FISCHER FT90 - Product and Functional Description; Delivery Scope; Intended Use; Explosion Hazard Area Classification

FISCHER Mess- und Regeltechnik GmbH Product and functional description | 2
BA_EN_FT90 9/108
2 Product and functional description
2.1 Delivery scope
• Differential pressure transmitter FT90 PRO-LINE
®
Version as stated on the type plate with an integrated assembly rail. Attach-
ment screws are not included in the delivery.
• Operating manual
2.2 Intended use
The FT90 is suitable for the measurement of humidity and temperature in neut-
ral gaseous media. Optionally, the device can be used to measure the pressure,
negative pressure, or differential pressure of neutral gaseous media.
Note the specifications in the technical data with regard to media compatibility.
The device may only be used for the purpose stipulated by the manufacturer.
The manufacturer will not be liable for damage arising from incorrect or im-
proper use.
2.2.1 Explosion hazard area classification
Devices with the order code FT90 ## ## ## # 0 # 000 R1 # # are classified as
electrical equipment for use in potentially explosive areas zone 2 (gases and
vapours) and/or zone 22 (dusts).
Gas explosion protection
Designation as per Directive 2014/34/EU:
II 3G Ex ec IIC T4 Gc
Dust explosion protection
Designation as per Directive 2014/34/EU:
II 3D Ex tc IIIB T125°C Dc
-20°C ≤ T ≤ 60°C
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