3
INSTALLATION
24
OPTIMASS 7000
www.krohne.com
10/2015 - 4001016303 - MA OPTIMASS 7000 R03 en
Reference conditions
3.4.10 Purge ports
If the meter has been ordered with a purge port, it will be supplied with NPT female connections
which are clearly marked. The connections are sealed with NPT plugs and PTFE tape.
Temperature [
°
C /
°
F]
1
Time [minutes] for Stainless Steel, Hastelloy
®
and Tantalum
measuring tubes
10
15
25
40
50
80
40 / 104
105
90
60 / 140
190
240
80 / 176
330
480
100 / 212
495
800
1
Measured at the centre of the measuring tube.
Ambient temperature
+25
°
C / +80
°
F
Heating medium
Hot liquid
Heating medium temperature
Titanium
+150
°
C / +302
°
F
Stainless Steel, Hastelloy
®
and Tantalum
+100
°
C / +212
°
F
CAUTION!
DO NOT remove these plugs.
The meter is factory sealed with a dry nitrogen gas fill and if moisture is allowed to enter the
meter casing it will cause damage. The plugs should only be removed to purge the meter casing
in the event that the primary measuring tube fails.
If it is suspected that the primary measuring tube has failed, de-pressurise the meter and
remove it from service, as soon as it is safe to do so.
MA_OPTIMASS_7000_en_151026_4001016303_R03.book Page 24 Monday, October 26, 2015 4:44 PM