Wika DPT-10 Manual do Utilizador descarregar pdf (Página 76)

Inﬂuence of the installation position basic

version

≤ 4 mbar

9)10)

A position-dependent zero-point shift can be corrected (see also chapter "General installation

instructions" and "Installation instructions, isolating diaphragm systems").

Deviation determined according to the limit point method according to IEC 60770

11)

Applies to digital interfaces (HART, Proﬁbus PA, Foundation Fieldbus) as well as to analogue

current output 4 … 20 mA. Speciﬁcations refer to the set span. Turn down (TD) is the ratio nominal

measuring range/set span.

Reference accuracy - all versions

The following applies to square root extracted characteristics: The accuracy data of DPT10 are

entered with factor 0.5 in the accuracy calculation of the ﬂow.

Reference accuracy - Basic version

10 mbar, 30 mbar measuring cell

- Turn down 1 : 1 ±0.15 % of the set span

- Turn down > 1 : 1 ±0.15 % of the set span x TD

100 mbar measuring cell

- Turn down 1 : 1 up to 4 : 1 ±0.075 % (±0.05 % ) of the set span

- Turn down > 4 : 1 ±(0,012 % x TD + 0.027) of the set span

Measuring cells ≥ 500 mbar

- Turn down 1 : 1 up to 15 : 1 ±0.075 % (±0.05 %) of the set span

- Turn down > 15 : 1 ±(0.0015 % x TD + 0.053) of the set span

Reference accuracy - Isolating diaphragm versions

100 mbar measuring cell

- Turn down 1 : 1 up to 4 : 1 ±0.075 % (±0.05 % ) of the set span + inﬂuence of

the isolating diaphragm

- Turn down > 4 : 1 ±(0.012 % x TD + 0.027) of the set span + inﬂuence

of isolating diaphragm

Measuring cells ≥ 500 mbar

- Turn down 1 : 1 up to 15 : 1 ±0.075 % (±0.05 %) of the set span + inﬂuence of

the isolating diaphragm

- Turn down > 15 : 1 ±(0.0015 % x TD + 0.053) of the set span +

inﬂuence of the isolating diaphragm

Inﬂuence of the product or ambient temperature

Applies to instruments in basic version with digital signal output (HART, Proﬁbus PA, Foundation

Fieldbus) as well as to instruments with analogue current output 4 … 20 mA. Speciﬁcations refer

to the set span. Turn down (TD) = nominal measuring range/set span.

Instrument is rotated vertically to the diaphragm axis.

10)

For instruments with inert oil, the value doubles.

11)

Incl. non-linearity, hysteresis and non-repeatability.

76 Diﬀerential pressure transmitter DPT10 - metal measuring diaphragm • Proﬁbus PA

11 Supplement

37245-EN-100120

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