Flowmetering Gilflo and ILVA flowmeters 3
Pressure/temperature limits
Pressure psi g
0
290
580
870
1160
1440
145
435
725
1015
1305
752 572 392 212 32 400 300 200 100 0 0 10 20 30 40 50 60 70 80 90 99.3 Steam saturation curve
Pressure bar g
The product must not be used in this region.
Body design conditions
ASME 600
PMA Maximum allowable pressure
99.3 bar g @ 38 °C
1440 psi g @ 100 °F
3.2 6
TMA Maximum allowable temperature
400 °C @ 58.9 bar g
752 °F @ 854 psi g
Minimum allowable temperature
-29 °C
-20 °F
PMO Maximum operating pressure is dependant on the flange specification Minimum operating pressure
0.6 bar g
9 psi g
TMO Maximum operating temperature
400 °C @ 58.9 bar g
752 °F @ 854 psi g
Minimum operating temperature
-29 °C
-20 °F
Note: For lower operating temperatures consult Spirax Sarco. Maximum viscosity
30 centipoise
D PMX Maximum differential pressure
498 m bar
200 in Wg
Designed for a maximum cold hydraulic test pressure of:
149 bar g
2161 psi g
Performance The ILVA is designed to be used in conjunction with linearising electronics such as the range of flow computers or M750 display unit. Alternatively the output signal linearisation can be performed on an EMS / BEMS or equivalent.
Accuracy when used with Spirax Sarco flow computers or M750: ±1% of measured value from 5% to 100% of maximum rated flow. ±0.1% FSD from 1% to 5% of maximum rated flow. Repeatability better than 0.25% Turndown: up to 100:1
Caution: Scanner 2000 steam mass flow transmitters are uniquely configured at the factory to work with a single, specific ILVA flowmeter. For correct operation the configured Scanner 2000 transmitter must always be installed with its allocated flowmeter. Labels on the packaging give the serial numbers of the matched products.
Pressure drop The maximum pressure drop across the ILVA pipeline unit is 498 m bar (200 ins water gauge) at maximum rated flow.
Flow capacity To determine the capacity of the ILVA for different fluids, it is necessary to calculate the equivalent water flowrate Q E (in l/min) as described in Step 1, under the section 'sizing the ILVA' then selecting the appropriate size of flowmeter from the Table under Step 2 overleaf.
TI-P337-05 EMM Issue 18
Page 2 of 8
ILVA Flowmeter
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