Online Chromium Analyser
Match the chromium measurand and preparation method to the monitoring objective.
Online Chromium Analyser with 3S
Chromium monitoring may target chromium VI, chromium III or total chromium, depending on the process and reporting requirement. The 3S-CL can be configured with parameter-specific wet chemistry so the required form is treated and measured using a controlled online sequence.
Speciation and total measurement are not interchangeable, and sample preparation can be decisive. PMA therefore reviews the chromium form, expected concentration, water matrix and any solids or colour before confirming a suitable 3S configuration. Explore the 3S-CL colorimetric analyser, review 3S applications or discuss sample preparation with PMA Support.
Repeatable online chromium measurement in a compact analyser
The programmed sequence handles the sample and reagents automatically, allowing operators to review chromium results and analyser status through the integrated touchscreen.
01 / CHROMIUM METHOD
Parameter-specific chromium measurement
The configured 3S-CL runs a parameter-specific wet-chemistry sequence for chromium, with the exact chemistry and range selected for the sample and monitoring objective.
- Parameter-specific wet-chemistry sequence
- Freely programmable analysis frequency
- Automatic result calculation
02 / AUTOMATIC ROUTINES
Calibration, validation and cleaning
Automatic routines can be scheduled at selectable intervals to support repeatable chromium monitoring between planned maintenance visits.
- Automatic calibration
- Automatic validation
- Automatic cleaning
Chromium analyser information
Core 3S-CL information for chromium method and installation review. The final chemistry, range and sample arrangement should be confirmed for the application.
Flexible installation
Wall or rack mounting is supported in the standard vertical arrangement.
Defined sample handling
A pressure-free sample reservoir presents flow to the analyser.
Process integration
Analog outputs and Modbus RTU RS485 support plant integration.
Operator records
The integrated datalogger supports USB result export.
Designed for practical chromium monitoring
The 3S separates its electronic and wet compartments while keeping chromium results, analyser status and configuration accessible through the colour touchscreen.
Touchscreen
Review chromium results, status information and analyser functions.
Automatic routines
Calibration, validation and cleaning run at selectable intervals.
Separate compartments
Electronic and wet-chemistry sections are physically separated.
Low reagent use
Reagent consumption is confirmed for the selected chemistry and programmed analysis frequency.
Chromium analyser technical specifications
Core 3S-CL information for specification and application review.
| Measured parameter | Chromium |
| Measurement principle | Parameter-specific colorimetric method using spectroscopic colour-development measurement |
| Measuring variables | Chemistry and range selected for the approved application |
| Analysis frequency | Approximately 6–20 minutes, depending on the selected parameter and chemistry |
| Power supply | 110–230 VAC, 50/60 Hz, 80 VA; optional 24 VDC |
| Operating conditions | 5–45°C; maximum 85% RH |
| Cabinet and protection | Epoxy-coated stainless steel; IP54 |
| Sample streams | One or two, with further expansion available through an optional sequencer |
| Outputs | 2 × 4–20 mA; Modbus RTU RS485 |
| Automatic functions | Calibration, validation and cleaning |
Parameter-specific chemistry, range and performance should be confirmed against the latest approved 3S documentation before procurement.
Discuss Your Chromium Measurement
Specify whether chromium VI, chromium III or total chromium is required, plus the anticipated range and sample characteristics. Visit PMA, compare the PMA 3S product information, or read how a configurable colorimeter can help reduce operating expenditure.
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