Brand: JUMO

JUMO tecLine ClO2 and O3 Chlorine Dioxide and Ozone Sensors

Name: JUMO tecLine ClO2 and O3 Sensors 202634 | Seven Star LLC
Brand: JUMO
SKU: tecLine ClO2 and O3

Description

Chlorine dioxide and ozone sensors in analog or digital form

The JUMO tecLine ClO2 and O3 series (type 202634) groups eight membrane-covered amperometric sensors for chlorine dioxide and ozone in aqueous solutions. The chlorine dioxide sensors are intended for water from chlorite/chlorine and chlorite/hydrochloric acid generator plants; the ozone sensors can measure electrolytically generated ozone. Each sensor has integrated electronics that give a temperature-compensated 4 to 20 mA signal or a digital Modbus RTU signal. The standard versions use a hydrophobic PTFE membrane, whereas the chemical-resistant versions use an elastomer membrane that tolerates surfactants, bottle-washer and CIP chemicals and seawater. Like all JUMO membrane sensors in the family they cannot prove the absence of the measured disinfectant.

Technical specifications

Parameter	Specification
Type	202634 JUMO tecLine ClO2 + O3, two-electrode amperometric, membrane-covered
Versions	/45 ClO2 4-20 mA; /47 ClO2 4-20 mA chemical-resistant; /50 O3 4-20 mA; /52 O3 4-20 mA chemical-resistant; /60 O3 digital; /62 O3 digital chemical-resistant; /65 ClO2 digital; /67 ClO2 digital chemical-resistant
Ranges (order code)	10: 0 to 0.5; 20: 0 to 2; 25: 0 to 5; 35: 0 to 10; 37: 0 to 20 mg/l (ppm); /45 offers 0.5, 2, 5, 10 mg/l; /65 offers 2 and 20 mg/l
Resolution	0.001 mg/l on 0.5 or 2 mg/l ranges; 0.01 mg/l on higher ranges
Supply	Analog: DC 12 to 30 V, burden (UB – 11 V)/0.02 A, galvanic isolation required; digital: DC 9 to 30 V
Connection	Analog: 2-pole terminals 2 x 1 mm2; digital: 5-pole M12 flange connector, Modbus RTU
Response t90	About 15 s (standard ClO2 versions); about 60 s (chemical-resistant ClO2 version /47)
Settling and drift	About 1 h at first start; slope drift about -1 % per month (25 °C, pH 7.2)
Measuring water	0 to 45 °C standard (0 to 50 °C for /47); environment 0 to 55 °C; no ice crystals
pH range	pH 1 to pH 12; zero-point adjustment not required
Cross-sensitivity (ClO2 sensors)	Cl2 factor 0.35 and O3 factor 3 (standard); Cl2 factor 0.1 and O3 factor 25 (/47)
Pressure	Absolute max. 2 bar, relative max. 1 bar; pressure-free operation recommended
Dimensions and weight	Ø 25 mm; 220 mm (analog) or 205 mm (digital); about 125 g
Membrane materials	PTFE (standard) or elastomer (chemical-resistant); body PVC-U, stainless steel 1.4571
Stock version	202634/50-20 ozone, 4-20 mA, 0 to 2 mg/l, part no. 00392202 (3 working days)

Selecting the sensor version

The code is 202634/ extension – range, for example 202634/45-20 for chlorine dioxide, 4 to 20 mA, 0 to 2 mg/l. Extensions 45 and 65 are the general-purpose chlorine dioxide sensors with a PTFE membrane, intended for swimming-pool, drinking, service and process water that contains no surfactants. Extensions 47 and 67 use the chemical-resistant membrane for bottle washers, rinsers, CIP plants and seawater where surfactants are present. Ozone sensors follow the same logic: 50 and 52 are analog, 60 and 62 are digital. The two-wire types ship with a membrane cap, electrolyte, abrasive paper for cathode cleaning and the manual. Because the code is not modular, JUMO checks free combinations for feasibility. Spares are matched to the version: parts set 00392331 for /45, /50, /60 and /65; 00753804 for /47 and /67; 00762731 for /52 and /62; plus electrolyte 00392332 (ClO2) or 00392333 (O3), 100 ml.

Installation notes and compatible instruments

JUMO recommends the individual flow fitting 00392611, which delivers about 15 cm/s inflow at roughly 30 l/h, together with flow monitor 00605507 and a mounting bracket. A combination fitting (00607325) holds several sensors and has an integrated flow monitor. Digital versions use M12 cables of 1.5, 5 or 10 m, and several digital sensors on an AQUIS touch need a digiLine hub with an external supply. Analog versions connect to the AQUIS 500 AS or the published dTRANS AS 02. Typical locations are swimming pools, drinking-water disinfection, cooling-tower and process water treatment, and bottling plants in hot regions. Sensors should not see pressure fluctuations. See the liquid analysis sensors category for further disinfectant sensors.

