YOKOGAWA – Inductive (Torodial, Electrodeless) Conductivity Analyzer

///YOKOGAWA – Inductive (Torodial, Electrodeless) Conductivity Analyzer
  • yokogawa-inductive-torodial-electrodeless-conductivity-analyzer

YOKOGAWA – Inductive (Torodial, Electrodeless) Conductivity Analyzer

One way to make a conductivity measurement is Inductive Conductivity (also called Torodial or Electrodeless). In this type of measurement the sensing elements (electrode coils) of a sensor do not come in direct contact with the process. The Inductive Conductivity method is especially suitable for high conductivity measurements. The analyzer works with a sensor with two toroidal transformers built in. An AC current induces a voltage in the process sample that results in a current in the sample. The strength of this current is proportional to the conductivity of the sample following Ohm’s law.

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Product Description

FLXA21/FLXA202

Features

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

Specifications

Input Specification

Compatible with ISC40 inductive conductivity sensor with integrated temperautre sensors: NTC30k or Pt1000.

Input Range Conductivity: 0 to 2000 mS/cm at 25ºC (77°F)
Temperature: -20 to 140ºC (0 to 280°F)
Repeatability/Linearity ±0.4% F.S. + 0.3 µS/cm
Step Response ≤8 seconds for 90% (for a 2 decade step)
Cable Length Max 60 meters (200 feet). 10 meters (35 feets0 fixed sensor cable + 50 meters (165 feet) WF10 extension cable
Transmission Signal Bi-directional HART digital communication, superimposed on mA (4-20 mA) signal
Temperature Compensation Automatic or manual, for temperature ranges.
Reference temp. programmable from 0-100°C or 30-210°F (default 25°C)
Calibration Semi-automatic calibration using pre-configured OIML (KCl) standard tables, with automatic stability check. Manual adjustment to grab sample.
Display  Black and white, 213 x 160 pixels LCD with a touch screen
Housing IP66/ NEMA 4A/ CSA 3S
IP66 (except Canada), Type 4X (except Canada), Type 3S/4X (Canada)
Environment Ambient Temperature: -20  to 55°C
Humidity: 10 to 90% RH at 40°C (non-condensing)
 Power Supply Ratings; 17 to 40 V DC

ISC450G

Features : 

The EXAxt 450 series builds on the superior functionality of the industry leading Yokogawa EXA series by enhancing the EXA’s proven operation and application flexibility. The ISC450 features a unique accuracy and rangeability, which is only possible through superior sensor design and electronic data processing using a self tuning preamplifier with more than 10 sub ranges with automatic zero adjustment at every range change. Accurate concentration measurement requires accurate temperature compensation and the ISC450 offers three compensation methods from default NaCl compensation to user defined MATRIX compensation for electrolytes where the coefficient varies with Temperature and with Concentration.

The EXAxt is highly intelligent and continuously checks the software, hardware and sensor system for irregularities. Not only will these irregularities be signaled through the main display as well as a signal output according Namur NE43, the transmitter will provide adequate instructions how to solve the errors.

  • uniquely simple touch screen menu structure
  • Unique touch screen operation with menu structure in 7 languages (English, French, German, Italian, Spanish, Portuguese, or Swedish).
  • Enhanced diagnostics, process trending graphics andon-screen logbook for data storage
  • Two mA-outputs and four SPDT relay contacts with display indicators
  • Hart® Communications
  • FM Class 1, Div.2, Group ABCD, T6 for Ta-20 to 55°C
  • IP66/NEMA4X 1/2 DIN enclosure for Field Mounting and Panel Mounting
  • Selectable predefined Temperature Compensation Matrices
  • Percent Concentration Display

Specifications

Input Specification

Compatible with ISC40 inductive conductivity sensor with integrated temperautre sensors: NTC30k or Pt1000.

Input Range Conductivity: 0 to 1999 mS/cm at 25ºC (77°F)
Minimum: 1 µS/cm (at process temperature)
Maximum: 2 S/cm (at process temperature)
Temperature: -20 to 140ºC (0 to 280°F)
Accuracy Conductivity ≤0.5% reading ± 1.0 µS/cm
Accuracy Temperature ≤0.3ºC (0.6ºF)
Step Response ≤4 seconds for 90% (for a 2 decade step)
Cable Length Max 60 meters (200 feet). 10 meters (35 feets0 fixed sensor cable + 50 meters (165 feets) WF10 extension cable
Transmission Signal Two isolated output of 4 to 20 mA DC with common negative. Maximum load 600 Ω. Bi-directional HART digital communicaiton, superimposed on mA1 (4 to 20 mA) signal. Burn up (21.0 mA) or burn down (3.6 mA) to signal failure accorded to NAMUR NE43.
Contact Output Four SPDT relay contact with display indicators
Contact Input Remote range switching to 10 times the programmed range
Temperature Compensation Automatic or manual, for temperature ranges.
Reference temp. programmable from 0-100°C or 30-210°F (default 25°C)
Calibration Semi-automatic calibration using pre-configured OIML (KCl) standard tables, wiht automatic stabilit check. Manual adjustment to grab sample.
Display Graphical Quarter VGA (320 x 240 pixels) LCD with LED backlight and touch screen
Housing Cast Aluminim housing with chemically resistance coating; Polycarbonate cover with Polycarbonate flexible window.
Protection IP66/ NEMA4X/ CSA Type 3S
Environment Ambient Temperature: -20  to 55°C
Humidity: 10 to 90% RH at 40°C (non-condensig)
 Power Supply ISC450G-A:
Ratings: 100 to 240 V AC
Acceptable Range: 90 to 260 V AC
Ratings: 50/60 HZ
Acceptable Range: 50 HZ ± 5%; 60 HZ ± 5%
Power Consumption: 15 VA

ISC450G-D:
Ratings: 12  to 24 V DC
Acceptable Range: 10.8 to 26.4 V DC
Power Consumption: 10 W

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