2 SPECIAL CONDITIONS
12
OPTIMASS / 400
www.krohne.com 10/2022 - 4003491806- AD OPTIMASS 400 Atex R06 en
2.4 Converter orientation (compact version)
DO NOT rotate the converter housing on the meter stem. Rotating the converter housing can
cause damage to the internal wiring.
2.5 Temperature limits
2.5.1 Introduction
Because of the effect that the process temperature has on the meter, mass flow sensors and
compact mass flow meters are not given a fixed temperature class. The tables in this section
give details of the temperature class for each meter.
Notes
• Make sure that the flowmeter is installed and operated as shown in the relevant Handbook.
• Make sure that the flowmeter is not exposed to a source of heat (for example direct sunlight
or heat from adjacent equipment) that causes the ambient temperature to rise above the
ambient temperature range for the meter.
• Make sure that insulation is not preventing ventilation of the meter housing.
2.5.2 Heating jacket / insulation
On compact meters with a process temperature above 130°C and where a heating jacket is fitted,
you must also use thermal insulation with a maximum depth of 50mm.
2.5.3 Compact configuration
When a compact meter configuration is selected, the converter housing material affects the
temperature range of the meter. For converter housing material codes, please refer to the
converter VE code section.
DANGER!
Damage to the internal wiring could effect the Ex integrity of the meter.
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