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Flowbar-1 Specifications: |
| Technology: Fuel cell, not harmed by moisture, CO2 or particulates; 18-36 month life, user-replaceable (5 minutes). |
| Range: Oxygen: 0 - 100% (best accuracy above 1%) or 0 - 105 kPa O2 partial pressure; barometric pressure 30 - 110 kPa. |
| Accuracy and Resolution: At constant temperature, accuracy better than 0.1% of full scale, 1 - 100% oxygen, resolution 0.0001%O2; Barometric pressure accuracy better than 0.05% of full scale, resolution 0.0001 kPa. |
| Noise and Drift: At constant temperature, flow rate and oxygen concentration: Noise < 0.002% pk-pk over 20 minutes; Drift < 0.01% over 24 hours. |
| Response time: < 7 seconds for 10-90% of a step change at 200 ml/minute (can be substantially reduced during data analysis). |
| Flow Rate and Moisture:Effect of flow rate on readings from 20 - 500 ml/minute is negligible; not damaged by moisture; particulates are trapped by built-in filter. |
| Barometric Pressure Compensation: Executed in floating-point math; eliminates drift caused by variations in barometric pressure. |
| Four Analog Outputs: Oxygen (5 ranges, 3 ranges zero-suppressed); Barometric pressure (3 ranges, 2 ranges zero-suppressed); Temperature (3 ranges, 2 ranges zero-suppressed); User-defined. 0-5V output with 16 bit resolution on all outputs. |
| Serial Data Output: Comma delimited ASCII string of all measured parameters, resolution 0.0001 %/kPa, 0.001 C, standard RS-232 serial, baud rate adjustable from 9600-115200, polled or auto-sent at user definable intervals from 0.2 - 600 seconds. |
| Digital Filtration: Adjustable from zero to 50 seconds for 0-63% of a step change, in 0.2 second increments. |
| Internal A/D Conversion: 24 bits, individual converters for oxygen and pressure + temperature. |
| User Interface: Intuitive menu system backed by nonvolatile memory of user settings. Single-click spanning at default span settings. |
| Panel Display: Digital 2-line alphanumeric LCD, simultaneous display of oxygen (0.0001 % or 0.0001 kPa resolution) and barometric pressure (0.0001 kPa resolution). |
| Temperature Compensation: Internal to the fuel cell, optimized over 15 – 45 °C range; External optionally uses temperature data (full details supplied on request). |
| Tubing Fittings: Nickel plated barb fittings for 1/8" (3 mm) i.d. flexible or semi-rigid tubing; other fittings available to special order. |
| Power Requirements: 9 - 24VDC (12 VDC nominal), < 100 mA. 110VAC or 220VAC adapter supplied. |
| Operating Temperature: 5 - 45 degrees C, relative humidity non-condensing. |
| Size/Weight: 13" x 10" x 4" (33 x 25 x 10 cm); less than 10 lbs (4.5 kg). |
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