| 品牌 | HAMILTON/哈美頓 | 供貨周期 | 現貨 |
|---|
VisiPro DO 225
產品介紹
貨號：243421
*根有防爆認證的光學溶解氧氧電極
VisiPro DO 225是*的能夠用于防爆區域的光學溶解氧電極。
詳細介紹
光學測量原理改善了測量的性能，簡化了維護的程序。改善性能是相對于傳統的電化學（電流法）電極，不受流速的影響，快速啟動無需極化時間，維護十分簡單。
內置變送器，電極可以直接和過程控制系統通過4~20毫安信號或者數字信號HART相連接。所有相關的數據，包括校準信息，診斷信息等都儲存在電極頭中簡化了校準和維護的程序，附加的無線通訊功能可以使電極直接和你的電腦相連接，簡化了實驗室校準、設置和維護程序。
為什么選擇VisiPro DO Ex？
- ATEX/IECEx認證證書
- 穩定可靠的光學測量
- 2線制接線方式簡單
- 使用HDM軟件進行實驗室校準
- 內置變送器，能夠和控制系統通過4~20毫安信號和數字HART信號進行通訊
簡化了校準和維護程序:
- 堅固的電極體設計
- 容易更換的溶氧帽
- 無線模式易于進行監測、設置和校準
- 電極狀態和自診斷功能
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 |
