Flowmeter SVTU-11B, Operating Manual

Page: 20 / 68

20
9 Installation
9.1 Unpacking and degreasing
Unpacking and degreasing of meters are carried out after their being indoors within 2
hours, while ambient temperature varies from 10 up to 30
С
and relative humidity is no more
than 80 %.
To make unpacking, please follow the instructions:
−
open packing boxes;
−
take a package with the calculator and operational documentation;
−
check up completeness of meters in accordance with the order;
−
take meter components from packing boxes, make an external survey and be con-
vinced that there is no mechanical damages, coating infringements and isolation of connect-
ing cables.
Battery installation into calculator should be done as follows:
−
unscrew four screws, which fix a cover of battery module;
−
connect a battery to a calculator board in accordance with the figure 12.1;
−
carefully put a battery into a module, battery cable should be located right inside a
module;
−
close a cover of module and tighten it up by screws.
Wait for appearance of a notice “battery” on the indicator.
Set current time. Procedure to set time is described in Appendix D.
9.2 Installation requirements
9.2.1 Installation of meter components is carried out in accordance with chosen con-
figuration, necessity of application of the additional equipment, and also parameters of water
consumption object.
Schematic circuits for meter installation depending on its configuration are given in
Appendix B.
9.2.2 Climatic conditions in a room, where meter components are installed should be
as follows:
1) In a place for FS and R
Т
D installation:
−
ambient temperature can vary from
−
40
°
C up to +70
°
C;
−
ambient humidity is up to 95 %, while temperature is 35
°
С
;
2) In a place for calculator installation:
−
ambient temperature can vary from 5
°
C up to 55 C;
−
ambient humidity is up to 93 % while temperature is 25
°
С
.
Climatic conditions in a place for installation of the additional equipment should meet
the conditions specified in the operational documentation for this equipment
9.2.3 Protection of places for FS and RTD installation from direct ingress of mois-
ture, dirt, oils and aggressive liquids should be provided.
The content of acid and alkali fume in air of premises, where meter components are in-
stalled, should be within the limits of sanitary rules.
For outdoor FS installation it is recommended to provide protection (canopy) against
direct ingress of atmospheric precipitates on ultrasonic flow sensors.