Brand: JUMO

JUMO digiLine Ci HT10 Head Transmitter with Inductive Conductivity Sensor, Type 202761

Name: JUMO digiLine Ci HT10 Conductivity Sensor | Seven Star LLC
Brand: JUMO
SKU: digiLine Ci HT10

Description

An inductive conductivity sensor with the electronics built into the head

The JUMO digiLine Ci HT10 (type 202761) joins an inductive conductivity sensor and its transmitter electronics in one head-mounted module that is installed completely at the measuring point in a suitable fitting. Four interface families are available: an RS485 interface for the JUMO digiLine protocol or Modbus RTU, IO-Link, two 4 to 20 mA analog outputs, or two PhotoMOS solid-state relay outputs. Versions with RS485 give plug-and-play operation on the JUMO AQUIS touch S/P or Modbus operation on a JUMO mTRON T or variTRON. Connection is by pre-assembled M12 cables, and calibration data is stored in the electronics, so the sensor can be calibrated in the laboratory before it is mounted.

Technical specifications

Parameter	Specification
Basic type	202761 JUMO digiLine Ci HT10, head transmitter with inductive conductivity sensor
Sensor types (code 6)	10 Ci-PEEK (sensor data sheet 202941); 20 Ci-S-PVDF (202942); 30 Ci-ecoLine-PP and 40 Ci-ecoLine-PVDF (202943)
Basic type extension (code 2)	10/15 digital JUMO digiLine, plastic/metal; 20/25 analog outputs; 40/45 IO-Link; 50/55 solid-state relays (first of each pair plastic, second stainless steel case)
Display (code 3)	00 without display; 10 with display and membrane keyboard
Version / language	8 standard with default settings or 9 customer-specific; language 01 German, 02 English, 03 French
RS485 interface	JUMO digiLine or Modbus RTU; address 1 to 247; 9600, 19200 or 38400 baud; minimum response time 0 to 500 ms
IO-Link	Device V1.1, COM 3 (230.4 kBaud), line up to 20 m; NPN, PNP or push-pull switching output, 100 mA, max. 2 V drop
Analog outputs	2 x 4 to 20 mA (conductivity and temperature), load up to 500 ohm, accuracy 0.25 %
Binary outputs	PhotoMOS solid-state relays, 200 mA, max. DC 30 V / AC 30 V; 2 binary inputs on analog and binary versions
Temperature input	Pt100 or Pt1000, -50 to +250 degC, two-wire, accuracy 0.25 % of range, sampling 500 ms
Conductivity units	uS/cm, mS/cm, kohm x cm, Mohm x cm
Compensation methods	TC linear, TC curve, TDS, natural water (EN 27888 and extended to 100 degC), NaOH, HNO3 and other concentration curves
Supply voltage	RS485: DC 5 V plus or minus 10 % or DC 24 V plus or minus 25 %; IO-Link and analog/binary: DC 24 V plus or minus 25 %
Power consumption	RS485 under 1.5 W; IO-Link under 7.5 W; analog or binary 4 W or less
Housing / protection	ABS plastic or stainless steel 1.4301; IP66, IP67, IP69K; protection class III
Ambient / storage temperature	-20 to +60 degC; -25 to +80 degC; up to 100 % condensing humidity (climate class 4K4H)
Vibration / shock	IEC 61298-3: plastic 10 to 1000 Hz, 0.35 mm, 50 m/s2; steel case 0.15 mm, 20 m/s2; shock DIN EN 60654-3, 40 m/s2
Approvals as printed	UL E201387 for named plastic-housing versions; DNV (approval submitted); GOST and EAC listed as submitted
Process connections (code 7)	G 1 1/4, G 1 1/2, G 2 screw; union nuts G 1 1/2 in PVC, CrNi or PP; DIN 11851 DN 40 to DN 80; clamp DN 50 and 2 1/2 in; VARIVENT DN 50/40; SMS DN 2
Extra codes	061 UL, 062 DNV, 268 internal temperature probe
Order example	202761/10-10-8-01-10-168/000

Built-in monitoring and calibration functions

The electronics add monitoring that a plain sensor lacks. A calibration logbook stores the last ten calibrations with date, time and values, a calibration timer reminds the operator when the interval has run out, and counters record CIP and SIP cleaning cycles so that sensor wear can be assessed. Two limit-value functions are available on IO-Link and relay versions, including limit alarms to USP 645 or the European Pharmacopoeia for purified water, and a sensor-stress alarm is calculated from the measurement data. Customer linearisation tables of up to 30 value pairs per range convert conductivity into a concentration on versions with a display. The relay version also carries an alarm buzzer.

Setup uses the AQUIS touch S/P, the local keys on display versions, or the JUMO DSM software over a Micro-B USB port. The datasheet warns that heat from the plant can exceed the permitted ambient temperature of a head transmitter, in which case a version with a separate sensor should be chosen.

Choosing the version and accessories

Pick the interface first: RS485 for digiLine or Modbus networks, IO-Link for modern automation systems, analog for a 4 to 20 mA input, or relays for limit switching. Then choose plastic or steel housing, display, sensor type and process connection. The datasheet ties its UL and DNV references to specific combinations, for example plastic housing with sensor type 30 and union nut 168 or 169, so check the approval table when a mark is required. Accessories include M12 digiLine master cables of 1.5, 5 and 10 m (00638333, 00638337, 00638341), the digiLine hub 00646871, its power supply 00661597, the terminating connector 00461591, the DSM software 00655787 and 8-pole M12 connectors (00444307, 00444312 shielded 00486503).

Related published items include the AQUIS 500 CR and the AQUIS touch P multichannel analysis controller, and the liquid analysis sensors category lists further sensors. State the conductive medium, concentration and temperature range, CIP or SIP exposure, fitting type and interface when you enquire.

Documents and quotation

Hosted for reference is the official JUMO data sheet 202761, version 6.00 dated 2024-02-20, 28 pages in English. It carries the interface data, wiring diagrams, dimensions and the complete order code. Seven Star LLC is an independent supplier in Muscat; send the full type code and we will prepare a quotation.

Datasheets & Documents

Datasheet JUMO digiLine Ci head transmitter data sheet 202761 V6.00 (EN, 28 pages) 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.