Schaller Automation Visatron VN2020 User Manual

Operating manual  VISATRON® Oil Mist Detector  VN2020 / VN2020 EX
Part number 183001  Version 3.0
185
GLOSSARY
17 Glossary
Term
Description
VN2020 / VN2020 EX
Non Ex / Ex oil mist detector type designation, designed to
protect large engines (gas, diesel and dual fuel)
Measuring head
Provides the functionality of the oil mist detection system and
is used to adjust parameters of measured variables
Engine wall connection
Used to draw in the oil mist atmosphere from the crankcase in
a defined manner
Header pipe
Directs the oil mist atmosphere from the engine wall
connection directly to the oil mist detector
Mounting position
Position at which the oil mist detector unit and sensor unit is
attached to the engine
Bracket
Used to hold the oil mist detector and to connect the oil mist
detector to the engine housing
Siphon block
Alternative in the installation kit to the engine wall connection
(EWC).
Pipe siphon
Drains precipitated oil from the oil mist atmosphere to prevent
blockages in the header pipe.
Oil mist concentration
Volume-specific components of the atmosphere sucked in from
the crankcase
Opacity
Degree in [%] to which the atmosphere sucked in from the
crankcase is opaque
Intake position
Position at which the gas to be measured is taken in from the
crankcase or the central suction system.
Crankcase atmosphere
Atmosphere (potentially explosive in part) which is
permanently present in the crankcase of a large engine
Lower explosive limit (LEL)
Lower explosive limit of a gas or gas mixture
Upper explosive limit (UEL)
Upper explosive limit of a gas or gas mixture
Oil mist detection
Detection and analysis of oil mist concentrations previously
taken from the crankcase of a large engine
IACS
International Association of Classification Societies
Umbrella organisation for various classification societies
M10
Class-compliant assembly and installation according to the
IACS requirements
M67
Sensitivity of the oil mist detector and determination of the oil
mist concentration according to IACS requirements
Communication interface
Interface for data transfer, depending on suitable data
protocols (e.g. CAN, RS485 etc.)
Remote Indicator II
Remote monitoring system for displaying oil mist concentration
and the status of VISATRON
®
oil mist detection systems.
Non-potentially explosive
atmosphere
Areas in which no explosive atmosphere can arise
Potentially explosive
atmosphere
Areas in which a permanent potentially explosive atmosphere
can occur

Schaller Automation Visatron VN2020 Specifications

General

Brand	Schaller Automation
Model	Visatron VN2020
Category	Security Sensors
Language	English