ECD

CA6 Zinc Analyzer

Compact online colorimeter for the automatic measurement of dissolved Zinc in water

The determination ranges of the CA6 Zinc Analyzer vary from trace μg/L to 125 mg/L Zn2+ using internal dilution module
2 x 4-20 mA outputs for measured data Modbus RTU RS485
Automatic calibration, validation and cleaning, with colour touchscreen and USB datalogger

Quantity

Overview

The Model CA-6 Zinc Analyzer is an automated online system for continuous water monitoring, using colorimetric analysis with an LED light source and a heated reaction cell. Its dual-enclosure design keeps the top electrical section completely isolated from the bottom liquids section.

During operation, the system performs a smart reference measurement after adding initial reagents to eliminate background sample color, turbidity, and refractive index variations. It then adds color-producing reagents, mixes the sample, takes the final reading to calculate concentration, and automatically drains and rinses the cell between cycles.

The CA-6 can also be configured to measure: Aluminum, Ammonia, Chlorine, Chloride, Chromium VI, Copper, Cyanide, Hardness, Iron, Manganese, Nickel, Nitrate, Nitrite, Phosphate, Total Phosphate, Silica, Sulfate, Zinc.

Typical Applications

Drinking water
Industrial waste water
Effluent water
Surface water
Boilers and cooling towers

Key Features

Wide Measuring Range: Measures from trace µg/L up to 125 mg/L $\text{Zn}^{2+}$ using the internal dilution module
Color Touchscreen Interface: Features an intuitive graphic display with multi-language support, easy menu access, and a USB datalogger
Automatic Calibration & Cleaning: Automated validation, cleaning, and calibration reduce downtime and ensure accuracy
Multiple Streams: Supports dual streams natively, with expansion up to 4 streams using an external sequencer

Benefits

Dual-Compartment Enclosure: Ensures complete physical separation between the electronics and the wet part
Low Reagent Consumption: Minimizes operating costs with low reagent usage—only 1.1 L (0.29 US gal) for the 16 mm cell or 2.0 L (0.53 US gal) for the 26 mm cell of each reagent every 30 days at a 15-minute analysis frequency
Factory Tested, Ready for Installation and Operation: Fully operational right out of the box—just connect the power, sample, and reagent lines

Typical Applications

MEASUREMENT
Measured parameter	Zn2+ (ppb, ppm, mg/l
Measuring principle	Differential photometric absorbance. Zincon method
Measuring range	0.01 to 1 ppm Zn2+ for the 26 mm cell 0.02 to 2.5 ppm Zn2+ for the 16 mm cell up to 125 ppm Zn2+ with internal dilution
Reproducibility	± 10 ppb or ± 5%, whichever is greater (26 mm cell) ± 20 ppb or ± 5%, whichever is greater (16 mm cell)
Analysis frequency	Freely programmable, batch near-continuous analysis
Cycle time	6-8 minutes, including conditioning before analysis cycle and rinsing after measuring
Reaction cell	Temperature heated

SAMPLE & STREAMS
Sample	Pressure-free from overflow vessel Temperature: 41 - 122 °F (5 to 50 °C) Flow Rate: 80 to 500 mL/min Connection: 6 mm (¼-in.)
Drain	Pressure-free, atmospheric drain Connection: 12 mm (½-in.)
Number of streams	1, 2 with integrated switching valve 3, 4 with external sequencer
Reagent consumption	1.1L (0.29 US gal) for the 16 mm cell / 2.0L (0.53 US gal) for the 26 mm cell of each reagent every 30 days with 15 minute analysis frequency

ELECTRICAL
Power supply	Voltage: 100 - 240 VAC 50/60 Hz standard or 24 VDC (option) Power consumption: max. 80 VA
Outputs	2 x 4-20 mA outputs for measured data Modbus RTU RS485
Alarms	4 SPDT programmable potential free relays
Digital input	Remote start / stop
User interface	Colour graphic touchscreen, multiple languages, integrated datalogger with USB download

PHYSICAL & ENVIRONMENTAL
Dimensions (H x W x D)	23.6 x 15.0 x 8.2 in / 606 x 380 x 209 mm
Weight	Approx. 44 lbs (20 Kg)
Operating temperature	41 - 113 °F (5 - 45 °C)
Humidity	10 to 90% non-condensing (indoor use, outdoor installation only possible with protective cabinet or shelter not included)
Installation	Wall mount (standard), bench top support or panel mount (options)
Ingress protection	IP54