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Brand: JUMO
JUMO ecoLine Ci Inductive Conductivity and Temperature Sensor, Type 202943
Description
A near maintenance-free conductivity sensor for water engineering
The JUMO ecoLine Ci (type 202943) detects electrolytic conductivity by the inductive principle, so it avoids electrode decomposition and polarisation and stays practically maintenance-free. A film of grease or oil on the sensor hardly affects its accuracy, according to the datasheet. A Pt1000 temperature sensor measures the process temperature at the same time, either exposed in a stainless steel pocket for ultra-fast response or inside the plastic body when the medium could attack the steel. The standard body is polypropylene with PVDF as an alternative, and the sensor is aimed at drinking water and wastewater, air-conditioning and cooling plants, cooling-tower dilution monitoring, carwashes, seawater desalination inlets and swimming pools.
Technical specifications
| Parameter | Specification |
|---|---|
| Measuring principle | Inductive, two coils in a hermetically sealed PP or PVDF body with flow-through opening |
| Measuring range | 0 to 1000 uS/cm up to 0 to 2000 mS/cm, depending on the connected transmitter; usual use from about 100 uS/cm |
| Accuracy | 1 % up to 1 mS/cm; 0.5 % in the 10, 50 and 100 mS/cm ranges; 1 % at 1000 and 2000 mS/cm |
| Cell constant | k = 6.25 per cm (PP versions 10 and 20); k = 4.65 per cm (PVDF version 30) |
| Temperature sensor | Pt1000 class A; t90 for the three basic type extensions 6 s, 2 min and 10 min (EN 60751) |
| Medium temperature | Operation -10 to +80 degC (PP) or -10 to +100 degC (PVDF); momentary to +100 or +110 degC (under 15 min); immersion/168 connections to +60 degC pressureless |
| Process pressure | 10 bar at +20 degC; 6 bar at +60 degC; 0 bar (PP) or 4 bar (PVDF) at +80 degC; min. -0.1 bar |
| Ambient / storage temperature | -10 to +60 degC; -20 to +75 degC |
| Protection | IP68 (EN 60529); M12 8-pin socket on fixed PUR cable |
| Cable lengths | 10 m standard, 20 m or 30 m |
| Materials | PP, EPDM, stainless steel 1.4301 or 1.4571 (version dependent); PVDF version with 1.4408 parts; food-use, FDA-listed wetted materials |
| Basic type extension | 10 PP body, exposed temperature sensor (standard); 20 PP body, internal sensor; 30 PVDF body, internal sensor |
| Process connection codes | 168 PVC union nut G 1 1/2; 169 steel union nut G 1 1/2; 607 DIN 11851 DN 50; 616 clamp DN 50 (2 in); 617 clamp 2.5 in; 690 SMS 2 in; 706 immersion |
| Immersion length (706) | 500, 1000, 1500 or 2000 mm (maximum) |
| Order example | 202943/10-168-0000-21-10/000 |
| Production versions | 202943/10-607-0000-21-10/000 part no. 00550665; 202943/10-706-1000-21-10/000 part no. 00556316 (10 working days) |
Choosing the temperature sensor, body and fitting
The basic type extension decides how the temperature is sensed. Extension 10 is the standard with an exposed temperature sensor in a 1.4571 stainless steel pocket that reacts quickly; extension 20 puts the sensor inside the PP body so that no metal touches the sample, which matters for aggressive media but slows temperature response; extension 30 is the PVDF body, again with an internal sensor and only available with process connections 168 and 169. Connections 607, 616, 617, 690 and 706 are limited to extension 10 or 20, and the immersion variant 706 is intended for open channels and containers.
Mating parts are listed with part numbers: PVC T-pieces DN 32 and DN 40 (00439247, 00439249), PP T-pieces DN 32, 40 and 50 (00449511, 00449514, 00449516), union nuts G 1 1/2 in PVC (00439199) or steel (00452039), a DIN 11851 weld-on adapter (00085020), DN 50 grooved union nut (00343368), an SMS 2 in nut (00345162) and PP flanges DN 32 and DN 50 for immersion (00083375, 00083376). A guide slot in the sensor takes a lug on the T-piece, which aligns the cell with the flow direction.
Commissioning and related equipment
Because the cell works inductively, two coils sit inside a hermetically sealed body and the sample liquid passes through an opening in the cell, which forms a liquid loop between them. A transmitter coil is fed with sinusoidal voltage, current is induced in the receiver coil in proportion to the medium conductivity, and the sensor is electrically isolated from the sample by principle. The datasheet describes the cell as extremely stable against temperature and pressure and notes that the wetted materials are approved for food use and physiologically safe. A large range of process connections is offered, including variants that provide spare equipment for older devices, so a replacement can often be matched to an existing pipe or tank fitting without rebuilding the installation.
The sensor connects to the JUMO AQUIS 500 Ci (data sheet 202566), the AQUIS touch S/P (202580 and 202581) or the digiLine Ci ST10 (202760). For first commissioning or when parts are replaced the datasheet requires a transmitter or controller, the sensor and a calibration adapter for inductive conductivity measurement, type 202711/21 (part no. 00543395). The datasheet also reminds users that temperature, pressure and sample medium affect the life of the cell.
Published related items are the AQUIS 500 CR, the AQUIS touch P and the dTRANS CR 02; see liquid analysis sensors for further sensors. When enquiring, state the medium, conductivity span, maximum temperature and pressure, pipe size or tank depth, body material and the transmitter to be used.
Related JUMO products: JUMO tecLine Ci-S Inductive Conductivity Sensor, JUMO tecLine CR Conductive 2-Electrode Conductivity Sensor, JUMO tecLine Br Amperometric Bromine Sensor, Type 202637, JUMO ecoLine O-DO Optical Dissolved Oxygen Sensor, Type 202613, JUMO ecoLine NTU Optical Turbidity Sensor and JUMO tecLine Cl2 Free Chlorine Sensor.
Documents and quotation
Hosted for reference is the official JUMO data sheet 202943, version 4.00 dated 2026-09-30, nine pages in English, with technical data, dimensions, accessories and the full order code. Seven Star LLC is an independent supplier in Muscat; send the order code and we will prepare a quotation.
Datasheets & Documents
- Datasheet JUMO ecoLine Ci data sheet 202943 V4.00 (EN, 9 pages) Download
Reviews (0)
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.
FAQ
Questions about the JUMO ecoLine Ci Inductive Conductivity and
Answers from our engineering team on installation, compatibility and integration.
01Why is it called maintenance-free?
The inductive principle avoids electrode decomposition and polarisation, and films of grease or oil hardly affect the accuracy.
02Which body materials are available?
Polypropylene (PP) as standard and PVDF as an alternative, both food-use and FDA-listed in contact with the medium.
03What protection rating does it have?
IP68 according to EN 60529, with an M12 8-pin socket on a fixed PUR cable.
04Which transmitters can it connect to?
JUMO AQUIS 500 Ci, AQUIS touch S/P and the digiLine Ci ST10.
05What is needed for first commissioning?
A transmitter or controller, the sensor and the calibration adapter type 202711/21, part no. 00543395.
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