Brand: JUMO

JUMO dTRANS p20 Ex d Flameproof Pressure Transmitter

Name: JUMO dTRANS p20 Ex d Pressure Transmitter | Seven Star LLC
Brand: JUMO
SKU: dTRANS p20 Ex d

Description

A flameproof pressure transmitter for zone 1 and zone 0/1 boundaries

The JUMO dTRANS p20 Ex d (type 403026) is a process pressure transmitter in a flameproof cast stainless-steel enclosure for relative or absolute pressure of gases, vapours and liquids. It carries the marking II 1/2G Ex db IIC T6 to T4 Ga/Gb and II 2D Ex tb IIIC T105 °C Db, so it can be installed up to zone 0 with the process connection in the zone 0 boundary wall. The HART 7 output shares a 4 to 20 mA loop, an LCD with bar graph shows pressure, sensor temperature and min/max values, and a rotary knob allows local setup even in the hazardous area, where JUMO notes that the JUMO interface must not be used. The SIL version has been evaluated by exida to IEC 61508 and suits process-level and pressure monitoring up to SIL 2. A non-flameproof Ex ia version is covered by datasheet 403025.

Technical specifications

Parameter	Specification
Type	403026 JUMO dTRANS p20 Ex d; extension 0 none or 2 SIL (display only, not with 508, 516, 998 or code 681)
Relative ranges	-600 to +600 mbar; -1 to +2.5, +4, +10, +25, +100, +250, +600 bar
Absolute ranges	0 to 0.6, 2.5, 4, 10, 25 and 100 bar
Accuracy	Per datasheet table as factor r x 0.12 to 0.18 % of set span with turn-down 1:20 to 1:50 over -20 to +60 °C; long-term stability 0.1 % per year
Overload and burst	6/12 bar (600 mbar ranges), 15/30 bar, 30/60 bar, 60/100 bar and above
Output	4 to 20 mA two-wire with HART 7 (code 410); response T60 190 ms or less; damping 0 to 100 s
Supply and burden	DC 12 to 36 V; burden (UB – 12 V)/0.022 A with 250 to 1100 Ω minimum HART resistance
Ex markings	II 1/2G Ex db IIC T6…T4 Ga/Gb; II 2D Ex tb IIIC T105 °C Db
Certificates	ATEX SEV 10 ATEX 0127 X (Eurofins Electrosuisse); UKEX EPS 22 UKEX 1370 X (Bureau Veritas, extra code 085); SIL exida JUMO 2203088 C001
Temperature classes	T6: medium 70 °C, ambient -40 to +60 °C; T5: 85 °C, -40 to +70 °C; T4: 115 °C, -40 to +85 °C; dust T105 °C: medium 100 °C
Process connections	G 1/2 (504), 1/2-14 NPT (512, 564 internal), G 3/4 front-flush (571), M20 x 1.5 with pin (583), DIN 11851 DN 25/40 (604, 606), clamp DN 25 to 50 (613, 616), diaphragm-seal screw version (998)
Wetted materials	316Ti (316L front-flush), membrane 316L (630 for 250 and 600 bar ranges), or Hastelloy C-276 (code 82); Ra 0.8 µm
Enclosure	Cast 1.4408 cover and lid, FPM seal; IP66; about 1.6 kg; vibration 2 g; shock 15 g/6 ms
Extra codes	085 UKEX; 100 customer settings; 452 electropolished; 591 choke; 624 oil/grease free; 630 enlarged channel; 634 TAG; 635 NACE declaration; 681 expanded ambient
Ambient limits	Function limited below -20 °C; operation not possible below -30 °C (extra code 681 widens the range to -50 °C)

Selecting configuration and options

The code is 403026/ extension – display – operation – input – output – process connection – connection material – filling medium / extra code, for example 403026/0-1-1-514-410-504-20-01/000. Display 1 is the LCD and operation 1 the control knob. Hastelloy (material 82) is limited to the higher ranges and excludes 450, 473, 472, 487, 490, 491, 493 and 513; with that option the filling medium can be 00 (without) only for ranges 508 and 516. Ranges above 25 bar exclude several hygienic connections. The NACE manufacturer declaration (635) is available only with connections 512 and 565 in Hastelloy. The UKEX variant needs extra code 085. Accessories are a USB HART modem (00443447), a PC interface (00456352), a wall or pipe holder (00597711), on-site mechanical pressure calibration including DAkkS (00758363), the setup program (00537577) and a DTM (00738288). Diaphragm seals and valve blocks are listed in datasheets 409706 and 409772 to 409786.

Oil, gas and chemical duty

Flameproof construction makes this model the go-to variant for gas processing, tank farms, compressor skids and solvent areas where an intrinsically safe loop is not available. Diaphragm seals extend it to viscous, crystallising or hot media, and Hastelloy wetted parts help in aggressive chemicals. Plan the thermal class carefully: at 85 °C ambient only T4 applies, and the dust marking limits medium temperature to 100 °C. Cable entries and sealing must follow the installation instructions for Ex d. For other hazardous-area pressure options see the published MIDAS S21 Ex and dTRANS p33, and see the pressure instrumentation category for companions.

For an enquiry in a hazardous area, give the gas group, the zone, the temperature class needed and the medium temperature, because the datasheet ties the T6, T5 and T4 classes to a medium temperature of 70, 85 and 115 °C with matching ambient limits. State the pressure range, the process connection, the wetted material (316Ti, 316L or Hastelloy C-276) and the cable entry. The enclosure is cast stainless steel and weighs about 1.6 kg, so the support should be planned. Extra codes cover UKEX, customer settings, electropolishing, a choke, oil and grease free cleaning and an extended ambient range.

Documents and quotation

The hosted document is JUMO data sheet 403026 (13 pages, English). Certificates are issued per version; confirm the delivered unit marking, range and options before installation. Seven Star LLC is an independent supplier in Muscat; send the code and area classification for a quotation.

Datasheets & Documents

Datasheet JUMO dTRANS p20 Ex d data sheet 403026 (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.