Pressure transmitter Intrinsic safety Ex ia Model IS-3 WIKA data sheet PE 81.58 For further approvals, see page 10 Pressure transmitter, model IS-3 ■ Chemical, petrochemical industry ■ Compressors, compressor systems Special features ■ Ignition protection type intrinsically safe (Ex ia) with Equipment Protection Level (EPL) Ga, Da, Ma ■ Large selection of common approvals for use in hazardous areas, e.g. ATEX, IECEx, FM, CSA, EACEx or NEPSI ■ Exceptionally large variety covers almost all applications -even under extreme operating conditions ■ Excellent quality and proven technology The model IS-3 intrinsically safe pressure transmitter has been designed for gas hazardous areas (EPL Ga) and can also be used with combustible dusts (EPL Da) and in mines susceptible to firedamp (EPL Ma). The model IS-3 is suitable for pressure ranges up to 6,000 bar [87,000 psi] and medium temperatures up to 200 °C [392 °F]. It features numerous approvals, such as ATEX, IECEx, FM and CSA. Thanks to the flush design variant, the IS-3 is also suitable for crystalline and viscous media, and also for applications where residue-free cleaning is needed. The model IS-3 offers many globally established approvals for use in hazardous areas - even for smaller markets. For system suppliers, approval combinations reduce the number of instrument variants that they have to keep available for their markets. The model IS-3 shines with its level of customisation and diverse integration possibilities. The high-pressure version is designed for a maximum of 6,000 bar [87,000 psi]. Depending on the configuration, ingress protection up to IP68 and use with medium temperatures up to +200 °C [392 °F] are possible. The model IS-3 and its predecessors have been used reliably for over 20 years. The consistently high quality and its reliable function are regularly confirmed by both internal and external audits. WIKA data sheet PE 81.58 • 04/2025 Page 1 of 17 Data sheets showing similar products: Pressure transmitter with flameproof enclosure; for applications in explosion-protected areas; models E-10 and E-11; see data sheet PE 81.27 IWIKAll Smart in sensing

1) Only for instruments without flush process connection. WIKA data sheet PE 81.58 • 04/2025

Measuring ranges, absolute pressure WIKA data sheet PE 81.58 • 04/2025

Process connection Thread Max. measuring range Overpressure limit in Permissible temperature ranges in °C [°F] for ignition protection type Ex ia WIKA data sheet PE 81.58 • 04/2025

WIKA data sheet PE 81.58 • 04/2025

Field case Nickel-plated brass cable gland 1) The stated IP codes only apply when plugged in using mating connectors that have the appropriate IP code. 2) In combination with FM and CSA approvals, the ingress protection is always specified as IP65. 3) Precondition: Avoidance of water accumulation in the protective cap WIKA data sheet PE 81.58 • 04/2025

Further details on: Electrical connection Cable outlet IP67 with protective cap Shield Shielding braid U+ Positive power supply terminal U- Negative power supply terminal Test+ Positive test connection Test- Negative test connection WIKA data sheet PE 81.58 • 04/2025

Material (wetted) WIKA data sheet PE 81.58 • 0

Packaging and instrument labelling Packaging Individual packaging Instrument labelling WIKA product label, glued WIKA data sheet PE 81.58 • 04/2025

European Union EN 61326 emission (group 1, class B) and immunity (industrial environments) Pressure Equipment Directive RoHS directive ATEX directive Hazardous areas Zone 1 mounting to zone 0 gas [II Zone 2 gas [II Zone 21 mounting to zone 20 dust [II 1/2D Ex ia IIIB T200 1 35 °C Da/Db] 1/2D Ex ia IIIC T135 °C Da/Db] Zone 1 mounting to zone 0 gas Zone 2 gas Zone 20 dust Zone 21 mounting to zone 20 dust ia IIA T4/T5/T6 Ga] ia IIC T4/T5/T6 Ga] ia IIC T4/T5/T6 Ga/Gb] ic IIC T4/T5/T6 Gc X] ia IIIB T200 135 °C Da] ia IIIC T135 °C Da] ia IIIB T200 135 °C Da/Db] ia IIIC T135 °C Da/Db] ia I Ma] Hazardous...

Logo Description - China RoHS directive For approvals and certificates, see website WIKA data sheet PE 81.58 • 04/2025

Bayonet connector, MIL-DTL-26482 (4-pin), adjustable Bayonet connector, MIL-DTL-26482 (6-pin), adjustable Angular connector, DIN EN 175301-803 A PG 9, adjustable Angular connector, DIN EN 175301-803 A % NPT, adjustable

Cable outlet IP67, adjustable Cable outlet IP68, cable gland, not adjustable Cable outlet IP68, cable gland conduit ½ NPT, not adjustable Cable outlet IP68, cable gland, adjustable Cable outlet IP68 PUR, (permanent use in the medium), not adjustable Cable outlet IP68 FEP, (permanent use in the medium), not adjustable WIKA data sheet PE 81.58 ∙ 04/2025

Cable outlet IP67 with protective cap, not adjustable Field case, cable gland, adjustable WIKA data sheet PE 81.58 ∙ 04/2025 Field case, conduit ½ NPT-I, adjustable Field case, conduit M20 x 1.5-I, adjustable

IS-3 for optional medium temperature ranges -40 ... +150 °C [-40 ... 302 °F] and -40 ... +200 °C [-40 ... +392 °F] Pressure transmitters in high-pressure version Angular connector, Circular connector M12 x 1, Cable outlet IP67, Adjustable DIN EN 175301-803 A PG 9, Adjustable IEC 61076-2-101 A-COD (4-pin), Adjustable Weight: approx. 0.3 kg [0.66 lb] Weight: approx. 0.3 kg [0.66 lb] Weight: approx. 0.3 kg [0.66 lb] WIKA data sheet PE 81.58 • 04/2025

Field case, Cable gland, Adjustable Process connections Sealing cone Sealing cone For further information on process connections, see technical information IN 00.14. WIKA data sheet PE 81.58 • 04/2025

Mating connector. Seal for mating connector Designation Order number Mating connector (for ignition protection type Ex ia) Ordering informationModel / Measuring range / Accuracy / Process connection / Seal / Electrical connection / Temperature range of medium © 01/2015 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 case of a different interpretation of the translated and the English data sheet, the...