HCC-95P-Ex Series
HITROL CO.,LTD.
7
Installation
Attachment
and
Cautions
A capacitive level switch can be attached using screws (PT, NPT, PF), flanges (ANSI, JIS, DIN),
or Tri-Clamp. Pay attention to the following for installation.
Installation on the side of a tank (horizontal)
As level is detected with an entire electrode, very sensitive measurement is available.
However, build-up causes malfunction. As such, the electrode needs to be installed at a slant
with its tip horizontally at the bottom.
Installation on top of a tank (vertical)
This installation reduces the effect of build-up, but level is detected only with the tip of an
electrode. As such, it has relatively lower sensitivity and may thus be inadequate for an object
to be measured with low dielectric constant.
■
To install 2 or more level switches in one container, keep 300m or more between probes.
(If the gap is smaller between probes, they may interfere each other causing instability.)
■ For the side installation, the inactive road must be exposed by 50mm or more in the tank
with the probe slanted by 15° to the horizontal plane. (Foreign substance between a nozzle
and probe may cause malfunction.)
■ Keep the probe away from the inlet of measure object, and install a protector to protect
the probe.
■ Keep the wire inlet facing the ground to maintain its rainproof feature.
■ When installing it in low level, be careful with dead stock and material bridge.
■ If the measure object is fluid in the tank, set adequate time delay for the output relay.
■
Install a sun cover for outdoor installation so as to avoid the influence of temperature rise.
■
If there is an agitator, keep safety distance between the agitator and probe.
■
When installing the sensor, avoid places with a lot of vibration or obstacles.
■
The fluid flow is severe near the outlet, and it is easy to cause mechanical damage or
chattering, so installation near the outlet should be avoided.
■
It is necessary to check if the temperature and pressure generated inside the tank meet the
specifications.
■
If the temperature of the housing is significantly different from the ambient temperature, a
solvent filling or Gortex (Ventilation) shall be applied prior to use, as condensation may
occur.
■
Use the same standard flange or screw.
■
Make sure to insert gaskets between flanges.
The user shall determine if the product involved is an Ex-proof zone and
install the appropriate product.