Send the target gas (chlorine dioxide or ozone), the measuring range, the water temperature and pH, and any chlorine or ozone that may also be present, because the cross-sensitivity factors differ between standard and chemical-resistant versions. State the analog or digital connection, the cable length for digital versions, and the instrument that will evaluate the signal. The sensor is supplied with a PTFE or elastomer membrane, both of which need regular replacement. A single stock version, the 2 mg/l ozone sensor with 4 to 20 mA output, is available within three working days, while other versions follow the production lead time stated by the manufacturer.

Both measurands are unstable, so sampling should be fast and close to the injection point, with the flow rate held constant in the fitting. A stable inflow, a clean membrane and a correct zero reading after first start-up of about one hour are the main factors for reliable readings.

Documents and quotation

The hosted document is JUMO data sheet 202634 (17 pages, English). Choose the exact extension and range, and confirm membrane type for your chemicals before ordering. Seven Star LLC is an independent supplier in Muscat; send the order code and application details for a quotation.

Datasheets & Documents

Datasheet JUMO tecLine ClO2 and O3 data sheet 202634 (EN) Download

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About brand

JUMO is the German maker of temperature sensors, process controllers, pressure transmitters and liquid analysis instruments. Moritz Kurt Juchheim founded it in Fulda in 1948 as M. K. Juchheim KG, making glass thermometers with six employees. The name JUMO comes from the founder's name. It is still a family company headquartered in Fulda, and the parent company has been called JUMO GmbH & Co. KG since 2003.

Seven Star LLC is an independent supplier in Muscat. We list JUMO RTD and thermocouple probes, thermowells, transmitters, controllers, recorders and water analysis instruments, and supply them to process plants, OEMs, HVAC contractors and water utilities in Oman and the GCC by type number.

JUMO company profile

Established	1948, Fulda, Germany, by Moritz Kurt Juchheim
First products	Glass and contact thermometers; platinum glass sensors from 1966
Ownership	Family-owned; renamed JUMO GmbH & Co. KG in 2003
Product families	RTD and thermocouple probes, thermowells, temperature and pressure transmitters, controllers and thermostats, safety temperature limiters, paperless recorders, liquid analysis and flow and level instruments

Milestones

1948: Moritz Kurt Juchheim founds M. K. Juchheim KG in Fulda, making glass thermometers with six employees.
1966: Platinum glass temperature sensors are added.
2003: The parent company is renamed JUMO GmbH & Co. KG.

JUMO products we list

Family	Models	Typical use
RTD and thermocouple probes	902020, 902030, 902050, 902120, 902006 2xPt100, PROCESStemp, mineral-insulated RTD, 901020 thermocouple, 901210, 902810 hygienic, 902550 surface, 902520 HVAC, MarineTemp	Temperature measurement in pipes, vessels, machines, HVAC and food plants
Thermowells and inserts	909710 thermowells, 909740 measuring inserts	Protecting sensors and replacing them without opening the process
Temperature transmitters	dTRANS T01, T03, T04, T05, T06 SIL, T07 HART, T09, T1000 IO-Link, DELOS T switch	Converting sensor signals to 4-20 mA, HART or IO-Link
Pressure and level	dTRANS p20, p30, p31 hygienic, p33 Ex, p02 DELTA, MIDAS S05, MIDAS DP10, DELOS S02, MAERA S25, NESOS R20	Pressure in process, hydraulic and OEM systems; tank and well level
Controllers, limiters and recorders	DICON touch, IMAGO 500, dTRON 316, iTRON, cTRON, diraTRON 104, eTRON T, safetyM STB/STW, safetyM TB/TW, LOGOSCREEN 601, mTRON T	Furnace, oven and process control, over-temperature protection and recording
Liquid analysis and flow	AQUIS touch S, AQUIS touch P, AQUIS 500 pH, AQUIS 500 CR, dTRANS pH 02, pH electrode, digiLine DO, ecoLine NTU, flowTRANS MAG H20, flowTRANS US W01	pH, conductivity, oxygen and turbidity in water treatment; liquid flow

Choosing a temperature sensor starts with the range and accuracy. A Pt100 RTD is accurate and stable from about -200 to 600 °C and is the usual choice in process plants. A thermocouple (type K or J, for example) covers much higher temperatures and responds faster but is less accurate. The wiring also matters: a 3-wire or 4-wire Pt100 connection cancels the resistance of the cable, while a 2-wire connection adds an error that grows with cable length. That is why a head-mounted transmitter is often fitted close to the sensor.

Where JUMO products are used

In Oman and the GCC, JUMO sensors and controllers are used in oil and gas and chemical plants, food and beverage production, plastics and metal heat treatment, HVAC and district cooling, water and wastewater treatment, swimming pools and marine applications.

Ordering JUMO products: what we need

Send the JUMO type number and the full order code from the label (for example 902020/10-...). For probes, add the sensor type (Pt100, Pt1000, type K or J), the number of wires, the insertion length and diameter, and the process connection. For controllers, add the input, outputs and supply voltage.

Facts checked against JUMO's company history, October 2026.

Browse JUMO products by category: Temperature Instrumentation, Pressure Instrumentation, Liquid Analysis Sensors, Controllers & Data Acquisition, Level Transmitter.