WIKA DIH62 - Handbuch (Seite 27)

WIKA operating instructions models DIH50, DIH52, DIH62 27
GB
14008548.02 03/2012 GB/D
9.4 Specific conditions for safe use model DIH62-I (plastic case)
The device is not suitable for zone 0.
Electrostatic charges must be avoided when cleaning the device.
The surfaces of the plastic case are not conductive. The field indicator must be installed in
a way to prevent any electrostatic charges.
For the installation drawings with the relevant Ex parameters, see appendix 3
"Installation drawing ATEX/IECEx"
Intrinsically safe supply and signal circuit (models DIHxx-B, DIHxx-NT)
(4 ... 20 mA loop; terminal ⊕ and ⊖)
Parameters Model DIH50 Models DIH52, DIH62
Voltage Ui /U0 29 V 29 V 27.5 V 26 V
Strenght of current Ii/I0 100 mA 100 mA 115 mA 131 mA
Power Pi 660 mW 680 mW
Effective internal capacitance Ci 12 nF 12 nF
Effective internal inductance Li 2.2 μH 2.2 μH
According to the temperature class, these field indicators may only be used in the following
ambient temperature ranges:
Application Ambient temperature
range
Temperature
class
Power P
i
DIH50 DIH52, DIH62
Group II {-50} 1) -40 °C ≤ Ta ≤ +85 °C T4 <660 mW <680 mW
{-50} 1) -40 °C ≤ Ta ≤ +75 °C T5 <660 mW <680 mW
{-50} 1) -40 °C ≤ Ta ≤ +55 °C T6 <660 mW <680 mW
Dust Ex {-50} 1) -40 °C ≤ Ta ≤ +70 °C n.a. <630 mW <650 mW
{-50} 1) -40 °C ≤ Ta ≤ +40 °C n.a. <660 mW <680 mW
n. a. = not applicable
1) The value in brackets applies for specific low-temperature designs
9.5 Specific conditions for safe use of models DIH50-F, DIH52-F
Cables, insertions and blind plugs must be suitable for the corresponding operating
temperature. You must therefore check in the application case (e.g. ambient temperature
plus 5 K) whether the components used are suitable. The instruments may not be opened
while they are under voltage.
Observe the warnings on the instruments:
"WARNING! - do not open while under voltage"
9. Information on mounting and operation in hazardous areas