Table of Contents
Advertisement
INSTALLATION
3
3.4 Pre-installation requirements
INFORMATION!
The equipment is designed for safe operation under conditions according to the following
classifications:
Pollution degree 2: this means that normally only nonconductive (dry) pollution will occur.
•
Temporary conductivity caused by condensation can occur.
Protection class I: this means the equipment must be earthed.
•
Humidity: <95% RH
•
Ambient temperature: -40...+60
•
(ATEX / DIV1 / IECEx versions: -40...+65
Suitable for indoor and outdoor use.
•
IP66 / NEMA 4X classification.
•
CAUTION!
The flowmeter should be protected from corrosive chemicals or gases and dust or particles
accumulation.
CAUTION!
Do not intend to perform a hydrostatic test of the installed flowmeter.
The flowmeter has been hydrostatically tested during manufacturing (see reports) and must not
be retested with the ultrasonic sensors installed. Water will protude in the sensor pockets and
remain. This will create acoustic shortcuts and possibly cause the flowmeter to start operating
in failure.
DANGER!
To avoid the risk of ignition as a result of electrostatic charging, the equipment cannot be used in
locations where:
high charge generating processes occur
•
•
mechanical friction and/or separation can occur
electron emission (e.g. near electrostatic equipment) can occur
•
3.5 Installation
3.5.1 Mounting position
Install the ultrasonic gas flowmeter in horizontal position with the flow arrow indicator on the
nameplate or on the meter body in the direction of the positive (forward) gas flow.
Make sure that the converter is on top of the flowmeter after the installation.
Check the weight of the meter. Typically the weight of the meter will be considerably more than
the same length of pipe line.
To support the meter additional supports might be needed, preferably two, one on either side of
the meter.
Always support the meter at its flanges, the weight of the meter shall never rest on the case
around the transducers and the cabling.
If supports can not be placed under the meter flanges, supports may be placed under the mating
flanges of the pipeline. If supports can only be placed under the pipeline sections upstream or
downstream of the meter, these supports shall be as close as possible to the meter. In this case
a calculation must be made to verify that the load on the pipeline will not exceed acceptable
values.
20
C / -40...+140
F
°
°
C / -40...+149
°
°
www.krohne.com
ALTOSONIC V12
F)
01/2019 - 4002643505 - MA ALTOSONIC V12 R05 en
Advertisement
Table of Contents
