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Technical Specifications
Types of Ignition Protection; Group of Explosion; Class of Temperature
II 1/2G Ex ia IIC T6
–T2 Ga/Gb / II 2D Ex ia IIIC T95 °C Db
II 1/2G Ex ia IIB T6
–T2 Ga/Gb / II 2D Ex ia IIIC T95 °C Db (3A Ausführung)
II 2G Ex ib IIC T6
–T2 Ga/Gb / II 2D Ex ia IIIC T95 °C Db (Bypass Ausführung)
Appliance Group:
II
Appliance Category:
1G (float and slide tube
– standard and pharma design)
2G / 2D(connecting case and bypass design)
Type of ignition protection: Ex ia or Ex ib (bypass design)
Explosive sub-group
IIC or IIB for 3A design
Class of temperature:
T2, T3, T4, T5, T6
Summary of Electrical Specifications of Authorized Design Variants of FFG-T...EX
Auxiliary Energy:
Voltage
Consumption
of Power
Inductivity (extern.
effective):
Capacity (extern.
effective):
Type of Ignition
Protection
10...30V DC
max. 700mW
max. 250
μ
H
max. 5nF
Ex ia
Authorized Specifications of Related Machinery:
U
I
I
i
P
i
L
i
C
i
Type of Ignition
Protection
≤ 30 V
≤ 200 mA
≤ 1 W
≥ 250 μH ≥ 5 nF
Ex ia
Temperatures, Standard and Pharma-compatible Design
Class of
Temperature
Maximum Process
Temperature
Maximum Ambient
Temperature (Sensor
head of level sensor)
Dust
Maximum surface temperature
(Sensor head of level sensor)
Category 1/2
T6
-60°C to 60°C
-40 to +40 °C
T≤ +80°C
T5
-60°C to 80°C
-40 to +55 °C
T4
-60°C to 100°C
-40 to +85 °C
T3
-60°C to 150°C
-40 to +85 °C
T2
-60°C to 150°C
-40 to +85 °C
Category 2
T6
-60°C to 85°C
-40 to +40 °C
T5
-60°C to 100°C
-40 to +55 °C
T4
-60°C to 135°C
-40 to +85 °C
T3
-60°C to 200°C
-40 to +85 °C
T2
-60°C to 250°C
-40 to +85 °C
temperature table 1
Temperatures Level Gauges Design
Class of
Temperatur
e
Maximum
Temperature on FFG-
T...EX Sensor Tube
Maximum Ambient
Temperature (Sensor
head of level sensor)
Dust
Maximum surface temperature
within the range of the zone 21/22
Category 2
FFG..Ex : For use in Ex zone 21 the feed temepature is restricted
to max. 95°C.
T6
-60°C to 85°C*
-40 to +40 °C*
T≤ +80°C
T5
-60°C to 100°C*
-40 to +55 °C*
Maximale. Prozesstemperatur
T4
-60°C to 135°C*
-40 to +85 °C*
T3
-60°C to 200°C*
-40 to +85 °C*
T2
-60°C to 250°C*
-40 to +85 °C*
temperature table 2
