WIKA · Pressure measurement · Family APW
Absolute pressure switch
Absolute pressure switch with stainless steel enclosure, suitable for safety-critical applications in chemical, petrochemical, oil and gas industries.
Range
0…1.5 bar
Accuracy
≤ 1 % of span
Protection
IP66
CERoHSCCCKOSHAEACEx-UkraineATEXIECExEACExEx ia I MaEx ia IIIC T85°C/T135°C Da IP66Ex ia IIC T6/T4 GaEx ia IIC T6/T4
Price
On request
Depends on configuration
Description
These high-quality pressure switches have been developed especially for safety-critical applications. The high quality of the products and manufacturing in accordance with ISO 9001 ensure reliable monitoring of your plant. In production, the switches are traced by quality assurance software at every step and subsequently are 100 % tested.
In order to ensure as flexible operation as possible, the absolute pressure switches are fitted with micro switches, which enable the switching of an electrical load of up to AC 250 V, 20 A directly.
Special features
- No power supply needed for switching of electrical loads
- Robust switch enclosure from stainless steel 316L, IP66, NEMA 4X
- Setting ranges from 0 ... 25 mbar abs. up to 0 ... 1.5 bar abs.
- Intrinsic safety Ex ia available
- 1 or 2 independent set points, SPDT or DPDT, high switching power up to AC 250 V, 20 A
Identification
| Model | APW |
| Subcategory | Absolute pressure switch |
Measuring range
| Pressure ranges | 0…0.16 bar · 0…0.25 bar · 0…0.4 bar · 0…0.6 bar · 0…1 bar · 0…1.5 bar · 0…25 mbar · 0…40 mbar · 0…60 mbar · 0…25 mbar abs. · 0…40 mbar abs. · 0…60 mbar abs. |
Accuracy
| Accuracy class | ≤ 1 % of span |
| Accuracy standard | IEC 61298-2:2008 |
| Safety integrity level (SIL) | SIL 3-capable |
Process conditions
| Process connection | ¼ NPT femaleG ¼ female½ NPT maleG ½ A maleG ¼ A male½ NPT femaleM20 x 1.5 male½ NPTG ½ AG ¼ AM20 x 1.5 |
| Process temperature | −30…+85 °C |
Electrical characteristics
| Electrical connection | ½ NPT female |
| Switching function | SPDT or DPDT |
| Switching contacts | 2 |
Materials
| Case material | stainless steel 316L |
| Wetted parts material | AISI 316, AISI 316L |
| Sealing material | NBR |
Operating environment
| Ambient temperature | −30…+85 °C |
| IP rating | IP66 |
| Weight | 5.5 kg |
Certifications and approvals
| Certifications | CERoHSCCCKOSHAEACEx-UkraineATEXIECExEACEx |
| Explosion protection | Ex ia I MaEx ia IIIC T85°C/T135°C Da IP66Ex ia IIC T6/T4 GaEx ia IIC T6/T4 |
Additional details
| Datasheet languages | EN |
Tables from datasheet
| Ambient | T6/T85°C | T a -30 ...+60 °C |
|---|---|---|
| T6/T135°C | T a -30 ...+85 °C | |
| Other versions | T a -30 ...+85 °C |
Maximum values
| Voltage U i | DC 30V |
|---|---|
| Current l i | 100mA |
| Power P i | 0.75W |
| Internal capacitance C i | 0 μF |
| Internal inductance L i | 0mH |
| Contact version | Electrical rating (resistive load) | Suitable for Ex ia option | ||
|---|---|---|---|---|
| AC | DC | |||
| UN | 1 x SPDT, silver | 250 V, 15 A | 24 V, 2 A, 125 V, 0.5 A, 220 V, 0.25 A | No |
| US | 1 x SPDT, silver, hermetically sealed, argon gas filling 2) | 250 V, 15 A | 24 V, 2 A, 220 V, 0.5 A | Yes |
| UO | 1 x SPDT, gold-plated, hermetically sealed, argon gas filling 2) | 125 V, 1 A | 24 V, 0.5 A | Yes |
| UG | 1 x SPDT, gold-plated | 125 V, 1 A | 24 V, 0.5 A | No |
| UR | 1 x SPDT, silver, adjustable dead band | 250 V, 20 A | 24 V, 2 A, 220 V, 0.5 A | Yes 3) |
| DN | 2 x SPDT or 1 x DPDT, silver | 250 V, 15 A | 24 V, 2 A, 125 V, 0.5 A, 220 V, 0.25 A | No |
| DS | 2 x SPDT or 1 x DPDT, silver, hermetically sealed, argon gas filling 2) | 250 V, 15 A | 24 V, 2 A, 220 V, 0.5 A | Yes |
| DO | 2 x SPDT or 1 x DPDT gold-plated, hermetically sealed, argon gas filling 2) | 125 V, 1 A | 24 V, 0.5 A | Yes |
| DG | 2 x SPDT or 1 x DPDT, gold-plated | 125 V, 1 A | 24 V, 0.5 A | No |
| Measuring cell | Setting range | Working range | Proof pressure | Fixed dead band for contact version | Adjustable dead band for contact version | |
|---|---|---|---|---|---|---|
| in bar abs. | in bar abs. | in bar abs. | 1 contact UN, US, UO, UG in mbar abs. | 2 contacts DN, DS, DO, DG in mbar abs. | 1 contact UR in mbar abs. | |
| L | 0 ... 0.16 | 0 ... 1.5 | 11 | ≤ 5 | ≤ 5 | 20 ... 60 |
| 0 ...0.25 | ≤ 8 | ≤ 8 | 30 ... 90 | |||
| H | 0 ... 0.4 | ≤ 20 | ≤ 20 | 30 ... 90 | ||
| 0 ... 0.6 | ≤ 25 | ≤ 25 | 40 ... 125 | |||
| 0 ... 1 | ≤ 30 | ≤ 30 | 100 ... 270 | |||
| 0 ... 1.5 | ≤ 65 | ≤ 65 | 110 ... 320 |
View all (6)
| Measuring cell | Setting range | Working range | Proof pressure | Fixed dead band for contact version | Adjustable dead band for contact version | |
|---|---|---|---|---|---|---|
| in mbar abs. | in bar abs. | in bar abs. | 1 contact UN, US, UO, UG in mbar abs. | 2 contacts DN, DS, DO, DG in mbar abs. | 1 contact UR in mbar abs. | |
| 10 | 0 ... 25 | 0 ... 1 | 2 | ≤ 1.2 | ≤ 1.6 | 3 ... 8 |
| 0 ... 40 | ≤ 1.6 | ≤ 2.2 | 4 ... 11 | |||
| 0 ... 60 | ≤ 2.0 | ≤ 2.5 | 5 ... 14 |
| Logo | Description | Country |
|---|---|---|
| EU declaration of conformity ■ Pressure equipment directive ■ Low voltage directive ■ RoHS directive ■ ATEX directive 2) IM1 II1GD | European Community | |
| IECEx 2) Ex ia I Ma Ex ia IIC T6/T4 3) Ga Ex ia IIIC T85°C/T135°C 3) Da IP66 | International | |
| EAC (option) Hazardous areas 2) | Eurasian Economic Community | |
| Ex-Ukraine (option) Hazardous areas 2) | Ukraine | |
| CCC (option) Hazardous areas 2) | China | |
| KOSHA (option) Hazardous areas 2) | South Korea |
Industry
Energy
Safety-critical applications in general process instrumentation, especially in the chemical and petrochemical industries, oil and gas industries, power generation incl. nuclear power plants, water/wastewater industries, mining
Industry
Machinery
Absolute pressure monitoring and control of processes
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