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當(dāng)前位置:上海埃目斯自動(dòng)化技術(shù)有限公司>>氣體預(yù)處理>>濕度報(bào)警>> LA 1S, LA 25S液位報(bào)警器
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產(chǎn)品型號(hào)LA 1S, LA 25S
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更新時(shí)間:2018-05-15 11:03:31瀏覽次數(shù):484次
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Application
Liquid alarm sensors are used in gas sample
conditioning systems for monitoring gas
cooling and condensate drain-off devices in
order to provide protection for downstream
analysis instruments. This simple monitoring
device reliably signals the penetration of condensate
in the event of cooling or condensate
drain-off equipment being defective and thus
avoids expensive down times as well as high
repair costs for analysis instruments.
In the event of alarm, the power for the
sample gas pump or a solenoid valve is to be
switched off in the gas sample conditioning
system.
Description
The M&C liquid sensors LA..S works on the
principle of electrical conductivity from 50
μS/cm conductance. In order to avoid electrolytic
effects on the sensor surface, the sensors
are powered with alternating current.
The required electronic controller LA-1.. is
available in various versions and is described
in the separate data sheet 5-5.1.2.
Only the newly developed electronic controllers
as described in the afore mentioned
data sheet from date of construction 04/2006
onwards can be used for the M&C liquid sensors
LA..S.
The M&C LA..S liquid sensors are constructed
in such a way that any droplets of liquid in the
sample gas are attracted under gravity to the
sensor surface and even the smallest liquid
droplets trigger a sure and rapid alarm.
The LA 1S sensor is defined for operating
pressure up to 4 bar and LA 25S for up to 25
bar. The sensor protection corresponds to
type IP65 EN 60529.
The LA 1S sensor with its 12 mm diameter
glass body is mounted in the GL connection
of a F..-..-D universal filter or in the LS flow
chamber.
The LA 25S sensor has got a 1/4» special
male connector for mounting in the
FSS..-D universal filter or for mounting in
8 mm tubes using a special union tee connector
LS 25.
When mounting the universal filters and the
flow chamber, the gas inlet and gas outlets
can be rotated through 180° during assembly.
For hazardous areas the sensors LA 1 and LA
25 of the former series without line break
monitoring can be used because they are
«simple components». However the sensors
than may only be used with certified control
electronics, e.g. ER142 Exi (part no. 03E2009
for 230V or 03E2009a for 115V) for intrinsically
safe supply of the sensors.
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