Name: Universal Contacting Conductivity Analyzers
Brand: Yokogawa
SKU: 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.

Series (2)

Model Code	FLXA21	FLXA202	SC450G
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 Material	Plastic (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 Rating	IP66/ NEMA 4A/ CSA 3S	IP66 (except Canada), Type 4X (except Canada), Type 3S/4X (Canada)	IP66/ NEMA 4A/ CSA 3S
Power Supply	2-wire 24VDC, Loop Powered	2-wire 24VDC, Loop Powered	4-Wire 110-256 VAC, Mains Power
Output Signal	Bi-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 Range	Conductivity: 0 to 2000 mS/cm at 25ºC (77°F) Temperature: -20 to 140ºC (0 to 280°F)
Conductivity	2 µS x K cm^-1 to 200 mS x K cm^-1Accuracy: ±0.5% F.S. 1 µS x K cm^-1 to 2 µS x K cm^-1Accuracy: ±1% F.S.
Resistivity	0.005kΩ/ K cm^-1 to 0.5MΩ/ K cm^-1Accuracy: ±0.5% F.S. 0.5MΩ/ x K cm^-1 to 1MΩ/ x K cm^-1 Accuracy: ±1% F.S.
Temperature	with 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 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

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
Detection method	Frequency, read-pulse position and reference voltage are dynamically optimized.
Input ranges	Conductivity: 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 Signals	Two 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 compensation	Automatic or manual, for temperature ranges. Reference temp.: programmable from 0 to 100°C or 30 to 210°F (default 25°C).
Compensation algorithm	According 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.
Display	Graphical Quarter VGA (320 x 240 pixels) LCD with LED backlight and touchscreen.
Contact Outputs	Four SPDT relay contacts with display indicators. Contact outputs configurable for hysteresis and delay time.
Contact Input	Remote range switching to 10 times the programmed range.
Power Supply	85 to 265 V AC ±10 %, 47 to 63 Hz, maximum consumption 10 VA. 9.16 to 30 V DC ±15 %, maximum consumption 10 W.