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  • Universal Contacting Conductivity Analyzers FLXA21, FLXA202, SC450G

Universal Contacting Conductivity Analyzers FLXA21, FLXA202, SC450G

2016-05-27 13:00:04

Description:

One way to make a conductivity measurement is called contacting conductivity. In this type of measurement the sensing elements come in contact with the process so the sensors are called contacting electrodes. The conductivity is measured by applying an alternating electrical current to the sensor electrodes (that together make up the cell constant) immersed in a solution and measuring the resulting voltage. The solution acts as the electrical conductor between the sensor electrodes.……

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Description

Universal Contacting Conductivity Analyzers

One way to make a conductivity measurement is called contacting conductivity. In this type of measurement the sensing elements come in contact with the process so the sensors are called contacting electrodes. The conductivity is measured by applying an alternating electrical current to the sensor electrodes (that together make up the cell constant) immersed in a solution and measuring the resulting voltage. The solution acts as the electrical conductor between the sensor electrodes.

Model CodeFLXA21FLXA202SC450G
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)*FM/CSA Pending

  • Class I Div I (with the use of IS Barrier)*FM/CSA Pending

  • General Purpose

  • Class I Div II

Enclosure MaterialPlastic (Polycarbonate)Aluminum alloy die cast with epoxy coating (Standard offering
Aluminum alloy die cast with urethane or high anti corrosion coating (available upon request)		Cast Aluminum with chemically resistance coating; polycarbonate cover with polycarbonate flexible window
Housing RatingIP66/ NEMA 4A/ CSA 3SIP66 (except Canada), Type 4X (except Canada), Type 3S/4X (Canada)IP66/ NEMA 4A/ CSA 3S
Power Supply2-wire 24VDC, Loop Powered2-wire 24VDC, Loop Powered4-Wire 110-256 VAC, Mains Power
Output SignalBi-directional HART digital communication, superimposed on mA (4-20mA) signal.Bi-directional HART digital communication, superimposed on mA (4-20mA) signal.Two isolated outputs of 4 to 20 mA DC with common negative.

The model FLEXA® two-wire analyzer is used for continuous on-line measurements in industrial installations. It offers an option for single or dual sensor measurement, making it the most flexible 2-wire analyzer available. The model FLEXA® modular-designed series analyzer.

  • One analyzer can accept any of 4 types of measurements; pH/ORP, Contacting Conductivity (SC), Inductive Conductivity (ISC) and Dissolved Oxygen (DO)

  • Dual sensor measurement on a 2-wire type analyzer pH/ORP and pH/ORP, SC and SC, and DO and DO

  • Modular design: replaceable sensor modules

  • Redundant system on dual sensor measurement

  • Variety of materials of construction: SS or Plastic

  • Intuitive easy touch screen operation on 2-wire type analyzer

  • Unique HMI menu structure in 12 languages

  • Quick setup menu for fast and east measurement operation

  • Online Sensor Wellness checking for predictive maintenance

  • NEMA 4X / IP66 Enclosure

Input Specification

Two or four electrode measurement with square wave excitation, using max. 60 m cable and cell constants from 0.005 to 50.0 cm-1

Input RangeConductivity: 0 to 2000 mS/cm at 25ºC (77°F) 
Temperature: -20 to 140ºC (0 to 280°F)  
Conductivity2 µS x K cm-1 to 200 mS x K cm-1
     Accuracy:  ±0.5% F.S. 
 1 µS x K cm-1 to 2 µS x K cm-1     
      Accuracy:  ±1% F.S. 
Resistivity0.005kΩ/ K cm-1 to 0.5MΩ/ K cm-1
     Accuracy:  ±0.5% F.S.
0.5MΩ/ x K cm-1 to 1MΩ/ x K cm-1
     Accuracy:  ±1% F.S. 
Temperaturewith Pt1000, Pb36, Ni 100
     Accuracy: ± 0.3ºC
with Pt100, NTC 8k55
      Accuracy: ± 0.4ºC
Step Response≤7 seconds for 90% (for a 2 decade step)
Cable LengthMax 60 meters (200 feet). 10 meters (35 feets0 fixed sensor cable + 50 meters (165 feet) WF10 extension cable
Transmission SignalBi-directional HART digital communication, superimposed on mA (4-20 mA) signal
Temperature CompensationAutomatic or manual, for temperature ranges.
Reference temp. programmable from 0-100°C or 30-210°F (default 25°C) 
CalibrationSemi-automatic calibration using pre-configured OIML (KCl) standard tables, with automatic stability check. Manual adjustment to grab sample.
DisplayBlack and white, 213 x 160 pixels LCD with a touch screen
HousingIP66/ NEMA 4A/ CSA 3S
IP66 (except Canada), Type 4X (except Canada), Type 3S/4X (Canada)
EnvironmentAmbient Temperature: -20  to 55°C
Humidity: 10 to 90% RH at 40°C (non-condensing)
 Power SupplyRatings; 17 to 40 V DC 
Input specificationTwo or four electrode measurement with square wave excitation, using max. 60 m cable and cell constants from 0.005 to 50.0 cm-1
Detection methodFrequency, read-pulse position and reference voltage are dynamically optimized.
Input rangesConductivity: 0.000 μS/cm to 2000 mS/cm
 Minimum: 1 μS/cm (underrange 0.000 μSx C).
 Maximum: 200 mS/cm (overrange 2000 mS x C).
Resistivity: 0.0 Ω x cm to 1000 MΩ x cm
 Minimum: 5 Ω x cm (underrange 0 Ω/C).
 Maximum: 1 MΩ x cm (overrange 1000 MΩ/C).
Temperature:  Pt1000: -20 to 250°C (0 to 500°F)
 Pt100 and Ni100: -20 to 200°C (0 to 400°F)
 NTC 8k55: -10 to 120°C (10 to 250°F)
 Pb36 NTC: -20 to 120°C (0 to 250°F)
Conductivity/Resitivity Accuracy≤0.5 % of reading
Temperature Accuracy≤0.3°C (≤ 0.4°C for PT100)
Step Response≤4 sec for 90 % (for a 2 decade step)
Transmission SignalsTwo isolated outputs of 4 to 20 mA DC with common negative. Maximum load 600 Ω. Bi-directional HART digital communication, superimposed on mA 1 (4 to 20 mA) signal. Burn up (21.0 mA) or Burn down (3.6 mA) to signal failure accorded with NAMUR NE43.
Temperature compensationAutomatic or manual, for temperature ranges.
Reference temp.: programmable from 0 to 100°C or 30 to 210°F (default 25°C).
Compensation algorithmAccording IEC 60746-3 NaCl tables (default).
Two independent user programmable temperature coefficients, from 0 to 3.5 %/°C (°F) by adjustment or calibration.
Matrix compensation: with conductivity function of concentration and temperature. Choice out of 13 preprogrammed matrixes.
DisplayGraphical Quarter VGA (320 x 240 pixels) LCD with LED backlight and touchscreen.
Contact OutputsFour SPDT relay contacts with display indicators.
Contact outputs configurable for hysteresis and delay time.
Contact InputRemote range switching to 10 times the programmed range.
Power Supply85 to 265 V AC ±10 %, 47 to 63 Hz, maximum consumption 10 VA.
9.16 to 30 V DC ±15 %, maximum consumption 10 W.