Digital Control Systems 300 Series Reference Manual

Co2 concentration sensors

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300 series

CO 2 Concentration Sensors

Reference Manual

DIGITAL CONTROL SYSTEMS

7401 SW Capitol Hwy.

Portland, OR 97219 USA

503/246-8110 ♦ 503/246-6747 (fax)

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Summary of Contents for Digital Control Systems 300 Series

Page 1 R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 300 series CO 2 Concentration Sensors Reference Manual DIGITAL CONTROL SYSTEMS 7401 SW Capitol Hwy. Portland, OR 97219 USA 503/246-8110 ♦ 503/246-6747 (fax) © 1999 AR自动化 http://www.sensor-ic.com/ TEL: 0755-83376489 FAX:0755-83376182 E-MAIL: szss20@16...
Page 2 R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 Date 7/12/00 8/1/00 3/11/05 AR自动化 http://www.sensor-ic.com/ TEL: 0755-83376489 FAX:0755-83376182 E-MAIL: szss20@16...
Page 3: Table Of Contents
R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 300 Series CO 2 Concentration Sensor TABLE of CONTENTS SCOPE ______________________________________ 1 INTRODUCTION _____________________________ 1 SPECIFICATIONS ____________________________ 2 OPERATIONAL DESCRIPTION _________________ 2 Operating Power Requirements _____________________ 2 Analog Measurement Output _______________________ 3 Voltage Output _______________________________________3...
Page 4: Scope
4 to 20 milliamp current loop interface, or directly displayed with the optional LED read-out. Several versions of the 300 series are available with full scale ranges from 2000 ppm to 100% CO .
Page 5: Specifications
3 or 4 digit LED OPERATIONAL DESCRIPTION The 300 series CO 2 sensors consist of a control board and a detector assembly connected with a flat ribbon cable. The sensor/control board pairs are factory calibrated as a unit and should not be separated.
Page 6: Analog Measurement Output
Measurement Calibration section starting on page 11. Voltage Output The 300 series CO 2 sensors indicate the CO 2 concentration measured by the detector as a DC voltage at the "V OUT" (positive) and "COM" terminals of J50. The standard output voltage range is from 0 to 1.0 volts as CO 2 concentration ranges from zero to full scale.
Page 7: Full Scale Turn-Down
The analog output scaling is changed so that the selected maximum concentration value corresponds to the full scale analog output. For example, a 300 series factory calibrated for 0 to 20% that is turned down to 10% full scale can never indicate more than 10% CO...
Page 8: Options
R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 300 Series CO 2 Concentration Sensor 5) Remove the shorting block from JP3 and store it by sliding over only a single pin of JP3. Remove the shorting block from JP4 and replace it at its original position over one or both pins of jumper JP5.
Page 9: Digital Display
R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 300 Series CO 2 Concentration Sensor Digital Display Figure 2: Optional Display Dimensions The CO 2 concentration can be directly displayed on an optional three digit LED display. The display cable is connected to the 5 pin locking header marked "DISPLAY"...
Page 10: Detector Mounting
R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 300 Series CO 2 Concentration Sensor Detector Mounting The remote and attached detector versions differ only in the mechanical configuration of the electronics module. Detectors should be placed so that they are not subject to excessive vibration or shock which could MODEL 1.6"...
Page 11: Control Board Mounting
R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 300 Series CO 2 Concentration Sensor Considerations To avoid excessive pressure build-up in the detector, place filters or other flow restricting devices upstream of the sample cell. Place the detector in the high pressure side of the system, so that any leaks discharge sample gas rather than drawing in ambient air and altering the concentration of the sample stream.
Page 12: Cable Connections
300 Series CO 2 Concentration Sensor Figure 5: Control Board Layout Cable Connections All power and signal connections to the 300 series are summarized in Table 1 below. For best noise immunity, the signal output wires should be twisted together and not routed for long distances close to power carrying conductors.
Page 13 R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 300 Series CO 2 Concentration Sensor Terminal Contact Signal Description Comments Number Name none The detector Detector assembly should assembly ribbon not be connected while the cable is connected control board is under here. power.
Page 14: Display Board Mounting
Measurement calibration is used to make the 300 series accurately report the CO concentration at the prevailing temperature and pressure.
Page 15: Analog Output Scaling Correction
ANALOG OUTPUT SCALING CORRECTION The analog voltage or current output generated by the 300 series in response to the detected CO2 concentration can be adjusted to match the input characteristics of the indicating device. Both the gain and offset of the analog output can be adjusted with the following procedures.
Page 16: Analog Output Span Adjustment Check
R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 300 Series CO 2 Concentration Sensor connected register correctly at the low end of the scale. This check can be made regardless of the CO concentration at the detector. To adjust the analog output zero calibration proceed as follows.
Page 17 R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 300 Series CO 2 Concentration Sensor 3) Use the 'UP' and 'DOWN' buttons to adjust the output as shown in the table below. Output Span Cal. Value 4 - 20 mA 19.20 mA Voltage 0.950 Volts...
Page 18: Limited Warranty And Remedies
300 Series CO 2 Concentration Sensor Limited Warranty and Remedies. DCS warrants to Buyer of the 300 series that for 2 years from the date of shipment of Products to the Buyer that Products will substantially conform with the product specifications agreed to by DCS. This warranty is not transferable.
Page 19 R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 300 Series CO 2 Concentration Sensor nonconformity. Any actions for breach of this warranty must be brought within six months of the expiration of this warranty. If DCS determines that a returned Product does not conform to the warranty in this section, it will either repair or replace that Product, at DCS’...
Page 20 R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 AR自动化 http://www.sensor-ic.com/ TEL: 0755-83376489 FAX:0755-83376182 E-MAIL: szss20@16...
Page 21 R传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182E-MAIL: szss20@1 AR自动化 http://www.sensor-ic.com/ TEL: 0755-83376489 FAX:0755-83376182 E-MAIL: szss20@16...