冬斯-高壓壓力開關(guān)
應(yīng)用
燃燒器控制中的壓力監(jiān)測系統(tǒng),適用于氣體族 1、2、3 的氣體和其他中性氣體介質(zhì),如以及空氣、煙氣和燃燒產(chǎn)品。
批準
EC型式測試證書:
? EC-燃氣器具法規(guī)
? EC 壓力設(shè)備指令
其他重要耗氣領(lǐng)域的審批國家。
GW…A4 惠普
壓力抵消了力量微動開關(guān)上的設(shè)置彈簧通過金屬波紋管。 壓力開關(guān)不需要電源輔助。
壓力開關(guān) GW…A4 HP
切換機制對超壓并關(guān)閉、打開或切換電流電路時,超過的壓力設(shè)定值或不足。
所有載氣部件均由1.4541 不銹鋼,因此,適用于:
- 涉及操作壓力的應(yīng)用大于 600 毫巴
- 腐蝕性介質(zhì),如硫酸酸濃度高達 1.0 %按體積,潮濕
- 液體(根據(jù)要求)
| Specifications | ||
| Max. operating pressure | GW 500 A4 HP | pmax = 2 bar (gas) @ setting range 0.1 - 0.15 bar |
| | pmax = 5 bar (gas) @ setting range 0.15 - 0.5 bar | |
| GW 2000 A4 HP | pmax = 5 bar (gas) | |
| GW 6000 A4 HP | pmax = 8 bar (gas) | |
| Pressure connection | p+: centrally on underside of housing internal thread G 1/4 and Rp 1/4, Gas or air | |
| Temperature range | Ambient temperature | -15 °C to +70 °C |
| Medium temperature | -15 °C to +70 °C | |
| Storage temperature | -30 °C to +80 °C | |
| Materials | GW…A4 HP | |
| Housing lower section | aluminium die casting | |
| Switch | polycarbonate | |
| Switching contact | standard:silver gold-plated (Au), suitable for DDCapplications: DC 24 V; 0,02 A | |
| Metal bellows | 1.4541 (stainless steel) | |
| Hood | polycarbonate | |
| GW…A4/2 HP | ||
| Hood | die cast zinc, powder coated | |
| Switching voltage | | AC eff. min. 24 V max. 250 V |
| | DC min. 24 V max. 48 V | |
| DDC application: | DC min. 5 V max. 24 V | |
| Nominal current | | AC eff. 10 A |
| DDC application: | DC max. 20 mA | |
| Switching current | | AC eff. min. 20 mA max. 6 A with cos ? 1 |
| | AC eff. max. 3 A with cos ? 0,6 | |
| | DC min. 20 mA max. 1 A | |
| DDC application: | DC min. 5 mA max. 20 mA | |
| Electrical connection | Plug connection for line sockets as pert | |
| DIN EN 175 301-803, 3-pin with protection contact | IP 54 to IEC 529 (EN 60529), (clear hood) | |
| Degree of protection | GW…A4 HP | IP 65 to IEC 529 (EN 60529), (metal housing) |
| GW…A4/2 HP | | |
| Adjustment | With rising pressure and installed in a vertical position. | |
| Optional rising or dropping pressure adjustment on-site possible. | ||
| Note switch point change if installation position changes.. | ||
| Setting tolerance | ±15% switch point deviation based on the setpoint and with unit installed in a vertical position | |
| Deviation | Permissible deviation of the set value ≤ ± 15 % in the service life test according to EN 1854 | |



































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