10
WIKA operating instructions models DIH50, DIH52
EN
14008548.05 12/2016 EN/DE
Field case
Material Aluminium, stainless steel;
window in polycarbonate
Colour Aluminium: night blue, RAL 5022
Stainless steel: silver
Cable glands 3 x M20 x 1.5 or 3 x ½ NPT
Ingress protection IP66
Weight Aluminium: approx. 1.5 kg
Stainless steel: approx. 3.7 kg
Dimensions see drawing
Basic module Models DIH50-Z, DIH50-B, DIH52-Z, DIH52-B
Material Polycarbonate
Ingress protection IP20
Weight approx. 80 g
Dimensions see drawing
For further specifications see WIKA data sheet AC 80.10 and the order documentation.
For further important safety instructions for operation in hazardous areas, see
chapter 9 “Information on mounting and operation in hazardous areas”.
4. Design and function
4.1 Description
The field indicators are external display and operating units without separate power supply
for 4 … 20 mA/HART
®
sensors. The instruments are used for measured value display and
operation remote from the measuring point. They are looped anywhere in the 4 … 20 mA
signal line and measure the current in the current loop. At the same time, they read and
display the measured values with unit via the HART
®
signal.
The field indicators are powered directly from the 4 ... 20 mA current loop, with a resultant
voltage drop of less than 3 V.
The field indicators meet the requirements of:
■
Explosion protection (depending on the version)
■
Electromagnetic compatibility in accordance with DIN EN 61326 and NAMUR
recommendation NE21
3. Specifications / 4. Design and function
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