RKI Instruments RX-517 - Manual (Page 16)

PT0E-0730
15
３−１０．Practical application
(1) Tank inside of crude oil tanker
By use of sampling hose with plummet, it is available to monitor the gas density in the tank.
《Sample in crude oil tanker》
《Use of sampling hose with plummet》
①Mount the sampling hose to the instrument.
②Put into the tank from the plummet of hose.
③Sampling hose shows the mark at every 5m and stop it at the point desired to stop by checking
the distance.
④Check that the flow monitor works normally.
⑤When the reading gets stable after 3 minutes have passed, read out the value.
⑥When change the sampling point, stop at the sampling point and in the same manner, read
out the reading after over 3 minutes have passed.
《HC read out》
HC in the measuring gas stands for iso-butane. But the crude oil to be measured is a mixtures.
It is not always to correspond to the gas density. Here, by exerpting the crude oil vapor
to be considered, when read out the value representing normal hexane, it will be nearly value
in reality. In case of normal hexane, from the vapor condition, this gas can not be vaporiged
to high density range (vol%). Then the HC gas in this description should be iso-butane
gas.
《H2S high density》
High density H2S may effect other sensors for trouble. So, in the atmosphere of high density
H2S to be generated, RX-517 is recommended.
Caution
When measure O2 in insert gas for a long time, be sure to use CO2 in the atmosphere of
below 15%. When use higher density than 15%, make the measuring time as short as possible.
COMBINATION GAS
DETECTOR
GAS SAMPRING PIPE
GAS
SAMPRING
PIPE
AIR VENT HEAD
WBT
COMBINATION GAS
DETECTOR
GAS SAMPRING PIPE
GAS
SAMPRING
PIPE
AIR VENT HEAD
WBT