Brand: JUMO

JUMO SIRAS P21 AR SIL HART Process Pressure Transmitter

Name: JUMO SIRAS P21 AR Pressure Transmitter | Seven Star LLC
Brand: JUMO
SKU: SIRAS P21 AR

Description

A SIL-assessed gauge and absolute pressure transmitter with HART 7

The JUMO SIRAS P21 AR (type 403028) measures gauge or absolute pressure of gases and liquids without solids content. It outputs 4 to 20 mA with HART 7, shows values, bar graph and device data on a 96 x 32 pixel dot-matrix LCD with a 27 x 9 mm main field, and is configured by an internal rotary knob, by a HART handheld or by a PC setup program. The housing and sensor are stainless steel. The HART version has been assessed for functional safety and certified by TUV Nord to EN 61508 parts 1 to 3, edition 2.0, so it can be used for process fill-level and pressure monitoring up to SIL 2; the Safety Manual gives the conditions. Reference accuracy is 0.05 percent and the turn-down can reach 1:50. The differential version of the series is JUMO SIRAS P21 DP, datasheet 403024.

Technical specifications

Parameter	Specification
Type	403028 JUMO SIRAS P21 AR, process pressure transmitter, 4 to 20 mA two-wire with HART protocol version 7
Relative ranges	-600 to +600 mbar; -1 to +2.5, +4, +10, +25, +100 bar; -1 to +250 and +400 bar are marked in preparation
Absolute ranges	0 to 0.6, 2.5, 4, 10, 25 and 100 bar
Overload and burst	From 6 bar overload and 12 bar burst (600 mbar ranges) to 300 bar overload and 400 bar burst (100 bar ranges)
Smallest span	60 mbar (600 mbar ranges), 0.1 bar (2.5 and 4 bar), 0.5 bar (10 and 25 bar), 5 bar (100 bar)
Reference accuracy	0.05 % of span up to turn-down 2.5:1 to 10:1 depending on range; 0.02 x r beyond; long-term stability 0.05 to 0.07 % at 1 year
Output	4 to 20 mA with HART 7; T63 200 ms or less; damping 0 to 100 s; linear or square-root; failure signals per NAMUR NE 43 (3.6 or 21.6 mA)
Loop supply	DC 11.5 to 36 V (non-Ex); load 250 to 1100 Ω with HART; residual ripple under 3 %
Display	Dot-matrix LCD with LED backlight, 20-segment bar graph, SIL pictogram, min/max pressure, sensor temperature; languages DE, EN, FR, ES, RU
Medium and ambient temperature	Medium -40 to +85 °C; ambient -40 to +85 °C (cable fitting) or -25 to +85 °C (M12 plug); display works -20 to +85 °C
Protection	IP66/IP67 (EN 60529); vibration 2 g (10 to 2000 Hz); shock 15 g/6 ms; EMC to EN 61326-3-1 and NAMUR NE 21
Functional safety	TUV Nord certified to EN 61508-1/-2/-3 ed. 2.0 for the 4-20 mA HART version, up to SIL 2
Explosion protection	ATEX/IECEx ia and ia+d versions are marked in preparation on the datasheet; NEPSI and EAC in preparation
Housings and weight	1 short 1.4404 (about 550 g, M12 plug); 2 long 1.4404 (about 850 g); 3 long precision casting 1.4408 (about 1600 g)
Process connections	G 1/2 EN 837 (504), 1/2-14 NPT (512), G 1/4 (521), G 1/2 (523), M20 x 1.5 (559), M20 x 1.5 with pin (583); 316Ti, FPM seals on 521/523/559

Decoding the 15-step order code

The code is long because it fixes every option: 403028/ extension – explosion protection – housing – electrical connection – lid material – display – operation – input range – output – process connection – medium temperature – connection material – filling medium / extra code. The datasheet example is 403028/000-0-1-36-20-1-1-450-410-504-1-20-01/000: no explosion protection, short stainless housing with M12 plug, display with rotary knob, -600 to +600 mbar, HART output, G 1/2 and silicone oil filling. Housing 1 is only available with the M12 plug (36); housings 2 and 3 use the metal cable fitting (93). Extra codes are 100 customer configuration, 624 oil and grease free and 634 TAG number. Accessories include a USB HART modem (00443447), a wall or 2-inch pipe holder (00597711), M12 cable boxes, an Ex-i repeater supply 707530/38 (00577948) and the SIRAS P21 setup program (00770008).

Fit for safety and process loops

The transmitter is aimed at minimum and maximum pressure and fill-level monitoring where a safety function is credited, such as high-pressure trips on separators and line-pressure supervision in utilities. Its stainless wetted parts are not suitable for heating oil according to the datasheet, and the medium must not corrode 316L. Because the ratings above are datasheet values, verify Ex certificates against the delivered unit, since the Ex versions are listed as in preparation. For a differential companion see the published SIRAS P21 DP; for a process transmitter without SIL see the dTRANS p20. Browse the pressure instrumentation category for diaphragm seals and valve blocks.

A quotation request should give the measuring range, the smallest span you expect to calibrate, the medium, the process connection, and the housing type from short to long precision casting. State whether the HART 7 output with a display is wanted and whether a safety function up to SIL 2 is required, because the certificate applies to the 4 to 20 mA HART version. The loop needs 11.5 to 36 V DC and a load of at least 250 ohms for HART. Explosion-protected versions are marked as in preparation on the datasheet, so please confirm their availability before ordering for hazardous areas.

Documents and quotation

The hosted document is JUMO data sheet 403028 (13 pages, English). Several ranges and the explosion-protection variants are marked in preparation, so confirm availability before ordering. Seven Star LLC is an independent supplier in Muscat; send the code and process data for a quotation.

Datasheets & Documents

Datasheet JUMO SIRAS P21 AR data sheet 403028 (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.