Specifications:
Accuracy and Resolution: At constant temperature, accuracy better than 0.2% of full scale, 1 - 100% oxygen, resolution 0.001%; Barometric pressure accuracy better than 0.1% of full scale, resolution 0.001 kPa; CO2 accuracy typically better than 1% of reading
Barometric Pressure Compensation (O2, CO2): Executed in floating-point math; eliminates drift caused by variations in barometric pressure
Digital Filtration: Adjustable from zero to 50 seconds for 0-63% of a step change, in 0.2 second increments
Flow Range: 20 - 2000 ml/minute, measured and/or controlled via linearized mass flow meter. Accuracy 2% of reading. Temperature and barometric pressure compensation to STP is not required
Four Analog Outputs: Oxygen 3 ranges (1 zero-suppressed); Barometric pressure 3 ranges (2 zero-suppressed); CO2 6 ranges; flow rate 7 ranges. Other outputs can be set via the menu system. 0-5V output with 16 bit resolution on all outputs
Internal Data Storage: 8100 data points (all parameters included), 0.1 - 600 sec interval, multiple recordings supported, non-volatile, uploadable to PC-compatible computer using included software
Noise and Drift: At constant temperature, flow rate and concentration- O2 noise < 0.004% pk-pk over 20 minutes; Drift < 0.03% over 24 hours. CO2 noise < 5 ppm pk-pk over 20 minutes, drift < 15 ppm over 24 hours
Operating Temperature: 5 - 45 degrees C, relative humidity non-condensing
Panel Display: Digital 4-line alphanumeric LCD, simultaneous display of oxygen (0.001 % or 0.001 kPa resolution), flow rate and barometric pressure (0.001 kPa resolution). CO2, if available, also displayed
Power Requirements:9 - 24VDC (12 VDC nominal), <0.5A. Universal (90-240 VAC) adapter supplied
Range: Oxygen- 0 - 100% (best accuracy above 1%); barometric pressure 30 - 110 kPa; CO2 (optional) 0 - 10%, 0 - 15% available to special order
Response time: O2- < 7 seconds for 10-90% of a step change at 200 ml/minute (can be substantially improved during data analysis), CO2- < 2 seconds for 10-90% of a step change
Serial Data Output: Comma delimited ASCII string of all measured parameters, standard RS-232 serial, baud rate 115200, polled or auto-sent at user definable intervals from 0.1 - 600 seconds
Size/Weight:13" x 10" x 4" (33 x 25 x 10 cm); less than 10 lbs (4.5 kg)
Technology: O2- Fuel cell, 18-36 month life, user-replaceable. CO2 (optional)- Dual-wavelength non-dispersive infrared
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
Two Accessory inputs: Configuranble for temperature (-5 - 60C, accuracy 0.2C, resolution 0.001C with optional thermistor probe) or voltage, 0-5V, 16 bit resolution.
User Interface: Intuitive menu system backed by nonvolatile memory of user settings Single-click spanning at default span settings
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