TOC analyzer for continuous analysis of total organic carbon (TOC) in water. Ideal for demanding monitoring tasks. Automatic sample preparation ensures consistent and reliable results, minimizing human error. Additionally, the TOC analyzer can be equipped with a TN (total nitrogen) measuring function, enabling a more comprehensive analysis of water quality. This flexibility makes our TOC analyzer particularly useful in environmental monitoring and in industrial processes where precise control of water parameters is required.
Measurement system for continuous recording of total organic carbon (TOC)
Gröger & Obst GO-TOC P
Online TOC Analyzer
Function
Measurement system for determining total carbon (TC), total organic carbon (TOC), inorganic carbon (TIC) or dissolved organic carbon (DOC) according to DIN 38409 Part 3 / EN 1484 and for the optional determination of total bound nitrogen (TNb) according to DIN 38409 Part 27 in water. The system features automatic sample preparation for process analysis or for manual and automatic single-sample analysis.
Measurement value display
Measurement values are displayed in mg C/l or mg N/l.
How it works
The determination is based on thermal-catalytic oxidation of the water constituents to be analyzed. The quantity is determined in an infrared analyzer. The gases CO₂ for carbon determination and NO for nitrogen determination are measured (see also data sheet “Method of analysis”).
Process analysis is performed with continuous sample water feed and automatic TIC elimination.
For laboratory analysis, samples can be fed manually.
Instrument variants
Instrument variants are configured precisely to your requirements and installation conditions. We provide customized solutions tailored to your specific needs and operating conditions. Just let us know – we will be happy to implement your requirements, as far as they are technically feasible.
Our TOC analysis method
- The GO-TOC analyzers automatically take the required sample volume from a sample stream, a sample tank or a sample changer.
- The sample water is acidified to approximately pH 2 with an inorganic acid.
- The inorganic carbon fraction is removed from the sample as CO₂ in a stripper tank, while the organic carbon remains in the sample.
- A dosing pump feeds the pre-treated water in a defined volume to the combustion chamber of the oxidation reactor.
- Air is drawn from the jacket of the oxidation reactor, freed of CO₂ and introduced into the reactor together with the sample water as carries gas.
- In the oxidation reactor, the sample water is evaporated and the water constituents are combusted.
- Carbon species are quantitatively oxidized to CO₂ and nitrogen species are quantitatively oxidized to NO.
- In the wash bottle, the water vapor share is kept constant.
- The cyclone Peltier cooler GO-PK 2 cools the gas mixture from the oxidation reactor and removes the water vapor formed. The condensate is collected and discharged via a siphon tank.
- Acid residues from the acidification step are retained in acid filters.
- The microprocessor-controlled gas analyzer determines the quantity of CO₂ / nitrogen formed (optional).
- The TOC share of the sample water is displayed in mg C/l. The nitrogen share is displayed in mg N/l (optional).
Facts
Equipment options
- Version for simultaneous analysis of TOC and TNb (bound nitrogen)
- Dilution unit
- GO-RIF in-line pipe filter
- Sampling point changeover
- 2nd reactor
- Steel cabinet
- GO-MC measurement container
- GO-OTP reactor support plate
- Analyzers from Siemens and ABB (freely selectable)
Benefits
- Continuous measured value recording
- Measurement according to DIN 38409 and EN 1484
- Online operation
- Automatic sample preparation
- Robust, proven technology
GO-TOC P performance data
- NDIR gas analyzer
Ultramat 6 F / 6 EU / 6 E – 2 PU
ABB Uras26 - Minimum measurement range TOC
0 – 5 mg C/l (other measurement ranges on request) - Minimum combined TOC/TN measurement range (option)
TOC 0 – 5 mg C/l, TN 0 – 100 mg N/l - Dosing pump
4-channel dosing pump - Display
LCD multifunction display - Limit value outputs
4 - Output signals
0/2/4 – 20 mA interface / PROFIBUS interface optional / 6 potential-free relay contacts - Operating temperature of the oxidation reactor
850 °C - Ambient temperature
5 – 30 °C - Power consumption
max. 1,600 VA - Mains connection
230 V, 50 Hz - Dimensions (H x W x D)
approx. 1,700 x 700 x 350 mm (mounting plate)
approx. 1,900 x 800 x 500 mm (steel cabinet) - Gas cooler
peltier cooler GO-PK 2 - Raw sample flow rate
approx. 250 ml/h - Measuring water flow rate
approx. 40 ml/h - Weight
approx. 100 kg (mounting plate)
approx. 190 kg (steel cabinet) - Materials conducting sample
ceramic, glass, platinum, Viton, PVC, palladium, PTFE, silicone - Stripping and carrier gas
Ambient air
Check out our new GO-TOC analyzer tutorial videos!
See how quick and easy it is to use our GO-TOC analyzer! In our blog post, “Tipps und Kniffe für unseren GO-TOC – schnell und einfach erklärt im Video!” (German only) we’ll show you, step by step, how to use our product to its full potential. Check out our instructional videos and learn everything you need to know about using our GO-TOC.
