visiferm™ do sensors - Forbes Marshall

3. Safety instructions
VISIFERM DO Operating Instructions
This sensor only is to be used for the intended use and in an optimum safety
and running conditions. The specifications such as temperature or pressure
being defined in the chapter ‘Technical data’ may not be exceeded under any
circumstances. Threats are imminent if the sensor is not operated correctly or
appropriately.
Assembly and maintenance only have to be performed by trained personnel.
Be careful that the PG 13.5 thread and O-ring are not damaged during the
screwing in into the process. O-rings are wearing parts which regularly have
to be exchanged, at the latest after one year. Even where all necessary safety
measures have been complied with, there are still further risks involving leaks
or mechanical damage to the armature. Where there are seals or screws,
gases or liquids can leak out undetected.
Before removing the sensor make sure that any process medium cannot be
withdrawn.
4. Initial operation
Control the VISIFERM DO sensor during unpacking according to possible
defects. Rejected sensors are to be sent to your HAMILTON merchant in the
original packaging.
1 2
3 4
5 6
1: socked head, 2: key areas with serial number, 3: PG 13.5 thread, 4:
O-ring, 5: sensor shaft with fusion number of the stainless steel, 6, 7:
sensor cap with oxygen sensitive silicone luminophore (sensory element),
serial number of the sensor cap and fusion number of the stainless steel.
VISIFERM DO sensors are delivered by the factory according to the
operation with the integrated 4-20mA power interface as well as to the always
active serial RS-485 bus interface (Modbus RTU – protocol). You also find this
information on the provided certificate which also contains the serial number
as well as the most important specifications.
ATTENTION !
For the operation at measuring amplifiers which are designed for
classical amperometric sensors (Clark cells) a software
configuration in the ECS mode (electrochemical sensor) is needed!
page 5 of 48
7