WQ-FDO Optical Dissolved Oxygen Sensor Description
The WQ-FDO Optical Dissolved Oxygen Transmitter is an instrument designed for measuring dissolved oxygen concentrations in liquids. The WQ-FDO Optical Dissolved Oxygen Transmitters were developed to meet different requirements ranging from surface water monitoring programs to harsh waste water applications. The optical dissolved oxygen transmitter has been specifically designed to meet the demanding requirements of the environmental monitoring and scientific research sectors, providing long term, accurate and reliable dissolved oxygen measurement. The WQ-FDO Optical Dissolved Oxygen Transmitter has extremely low power requirements and a 4-20 mA output making it ideal for incorporation into remote environmental monitoring installations.
WQ-FDO Optical Dissolved Oxygen Sensor Features
| Dissolved Oxygen | |
| Partial pressure: | 0-400 mbar |
| Accuracy: | ± 0.5 % of value |
| Repeatability: | 0.01 ppm |
| Response time: | 90% in less than 60 seconds |
| Sensor Drift: | Less than 1% per year |
| Temperature: | Compensated 32 to 122°F (0 to 50°C) |
| Temperature | |
| Accuracy: | ±0.2°F (±0.1°C) |
| Resolution: | 0.02°F (0.01°C) |
| Range: | 32 to 122°F (0 to 50°C |
| Max Pressure | 35 psi (25m/82ft water depth) |
| Output | Dual 4-20 mA (Partial Pressure and Temperature) |
| Operating Voltage | 10-30 VDC |
| Current Draw | 24 mA plus both sensor outputs |
| Warm Up Time | 6 sec. min, 8 recommended |
| Operating Temperature | 32 to +122°F (0 to +50°C) |
| Sensor Construction | Acetyl, stainless steel, cast epoxy |
| Dimensions | 0.86 inch dia. x 8 inch long (22mm dia. x 202mm long) |
| Weight | 8 oz (227 g) |
| WQ-FDO Sensors | |
| Order No. | Output Type |
| WQ-FDO | Includes 25 ft of cable. Does not include armoring. |
| WQ SC-FDO | Replaceable Membrane |
| WQEXC | Extra Sensor Cable, per foot (up to 500 ft) |
| Accessories | |
| Order No. | Description |
| DD0505 | Plastic Armor Housing, 1.89 inch (48 mm) dia. |
| DD0510 | Stainless Steel Armor Housing, 1.89 inch (48 mm) dia. |
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