical or thermal shock.
• In the presence of aggressive compounds, e.g. molten slags, molten silicates, metals and vapors of lead, zinc, silicon and
vanadium.
1000
°
C Max. Incoloy Sheath
1250
°
C Max. Porcelain Sheath
600
°
C
Min.
B – Within Process Temperature Limits
Maximum Distance 230ft (70m)
A – Maximum Distance Between EXGP Probe and Interface Electronics Unit
ATMOSPHERE IS PRESENT
DO NOT OPEN WHEN FLAMMABLE
3
INSTALLATION
Caution. Reduced probe life may result if probe is operated above 1250
°
C.
Fig. 3.1 Siting
