ADC 410F Instruções de Operação descarregar pdf (Página 71)

10/2

Error limits at reference conditions 10.3

Display, digital values, pulse output

F maximum error in % of measured value (not typical values)

v Flow velocity in m/s and ft/s

Reference conditions similar to EN 2

9104

Product water at 10 – 30°C/50 – 86°F

Electrical conductivity > 300 µS/cm

Power supply (rated voltage) U

(± 2%)

Ambient temperature 20 – 22°C/68 – 71.6°F

Warm-up time 60 min

Inlet/outlet runs 10

DN/2

DN (DN = meter size)

Primary head properly grounded and centered

Type/Meter size Maximum error in % of measured value (MV) ...

Curve

DN mm

DN 2.5 – 6(1)

≥ DN 10

inch

/10” –

/4”(1)

DN 2.5 – 6(1)

≥

/8”

≥ DN 10

v ≥ 1 m/s / ≥ 3 ft/s

≤ ± 0.5% of MV

DN 2.5 – 6(1)

≤ ± 0.3% of MV

≥ DN 10

v < 1 m/s / < 3 ft/s

≤ ± (0.4% of MV + 1 mm/s)

≤ ± (0.4% of MV + 0.04 inch/s

≤ ± (0.2% of MV + 1 mm/s)

≤ ± (0.2% of MV + 0.04 inch/s)

Current output same error limits as above, additionally ± 10 µA

Reproducibility and

repeatability 0.1% of MV, minimum 1 mm/s / 0.04 inch/s at constant flow

External influences t

ypical values maximum values

Ambient temperature

Pulse output < 0.003% of MV (2) 0.015% of MV (2)

Current output < 0.013% of MV (2) 0.025% of MV (2)

Power su

pply < 0.023% of MV 0.055% of MV (2) at 10% variation

Load

< 0.013% of MV 0.025% of MV (2) at max. permissible load,

see Sect. 10.4

(1) IFM 6080 K and IFS 6000 F (DN 2.5 – 4 and 1/10 – 1/6”) additional error ± 0,3% of MV

(2) All Krohne signal converters undergo burn-in tests, duration minimum 20 hours at varying ambient temperatures

– 20 to + 60°C/– 4 to + 140°F. The tests are controlled by computers.

}

per 1 K / 1.8°F variation

0 1.6 3.2 6.4 32 36 40 v [ft/s]

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 77 78 79

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ADC 410F Instruções de Operação Página 71

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