Pressure transmitter For demanding industrial applications WIKA data sheet PE 81.61 For further approvals, see page 13 Fnr c®usL I I L LISTED Applications ■ Critical industrial applications ■ Demanding applications in research and development ■ Harsh environments in the process industry ■ Extreme variety, available at short notice from 1 piece ■ High accuracy, low temperature error, selectable adjustment temperature ■ Special media and special versions Pressure transmitter, model S-20Description The S-20 pressure transmitter is a versatile specialist for demanding tasks and harsh environments. The measuring ranges from 0 ... 0.4 to 0 ... 1,600 bar [0 ... 5.8 to 0 ... 23,200 psi] can be combined with many output signals, electrical connections and process connections. These configuration possibilities allow for over 1 billion versions and leave much room for tailor-made customisation. The S-20 is also at home in critical industrial applications and works reliably with heat, vibrations or aggressive media. Extreme variety, available at short notice from 1 piece The S-20 can be freely configured and optimally adapted to the plant requirements. All common versions are available from a batch size of 1 within a few days. High accuracy, low temperature error, selectable adjustment temperature The S-20 measures pressures particularly accurately and reliably and is available in three accuracy classes. The selectable adjustment temperatures of +4 °C, +40 °C, +60 °C and +80 °C [+39 °F, +104 °F, +140 °F, +176 °F] reduce the temperature error to a minimum. Proven technology The S-20 is based on proven technologies, tried and tested in the field. With up to 100 million load cycles and a long-term stability to < 0.1 %, it constantly provides precise data for processes and plants. Regular audits permanently ensure highest quality standards. Special media and special versions Versions for special media, for example oxygen and hydrogen applications, high temperatures and levels of cleanliness are available. In addition, the S-20 can be delivered with IP68 and IP6K9K ingress protection. WIKA data sheet PE 81.61 • 06/2025 Page 1 of 18 Data sheets showing similar products and accessories: Pressure transmitter; for general industrial applications; model A-10; see data sheet PE 81.60 iWIKAll Smart in sensing

1) Restrictions for zero point error 0.1 % (factory-set): Available output signals: 4 ...20 mA and DC 0 ... 10 V Available measuring ranges: all gauge pressure measuring ranges specified in the data sheet Not available in combination with optional adjustment temperatures. WIKA data sheet PE 81.61 • 06/2025

Temperature error [%] Temperature error Measuring ranges, gauge pressure bar Measuring ranges, absolute pressure bar abs. 0 … 0.4 WIKA data sheet PE 81.61 ∙ 06/2025

Vacuum and compound measuring ranges 1) With oxygen and hydrogen applications. 2) With applications of hazardous fluids, liquids and gases in accordance with directive 2014/68/EU article 13, regulation (EC) no. 1272/2008 or GHS1. ^ Further overpressure limits on request. WIKA data sheet PE 81.61 • 06/2025

Process connection Standard Thread size Overpressure limit Pressure port

Process connection Standard Thread size Overpressure limit Pressure port 1) For medium temperatures to 150 °C [302 °F] or 200 °C [392 °F] available with cooling element. 2) Wider pressure port with 6 mm [0.24 in] or 12 mm [0.48 in] only feasible for measuring ranges up to and including 0 ... 40 bar [0 ... 500 psi]. ^ Other process connections and seals on request. ^ For information on process connections, see technical information IN 00.14 at www.wika.com. WIKA data sheet PE 81.61 • 06

Signal type Signal damping Signal clamping > maximum output signal / 1 mA See table “Further details on: output signal” Zero point Full scale Full scale Voltage supply WIKA data sheet PE 81.61 • 06/2025

Further details on: output signal WIKA data sheet PE 81.61 • 06/2025

Cable outlet 1) The stated IP codes only apply when plugged in using mating connectors that have the appropriate IP code. 2) Customer zero point adjustment available as an option. Other connections on request. Further details on: electrical connection Other cable lengths on request. WIKA data sheet PE 81.61 • 06/2025

WIKA data sheet PE 81.61 • 06/2025

Material (wetted) Operating conditions 1) Derating curve and formula (see following chart) WIKA data sheet PE 81.61 • 06/2025

Maximum permissible ambient temperature Tamb (Tmed < 125 °C) = 125 °C Tmed (Tamb 2 80 °C) = -1.61 x Tamb + 326 °C Tamb = ambient temperature [°C] Tmed = medium temperature [°C] Depending on the choice of seal on the process connection and the electrical connection, there may be restrictions in the medium and ambient temperature (for restrictions, see “Process connection” and “Electrical connection”). WIKA data sheet PE 81.61 • 06/2025

Options for special media Packaging and instrument labelling WIKA data sheet PE 81.61 • 06/2025

WIKA data sheet PE 81.61 • 06/2025

Angular connector DIN EN 175301-803 A Angular connector DIN EN 175301-803 C Angular connector DIN 175301- zero point adjustment ring Weight: approx. 150 g [0.331 lb] Weight: approx. 150 g [0.331 lb] Weight: approx. 150 g [0.331 lb] Circular connector M12 x 1 (4-pin) Circular connector M12 x 1 Weight: approx. 150 g [0.331 lb] Weight: approx. 150 g [0.331 lb] Weight: approx. 150 g [0.331 lb] Cable outlet IP68, FEP, IP6K9K Cable outlet 1/2 NPT conduit Weight: approx. 220 g [0.485 lb] Weight: approx. 220 g [0.485 lb] Weight: approx. 150 g [0.331 lb] WIKA data sheet PE 81.61 • 06/2025

Dimensions in mm [in] Field case ≈88,4 ≈54,5 WIKA data sheet PE 81.61 ∙ 06/2025

WIKA data sheet PE 81.61 • 06/2025

Ordering information Model / Measuring range / Overpressure limit / Output signal / Non-linearity / Adjustment temperature / Zero point setting / Process connection / Pressure port / Seal / Electrical connection / Assembly / Cable length / Shielding / Certificates / Packaging / Instrument labelling / Accessories and spare parts Standard article © 04/2013 WIKA Alexander Wiegand SE & Co. KG, all rights reserved. The specifications given in this document represent the state of engineering at the time of publishing. We reserve the right to make modifications to the specifications and materials. In...