Model IS-3
WIKA model IS-3 intrinsically safe pressure transmitter with Ex ia ignition protection for hazardous areas. Measuring ranges 0…0.1 to 0…6,000 bar, 4…20 mA two-wire output, non-linearity ≤ ±0.2 % of span, and medium temperature to +200 °C.
Prices on request. Contact us for availability and quotations.
The WIKA model IS-3 is an intrinsically safe pressure transmitter for measuring points in hazardous areas. Ignition protection is Ex ia, with Equipment Protection Levels Ga, Da and Ma, and the data sheet lists ATEX, IECEx, FM, CSA, EACEx and NEPSI approvals. It is used in chemical and petrochemical plant, hydrocarbon processing, compressors and machine building.
Gauge ranges run from 0…0.1 bar to 0…6,000 bar, the top range given by WIKA as 87,000 psi; the separate psi range table runs from 0…3 to 0…15,000 psi. Output is 4…20 mA two-wire with a DC 10…30 V supply (DC 11…30 V for the field-case version). Non-linearity is ≤ ±0.2 % of span (BFSL per IEC 61298-2), long-term stability is ≤ ±0.2 % of span per year, and settling time is ≤ 2 ms. The instrument is vacuum resistant.
Wetted materials are 316Ti, 316L or S13800 depending on the measuring range and permissible temperature range, with the pressure transmission medium a synthetic oil below 25 bar and a dry measuring cell at and above 25 bar. With a G¼B, G½B, ½ NPT or R¼ connection the medium temperature reaches +200 °C [+392 °F] at a 400 bar maximum range, as does G¼A with an FKM/FPM seal; the ¼ NPT connection is limited to -20…+80 °C, and the flush process connections to +150 °C. Female threads with a sealing cone (M16 × 1.5, M20 × 1.5, 9/16-18 UNF) carry the highest ranges to 6,000 bar.
When ordering, state the measuring range, the ignition protection type and required approval scheme, the equipment protection level, the process connection, and the electrical connection — which sets ingress protection at IP65, IP67, IP68 or IP69K.
| Measuring Range (Gauge) | 0…0.1 to 0…6,000 bar (top range given by WIKA as 87,000 psi); listed psi measuring ranges 0…3 to 0…15,000 psi |
|---|---|
| Accuracy | Non-linearity ≤ ±0.2 % of span (BFSL per IEC 61298-2); long-term stability ≤ ±0.2 % of span/year |
| Output Signal | 4…20 mA (2-wire) |
| Power Supply | DC 10…30 V; DC 11…30 V for the field-case version |
| Ignition Protection | Intrinsically safe Ex ia; Equipment Protection Levels Ga, Da and Ma |
| Approvals | ATEX, IECEx, FM, CSA, EACEx and NEPSI |
| Process Connection | G¼B and G½B (EN 837); ¼ and ½ NPT (ANSI/ASME B1.20.1); M20 × 1.5 (DIN 16288); R¼ and R⅜ (ISO 7); M16 × 1.5, M20 × 1.5 and 9/16-18 UNF female with sealing cone to 6,000 bar |
| Wetted Material | Stainless steel 316Ti, 316L or S13800 depending on measuring range and permissible temperature range |
| Medium Temperature | Up to -40…+200 °C [-40…+392 °F] with G¼B, G½B, ½ NPT or R¼ (400 bar max. range), or -15…+200 °C with G¼A and an FKM/FPM seal; -20…+80 °C with ¼ NPT; flush process connections max. +150 °C |
| Ingress Protection | IP65, IP67, IP68 or IP69K per IEC 60529, according to the electrical connection |
