Temperature Table Compact Version; Gas And Dust Explosion Protection; Design Of Measuring System; Potential Equalization - Endress+Hauser Proline Promass 40 Bedienungs- Und Sicherheitshinweise

0
ATEX II2GD; IECEx Zone 1, Zone 21
Temperature table
compact version
Gas and dust explosion
protection
Design of measuring
system

Potential equalization

20
Max. medium temperature [°C] for T1-T6 in relation to the maximum ambient temperature T
)
Promass 4*E**-************
The minimum medium temperature is –40 °C.
The minimum ambient temperature T
A version for ambient temperatures T
• Determine the temperature class for gas in relation to the ambient T
• Determine the maximum surface temperature for dust in relation to the max. ambient temperature T
max. medium temperature T
Example:
Device: compact version, Promass 40 E, DN 25
Max. ambient temperature: T
a
Promass 4*E**–************
Fig. 3: Procedure for calculating the max. surface temperature
1. In the associated temperature table, the selection of the measuring device (Promass 40 E), the nominal
diameter (DN 25) and the ambient temperature T
temperature can be found.
2. The max. medium temperature T
of a cell, determines the column, or temperature class, for gas (98 °C ≤ 100 °C → T4).
3. The maximum temperature of the calculated temperature class corresponds to the maximum surface
temperature (T4 = 135 °C = maximum surface temperature for dust).
m
Fig. 4: Design of the measuring system, compact/remote version
a Connection compartment cover
b Screw terminal for connecting to the potential equalization
m see following section "Cable entries"
The transmitter is to be securely connected to the potential equalization system using the screw terminal on
the outside of the transmitter housing. Alternatively, the transmitter of the compact version as of serial number
4Axxxxxx000 can be connected to the potential equalization system via the pipeline if a ground connection
via the pipeline according to regulations can be assured.
!
Note!
Further information about potential equalization, shielding and grounding can be found in the associated
Operating Instructions.
T6
DN T
a
(85 °C)
DN 8...15 –
+50 °C
DN 25...50 50
DN 8...50 –
+60 °C
DN 80 60
is –20 °C.
a
up to –40 °C is optionally available.
a
.
M
= 60 °C, max. medium temperature: T
T6
DN T
a
(85°C)
DN 8...15 –
+50 °C
DN 25...50 50
DN 8...50 –
+60 °C
DN 80 60
DN 25 T max = 60 °C
a
(60 °C) determine the line in which the max. medium
a
(98 °C), which is smaller or equal to the max. medium temperature
M
r a
Esc
- +
E
Proline Promass 40
T5 T4 T3
(100 °C) (135 °C) (200 °C) (300 °C)
100 130 140
100 130 140
100 130 140
95 110 140
and medium temperature T
a
= 98 °C
M
T5 T4 T3 T2
(100°C) (135°C) (200°C) (300°C)
100 130 140 140
100 130 140 140
100 130 140 140
95 110 140 140
£
T = 98 °C ( 100 °C)
M
m
b
Endress+Hauser
a
T2 T1
(450 °C)
140 140
140 140
140 140
140 140
.
M
and
a
T1
(450°C)
140
140
140
140
A0013402
A0013403