MediaWiki API result

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            "481": {
                "pageid": 481,
                "ns": 0,
                "title": "Recorder Comparative Specification \u2013 Comparing the Specifications of Various eDAQ Data Recording Hardware Units",
                "revisions": [
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                        "*": "The spreadsheet you can download below compares the specifications of various eDAQ hardware units that can be used to record data.\n\n[[File:Recorder Comparative Specification.xlsx]] (14 KB .xlsx)\n\nThis includes the:\n* [https://www.edaq.com/ED410 e-corder 410]\n* [https://www.edaq.com/ED821 e-corder 821]\n* [https://www.edaq.com/ED1621 e-corder 1621]\n* [http://www.edaq.com/ER466 ER466 Integrated Potentiostat]\n* [http://www.edaq.com/powerchrom-system ER280 PowerChrom System]\n* [https://www.edaq.com/ER181C One channel Mini-corder]\n* [https://www.edaq.com/ER180C Two channel Mini-corder]\n* [https://www.edaq.com/ER825 Multi-Channel Contactless Conductivity Detector]"
                    }
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            "244": {
                "pageid": 244,
                "ns": 0,
                "title": "Recording from Figaro Gas Sensors",
                "revisions": [
                    {
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                        "*": "[[File:Figure 1. The Chart software gives a continuous live display of the gas concentration.jpg|300px|thumb|right|Figure 1. The Chart software gives a continuous live display of the gas concentration]]\n''The e-corder can be connected to a Figaro sensor to record gas concentration.''\n\n=== Introduction ===\n[http://www.figarosensor.com Figaro Engineering] manufacture a range of sensors for measuring different gasses. The e-corder can provide the 5 V required to power the sensor and measure the signal produced. The Chart software is used to calibrate and monitor the signal. The gas concentration is displayed in real time as in Figure 1.\n\n=== Equipment Required ===\nThe following equipment is required:\n* Computer installed with [http://www.edaq.com/Chart Chart software]\n* [http://www.edaq.com/e-corder-units e-corder] unit\n* Gas sensor cable, available from eDAQ\n* A gas sensor from [http://www.figarosensor.com Figaro Engineering]\n\n=== Experimental Setup ===\nThe sensing element inside the Figaro sensor is comprised of a metal oxide semiconductor layer formed on an alumina substrate of a sensing chip together with an integrated heater. In the presence of a detectable gas, the sensor's conductivity increases depending on the gas concentration in the air.  The gas sensor cable from eDAQ can convert the change in conductivity to an output signal which corresponds to the gas concentration. This signal is record by the e-corder.\n\nThe sensor requires two voltage inputs, which are supplied by the e-corder: the heater voltage and the circuit voltage.  The heater voltage is applied to the integrated heater in order to maintain the sensing element at a specific temperature which is optimal for sensing.  Circuit voltage is applied to allow measurement of voltage across a load resistor which is connected in series with the sensor.\n\nThe Arithmetic calculation function in the Chart software is used convert measured voltage to sensor resistance. For example, for the TGS 2620 ethanol sensor, Equation 1 is used. When the ambient temperature and humidity is taken into account, the Sensor resistance can be converted to the concentration of the gas.\n\n         <math>R_s = \\tfrac{V_C - V_{RL}}{V_{RL}} \\times R_L</math>          Equation 1.\n\nwhere sensor resistance (R<sub>s</sub>), circuit voltage (V<sub>C</sub>), measured voltage (V<sub>RL</sub>) and load resistor (R<sub>L</sub>)\n\n[[File:Figure 2. The ethanol in the flask is heated by the hotplate. The ethanol vapour travels through the tubing to the Figaro TGS 2620 sensor.jpg|600px|thumb|left|Figure 2. The ethanol in the flask is heated by the hotplate. The ethanol vapour travels through the tubing to the Figaro TGS 2620 sensor]]"
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