Safety Instructions: Ex D Joints; Safety Instructions: Zone 0; Explosion Protection With Heat Insulation; Temperature Tables - Endress+Hauser Liquiphant M FTL50 Bedienungsanleitung

XA00031F-I
Safety instructions:
Ex d joints
Safety instructions:
Zone 0
Explosion protection with
heat insulation

Temperature tables

22
• If required or if in doubt: ask manufacturer for specifications.
• Flameproof joints are not intended to be repaired.
• In the event of potentially explosive vapor/air mixtures, only operate the device under atmospheric
conditions.
– Temperature: –20 to +60 °C
– Pressure: 80 to 110 kPA (0.8 to 1.1 bar)
– Air with normal oxygen content, usually 21 % (V/V)
• If no potentially explosive mixtures are present, or if additional protective measures have been
taken, the device may also be operated under non-atmospheric conditions in accordance with the
manufacturer' s specifications.
• Only use the device in media to which the wetted materials have sufficient durability (e.g. process
connection seal).
• When using under non-atmospheric pressures and non-atmospheric temperatures: The sensor part
of the device approved for Zone 0 does not cause any ignition hazards.
Device type FTL70, FTL71, Basic specification, Position 11 (Application) = L, N, Y
• While observing the "temperature derating", the device is suitable for process temperatures up to
300 °C.
• When operating, ensure that you rule out contact between hot component surfaces and potentially
explosive atmospheres beyond the limits of the corresponding temperature class.
Suitable measures: e.g. thermal insulation at container and/or pipes.
• The temperature of 85 °C specified at the reference point may not be exceeded.
• To protect the electronics, observe the specified ambient temperature at the electronics housing.
3
2
1
å 2
T Ambient temperature
a
T Process temperature
p
1 Sensor
2 Temperature class, e.g. T6
3 Housing
4 Reference point: max. +85 °C
5 E.g. thermal insulation
Device type FTL50, FTL50H, FTL51, FTL51H
Device type FTL51C, Basic specification, Position 5, 6 (Probe Length; Type) = xL, xM, xN, xS
Temperature class Process temperature T
Sensor
T6 –50 °C...+75 °C
T5 –50 °C...+90 °C
T4 –50 °C...+125 °C
T3 –50 °C...+150 °C
1) Basic specification, Position 7 (Electronics; Output) = 4
– T6: T = +55 °C and relay current I
a,max
– T5: T = +70 °C and relay current I
a,max
T
a
T
p
(process): Ambient temperature T
p
Electronics
–60 °C...+70 °C
Covers with glass window: –50 °C...+70 °C
–60 °C...+70 °C
Covers with glass window: –50 °C...+70 °C
with temperature separator;
without temperature separator →  3
≤ 4 A
max
≤ 4 A
max
Liquiphant M, Liquiphant S
4
5
FTL5x_7x_11
(ambient):
a
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Endress+Hauser