Brand: JUMO

JUMO CTI-750 Inductive Conductivity Transmitter

Name: JUMO CTI-750 Conductivity Transmitter | Seven Star LLC
Brand: JUMO
SKU: CTI-750

Description

A hygienic inductive conductivity transmitter with built-in limit contacts

The JUMO CTI-750 (type 202756) measures conductivity or concentration with an inductive sensor and adds a fast temperature probe for compensation. It is built for media that leave dirt, oil, grease or gypsum and lime deposits, and for CIP processes, because the transmitter can change measuring range and temperature coefficient together through binary inputs. Two built-in switching outputs can be programmed as limit, alarm or control (dilution) contacts for conductivity, concentration or temperature. The unit comes as a head transmitter, with the electronics directly on the process sensor, or as a transmitter with a separate sensor on 10 m of cable for places with strong vibration or heat. Plastic (PA) or stainless-steel 1.4305 housings, with or without display and keypad, are available.

Technical specifications

Parameter	Specification
Basic type	202756 JUMO CTI-750; head transmitter /10, /15, /16; separate-sensor transmitter /20, /25, /26; with sensor and 10 m cable /60, /65, /66; replacement sensor /80, /85
Conductivity ranges	0 to 500, 1000, 2000, 5000 µS/cm; 0 to 10, 20, 50, 100, 200, 500, 1000 and 2000 mS/cm (2000 mS/cm not temperature compensated); four ranges switchable externally
Accuracy	Transmitter 0.5 % of span; sensor 0.5 % for 2000 µS/cm to 500 mS/cm, 1 % for 500 and 1000 µS/cm and above 500 mS/cm; usual use from about 100 µS/cm
Concentration	NaOH 0 to 15 % and 25 to 50 % by weight (0 to 90 °C); HNO3 0 to 25 % and 36 to 82 % by weight (0 to 80 °C); freely programmable customer curve
Temperature	Measuring range -20 to 150 °C/°F, accuracy 0.5 % of span; compensation reference 15 to 30 °C, coefficient 5.5 %/°C adjustable, linear, natural water or learned curve
Outputs	0/4 to 20 mA (burden 500 Ω max.) or 0/2 to 10 V (2 kΩ min.), freely scalable for conductivity/concentration and for temperature; alarm levels 3.4 or 22 mA
Switching outputs	Two floating PhotoMOS contacts, up to 45 V DC / 30 V AC, 200 mA
Binary inputs	Two potential-free inputs, including HOLD and range switching
Supply	19 to 31 V DC (24 V nominal), or 24 V AC ±10 % with extra code 844; 3 W with display, 2.6 W without
Sensor material	PEEK (extra code 767) or PVDF (768); medium -10 to +120 °C, briefly +140 °C for sterilisation; max. 10 bar
Process connections	G 1 1/2 A (108), G 2 A (110), DIN 11851 DN 50/65/80 (607/608/609), Clamp 2 1/2 inch (617), VARIVENT DN 50/40 (686, with PEEK), SMS DN 2 inch (690), immersion (706, with PVDF)
Housing and protection	PA (stainless steel 1.4305 for /16, /26, /66); IP67; approx. 0.3 to 2.4 kg; ambient 5 to +50 °C
Display	Backlit graphic LCD 62 x 23 mm, adjustable contrast; operator languages include English, German, French, Spanish
Calibration timer	0 to 999 days (0 = off)
Stock items	e.g. 202756/15-607-0000-82/767/941 part 00544540; 202756/65-607-0000-82/767/941 part 00547023

Configuring the order code

Order codes follow 202756/basic type – process connection – insertion length – electrical connection / extra codes, for example 202756/10-607-0000-82/767. Electrical connection 82 means cable glands with pluggable terminals, 83 means M12 plug/socket connectors and 84 means two M16 glands. Extra code 268 adds an internal temperature sensor, 767 selects PEEK, 768 selects PVDF, 844 a 24 V AC supply and 941 a hygienic design (not with PVDF). The hygienic VARIVENT connection can only be combined with PEEK. For separate-sensor versions the insertion length is 0500 to 2000 mm in 250 mm steps, and immersion models (706) require the PVDF cell. The manufacturer notes that versions without a keypad need the PC setup program, and that a calibration kit is essential for commissioning separate transmitters. Stock items ship in three working days; mounting brackets and flanges are accessories.

Where it is used

JUMO lists food and beverage and pharmaceutical production, product separation in beverage plants, breweries, dairies, bottle-cleaning plants, concentration control in electroplating and chemical plants, CIP systems, water and wastewater, chemical dosing, leakage indication and heating and cooling circuits. The same traits suit desalination chemical cleaning, soda and acid dosing and heat-exchanger leak detection in hot, dusty climates, since an inductive sensor has no electrodes to polarise or foul. The binary inputs allow a PLC to activate a range and temperature coefficient pair for each cleaning step. A comparable panel instrument is the AQUIS 500 CR for conductive cells, while sensors for the AQUIS 500 Ci family appear in the liquid analytical systems category.

The quotation depends on whether the transmitter is mounted on the head of the sensor or separately, which process connection and sensor material (PEEK or PVDF) the medium needs, and what conductivity or concentration range is required. Tell us the medium temperature, including any sterilisation peak up to 140 °C, the supply voltage available and whether switching outputs, binary inputs or concentration curves for sodium hydroxide, nitric acid or other chemicals are used. The graphic display speaks several languages, and the calibration timer can remind staff of the next adjustment. Two stock items with a DIN 11851 connection are listed in the datasheet for quick delivery.

Documents and quotation

The hosted document is JUMO data sheet 202756 (25 pages, English). Confirm the basic type, process connection, sensor material and supply voltage before ordering. Seven Star LLC is an independent supplier in Muscat; send the order code and process data and we will quote.

Datasheets & Documents

Datasheet JUMO CTI-750 data sheet 202756 (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.