
Specs at a glance
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Measuring range
0.5 to 1 000 μg/l (ppb)
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Process temperature
< 50 °C (122 °F)
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Process pressure
max. 0.5 bar (7.25 psi)
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Measuring method
TOC determination by UV digestion and measurement of the differential conductivity
Field of application
Total organic carbon (TOC) content strongly influences the quality of ultrapure water. A high TOC concentration can cause damage of water purification systems or compromise the required water quality. The CA78 online TOC analyzer provides continuous, accurate TOC monitoring ensuring consistently high quality of the ultrapure water used in your production processes. You gain full control of your product yield and quality.
The CA78 TOC analyzer is perfectly suited to TOC monitoring of ultrapure water in the following industries:
Power & Energy
Semiconductor production
Bodycare
Disinfectant production
With the following process conditions:
Conductivity: 2 µS/cm (standard), 10 µS/cm (order option)
pH range: Neutral
Benefits
Real-time overview of water quality:
The online TOC analyzer measures continuously with a fast response time (t90) of 50 seconds. This enables you to react immediately to potential water contamination and to protect your product effectively.CA78 uses proven UV oxidation and differential conductivity measurement which is the most-established method for reliable TOC trace analysis in ultrapure water.
The analyzer's maintenance-friendly design in combination with our worldwide service network offers you complete support for the measuring point, from commissioning throughout the entire lifespan of the device.
Perfect adaption to your process needs:
Select between the high-precision 2 µS/cm conductivity version and the robust version that tolerates 10 µS/cm. Reduce your investment costs by the optional 3 channel configuration.
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
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Simplicity
Variable |
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Measuring principle
Differential conductivity
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Characteristic
Total carbon (TOC) analyzer for trace levels
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Measuring method
TOC determination by UV digestion and measurement of the differential conductivity
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Size
Housing:
500 x 290 x 200 mm
19.68 x 11.41 x 7.87 in -
Design
Stainless steel housing;
IP 42 (standard), IP54 (optional) -
Process temperature
< 50 °C (122 °F)
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Ambient temperature
10 to 45 °C (50 to 113 °F)
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Process pressure
max. 0.5 bar (7.25 psi)
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Sample flow rate
Min. 5 ml/min (0.17 fl.oz/min)
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Consistency of the sample
max. conductivity 2 μS/cm, optional: max. 10 μS/cm; particle free
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Specials
UV reactor with continuous function monitoring
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Application
Determination of total carbon in ultrapure water applications, e.g. in the power or semiconductor industry, that meet the following conditions:
Conductivity < 10 μS/cm
pH range: neutral -
Power supply
100/240 V AC, 47 - 63 Hz
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Output / communication
0/4 to 20 mA, galvanically isolated
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Input
1 to optional 3 measuring channels
Optinonal control input 24 V (for 1 channel instruments) -
Measuring range
0.5 to 1 000 μg/l (ppb)
Choose from our suggested options
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Process Connection
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Prices per piece
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- Optional add-ons
Individual configuration
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