TVA Flowmeter for Saturated Steam Service with ... - Spirax Sarco
TVA Flowmeter for Saturated Steam Service with ... - Spirax Sarco
TVA Flowmeter for Saturated Steam Service with ... - Spirax Sarco
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3.3 Mechanical installation<br />
CAUTION: If the electronic housing is mounted at an angle of 45° (or more) from the<br />
vertically downward position the PMO (maximum operating pressure) must be limited<br />
to 7 bar g (101 psi g) - see Figure 12.<br />
A bypass line will enable safe removal of the <strong>TVA</strong><br />
flowmeter <strong>for</strong> maintenance or calibration. Closing<br />
valves V1 and V2 and opening valve V3 will allow the<br />
<strong>TVA</strong> flowmeter to be isolated.<br />
Fig. 12<br />
Installation<br />
limiting conditions<br />
<strong>Steam</strong><br />
Separator<br />
Strainer<br />
V1<br />
V3<br />
Spool<br />
piece<br />
V2<br />
Fig. 13 Typical installation<br />
Trap set<br />
<strong>TVA</strong><br />
flowmeter<br />
3.3.1 Environmental conditions<br />
The flowmeter should be located in an environment that minimises the effects of heat, vibration,<br />
shock and electrical interference. (Pressure / temperature limits are detailed in Section 2.4).<br />
CAUTION: Do not lag (insulate) the <strong>TVA</strong> flowmeter or mating flanges as this may<br />
result in excessive temperatures in the electronics. Exceeding specified temperature<br />
limits will invalidate the warranty, adversely effect the per<strong>for</strong>mance and may damage<br />
the <strong>TVA</strong> flowmeter, see Figure 14.<br />
Fig. 14 Pipeline insulation<br />
Do not<br />
insulate the flanges of the <strong>TVA</strong> flowmeter<br />
Flow<br />
Other considerations<br />
Be sure to allow sufficient clearance <strong>for</strong>:<br />
- Removal of the enclosure end caps.<br />
- Viewing of the display. Note electronics housing<br />
and display can be rotated.<br />
- Antenna rotation.<br />
- Wireless communication (min. 1 m distance from source of interference).<br />
Warning: Do not install the flowmeter outdoors where it is subjected to driving rain or<br />
can freeze.<br />
18<br />
IM-P337-62 MI Issue 1
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