Brand: JUMO

JUMO exTHERM S200 Ex-ia Surface-Mounted Thermostat

Name: JUMO exTHERM S200 Ex-ia Thermostat | Seven Star LLC
Brand: JUMO
SKU: exTHERM S200

Description

Thermostat for intrinsically safe circuits in process and plastics plants

The JUMO exTHERM S200 (type 605058) is a surface-mounted thermostat for intrinsically safe applications [Ex-ia]. It monitors and controls temperatures as a temperature monitor TW, a safety temperature monitor STW or a safety temperature limiter STB, and the data sheet names recycling and distillation plants as well as temperature control units as typical uses.

Together with ATEX protective sleeves, the device is suitable for installation in explosion-protected zones 0, 1 or 2 for gases, vapors and mists, or zones 21 or 22 for conductive and non-conductive dusts. The manufacturer lists the process industry, the plastics industry and mechanical and plant engineering as areas of application.

Push-In terminal technology speeds up wiring, an optional NAMUR circuit is available, temperature compensation keeps the switching point steady, and the device is free of cadmium.

The unit uses the same JUMO exTHERM family idea as other Ex thermostats, but this type is built for the intrinsically safe circuit. Its snap-action switch can be gold-plated for the small currents of Ex-i circuits, and the NAMUR option allows connection to a standard switch amplifier.

Technical specifications

Parameter	Specification
Type	605058; TW 0002, STW 0020, STB 0070 and double-thermostat combinations (0202, 0220, 0270, 2020, 2070, 7070)
Design	Rigid thermowell (1) or capillary (2); mounting type independently mountable
Control ranges	0 to 100, 0 to 200, 20 to 400, 20 to 500 °C (TW); 40 to 110, 80 to 200, 150 to 350, 300 to 400, 350 to 500 °C (STW/STB)
Switching differential	Without, about 2.5 % or about 7 %
Switching capacity	Ex-i circuits: AC/DC 24 V, 0.1 A with gold-plated snap-action switch; minimum 10 V, 5 mA
Ex-i values	Ui up to 30 V, Ii up to 100 mA, Pi up to 750 mW; inner inductance and capacity about zero
Capillary	Diameter 1.5 mm; length up to 5000 mm for lower ranges, up to 3000 mm for 300 to 500 °C; bending radius at least 5 mm
Probe	6 mm diameter in copper (to 200 °C) or stainless steel 1.4571; 4 and 8 mm options in some ranges
Max. probe temperature	15 % of the limit value or maximum set value, or 25 K
Housing	Glass-fiber reinforced polyester, black, conductive carbon black-doped surface; IP65
Cable entries	Ex cable glands M20 x 1.5 (6 to 13 mm) and M25 x 1.5 (7 to 17 mm)
Ambient temperature	-40 to +75 °C storage and use
Weight	1.2 kg single thermostat, 2.0 kg double thermostat
Standard	Mode of operation per DIN EN IEC 60730-2-9:2021, type 2

Selecting range, probe and function

The probe table gives each control range with its maximum probe temperature, probe length for 4, 6 and 8 mm diameters and a tolerance. For example, the 150 to 350 °C STB/STW range has a maximum probe temperature of 370 °C and a probe length of 82 mm at 6 mm, and the 0 to 100 °C TW range has a tolerance of +/-1.5 K.

The tolerance on STB and STW versions is stated as a negative offset, such as -9 K for the 40 to 110 °C range and -29 K for 350 to 500 °C, measured in the upper third of the scale or at the limit value. Keep this in mind when you set a limit value close to the permitted process maximum.

Rigid thermowell versions with extra code 702 for Ex-i service, and capillary versions with probe lines up to 5 m, allow either a direct insertion or a remote probe. The data sheet also lists mounting-plate dimensions and the thermowell options.

Order code elements include the design (rigid thermowell or capillary), control range for each thermostat, a switching capacity code 12 for 0.75 W, 30 V and 0.1 A, switching differential choices and capillary and probe details. Extra codes such as 702 for Ex-i versions with rigid shaft change the permitted medium temperature, so check the process connection table.

Safety functions follow the usual logic: the STB locks after trip and must be unlocked by hand after cooling, and STW and STB include self-monitoring of the measuring system. The mode of operation is type 2 according to DIN EN IEC 60730-2-9, with STB action types 2B, 2F, 2H, 2K, 2L, 2N, 2P and 2V.

Applications and conditions of use

This device suits plants where the switching circuit comes from an intrinsically safe isolating amplifier or barrier, such as a heated distillation vessel, a recycling plant or a temperature control unit. Intrinsically safe circuits require matching associated apparatus with values at or below those in the table.

Observe the special conditions for safe use stated in the certificates before installation, and download the certificates for your version from the manufacturer website. A switching point shift occurs when the ambient temperature at the head or capillary differs from the 22 °C calibration value, with a higher ambient giving a lower switching point.

The bending radius of the capillary must be at least 5 mm, and its length is limited to 5000 mm, or 3000 mm for the highest ranges. The device can be mounted in any position, and rated position follows DIN 16257 from NL 0 to NL 90.

Documents and quotation

This page carries the manufacturer PDF (JUMO exTHERM S200 data sheet 605058 (EN, 9 pages)) for checking dimensions and order codes. Use the quotation form to name the exact variant, options and delivery address, and we will answer with supply information. See also Temperature Instrumentation for similar instruments.

Datasheets & Documents

Datasheet JUMO exTHERM S200 data sheet 605058 (EN, 9 pages) 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.