Micro 2000 Analyzer for CL2, CLO2, KMNO4

Summary

Product identification

The Micro/2000® residual measurement module is an on-line instrument for continuous measurement of oxidant residuals, usable with SFC or MFC electronic packages. It measures free and total Chlorine, Chlorine Dioxide, or Potassium Permanganate residuals.

Applications

• Measurement of disinfection residuals in potable water treatment.
• Wastewater residual measurement.
• Industrial process water and wastewater.
• Cooling water.

Standard Features

• Accurately measures free and total Chlorine, Chlorine Dioxide or Potassium Permanganate residuals at ranges from 0 - 0.1 to 0 - 20 g/l.
• Suitable for poor water quality applications such as wastewater and cooling water (fresh or seawater source).
• Sensitivity and speed of response down to 1 ppb (0.001 mg/l) utilizing a 3-electrode measurement technology.
• Bare electrode cell design provides high reliability, long-term stability, low maintenance, and minimal chance of fouling.
• Unaffected by varying water quality, changes in turbidity or conductivity.

Key Benefits

• High accuracy measurement of Chlorine, Chlorine Dioxide and Potassium Permanganate Residuals.
• Ability to handle poor water quality without fouling.
• Fast speed of response for control applications and monitoring rapid water quality changes.
• Low sample flow cell design for economical reagent usage.
• Wide choice of field-selectable measurement ranges.
• Separate flow cell and electronic packages for installation flexibility.

Optional Features

• Choice of peristaltic pump speed: 1 rpm for minimal reagent usage, or 2 rpm for quick response in control loops.
• Sample line dosing: A biocide metering pump can be used with integral control software to prevent biofouling of the sample line in wastewater applications.
• Circular chart recorders: Feature chart ranges scaled to match the selected range of the analyzer.

Technical Data

Type of Measurement

Amperometric. Continuously measures and indicates free or total Chlorine residual, Chlorine Dioxide or Potassium Permanganate residuals in potable water, primary, secondary, or tertiary treated wastewater or cooling water.

Accuracy

0.001 mg/l or 1% of full scale, whichever is greater. Analyzer accuracy is dependent on the accuracy of standardizing (calibrating) analytical procedures.

Sensitivity

0.001 mg/l or 1% of full scale, whichever is greater.

Repeatability

0.001 mg/l or 1% of full scale, whichever is greater.

Stability

Under favorable conditions +/- 1% of full-scale for 1 month.

Residual Measurement Ranges

• 0 - 0.10, 0 - 0.20, 0 - 0.50, 0 - 1.0, 0 - 2.0, 0 - 5.0, 0 - 10.0, 0 - 20.0, 0 - 50.0 mg/l
• 0 - 1, 0 - 2, 0 - 2.5, 0 - 5, 0 - 10, 0 - 20 g/l

These ranges are for free or total Chlorine residuals, Chlorine Dioxide, or Potassium Permanganate residual.

Continuous Operating Range

100:1 for each measurement range.

Speed of Response

• 90 sec. with 2 rpm pump motor.
• 180 sec. with 1 rpm pump motor.

(Sample is pumped to cell via an internal peristaltic pump).

Sample Requirements

• Approximately 4 - 19 l/m (1-5 US gpm), depending on application.
• Recommended fluid velocity is 1.5 m/sec (5 ft/sec).
• Maximum pressure 4 bar (60 psi), throttled to less than 0.3 bar (5 psi) at the Y-strainer before the analyzer inlet.
• Measuring cell sample requirements: 0.5 l/m.

Liquid Reagents

A 5 liter (1 gallon in US) bottle of any reagent lasts from 3 - 10 weeks.

• Free chlorine measurement: pH 4 buffer is used where the pH varies.
• Total chlorine measurement: pH 4 buffer and granular KI (potassium iodide) are used.
• For wastewater applications, 175 ml (6 oz) of detergent additive is supplied.
• Potassium Permanganate or Chlorine Dioxide Measurement: In the presence of free chlorine, ammonium sulfate salt is required and can be supplied as an option.

Salinity

Fresh to sea water.

Piping Connections

• 13 mm (1/2”) female NPT sample line.
• 9 mm (3/8”) and 32 mm (1-1/4”) drain hose connections.

Temperature

• Ambient: 2°C (35°F) to 52°C (125°F).
• Sample: -3° C (26°F) to 52° C (125°F).

SFC Electronics

• Monitors and logs data from one Micro/2000 measurement module.
• Controls related dosing equipment.
• Prepared for flow proportional, closed loop, and compound loop control of gas feeder actuators, pumps, and other dosing devices.
• Output contacts: 4 configurable alarm contacts / general fault messages as well as inc/dec control outputs. Max. 5A, 250 VAC, 1250 VA; Max. 5A, 220 VDC, 150 W.
• Analog outputs: 1 available 0/4 to 20 mA, configurable. Load < 500 Ohm, accuracy < 0.5% FS. Galvanically isolated up to 50V relative to earth.
• Interfaces: RS 485 to connect with the Wallace & Tiernan® OPC-Server or Process Monitoring System and Gateways.
• Power Supply: 100 - 240 VAC ±10%, 50 - 60 Hz, 30 VA; 24 VDC ±20%, 15 W.
• Protection Category: IP 66 / NEMA 4X.
• Dimensions (W x H x D): 270 x 147 x 185 mm (10-3/8” x 5-13/16” x 7-1/4”).
• Shipping Weight: 2 kg (4.4 lbs).

MFC Electronics

Includes SFC functionality plus the capability to integrate up to five measurements from the range of sensor modules for the MFC/SFC series.

• Output contacts: 8 configurable alarm contacts / general fault messages as well as inc/dec control outputs. Max. 5 A, 250 VAC, 1250 VA; Max. 5 A, 220 VDC, 150 W.
• Analog outputs: 4 available 0/4 to 20 mA, configurable. Load < 1000 Ohm, accuracy < 0.5% FS. Galvanically isolated up to 50V relative to earth.
• Interfaces: RS 485 to connect with the Wallace & Tiernan® OPC-Server, Process Monitoring System and Gateways.
• Power Supply: 200 - 240 VAC ±10%, 50 - 60 Hz, 30 VA; 100 - 120 VAC ±10%, 50 - 60 Hz, 30 VA; 24 VDC ±20%, 30 W.
• Protection Category: IP 66 / NEMA 4X.
• Dimensions (W x H x D): 320 x 270 x 175 mm (12-5/8” x 10-5/8” x 6-7/8”).
• Shipping Weight: 5.5 kg (12.1 lbs.).

Accessories Furnished

• Y-strainer.
• Manual throttling valve for sample waterline.
• pH test papers.
• Instruction book.
• For potable or cooling water: 15 liters (4 US gallons) of pH 4 buffer.
• For wastewater: 15 liters (4 US gallons) of pH4 buffer and 6 oz. detergent.
• For Chlorine Dioxide or Potassium Permanganate measurement: A 2-month supply of Ammonium Sulfate to screen out free Chlorine interference.

Optional Accessories

• Recorders (supplied with 400-24 hour or 100-7 day circular charts and one year’s supply of fiber tip pens).
• Metering pump for sample line dosing system.
• Amperometric titrator for calibration.
• Sample pump (if sample pressure is less than 0.3 bar; 5 psi).
• Spare reference junction.

Series A-790 Amperometric Titrator

Measures free, combined and total, chlorine residuals as well as potassium permanganate and chlorine dioxide. Used for the calibration of on-line analytical equipment. Suitable for tests in Standard Methods and ASTM Method D-1253.

Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

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