Brand: JUMO

JUMO dTRANS p20 DELTA Ex d DP Transmitter, Type 403023

Name: JUMO dTRANS p20 DELTA Ex d DP Transmitter | Seven Star LLC
Brand: JUMO
SKU: 403023

Description

A flameproof differential pressure transmitter with HART and SIL option

The JUMO dTRANS p20 DELTA Ex d (type 403023) measures the differential pressure of gases, vapours and liquids in a stainless steel flameproof enclosure. It has an LCD with bar graph, a rotary knob for on-site operation, a 4 to 20 mA output with HART 7 and a silicon sensor with a stainless steel separating diaphragm. The datasheet gives a linearity of 0.07 % and states that the device is marked II 1/2G Ex db IIC T6 to T4 Ga/Gb and II 2D Ex tb IIIC T105 °C Db, with the flameproof version installable in zone 0 under the special conditions of use. The HART version with a SIL basic type extension is certified by exida to IEC 61508 for level and process pressure monitoring up to SIL 2. Typical jobs are filter differential pressure, flow with orifice plates or pitot tubes, and level in closed tanks.

Technical specifications

Parameter	Specification
Type	403023 dTRANS p20 DELTA Ex d, differential pressure transmitter
Nominal ranges	-10 to +10 mbar; -1 to +1 bar; 0 to 1 bar; -1 to +6 bar; -1 to +100 bar DP
Nominal pressure	PN 2 for the 10 mbar range; PN 210 for other ranges; PN 420 with extra code 694
Accuracy at 20 °C	0.1 % of set span for r up to 10 on the 1 bar ranges, 0.2 % for r up to 2 on the 10 mbar range; non-linearity 0.07 % to 0.1 %
Turndown	r up to 20, 400, 200, 20 or 40 depending on range; smallest span 1 mbar to 2.5 bar
Long-term stability	Up to 0.1 % per year on the 1 bar ranges; 0.6 % per year on the 10 mbar range
Output	4 to 20 mA two-wire with HART 7; step response T60 up to 190 ms; damping 0 to 100 s
Supply	DC 12 to 36 V; burden up to (UB – 12 V) / 0.022 A, 250 to 1100 Ω with HART
Process connection	1/4 in. 18 NPT to DIN EN 837, or screwed diaphragm seal version
Wetted materials	316L, tantalum or Hastelloy C-276 process connection; 316 flange; PTFE seal
Filling oil	Silicon oil or halogenated oil for oxygen applications
Display	LCD two-line with bar graph, 5 digits, rotatable in 90° steps; housing rotatable ±160°
Housing	Stainless steel 1.4408 with FPM cover seal; about 4.0 kg, plus 3.8 kg for PN 420
Ex marking	II 1/2G Ex db IIC T6 to T4 Ga/Gb; II 2D Ex tb IIIC T105 °C Db; ATEX SEV 10 ATEX 0127 X; UKEX with extra code 085
Functional safety	exida certificate JUMO 2203088 C001 to IEC 61508, up to SIL 2, basic type extension 2
Ambient	-40 to +60 °C (T6), +70 °C (T5), +85 °C (T4); -50 °C with extra code 681
Protection	IP66; vibration 2 g (10 to 500 Hz); shock 15 g for 6 ms

Order code and accessories

The order code builds from the basic type extension (0 none or 2 SIL), display, rotary knob, nominal range 530 to 534, output 410 for 4 to 20 mA with HART, process connection 511 or 998, connection material 20, 80 or 82, filling oil 01 or 02, and extra codes. Extra codes include 374 for a 3.1 material certificate, 624 for oil and grease free cleaning, 633 mounting brackets for a 2 in. tube, 634 TAG number and 694 for PN 420. The SIL version is available only with output 410, the display and connection material 20. Accessories are a USB PC interface (00456352), a USB HART modem (00443447), a mounting bracket (00543777), valve blocks (datasheet 409706), and diaphragm seals for hygienic and process connections (datasheets 409772 to 409786).

Installation and application notes

The transmitter can be mounted in any position and is calibrated upright with the process connection at the bottom, so a position-related zero shift of up to 1 mbar can be corrected on site or in the setup program. The JUMO interface must not be used in an explosive atmosphere, where operation is by the rotary knob or HART. Below -20 °C the function is limited, and below -30 °C the datasheet states that operation is not possible. From -40 to -50 °C with the extended code the device must stay permanently in operation and the inspection-glass cover must be protected from impact. In oil and gas and petrochemical plants use it with a valve block and condensate pots on filter and strainer monitoring, orifice-plate flow measurement and closed-vessel level. Accuracy degrades outside 20 °C, for instance to 0.2 % between 20 and 85 °C for the 1 bar ranges and to 0.6 % between -40 and +20 °C, so state the process and ambient temperature when choosing the span and turndown.

Using the dTRANS p20 DELTA Ex d in Oman and the GCC

Flameproof differential pressure transmitters are common in the region’s oil and gas, refining, petrochemical and gas processing plants. Typical duties are flow measurement across orifice plates and venturis, filter differential pressure, level in pressurised vessels and pump and compressor monitoring. The HART output allows configuration and diagnostics from the control room or a handheld communicator, and the SIL option supports use in safety functions when the safety manual is followed.

Installation must follow the Ex certificate and local regulations, including cable glands and earthing. Mount the transmitter with a valve manifold for isolation and equalising, route impulse lines with the correct slope for the medium, and keep the transmitter out of direct sun where possible, or use a sunshade, because surface temperatures in summer can be very high.

Send the instrument datasheet or tag list where available, so every transmitter is checked against the project data.

Information to send with an enquiry

Range, static pressure and medium
Process connection and wetted materials
Ex approval, SIL requirement and cable entry thread
Manifold, mounting bracket and accessories

Documents and quotation

The hosted document is JUMO data sheet 403023 (12 pages, English). It includes dimensions, certificates and order details. Confirm range, material, filling oil, SIL option and approvals before ordering. Seven Star LLC is an independent supplier in Muscat; send the process data and area classification for a quotation. To help us prepare an accurate quotation, please include the medium, pressure range, overload needs, required output signal, hazardous-area requirements and supply voltage, together with the quantity needed and the delivery location. We will then compare these details with the order information in the datasheet.

Datasheets & Documents

Datasheet JUMO 403023 data sheet 403023 (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.

FAQ

Questions about the JUMO dTRANS p20 DELTA Ex d DP Transmitter, Type

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

01What does the p20 DELTA Ex d measure?

Differential pressure of gases, vapours and liquids, with ranges from -10 to +10 mbar up to -1 to +100 bar.

02Does it support HART?

Yes, output 410 provides 4 to 20 mA with HART version 7.

03Is there a SIL version?

Yes, the version with basic type extension 2 is exida certified to IEC 61508 for use up to SIL 2.

04What explosion protection does it carry?

Ex db IIC T6 to T4 Ga/Gb and Ex tb IIIC T105 °C Db, with ATEX certificate SEV 10 ATEX 0127 X and UKEX with extra code 085.

05Which materials touch the process?

316L, tantalum or Hastelloy C-276 connection with a 316 flange and PTFE seal, with silicon or halogenated filling oil.