Operating Instructions

7Operating Instructions VisiFerm
™
mA Sensors
SAFETY PRECAUTIONS AND HAZARDSSAFETY PRECAUTIONS AND HAZARDS
Cross sensitivities and resistances of ODO Cap H4
Wetted parts resistant to Lipophilic compounds
Standard cleaning and
disinfectant solutions (NaOH,
active chlorine, chlorine dioxide)
Organic solvents such as
Ethanol, Acetone, THF
Wetted parts not resistant to Ozone
If the sensor is used in contact with gaseous or liquid organic
solvents, the resulting measurement accuracy in this application
must be separately checked and validated by the customer.
3.3 Instructions for Use in Potentially
Explosive Atmospheres
The VisiFerm mA sensor is certified for use in explosive atmo-
sphere with following Marking:
CE 0035
II 1 G Ex ia IIC T3/T4/T5/T6 Ga
CE 0035
II 1 D Ex ia IIIC T135°C Da
Hamilton Bonaduz AG, CH-7402 Bonaduz, Switzerland
ATEX EC-type Examination Certificate: TüV 18 ATEX 8236X
IECEx Certificate of Conformity: IECEx TUR 19.0050X
The certificates and the declaration of conformity can be down-
loaded from www.hamiltoncompany.com
3.3.1 General Conditions for Safe Operation
Conditions described in the ATEX EC-Type Examination Certifi-
cate or the IECEx Certificate of Conformity must be adhered to.
The operator of equipment in potentially explosive atmospheres
is responsible for ensuring that all components of the system are
certified for that area classification and are compatible with each
other. The regulation of erection (e.g. IEC 60079-10) which apply
to systems and plants used in potentially explosive atmospheres
have to be strictly adhered to. Perform regular visual inspection
of the sensor, its installation and cable for intactness and correct
operational conditions.
If the sensor is being operated in gas atmosphere, the following
process and ambient temperatures have to be observed:
Temperature Process and Ambient
Class Temperature range [T
a/p
]
T3 -20 °C < T
a/p
< 130 °C
T4 -20 °C < T
a/p
< 110 °C
T5 -20 °C < T
a/p
< 80 °C
T6 -20 °C < T
a/p
< 35 °C
If the sensor is being operated in dust environment, the following
process and ambient temperature have to be observed:
the risk of contamination from spilled liquids exists. Installation
and maintenance of sensors must be performed only by trained
personnel. The mobile devices and sensors must be used for
their intended applications, and in optimum safety and opera-
tional conditions.
Use only wired digital or analog connection for the process con-
trol. The Arc wireless interface is designed for sensor monitoring,
maintenance and service purposes.
Make sure that the PG13,5 thread and the O-ring are not dam-
aged when screwing the sensor into the process. O-rings are
consumable parts which must be exchanged regularly (at least
once per year). Even when all required safety measures have
been complied with, potential risks still exist with respect to leaks
or mechanical damage to the armature. Wherever there are seals
or screws, gases or liquids may leak out undetected. Always
make sure that no process medium can be accidentally spilled
before removing the sensor from its measurement setup. Make
sure that no air or gas bubbles sticks to the sensitive part of the
sensor. As a consequence, the measurement value could be un-
stable. Do not put stress on the system by vibration, bending or
torsion. Before use, verify that the sensor is properly configured
for your application.
Failure to observe and carry out the maintenance procedures
may impair the reliability and correct functioning of the measure-
ment system.
ATTENTION! When unscrewing the PG 13,5 thread
connection never turn the sensor at the connector head
because you can loosen the ODO Cap from the sensor
shaft and fluid can reach the interior of the sensor.
ATTENTION! To avoid humidity problems, make
sure that the ODO Cap and protection cap is always
attached firmly to the sensor, and that the O-ring
between the shaft or M12 connector and cap is
undamaged.
The integrated 4–20 mA analog output has been configured
according to factory defaults. You can find full details, including
serial number and most important specifications, on the certificate
provided with each sensor. Before use, verify that the sensor is
properly configured for your application.
Make sure that following cross sensitivities and resistances of
ODO Caps are respected.
Cross sensitivities and resistances of ODO Cap H3
Wetted parts resistant to Standard cleaning and
disinfectant solutions (NaOH,
active chlorine, chlorine dioxide)
Organic solvents such as
Ethanol, Acetone, THF
Wetted parts not resistant to Ozone
Lipophilic compounds