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18
WARNINGS
AND
OPERATING
INSTRUCTIONS
1.
Do not expose the probes to gases or liquids that could corrode the material of the sensor or the
probe itself. Clean the probe carefully after each measurement. Some pressure probe model are
suitable for measurement of non corrosive gases or air and dry and
not liquid
only: check the
membrane compatibility with the plant fluid.
2.
Do not bend the probe connectors or force them upward or downward. Do not bend or force the
contacts when inserting the probe connector into the instrument.
3.
Do not bend, deform or drop the probes, as this could cause irreparable damage.
4.
Always select the most suitable probe for your application.
5.
Do not use probes in presence of corrosive gases or liquids. The sensor container is made of
AISI 316 stainless steel, while the contact probe container is made of AISI 316 stainless steel
plus silver. Avoid contact between the probe surface and any sticky surface or substance that
could corrode or damage it.
6.
Above 400°C and below –40°C, avoid violent blows or thermal shocks to Platinum temperature
probes as this could cause irreparable damage.
7.
To obtain reliable measurements, temperature variations that are too rapid must be avoided.
8.
Temperature probes for surface measurements (contact probes) must be held perpendicular
against the surface. Apply oil or heat-conductive paste between the surface and the probe in
order to improve contact and reduce reading time. Whatever you do, do not use water or solvent
for this purpose. A contact measurement is always very hard to perform. It has high levels of
uncertainty and depends on the ability of the operator.
9.
Temperature measurements on non-metal surfaces usually require a great deal of time due to the
low heat conductivity of non-metal materials.
10.
Probes are not insulated from their external casing
; be very careful not to come into contact
with live parts (above 48V). This could be extremely dangerous for the instrument as well
as for the operator, who could be electrocuted.
11.
Avoid taking measurements in presence of high frequency sources, microwave ovens or large
magnetic fields; results may not be very reliable.
12.
Clean the probe carefully after use. Clean the probe pressure chamber carefully. Avoid deposits
or incrustations left by the fluid coming into contact with the membrane, as with time this could
cause measurement errors.
13.
Avoid inserting nails or spikes into the pressure chamber as the membrane could be
unintentionally torn.
14.
In order to fix the probes, use a suitable fixed wrench, and possibly sealing gaskets.
15.
Great attention must be paid while installing the probes in containers and tubes under
pressure. Also pay attention to the probes' bottom scale. In addition to the
irreparable damage, it can even cause serious physical damage to both the operator
and things. Before the probe a stop valve should always be present. Ensure that the
plant is not subject to abnormal or unexpected depressed fluid fluctuations.
16.
The instrument is water-resistant and IP66, but is not watertight and therefore should
not be immersed in water without closing the free connectors using caps. The probe connectors
must be fitted with sealing gaskets. Should the instrument fall into the water, check for any
water infiltration. Gently handle the instrument in such a way as to prevent any water infiltration
from the quick couplings' side.
