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Brand: JUMO
JUMO digiLine Ci ST10 Inductive Conductivity Electronics, 202760
Description
Digital electronics that turn an inductive cell into a bus or IO-Link sensor
The JUMO digiLine Ci (type 202760) is the intelligent electronics that connect an inductive conductivity sensor, with a separate cell on a sensor line, to a measuring or automation system. The same electronics are offered with four interface types: RS485 for the JUMO digiLine protocol and Modbus RTU, IO-Link, two 4 to 20 mA analog outputs, or two PhotoMOS binary outputs. Versions with RS485 give Plug and Play operation on a JUMO AQUIS touch S or P and Modbus operation on a mTRON T or variTRON. The housing can be mounted on a wall, pipe, mast or DIN rail near the cell, and two M12 plug connectors make the electrical connection with pre-assembled cables. Calibration data are stored in the electronics, so a calibrated cell can be installed without recalibration.
Technical specifications
| Parameter | Specification |
|---|---|
| Type | 202760 digiLine Ci with separate inductive conductivity sensor |
| Interfaces | RS485 (JUMO digiLine, Modbus RTU), IO-Link V1.1, 2 x 4 to 20 mA, or 2 x PhotoMOS binary outputs |
| RS485 | Addresses 1 to 247; 9600, 19200 or 38400 baud; response time 0 to 500 ms |
| IO-Link | COM 3, 230.4 kBaud; line up to 20 m; two NPN, PNP or push-pull outputs, 100 mA each |
| Analog outputs | 4 to 20 mA, load up to 500 Ω, accuracy 0.25 % |
| Binary outputs | PhotoMOS solid-state relay, 200 mA, up to 30 V DC or AC |
| Binary inputs | 2 inputs on analog and binary versions for hold or range selection |
| Conductivity input | Units µS/cm, mS/cm, kΩ x cm, MΩ x cm; cell constant 4 to 8 per cm; up to 4 measuring ranges |
| Conductivity accuracy | ±1.5 % of range end up to 1 mS and from 1000 mS; ±1 % in between |
| Temperature input | Pt100 or Pt1000 two-wire, -50 to +250 °C, ±0.25 % of span |
| Compensation | Linear TC, TC curve, TDS, natural water to DIN EN 27888, and concentration curves for NaOH, HNO3, H2SO4, HCl, NaCl and MgCl2 |
| Supply | RS485 DC 5 V ±10 % or DC 24 V ±25 %, under 1.5 W; IO-Link DC 24 V ±25 %, under 7.5 W; analog or binary DC 24 V ±25 %, up to 4 W |
| Housing | ABS plastic or 1.4301 stainless steel case |
| Protection | IP66, IP67 and IP69K |
| Ambient temperature | -20 to +60 °C; storage -25 to +80 °C; altitude up to 2000 m |
| Setup | USB Micro-B with JUMO DSM software; JUMO AQUIS touch S or P; optional display and keypad |
| Standards | EMC DIN EN 61326-1 class B; protection class III |
Functions that reduce commissioning and downtime
The electronics store a calibration logbook of the last 10 calibrations with date, time and values, and a calibration timer that reminds the operator when the next calibration is due. Two limit value monitors with four switching functions each can also apply USP 645 or European Pharmacopoeia alarm limits for purified water. Counters record CIP and SIP cycles, and a sensor stress value warns when thermal load becomes critical. A linearisation table of up to 30 value pairs per range converts conductivity into a concentration on the local display. Binary versions add an alarm buzzer that can be linked to three internal signals.
Selection and installation notes
Choose the interface first: digiLine RS485 when a JUMO AQUIS touch S or P is the master, Modbus when a mTRON T or variTRON is the controller, IO-Link for a PLC with an IO-Link master, and analog or binary outputs for a conventional loop. The voltage supply must be SELV or PELV and current-limited to 2 A. Fasten the housing with the holder, connect the cell by the 8-pole M12 sensor cable and the interface by the second M12 cable, and use the USB port with JUMO DSM software for laboratory calibration. The IP69K rating suits washdown areas such as dairies, bottling halls and CIP skids.
Accessories listed in the datasheet include M12 digiLine master connecting cables of 1.5, 5 and 10 m (part numbers 00638333, 00638337 and 00638341), M12 connecting cables up to 15 m, a Y-splitter 00638327, the digiLine hub 00646871 with power supply 00661597, an M12 terminating connector, the JUMO DSM software 00655787 and a pipe-mounted kit 00515128 for stainless steel cases. The datasheet notes that pipe mounting with cable ties is not permitted within the UL scope, where wall mounting on a plate must be used.
See the liquid analytical systems category for related analysis controllers and transmitters.
Using the digiLine Ci in Oman and the GCC
Inductive conductivity measurement is used in the region where conductivity is high or the liquid is dirty, such as cooling tower blowdown, wastewater, brine and concentrate lines in desalination plants, and chemical concentration in CIP systems. Because the inductive cell has no electrodes in contact with the liquid, it resists fouling and corrosion better than conductive cells in these duties. The digital electronics allow the sensor to be connected directly to a PLC, an IO-Link master or a JUMO controller, which simplifies wiring on skids.
Choose the interface that matches the control system and check the ambient temperature at the electronics, especially for outdoor skids or hot plant rooms. Keep the cell away from pipe walls as recommended in the manual to avoid wall effects, and check calibration at regular intervals.
For retrofits, tell us which sensor or transmitter is being replaced so the mounting and the signal can be matched.
Information to send with an enquiry
- Interface type: RS485, IO-Link, analog or binary outputs
- Inductive sensor type, cable length and mounting
- Liquid, conductivity range and temperature
- Control system or JUMO controller in use
Related JUMO products: JUMO AQUIS 500 Ci Inductive Conductivity Transmitter, JUMO CTI-750 Inductive Conductivity Transmitter, JUMO ecoTRANS Lf 03 DIN-Rail Conductivity Transmitter, JUMO AQUIS 500 CR Conductivity Transmitter and Controller, JUMO AQUIS 500 AS Standard-Signal Indicator and Controller and JUMO dTRANS AS 02 Standard-Signal Transmitter and Controller.
Documents and quotation
The hosted document is JUMO data sheet 202760 (29 pages, English). It includes dimensions, order details and wiring. Confirm interface, housing, display and sensor line before ordering. Seven Star LLC is an independent supplier in Muscat; send the cell type, medium and control system for a quotation. To help us prepare an accurate quotation, please include the measuring task, operating temperature and pressure, required output signal, supply voltage and cable length, together with the quantity needed and the delivery location. We will then compare these details with the order information in the datasheet.
Datasheets & Documents
- Datasheet JUMO 202760 data sheet 202760 (EN) 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 digiLine Ci ST10 Inductive Conductivity
Answers from our engineering team on installation, compatibility and integration.
01Which interfaces does the digiLine Ci offer?
RS485 for digiLine and Modbus RTU, IO-Link, two 4 to 20 mA outputs, or two PhotoMOS binary outputs.
02Which cells does it connect to?
Inductive conductivity sensors on a separate sensor line, with a cell constant of 4 to 8 per cm.
03How is it calibrated?
On a JUMO AQUIS touch S or P, on the optional display, or on a PC through USB with JUMO DSM software.
04What protection rating does it have?
IP66, IP67 and IP69K, in ABS plastic or stainless steel 1.4301 housings.
05What temperature compensation does it support?
Linear and curve compensation, natural water, TDS and concentration curves for several acids, alkalis and salts.
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