Wika IPT-11 Manual do Utilizador descarregar pdf (Página 44)

Fulﬁlled NAMUR recommendations NE 43

Dynamic behaviour output

Run-up time approx. 10 s

90 %

100 %

10 %

Fig. 20: Sudden change of the process variable, dead time t

, rise time t

and step response time t

1 Process variable

2 Output signal

Dead time ≤ 150 ms

Rise time ≤ 100 ms (10 … 90 %)

Step response time ≤ 250 ms (ti: 0 s, 10 … 90 %)

Damping (63 % of the input variable) 0 … 999 s, adjustable

Input variable

Adjustment

Adjustment range of the min./max. adjustment relating to the nominal measuring range:

- Min. -5 … +95 %

- Max. -5 … +105 %

Adjustment range of the zero/span adjustment relating to the nominal measuring range:

- zero -5 … +95 %

- Span -5 … +105 %

Recommended max. turn down 10 : 1 (no limitation)

Nominal measuring ranges and overload resistance

Nominal range Overload, max. pressure Overload, min. pressure

Gauge pressure

0 … 0.4 bar/0 … 40 kPa 2 bar/200 kPa -1 bar/-100 kPa

0 … 1.6 bar/0 … 160 kPa 10 bar/1000 kP a -1 bar/-100 kPa

44 Process pressure transmitter IPT-1* Vers. 3.0 - metalic sensor • 4 … 20 mA/HART

10 Supplement

31543-EN-090130

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Wika IPT-11 Manual do Utilizador Página 44