Vega Conductive electrodes Bedienungsanleitung PDF herunterladen (Seite 12)

12 Conductive measuring system

Measuring data input (channel)

Number 1 (1 x level detection or

1 x pump control -Min-Max)

Response resistance 1 … 200 kOhm adjustable

Parallel resistance

- for fault monitoring 220 kOhm

Meas. circuit max. 5 V eff, max. 1 mA

Permissible line capacitance 1 x 100 nF or

2 x 70 nF at Min-Max.-control

Switching hysteresis approx. 15 %

Measuring data input, Ex-technical data

Signal circuit in classification intrinsic safety EEx ia IIC

Max. values

-U

10,6 V

-I

8 mA

- P 20 mW

Characteristics linear

Inner effective inductance negligible

Inner effective capacitance negligible

Max. permissible outer inductance 5 mH

Max. permissible outer capacitance 570 nF

The intrinsically safe circuits are reliably galvanically isolated from the not-intrinsically safe

circuits up to a peak value of the nominal voltage of 375 V.

Relay outputs

Number 1

Mode overfill protection (A) and dry run protection (B)

changeable

Contact 1 spdt per output

Contact material AgCdO and Au plated

Turn-on voltage min. 10 mV

max. 250 V AC or 250 V DC

Switching current min. 10 µA

max. 3 A AC or 1 A DC

Breaking capacity max. 750 VA or 54 W

Transistor outputs

Number 1 (synchronuously switching with relay outputs)

Galvanic isolation floating

Turn-on voltage U

= max. 36 V DC

Switching current I

= max. 60 mA

Voltage loss on transistor U

= approx. 1,5 V at I

= 60 mA

Blocking current I

< 10 µA

Integration time

Adjustable 0,2 … 20 s

Product description

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 39 40

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