Elster NV/SA
Rijkmakerlaan 9
2910 Essen,
Belgium
T + 32 3 670 0700
www.elster-instromet.com
DOCUMENT TITLE
ULTRASONIC FLOWMETER SERIES 6, MODELS Q.SONIC
PLUS
SUBTITLE
QUICK START MANUAL
DOCUMENT NUMBER
22.100.200.000.02/2
REVISION
B
REVISION DATE
2013-02-22
This reproduction is sole property of Elster NV/SA and is subject to the conditions that it or any information contained therein will not be used in any way
detrimental to our interests and that all copies will be returned immediately on demand
PAGE
25 OF 29
22.100.200.000.02_2_B ULTRASONIC FLOWMETER SERIES 6.DOC
Warning!
For the pressure sensor it’s absolutely necessary to
depressurize
the line before exchanging.
7.2.2.
Temperature sensors exchange
The meter might be equipped with an optional temperature sensor for internal use (see
chapters 4.5). As the temperature sensors are specially designed for the Ultrasonic
Flowmeter Series 6, they may only be exchanged with sensors from Elster NV/SA.
As the temperature sensor only measures the flow cell temperature and is not in contact
with the gas in the pipe, exchanging can be done under pressure.
7.2.3.
Transducer exchange
Each transducer is a separate component of the Ultrasonic Flowmeter Series 6 that can be
exchanged independently. This can be done without degradation of the measuring
properties and accuracy (thus the calibration) of the Ultrasonic Gas Flow Meter.
However, as the transducers are paired up during production, Elster NV/SA always
recommends changing both transducers of an acoustic path, if possible.
Warning
!
Obey the rules and regulations that apply to hazardous area
operations and those with respect to custody transfer regulations
(sealing).
Exchanging a transducer can take place when the line with the Ultrasonic
Flowmeter Series 6 is
depressurized
:
Refer to specific installation instructions delivered with the
transducers: Transducer exchange at atmospheric conditions
(Document code: 03.200.001.001.02/2 last valid revision).
Optionally exchanging a transducer can be done when the Ultrasonic
Flowmeter Series 6 is
pressurized
:
A special tool is required for this: the ‘retraction tool NG transducers’.
Please familiarise yourself with the documentation regarding this
special tool: Retraction tool NG transducers (document code:
03.203.101.001.02/2 last valid revision).
Before beginning this procedure please verify if this is allowed by the
safety standards set by your company and local safety regulations. If
in doubt, DO NOT remove the transducers under pressure.
7.2.4.
SPU exchange
Parts of the SPU can be exchanged without problems, provided that the appropriate
hardware and software versions are used. The product numbers can be found on the PCB
and have following structure xxx-xxx-xxx-xxx. The software version and its checksums can
be checked through the front panel (see chapter 6.1).