WIKA DIH62 - Handbuch (Seite 11)

WIKA operating instructions models DIH50, DIH52, DIH62 11
GB
14008548.02 03/2012 GB/D
Basic module Models DIH50-Z, DIH50-B, DIH52-Z, DIH52-B, DIH62-Z, DIH62-B
Material Polycarbonate
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 model DIHxx 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
Versions
Model DIHxx-Z
Basic module without field case, no Ex protection
Model DIHxx-B Basic module without field case, Ex protection (intrinsically safe)
Model DIHxx-S Field indicator, no Ex protection (standard)
Model DIH5x-F Field indicator, Ex protection (flameproof enclosure)
Model DIHxx-I Field indicator, Ex protection (intrinsically safe)
Model DIHx0 HART ® slave (standard)
Model DIHx2 HART ® master
3. Specifications / 4. Design and function