Profibus Conductivity Transmitter/Analyzers

PROFIBUS is an open, digital communication system which covers factory and process automation. These analyzers are designed for 2-wire (loop powered) system configuration with PROFIBUS communication.

Model Code	FLXA21-D-P-D-AA-C1-NN-P	Not available at this time	FLXA21-D-P-D-AA-C5-NN-P	Not available at this time
Area Classification	General Purpose	Class I Div II (without the use of IS Barrier) Class I Div I (with the use of IS Barrier)	General Purpose	Class I Div II (without the use of IS Barrier) Class I Div I (with the use of IS Barrier)
Measurement Type	Contacting Conductivity, Resistivity		Inductive, Torodial, Non-Contacting Conductivity
Enclosure Material	Plastic (Polycarbonate)

Flexibility, reliability and low maintenance are among the benefits provided by the FLXA21 conductivity analyzer. Designed to meet the particular requirements of measuring conductivity and resistivity in the modern industrial environment, it contains many features to ensure the best precision whatever the application.

The transmitter is housed in a robust IP66 field mountable case and combined with the easy and clear LCD makes the FLXA21 a complete industrial transmitter. The logbook can be used to record events like calibrations and diagnostic messages. A wide variety of temperature compensation possibilities (NaCl according to IEC 746-3, manual TC, preprogrammed matrices and a free programmable 5x5 matrix), provide a high-accuracy measurement with a minimum effort. The addition of a USP23 pure water monitoring feature also makes the FLXA21 suitable for the pharmaceutical industry.

Yokogawa has implemented three leading process Fieldbus technologies in their FLXA21 series: HART, Foundation Fieldbus H1 and Profibus PA. All transmitters are provided with the important and widely used Device Description files that provide information on parameters and other data in each device, as well as the ability to include algorithmic relationships such as calibrations.

Universal conductivity/resistivity, software switchable
On-line sensor checking
Event logbook in software
Matrix temperature compensation for pure water applications
Password protection for all levels of software
Intrinsically safe version and non-incendive versions
Pharmaceutical pure water monitoring (USP23)
Autoranging from 0.01 µSxC.C to 200mSxC.C.
HART, Foundation Fieldbus, or Profibus Communications options
Extremely wide measuring range (> 6 decades) while maintaining a high resolution and accuracy using only one sensor type.
Free programmable setting of the output range, including a 21-step table output to linearize the output function e.g. to % by weight.
Programmable % by weight display indication.
Can be password protected

Input specifications	Two or four electrode measurement with square wave excitation. Cell constant from 0.008 to 50.0 cm-1; ; Yokogawa ISC40 Sereis Inductive Sensor
Detection method	Frequency, read-pulse position and reference voltage are dynamically optimized.
Input ranges	Conductivity: Minimum: 0 μS/cm Maximum: 200 mS x C (overrange 1999 mS/cm). Resistivity: Minimum: 0.005 kΩ/C Maximum: 999 MΩ x cm Temperature: Pt1000: -20 to 250°C (0 to 500°F) Pt100 and Ni100: -20 to 200°C (0 to 400°F) 8k55 NTC: -10 to 120°C (10 to 250°F) PB36 NTC: -20 to 120°C (0 to 250°F)
Contacting Conductivity	Accuracy: ±0.5 % F.S. (1 μS x K cm-1 to 200 mS x K cm-1); Accuracy: ±1 % F.S. (1 μS x K cm-1 to 2 μS x K cm-1)
Resistivity	Accuracy: ±0.5 % F.S. (0.005 kΩ/K cm-1 to 0.5 MΩ/K cm-1); Accuracy: ±7 % F.S. (0.5 MΩ/K cm-1 to 1 MΩ/K cm-1)
Temperature	Accuracy: ±0.3°C (Pt1000, PB36NTC, Ni100); Accuracy: ±0.4°C (Pt100, NTC8k55)
Inductive Conductivity	Output span is 0-100 μS or more Linearity±(0.4 % FS + 0.3 μS/cm) Repeatability±(0.4 % FS + 0.3 μS/cm)
Step Response	≤8 seconds for 90 % (for 2 decade step)
Output Span	Conductivity: Min. 0.01 μS/cm, Max. 1999 mS/cm. (Max 90 % zero suppression) Resistivity: Min. 0.001 kΩ x cm, Max. 999 MΩ x cm. (Max 90 % zero suppression)
Transmission Signals	Isolated output of 4 to 20 mA DC. Burn up (21 mA) or Burn down (3.6 mA when HART or distributor comm. is non-used, 3.9 mA when HART or distributor comm. is used) or pulse of 21 mA to signal failure.
Temperature compensation	Automatic, for temperature ranges Reference temp.: programmable from 0 to 100°C or 30 to 210°F (default 25°C).
Compensation algorithm	Automatic, for temperature ranges Reference temp.: programmable from 0 to 100°C or 30 to 210°F (default 25°C). NaCl according to IEC 60746-3 tables. Two T.C. setting possible between 0.00 to 3.50 %/°C Matrix: user selectable/configurable. Reference temperature adjustable between -20 to 140°C
Communications	PROFIBUS-PA
Ambient temperature	-20 to 50 °C
Humidity	10 to 90 % RH (Non-condensing)
Display	Black/White 213 x 160 pixels LCD with touch screen
Power supply	Nominal 24 volt DC loop powered system.

Profibus Conductivity Transmitter/Analyzers

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Profibus Conductivity Transmitter/Analyzers