Burkert 8745 MFC Ethernet, Руководство по эксплуатации

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Technical data
Type 8745 Ethernet, 8745 Analogue
Tab. 13: Product materials common to all product variants Ethernet
product part material
Base block
•
Aluminium
•
Stainless steel 1.4305
Housing Polycarbonate (PC)
Seal Refer to the Type label
Product status indicator PMMA
Parts in contact with the
fluid parts (sensor)
1.4404, Al
2
O
3
, PPS GF40, e poxy
r esin, silicon, silicon nitride
Tab. 14: Specific materials of an MFC with proportional valve
Parts in contact with the
fluid parts
1.4310, 1.4113, 1.4305
Tab. 15: Specific materials of an MFC with motor valve
Parts in contact with the
fluid parts
1.4310, 1.4305, Al
2
O
3
, PPS GF40,
PEEK
6.6 Dimensions, weight
→ Refer to the data sheet of the related product.
6.7 Fluid data
6.7.1 Mass Flow Meter
Tab. 16: Fluid data, MFM
Calibration fluid Air or operating gas
Mass flow-rate range
(reference to N2 (I
N
/min))
20...2500 I
N
/min
Exact range depends on the product base-block size and on
the gas used. Refer to the datasheet related to the product
Type.
Measuring range 1:50
Larger measuring range
available on request.
Repeatability ±0.1% of the full scale
Operating fluid See Type label
Measurement accuracy, after
15 minute warm-up time and
with the calibration fluid
± 0.8%
7)
of the measured value
± 0.3%
7)
of the full scale
Response time < 500 ms
7) If the operating fluid is different from the calibration fluid, then the
measurement accuracy can be lower. If the operating gas is nitrogen
or oxygen , then the given measurement accuracy is correct. But if the
operating gas is natural gas , then the measurement accuracy may be
different because the composition of natural gas varies depending on the
season and origin.
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