Brand: JUMO

JUMO Type 4304 Pressure and Differential Pressure Transmitter

Name: JUMO Type 4304 Differential Pressure Transmitter – Datasheet
Brand: JUMO

Description

Overview

JUMO Type 4304 is a pressure and differential pressure transmitter engineered for non-aggressive gases, acquiring negative pressure, overpressure, or differential pressure with a wear-free inductive measuring system. Featuring an exceptionally wide range of very small measuring spans, precise temperature compensation, and an optional integrated LCD display, the JUMO Type 4304 is mainly used in heating engineering, air conditioning, and ventilation (HVAC) technology, as well as clean room monitoring and filter surveillance.

Working closely with plant engineers in the region, Seven Star LLC proudly supplies the JUMO Type 4304 pressure and differential pressure transmitter to HVAC, building automation, and industrial 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 Type 4304.

Working Principle

The JUMO Type 4304 measures pressure and differential pressure using a wear-free inductive measuring system: a flexible diaphragm separates two pressure chambers, and its deflection under differential pressure is detected inductively without physical contact or moving mechanical linkages subject to wear. This inductive principle allows the transmitter to resolve extremely small pressure differentials with high stability, since there are no sliding contacts or mechanical wear points to introduce drift or hysteresis over the service life of the instrument.

Precise temperature compensation built into the transmitter’s electronics maintains measurement accuracy across the rated ambient and medium temperature range, an important characteristic for HVAC and clean room applications where ambient conditions can vary throughout the day. For flow monitoring or level measurement via bubbling-through methods, the transmitter’s output characteristic can be configured as either linear or root-extracted, matching the transmitter’s response to the underlying physical relationship being measured.

Engineering Design of the JUMO Type 4304

The JUMO Type 4304 covers an exceptionally wide measuring range from 0.50 mbar up to 1200 mbar differential pressure (relative), supporting both extremely low-differential HVAC filter and clean room monitoring duties and higher-range general pressure measurement from a single product family. Accuracy (linearity) is rated at 1%, and the transmitter operates across a medium temperature range of -10°C to +50°C, matching typical HVAC and building automation ambient conditions.

Process connections include thread and hose connection options, and output signal choices span 4 to 20 mA two-wire, 0 to 20 mA three-wire, and DC 0 to 10 V three-wire, giving building automation and process integrators flexibility to match the transmitter to existing BMS or PLC input types. Special features include optional switching contacts for direct alarm or interlock functions, adjustable measuring range settings, and an optional integrated LCD display for local readout without requiring a separate indicator.

Beyond the differential-pressure span used in typical HVAC duty, the JUMO Type 4304 family is offered across a broad set of fixed nominal ranges – from as fine as 0 to 10 Pa or 0 to 40 Pa for ultra-low clean room pressure cascade monitoring, through 0 to 0.5 mbar up to 0 to 160 mbar, to 0 to 0.25 bar and 0 to 1.0 bar for general pressure duty – with absolute-pressure variants also available. This lets Seven Star LLC match the transmitter precisely to the application rather than supplying an oversized instrument that sacrifices usable resolution. Process connection is made via an 8 mm screwed pipe fitting or a 6.6 x 11 mm hose stub sized for 6 mm ID flexible tubing, and supply voltage options extend beyond the standard two-wire 4 to 20 mA loop to include 230 V AC, 115 V AC, and 24 V AC mains variants as well as DC 11.5 to 30 V and DC 19 to 31 V options, giving installers a transmitter that can be wired directly into existing building services power distribution without an intermediate power supply.

Key Features

The JUMO Type 4304 combines a wear-free measuring principle with an exceptionally wide range of very small measuring spans that makes it a standard choice for HVAC and clean room differential pressure monitoring.

