Explosion Proof Type Instrument; Atex - YOKOGAWA ADMAG AXR User Manual

14. EXPLOSION PROOF TYPE
INSTRUMENT
In this section, further requirements and differences
for explosion proof type instrument are described.
NOTE
When describing the model name like
AXRC in this manual, "" means any
of following.
025, 040, 050, 065, 080, 100, 150, 200
WARNING
Magnetic flowmeters with the model name
AXR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
instruments. Sufficient care must be taken,
as any violation of the limitations may cause
dangerous situations.
Be sure to read this chapter before handling the
instruments.
For explosion proof type instrument, the
description in this chapter is prior to other
description 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
(nominal size 3).
The covers of explosion proof type products are
locked. Use this 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 after tightening the
cover.
<14. EXPLOSION PROTECTED TYPE INSTRUMENT>

14.1 ATEX

Only trained persons use this instrument in
industrial locations.
(1) Technical Data
Applicable Standard:
EN 60079-0: 2012 + A11:2013,
EN 60079-1: 2014, EN 60079-7: 2015 + A1: 2018,
EN 60079-11: 2012, EN 60079-31: 2014
Certificate: DEKRA 11ATEX0144
Type of Gas Atmosphere Protection
Type of Protection:
Group: II
Category: 2G
Ex db e ia IIC T6...T4 Gb
Specification of Protection:
Electrode Circuit: Um=250V
Power Supply/Current Output:
42Vdc max., 4 to 20mA, Um=250V
Digital Output: ON; 2Vdc, 120mA max.,
Excitation Circuit: 29 V max.
Enclosure: IP66/IP67
Process Temperature:
Temperature
Ambient Temp.: –30°C to +55°C
Type of Dust Atmosphere Protection
Type of Protection:
Group: II
Category: 2D
Ex tb IIIC T90°C, T110°C, T130°C Db
Specification of Protection:
Electrode Circuit: Um=250V
Power Supply/Current Output:
42Vdc max., 4 to 20mA, Um=250V
Digital Output: ON; 2Vdc, 120mA max.,
Excitation Circuit: 29 V max.
WARNING
OFF; 30Vdc max., 4mA,
Um=250V
Maximum Process
Class Temperature
T6 +70°C (+158°F)
T5 +85°C (+185°F)
T4 +130°C (+266°F)
(–22°F to +131°F)
OFF; 30Vdc max., 4mA,
Um=250V
14-1
Minimum Process
Temperature
–30°C (–22°F)
–30°C (–22°F)
–30°C (–22°F)
IM 01E30D01-01EN