Brand: JUMO

JUMO dTRANS CR 02 Conductivity Transmitter Controller

Name: JUMO dTRANS CR 02 Conductivity Transmitter – Manual & Quote
Brand: JUMO

Description

Overview

JUMO dTRANS CR 02 is a compact multichannel transmitter and controller engineered for the measurement and control of electrolytic conductivity, specific electrical resistance, and TDS (total dissolved solids) value, with the additional ability to record temperature and standard input signals. Housed in an ultra-compact enclosure suitable for surface or control cabinet mounting, the JUMO dTRANS CR 02 combines a transmitter, controller, indicator, and data logger into a single device, supporting both conductive two-electrode and four-electrode measuring cells as well as a pulse generator for flow measurement.

With engineering support in Muscat, Seven Star LLC supplies the JUMO dTRANS CR 02 to water treatment plants, utilities, and process industries across Oman and the GCC. Customers purchasing through Seven Star LLC receive a formal quotation, the manufacturer datasheet, and technical support based in the Sultanate of Oman.

Measurement Principle

The JUMO dTRANS CR 02 determines electrolytic conductivity by applying an AC excitation signal across a conductivity sensor and measuring the resulting current, which is proportional to the ion concentration of the liquid being monitored. Both conductive two-electrode cells and four-electrode cells – the latter compensating for polarization and fouling effects in higher-conductivity media – can be connected directly, allowing the transmitter to cover applications ranging from ultra-pure water monitoring to concentrated process solutions. An integrated temperature input compensates the conductivity reading against a reference temperature, ensuring accurate, repeatable measurement independent of process temperature fluctuations.

Beyond conductivity, the device converts the raw signal into resistance or TDS units through built-in linearization, and a math and logic module allows derived values – such as blowdown control set points in cooling tower and boiler applications – to be calculated directly within the instrument. Because the measurement is purely electrical rather than mechanical, there are no moving parts to wear, no flow restriction introduced into the process line, and no risk of the sensor itself contaminating the measured medium, which makes the JUMO dTRANS CR 02 well suited to continuous, unattended operation in demanding industrial environments.

Engineering Design of the JUMO dTRANS CR 02

The JUMO dTRANS CR 02 is available in a 96 × 48 mm panel-mount enclosure (front rated IP65) or a surface-mounted IP67 housing, giving installers flexibility to fit the device into an existing control cabinet fascia or mount it directly at the process point. The front panel carries a clear plain-text display with a choice of large digits, bar graph, or trend visualization, and the device supports 13 integrated user languages for straightforward multilingual operation across regional plant teams.

Electrically, the unit provides one main input, one additional analog input, and two binary inputs as standard, with further inputs available via optional plug-in boards; up to three analog outputs and up to seven relays can be configured depending on slot selection, supporting cascaded control, alarm relays, and a wash timer for automated cleaning cycles. An RS422/485 interface is available for integration into a plant SCADA or building management system, and a calibration logbook is stored internally to support documented, traceable calibration records for regulated environments.

Key Features

The JUMO dTRANS CR 02 is built around a compact, feature-dense architecture that consolidates several instrumentation functions into a single field device. Key characteristics include:

Ultra-compact housing that integrates a transmitter, controller, indicator, and data logger into one device, reducing panel space and wiring complexity.
Support for both conductive two-electrode and four-electrode measuring cells, plus a pulse input for flow-proportional measurement.
Choice of display visualization – large digits, bar graph, or trend display – for at-a-glance process monitoring.
Integrated one-, two-, and three-point calibration routines with an internal calibration logbook for audit traceability.
Up to three configurable analog outputs and up to seven relays across three optional expansion slots.
Built-in math and logic module for derived calculations such as blowdown or dosing control.
Dedicated wash timer function for automated cleaning of measuring cells in fouling-prone media.
USP <645> switching function supporting pharmaceutical water conductivity requirements.

Industrial Applications

The JUMO dTRANS CR 02 is deployed across pure, ultra-pure, and pharmaceutical water systems, including applications governed by USP, Ph. Eur., and WFI standards, where four-electrode measuring cells combined with automatic measurement-range switching deliver the accuracy demanded by regulated water quality programs. In cooling tower and boiler feedwater applications, the device’s conductivity-based blowdown control reduces scaling and chemical consumption, while in cleaning-in-place (CIP) systems its wash timer function automates sensor cleaning cycles to maintain measurement accuracy over long unattended runs.

Backed by manufacturer datasheet documentation, Seven Star LLC distributes the JUMO dTRANS CR 02 to desalination plants, district cooling operators, pharmaceutical manufacturers, and utilities throughout Oman and the wider GCC, including facilities operating within the Sohar and Salalah economic zones. Regional customers benefit from technical support with selection and access to JUMO’s engineering documentation through Seven Star LLC’s technical instrumentation division.

Technical Specifications

The table below summarizes the core technical specifications of the JUMO dTRANS CR 02 compact conductivity transmitter/controller.

Parameter	Specification
Model	JUMO dTRANS CR 02 (Type 202552)
Measurands	Conductivity, temperature, resistance, TDS value, standard signals
Enclosure options	Panel case 96 × 48 mm (front IP65) or surface-mounted case (IP67)
Mounting	Surface or control cabinet mounting
Inputs	1 main input, 1 analog input, 2 binary inputs, further inputs via option boards
Outputs	Up to 3 analog outputs, up to 7 relays
Special features	Math and logic module, wash timer for cleaning facilities, calibration logbook
Protection type	IP65 (panel), IP67 (surface-mounted)
Interface	RS422/485
Power supply	AC 110–230 V, +10/-15%, 48–63 Hz
Areas of application	Universal conductivity, TDS, and resistance measurement and control

Request a Quote for JUMO dTRANS CR 02 Conductivity Transmitter Controller

Seven Star LLC supplies the JUMO dTRANS CR 02 conductivity transmitter/controller on request with regional technical support. Contact our instrumentation division for a formal RFQ, to check current availability and lead time, or to download the complete technical datasheet for project specification.Seven Star LLC supplies this item on request with the manufacturer documentation, and availability and lead time are confirmed at quotation.

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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.

FAQ

Questions about the JUMO dTRANS CR 02 Conductivity Transmitter

Answers from our engineering team on installation, compatibility and integration.

01What does the JUMO dTRANS CR 02 measure?

The JUMO dTRANS CR 02 measures and controls electrolytic conductivity, specific electrical resistance, and TDS (total dissolved solids) value, and can also record temperature and standard input signals in a single compact device.

02How much space does installation require?

The unit is available in an ultra-compact 96 x 48 mm panel-mount enclosure or a surface-mounted IP67 case, combining a transmitter, controller, indicator, and data logger in one housing, which reduces panel cutout space and wiring compared to separate instruments.

03What types of conductivity sensors are compatible?

The JUMO dTRANS CR 02 accepts both conductive two-electrode and four-electrode measuring cells, as well as a pulse generator input for flow-proportional measurement, making it compatible with a wide range of JUMO and third-party conductivity sensors.

04Can it be used for pharmaceutical water quality monitoring?

Yes. The device includes a USP switching function and supports four-electrode measuring cells with automatic measurement-range switching, making it suitable for pure, ultra-pure, and pharmaceutical water systems governed by USP, Ph. Eur., and WFI standards.

05Is Seven Star LLC an experienced supply partner for JUMO products?

Yes, Seven Star LLC is an experienced supplier of JUMO in Oman and the GCC, supplying hardware with local technical support.