Brand: JUMO

JUMO meroTRON Modular Controller

Name: JUMO meroTRON Modular Controller – Datasheet & Price Quote
Brand: JUMO

Description

Overview

JUMO meroTRON is a modular one-channel/two-channel controller with PLC function, engineered as a multifunctional replacement platform that takes the concept of the established JUMO dTRON series into the future. Featuring a fully customizable device menu, individual design of operating levels, and scalable hardware with Plug and Play functionality, the JUMO meroTRON adapts precisely to a wide variety of temperature, pressure, and process control applications without requiring extra external hardware.

With fast quotation turnaround and technical support, Seven Star LLC proudly supplies the JUMO meroTRON controller to industrial process, plastics, and manufacturing customers across Oman and the wider GCC. Every unit supplied through Seven Star LLC comes with manufacturer documentation and access to local technical support – supporting facility engineers and procurement teams in Muscat, Sohar, and Salalah who specify the JUMO meroTRON.

Working Principle

The JUMO meroTRON supports two-state, three-state, modulating, position, continuous, and program controller types from a single scalable hardware platform, applying the base control algorithm to one or two independent control channels depending on the model and option cards fitted. Autotuning, ramp function, program control, manual mode, limit value monitoring, digital control signals, extensive timer functions, and a service counter are included as standard, while a math and logic function together with structured text (ST) code functionality allow the device to be extended into genuinely complex control tasks and process sequences.

What distinguishes the JUMO meroTRON from a conventional compact controller is that its second control channel, PLC function, and data logger capability are built directly into the base hardware – there is no need for additional external hardware to implement multi-channel or logic-driven control strategies. ST code gives direct programmatic access to the display and operating keys, and extra code 278 unlocks specialized functionality such as a boost function for clearing plastic injection nozzles or a startup ramp tailored to hot runner technology, reflecting the controller’s strong presence in plastics processing applications.

Engineering Design of the JUMO meroTRON

The JUMO meroTRON is available in four DIN formats – 116 (48 x 48 mm), 108H (48 x 96 mm), 108Q (96 x 48 mm), and 104 (96 x 96 mm) – each with one analog and one digital input as standard, expandable with additional analog, digital, and fast counting inputs (up to 10 kHz). Two normally-open relay outputs are standard, with optional expansion to additional analog outputs, relays, solid-state relays, and logic outputs (0/14 V or 0/24 V), the latter of which can also directly power connected two-wire transmitters, simplifying loop wiring in the field.

Process information, menus, and parameters are shown across two 18-segment LCD displays, with types 703052 through 703054 adding a pixel matrix display for full text output. Communication options include USB host and device ports for setup, with optional RS485 (Modbus RTU master/slave), Ethernet (Modbus TCP master/slave), and PROFINET device connectivity. Removable PUSH IN terminal strips speed up field wiring during installation, and the controller runs from AC 110 to 240 V or AC/DC 24 V, carrying UL listing along with AMS 2750 and CQI-9 approvals for heat treatment traceability applications.

Key Features

The JUMO meroTRON combines a flexible, scalable hardware platform with built-in PLC-grade control that makes it a versatile replacement for a wide range of compact controller applications.

A second control channel, PLC function, and data logger are built into the base hardware without requiring additional external modules.
Math and logic functions plus structured text (ST) code enable sophisticated, program-driven control strategies.
Four DIN formats (116, 108H, 108Q, 104) provide direct fit for common panel cutouts across various applications.
Fast hardware counters up to 10/12.5 kHz support high-speed counting and positioning applications.
Modbus master function (RTU or TCP) and PROFINET device connectivity integrate cleanly into existing plant networks.
Logic outputs can directly power connected two-wire transmitters, simplifying field wiring.
AMS 2750 and CQI-9 approvals with optional CQI-9/AMS2750-compliant input calibration support heat treatment traceability.
Removable PUSH IN terminal strips speed up installation and reduce commissioning time.

Industrial Applications

The JUMO meroTRON is deployed across general industrial temperature and pressure control, plastics processing (including injection molding and hot runner systems), heat treatment, and machine building wherever a flexible, scalable process controller with built-in PLC and data logging capability is required. Typical duties include multi-zone temperature control, sequence and program control, and process control loops that benefit from direct two-wire transmitter power supply.

With engineering support in Muscat, Seven Star LLC supplies the JUMO meroTRON to plastics processors, heat treatment facilities, and industrial manufacturers throughout Oman and the GCC. The controller is a strong fit for process control retrofits and new machine builds across the Sohar and Salalah industrial zones, as well as for plastics, heat treatment, and general manufacturing facilities across Muscat that require dependable, scalable process control.

Technical Specifications

The table below summarizes the core specifications of the JUMO meroTRON controller as supplied by Seven Star LLC.

Parameter	Specification
Model	JUMO meroTRON (703051-703054)
Control Types	Two-state, three-state, modulating, position, continuous, program controller
DIN Formats	116 (48x48mm), 108H (48x96mm), 108Q (96x48mm), 104 (96x96mm)
Standard Inputs	1 analog, 1 digital (expandable, incl. up to 10 kHz counting inputs)
Standard Outputs	2 relays (N.O.), expandable with analog/relay/logic outputs
Display	2x 18-segment LCD (pixel matrix on 703052-054)
Interfaces	USB host/device; optional RS485, Ethernet, PROFINET device
Connections	Removable PUSH IN terminal strips
Voltage Supply	AC 110-240 V or AC/DC 24 V
Approvals	UL (listed), AMS 2750, CQI-9
Typical Applications	Plastics processing, heat treatment, general process, machine building

Request a Quote for JUMO meroTRON Modular Controller

Seven Star LLC supports the full procurement cycle for the JUMO meroTRON controller, from formal RFQ submission to confirmation of availability and lead time, technical datasheet delivery, and direct consultation with our instrumentation division on control channel configuration, option card selection, and interface requirements for your application. We ensure every JUMO meroTRON controller is supplied with manufacturer documentation and dependable local technical support. Contact Seven Star LLC today to request a quotation or discuss your process control requirements.

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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 meroTRON Modular Controller

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

01Does the JUMO meroTRON require external hardware for PLC functionality?

No. The second control channel, PLC function, and data logger capability are built directly into the base hardware of the meroTRON, so no additional external hardware is required to implement multi-channel or logic-driven control strategies.

02What DIN formats is the JUMO meroTRON available in?

The meroTRON is available in four formats: 116 (48 x 48 mm), 108H (48 x 96 mm), 108Q (96 x 48 mm), and 104 (96 x 96 mm), covering the most common panel cutout sizes used in industrial control panels.

03What is ST code and what does it enable on the meroTRON?

ST (structured text) code is a programming functionality that gives direct programmatic access to the display and operating keys, enabling sophisticated, custom control logic beyond the standard built-in controller types.

04Is the JUMO meroTRON suitable for plastics processing applications?

Yes. The meroTRON includes special functionality for the plastics industry, including extra code 278 for features like a boost function to clear injection nozzles and a startup ramp tailored to hot runner technology.

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. We supply JUMO instrumentation on request with local technical support.