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Device description, 8 electrical data – KROHNE H250 M10 ATEX II3D Ex t EN User Manual

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DEVICE DESCRIPTION

8

H250 M10

www.krohne.com

03/2011 - 4001348101- MA H250/M10-Ex-II3G-AD R01 en

For use in areas with flammable dust it should be noted that the indicated maximum surface
temperature of T65°C at an ambient temperature of 60°C / 140°F and a product temperature of
60°C / 140°F is valid without a dust coating. For higher product temperatures the maximum
surface temperature is determined by the product.

2.8 Electrical data

The insulation of the flowmeter is measured according to EN 61010-1:2001. The following
ratings are taken into account:

• Overvoltage category II
• Pollution degree 2 (inside device on printed circuit boards)

Circuit

Rated voltage

Nominal current

Optional switching outputs

NAMUR 8V DC

1mA - 3mA

Open-collector-PNP 24V DC ±

25%

1mA - 100mA

Current output 4-20 mA

24V DC ± 25%

4mA - 20mA

with HART communication

Reset input

9V DC - 30V DC

< 2mA

AD_H250_M10_II3D_R01_en_4001248101_PRT.book Page 8 Wednesday, March 30, 2011 11:44 AM