Gas sampling - Dilution units - Dilution gas sample probes, dilute the gas directly at the sample point, dilution ratio 500:1 down to 10:1 - M&C TechGroup Germany - #1

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M&C | TechGroup Germany GmbH Rehhecke 79, D-40885 Ratingen info@mc-techgroup.com www.mc-techgroup.com Fon +49 (0)2102 935-0 Fax +49 (0)2102 935-111 2-1.1.7 07.97/06.06 Application The electrically heated M&C dilution probe is applicable for such processes, where the measuring procedure or the handling of the process gas require the dilution of the sample respectively the component to be measured. Typical applications are the use with toxic gases, the moisture measurement and the emission measurement in flue gases. The M&C dilution probe SP2000H/DIL... is based on the well tested M&C gas sample probe SP2000H. This enables the user to adapt the probe to nearly every application, using for example special filter techniques or special materials. Description The dilution unit including the critical orifice is integrated in the probe outlet, heated up with the probe to a stable temperature. The incorporated pre-heater heats up the dilution gas to the probe temperature. Both steps avoid that sample gas decreases under the dewpoint. Calibration gas enters the probe via an integrated connection. The probe can be heated up to 180 °C or 320 °C. As an option a heated manual operated 2 way ball valve is available. It is integrated in the sample gas inlet and shuts off the probe head from the process, for example during the change of the filter element. The necessary dilution gas pressure can be adjusted by the precision pressure controller with pressure gauge. A vacuum pressure gauge indicates the function of the dilution system. The pressure controller and pressure gauges, necessary for the dilution function, have to be ordered separately. Set -A can be directly mounted to the probe. The external control unit -S is equipped with an additional shutoff ball valve and a flowmeter to adjust the test gas quantity. The sets -A1 respectively -S1 include an additional pressure controller for the option bypass injector -B or -BR. Gas Sample Probe Series SP® Version SP2000H/DIL... and SP2000H320/DIL... Gas Sample Dilution Probe Special Features Based on probe SP2000H/.... Electrically heated up to 180 °C or 320 °C External critical orifice is heated Including a dilution gas pre heater No dew point problems Dilution ratios from 10:1 up to 500:1 With check gas connection Independent of the process temperature Easy operation and maintenance The dilution probe realises dilution rates in a range of 10:1 to 500:1. A high dilution rate causes a low sample flow from the process. With underpressure conditions the response time can be minimised using the optional heated bypass injector -B which is integrated directly upstream the dilution unit. It is available with recirculation into the process -BR as well. With overpressure a bypass needle valve -BV controls the bypass flow. The construction of the probe guarantees an operation which is independent from the process temperature and is easy to maintain as well. SP2000-H/DIL