Yokogawa ADMAG AXF - Manual (Page 117)

IM 01E20D01-01E 8-1
8. EXPLOSION PROTECTED TYPE INSTRUMENT
8. EXPLOSION PROTECTED TYPE
INSTRUMENT
In this section, further requirements and differences for
explosion proof type instrument are described.
WARNING
• Magnetic flowmeters with the model name
AXF ٗٗٗC are products which have been
certified as explosion proof type instruments.
Strict limitations are applied to the structures,
installation locations, external wiring work,
maintenance and repairs, etc. of these instru-
ments. Sufficient care must be taken, as any
violation of the limitations may cause danger-
ous situations.
Be sure to read this chapter before handling
the instruments.
For explosion proof type instrument, the de-
scription in this chapter is prior to other descrip-
tion in this user's manual.
For TIIS flameproof type instruments, be sure
to read “INSTALLATION AND OPERATING
PRECAUTIONS FOR TIIS FLAMEPROOF
EQUIPMENT” at the end of this manual.
WARNING
The terminal box cover and display cover is
locked by special screw. In case of opening the
cover, please use the hexagonal wrench at-
tached.
The covers of explosion proof type products are
locked. Use the attached hexagonal wrench to
open and close the cover. Before opening the
cover, be sure to check that the power of
flowmeter has been turned off. Once the cover is
closed, be sure to re-lock the product.
Be sure to lock the cover with the special screw
using the hexagonal wrench attached after
tightening the cover.
8.1 ATEX
WARNING
Only trained persons use this instrument in
industrial locations.
(1) Technical Data
*AXF002C – AXF400C
Applicable Standard:
EN 50014: 1997, EN 50018: 2000,
EN 50019: 2000, EN 50020: 2002,
EN 50028: 1987, EN 50281-1-1: 1998
Certificate: KEMA 03ATEX2435
(Integral Flowmeter)
ATEX Flameproof Type
Group: II
Category: 2G
EEx dme [ia] IIC T6...T3
Electrode Circuit Um: 250 Vac/dc
Maximum power supply voltage: 250 Vac/130 Vdc
Excitation Circuit: 140V max
Enclosure: IP66, IP67
Temperature Class:
T0801.EPS
+70 °C (+158°F)
+85 °C (+185°F)
Temperature
Class
+120 °C (+248°F)
Maximum Process
Temperature
–40 °C (–40°F)
–40 °C (–40°F)
–40 °C (–40°F)
–40 °C (–40°F) T6
Minimum Process
Temperature
T4
T5
T3 +130 °C (+266°F)
Ambient Temp.: –40
°C to +60°C (–40°F to +140°F)
ATEX Type of Protection “Dust”
Group: II
Category: 1D
Electrode Circuit Um: 250 Vac/dc
Maximum power supply voltage: 250 Vac/130 Vdc
Excitation Circuit: 140V max
Enclosure: IP66, IP67