YOKOGAWA FLXA21 User Manual

<1. INTRODUCTION AND GENERAL DESCRIPTION>
1-11
IM 12A01A02-01E 8th Edition : Oct. 01, 2015-00
Type of protection
II 1G Ex ia IIC Ga
Group: II
Category: 1G
T4: for ambient temperature:–20 to 55ºC
Atmosphere pressure: 80 kPa (0.8 bar) to 110 kPa (1.1 bar)
Degree of Protection of the Enclosure: IP66
IECEx Intrinsic safety approval
Applicable standard
IEC 60079-0:2011 Part 0: Equipment - General requirements
IEC 60079-11: 2011 Part 11: Equipment protection by intrinsic safety “i”
IEC 60079-26: 2006 Part 26: Equipment with equipment protection level (EPL) Ga
IEC 60529: 2001 Degrees of protection provided by enclosures (IP Code)
Type of protection
Ex ia IIC Ga
T4: for ambient temperature:–20 to 55ºC
Atmosphere pressure: 80 kPa (0.8 bar) to 110 kPa (1.1 bar)
Degree of Protection of the Enclosure: IP66
ATEX and IECEx
Control Drawing (for 4–20mA Type)
Measuring module 1
Measuring module 2
Sensor 1
Sensor 2
Associated Apparatus
Housing Assembly
FLXA21/FLXA202 Analyzer
Supply
Supply
Non-hazardous AreaHazardous Area
Supply +, Supply –
Ui: 30 V
Ii: 100 mA
Pi: 0.75 W
Ci: 13 nF
Li: 0 mH
-
+
-
+
Measuring Module 1, 2
Type of Measuring Module
pH, SC, DO ISC SENCOM
Uo 11.76 V 11.76 V
5.36 V
Io 116.5 mA 60.6 mA 106.16 mA
Po 0.3424 W 0.178 W 0.1423 W
Co 100 nF 100 nF 31 μF
Lo 1.7 mH 8 mH 0.45 mH
Specic Conditions of Use
- When the enclosure of FLXA21/202 Analyzer is made of aluminum alloy, and when it is
used in an explosive atmosphere requiring equipment of Category 1 G or EPL Ga, the
Analyzer must be installed in such a way that, even in the event of rare incidents, an ignition
source due to impact friction sparks is excluded.
- Precautions shall be taken to minimize the risk from electrostatic discharge of non-metallic
parts of the enclosure or painted parts of the metallic enclosure.
Notes:
1. The associated apparatus must be a linear source.
2. Measuring Module 2 is not necessarily installed. As for ISC module and SENCOM module,
only one module is permitted to be installed at a time.
3. Sensor 1 and Sensor 2 may be simple apparatus or intrinsically safe apparatus.
4. WARNING – POTENTIAL ELECTROSTATIC CHARGING HAZARD – SEE USER’S
MANUAL
1
PH
SC
ISC
DO
SENCOM

YOKOGAWA FLXA21 Specifications

General

Brand	YOKOGAWA
Model	FLXA21
Category	Measuring Instruments
Language	English