Analyzer O 2/H2 The CIRAS-SC is a single channel, Features absolute CO2/H2O infrared gas • analyzer for measurement of a single High precision, non-dispersive infrared gas analyzers for CO2 CIRAS-SC gas stream. It requires 12V DC power and designed to be controlled and H2O and operated by a remote computer. • CO2 Range: 0-2,000 ppm (up to 9,999 ppm) Applications • Fast response • Plant/Crop physiology • Analog & digital (RS232) linear • Atmosphere & pollution CO2 output monitoring • Excellent stability achieved by • CO2 enrichment studies built-in auto-zero facility • Animal/insect physiology • Fully compensated for changes in • Industrial process control temperature, pressure and gas interactions • Built-in sampling pump with mass flow controllers • Insensitive to vibration, no moving parts ensuring high reliability Single Channel CO • Internal & external logging Data Sheet Technical Specifications Analysis Method RS232 Output Non-dispersive infrared, configured as an Stored/current data output in standard ASCII absolute absorptiometer with microprocessor format at 1200 baud. control of linearization. Analyzer Control The analyzers simultaneously measure All analyzer functions/controls are controlled Absolute CO2 and humidity of the sample gas by the PC (software supplied). For Further Information, Please The CIRAS-SC has 2 analyzers for absolute Real Time Clock Contact Us At: measurement. Accuracy: Better than 1 min/month at 25o C. Operating Temperature: 0-70o C. North America Measurement Range CO2: 0-2,000 µmol mol-1 (Optimal Range) Recording Options PP Systems By PC or by the instrument. Automatic 0-9,999 µmol mol-1 (Max. Range) logging at user selectable intervals between 110 Haverhill Rd., Suite 301 H2O: 0-75 mb 10 seconds and 1 hour, controlled by internal Amesbury, MA 01913 U.S.A. real-time clock. Corrections are made for temperature, pressure and foreign gas broadening. Tel: +1 978-834-0505 Data Storage Internal battery backed RAM, stores up to Fax: +1 978-834-0545 Precision (Absolute) 1,640 records. Memory is maintained during CO2: 0.2 µmol mol-1 at 300 ppm battery change. Europe 0.5 µmol mol-1 at 1,750 ppm Instrument Status Dectection 3.0 µmol mol-1 at 9,999 ppm Indication of instrument malfunction, including PP Systems low battery voltage (< 10.5V) through the Unit 2, Glovers Court H2O: 0.015 mb at 0 mb RS232 output. Auto restart if momentary Bury Mead Rd. 0.020 mb at 10 mb failure. Hitchin, Herts SG5 1RT UK 0.030 mb at 50 mb Power Supply Linearity External 12V DC power supply with small Tel: +44 1462-453411 Better than 1.0% throughout the range, with ripple. Input voltage must not exceed 15V. An Fax: +44 1462-431090 calibration at 2,000 ppm CO optional internal 12V battery can be supplied 2 or 40 mb. giving up to 2 hours continuous use. Email: sales@ppsystems.com Stability (CO2 Analysis) Power Consumption Automatic Zero at regular intervals, corrects 12.0 W (initial warm-up) URL: www.ppsystems.com for sample cell contamination, source and 3.5 W (normal operation) detector ageing and pre-amplifier gain changes. Operating Environment 0-45o C, non-condensing. In dirty environ-Response Time ments, external air filtration is required. Electrical: 0.5 seconds Display/Analog Output: 1.6 seconds Housing Pneumatic: < 5 seconds Powder coated, 1.5mm thick aluminum enclosure. An optional, lightweight version is Air Sampling available with a 1mm thick housing. 100 cm3 min-1 using an integral DC pump. Both analysis and reference pumps fitted with Dimensions mass flow controllers. The analyzer may be 280mm W x 205 mm D x 100mm H used in open and closed systems. Weight Environmental Sensor Inputs 2.5 kg. (Standard Unit) 3 input channels are available. There is 1.8 kg. (Optional, lightweight version) integral conditioning of PP Systems’ (Optional, internal battery adds 0.6 kg. to the environmental sensors (%RH, Temperature, weight if used). PAR, etc.). 04/04/05 Analog Output (CO2/H2O) 8 bit D/A converter giving 0.5% resolution. PP Systems is continuously updating its Output voltage 0-5V. Both minimum and products and reserves the right to amend maximum voltage are defined by user. product specifications without notice.