A wear-free inductive measuring system eliminates mechanical wear points, supporting long-term measurement stability.
Measuring ranges from 0.50 mbar up to 1200 mbar DP cover both extremely low-differential and higher-range applications.
Precise temperature compensation maintains measurement accuracy across varying ambient conditions.
Linear or root-extracted output characteristics support both direct pressure readings and flow/level applications.
Optional switching contacts enable direct alarm or interlock functionality without an external controller.
An optional integrated LCD display provides local pressure readout without a separate indicator instrument.
Multiple output signal options (4-20 mA, 0-20 mA, 0-10 V) integrate with a wide range of BMS and PLC systems.
Thread and hose connection options provide installation flexibility across different ductwork and piping configurations.

Industrial Applications

The JUMO Type 4304 is deployed across HVAC systems, clean room monitoring, filter surveillance, and level measurement via bubbling-through methods wherever precise, low-differential pressure measurement of non-aggressive gases is required. Typical duties include air filter differential pressure monitoring, clean room pressure cascade verification, and ductwork pressure monitoring in commercial and industrial buildings.

With fast quotation turnaround and technical support, Seven Star LLC distributes the JUMO Type 4304 to HVAC contractors, building automation integrators, and industrial facilities throughout Oman and the GCC. The transmitter is a strong fit for commercial building HVAC systems across Muscat, as well as for clean room and filtration monitoring applications across the Sohar and Salalah industrial zones that require dependable, low-differential pressure measurement.

Technical Specifications

The table below summarizes the core specifications of the JUMO Type 4304 pressure and differential pressure transmitter as supplied by Seven Star LLC.

Parameter	Specification
Model	JUMO Type 4304 (404304)
Measuring Principle	Wear-free inductive measuring system
Measuring Range	0.50 to 1200 mbar DP, relative
Accuracy (Linearity)	1%
Output Signal	4-20 mA (2-wire); 0-20 mA (3-wire); DC 0-10 V (3-wire)
Process Connection	Thread; hose connection
Additional Nominal Ranges	0–10 Pa up to 0–1.0 bar (fixed spans); absolute variants available
Supply Voltage Options	230 V AC, 115 V AC, 24 V AC; DC 11.5–30 V or DC 19–31 V
Process Connection Detail	8 mm screwed pipe; 6.6 x 11 mm hose stub for 6 mm ID tubing
Medium Temperature	-10°C to +50°C
Special Features	Switching contacts, adjustable range, optional LCD display
Typical Applications	HVAC, clean room monitoring, filter surveillance, level measurement

Request a Quote for JUMO Type 4304 Pressure and Differential Pressure Transmitter

Seven Star LLC supports the full procurement cycle for the JUMO Type 4304 pressure and differential pressure transmitter, from formal RFQ submission to confirmation of availability and lead time, technical datasheet delivery, and direct consultation with our instrumentation division on measuring range, output signal, and display options for your application. With engineering support in Muscat, we supply every JUMO Type 4304 transmitter with manufacturer documentation and local technical support. Contact Seven Star LLC today to request a quotation or discuss your HVAC pressure measurement 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.

Frequently Asked Questions

What measuring principle does the JUMO Type 4304 use?

The Type 4304 uses a wear-free inductive measuring system, where a flexible diaphragm separates two pressure chambers and its deflection is detected inductively without physical contact, supporting long-term measurement stability with no mechanical wear points.

What measuring ranges does the JUMO Type 4304 cover?

The Type 4304 covers an exceptionally wide range from 0.50 mbar up to 1200 mbar differential pressure (relative), suitable for both extremely low-differential HVAC filter monitoring and higher-range general pressure applications.

Is the JUMO Type 4304 suitable for clean room monitoring?

Yes. Its very small measuring ranges and precise temperature compensation make it well suited to clean room pressure cascade verification and filter surveillance applications where small pressure differentials must be accurately monitored.

Can the JUMO Type 4304 be ordered with a local display?

Yes. An integrated LCD display is available as an optional extra, providing local pressure readout without requiring a separate indicator instrument.

Is 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.

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