VisiPro DO 225
產(chǎn)品介紹
貨號(hào)：243421
根有防爆認(rèn)證的光學(xué)溶解氧氧電極
VisiPro DO 225是的能夠用于防爆區(qū)域的光學(xué)溶解氧電極。
詳細(xì)介紹
光學(xué)測(cè)量原理改善了測(cè)量的性能，簡(jiǎn)化了維護(hù)的程序。改善性能是相對(duì)于傳統(tǒng)的電化學(xué)（電流法）電極，不受流速的影響，快速啟動(dòng)無(wú)需極化時(shí)間，維護(hù)十分簡(jiǎn)單。
內(nèi)置變送器，電極可以直接和過(guò)程控制系統(tǒng)通過(guò)4~20毫安信號(hào)或者數(shù)字信號(hào)HART相連接。所有相關(guān)的數(shù)據(jù)，包括校準(zhǔn)信息，診斷信息等都儲(chǔ)存在電極頭中簡(jiǎn)化了校準(zhǔn)和維護(hù)的程序，附加的無(wú)線通訊功能可以使電極直接和你的電腦相連接，簡(jiǎn)化了實(shí)驗(yàn)室校準(zhǔn)、設(shè)置和維護(hù)程序。
為什么選擇VisiPro DO Ex？
- ATEX/IECEx認(rèn)證證書
- 穩(wěn)定可靠的光學(xué)測(cè)量
- 2線制接線方式簡(jiǎn)單
- 使用HDM軟件進(jìn)行實(shí)驗(yàn)室校準(zhǔn)
- 內(nèi)置變送器，能夠和控制系統(tǒng)通過(guò)4~20毫安信號(hào)和數(shù)字HART信號(hào)進(jìn)行通訊
簡(jiǎn)化了校準(zhǔn)和維護(hù)程序:
- 堅(jiān)固的電極體設(shè)計(jì)
- 容易更換的溶氧帽
- 無(wú)線模式易于進(jìn)行監(jiān)測(cè)、設(shè)置和校準(zhǔn)
- 電極狀態(tài)和自診斷功能
Specifications
| Measurement Principle | Oxygen dependent luminescence quenching |
| Measuring Range | 4 ppb to 25 ppm (DO) or 0.1 to 600 mbar (pO2) |
| Oxygen Consumption | None |
| Required Flow | None |
| Response Time t98% | < 30 s at 25 °C, from air to nitrogen |
| Temperature Sensor | NTC 22 kOhm |
| Drift at Room Temp. under Constant Conditions | < 1 % per week |
| Configurable Values | DO: mbar; %-sat; %-vol; µg/l; mg/l; ppb/ppm (gas); ppb/ppm (dissolved oxygen); Temperature: °C |
| Autoclavable | No |
| CIP | Yes |
| Steam Sterilizable | Yes, max. temperature 140°C |
| Process Temperature | -20 to 140 °C; the Sensor provides no DO reading above 85 °C |
| Pressure Range | 0 to 12 bar |
| O-ring Material | EPDM (FDA approved) |
| Surface Quality of Steel | Ra < 0.4 µm (N5) |
| Protection Rating | IP 68 |
| Certificate | Yes, with parameter settings and materials used |
| Serial Number | Yes |
| a-length | 120 mm |
| Diameter | 12 mm |
| Process Connection | PG13,5 |
| Electrical Connector | M12 |
| Analog Interface 1 | 4-20 mA for DO, programmable |
| 4 - 20 mA accuracy | < 0.3% current value + 0.05 mA |
| 4 - 20 mA current range | 3.5 to 22 mA |
| Operating Voltage | 18 to 30 VDC |
| Digital HART Interface | HART Version 7.0 |
| Analog Interface | Two wire sink needs to be powered by external power supply |
| Wetted Parts | Stainless steel 1.4435, Silicone (FDA approved), EPDM |
| Electrolyte | None |
| Membrane / Cap | Only compatible with H cap; Cap needs to be ordered separay |
| Accuracy at 25 °C | 1 ± 0.05%-vol: 21± 0.2%-vol; 50 ± 0.5%-vol |
| Digital HART Interface | HART Version 7.0 |
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