The determining factor for choosing a gauge is on
the one hand the medium, and on the other hand the pressure and temperature
range within which the gauge is to be used. It is on these factors that the
design, construction materials and finally the price of the gauge
Basically, Klinger liquid level gauges can be used for every medium
encountered in practice; our range of construction materials varies from low
temperature steels to high-tensile heatresistant steel.
Level gauges for steam and hot water
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Robustly made, safe against glass
Steam boilers are more frequently shut down and
started up than other pressure vessels. This puts extreme demands on the glass
and the gauge. The glass must withstand the thermal stresses which arise, the
gauge body must therefore be stable and rigid. Our gauge bodies are designed to
meet the needs of the glass: the glass lies between sealing and cushion gaskets
and except for the sight area is completely enclosed by metal. This is one of
the prerequisites for the safety of our gauges in service: even if a glass
breaks, it remains wedged in the glass housing. Glass splinters cannot be blown
Up to 32 bar: Reflex gauges
On steam boilers where the pressure does not
exceed 32 bar, reflex gauges are the best and most economical solution.
Up to 120 bar: Transparent, mica-protected
Our transparent gauges are offered for the
pressure range up to 120 bar. Transparent gauges on steam boilers are provided
with an illuminator to ensure perfect visual indication.
Up to 180 bar: Bi-colour gauges
We have developed bi-colour level gauges for
steam pressures up to 180 bar. This insures the clearest indication possible.
Such gauges are used exclusively on steam boilers.
Level gauges for media in the processing
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The service conditions in the process industries
(oil refineries, petrochemical and also chemical plant) are completely different
to those in steam generating plant.
In the process industry too, the reflex gauge
gives the clearest indication regardless of whether the medium is clear or
If the medium is dirty, viscous or aggressive,
flat transparent glasses guarantee better indication since the glass surface can
be protected by mica shields against serious attack by the medium.
Temperature range -196°C up to +400°C
Level gauges in the process industries are mainly
exposed to nonvarying service conditions: extremely high pressures at low
temperatures or low pressure at high temperatures.
Low temperature applications
When working with media under cryogenic
conditions it should be ensured that metallic materials display the necessary
impact strength. Glass, which is brittle even at room temperature, does not
change its properties at low temperatures.
No impairment of vision due to icing
Ice which forms on the gauge glass can make
observation difficult. For such cases we offer anti-frost blocks which ensure
complete readability of the level even in low temperature applications. Gauges
fitted with this accessory must of course be well insulated to suit the ambient
Ancillary heating systems
If the medium tends to become viscous or
solidifies when the temperature falls, the deposits formed on the glass can make
it impossible to read the level. For such cases we supply ancillary heating
systems for the gauge and shut-off fittings. The medium is thereby maintained in
the liquid state and good visibility is ensured.
Explosion proof illuminators
With coloured media indication is
unexceptionable. If the medium is clear water and a transparent gauge is used,
an illuminator must be provided to ensure clear indication of the level. We
supply illuminators to class IP 65 E Ex d II cT 6. Type aprooved according to