User manual DHI MFTS ADAPTOR KIT FOR MOLBLOC-S PN 401832 INSTALLATION AND OPERATION

[. . . ] FTS Adaptor Kit for molbloc-STM P/N 401932 Installation and Operation Instructions This document describes the hardware setup and other recommendations for testing the orifice flow meters used for verification/calibration of flows into PM2. 5 particulate monitoring instruments. The Chinook Engineering Streamline flow transfer standard (FTS) is used by leaving the inlet to the orifice open to atmosphere and drawing the air flow through the device utilizing a downstream vacuum source (sub-atmospheric pressure). Carefully slide the Chinook Engineering FTS over the adaptor until the adaptor "bottoms out" inside the FTS. PARTS INCLUDED IN FTS ADAPTOR KIT SHIPMENT The following parts are included in the FTS adaptor kit shipment: P/N 401932 FTS Adaptor Kit DESCRIPTION QTY PART NO. HARDWARE REQUIRED · · · · molbloc-S elements: Designated 2E2-S and 5E1-S End flange conversion kit, 1/4 in. [. . . ] At its lowest volumetric flow rate of approximately 1 lpm, the inlet absolute pressure will be 20 kPaa. The regulating valve in the configuration described above is used to restrict the flow rate and thereby reduce the molbloc-S inlet pressure. As long as the vacuum source can maintain the molbloc-S outlet pressure to that of no greater than 0. 5x that of the inlet pressure, the FTS can be checked at multiple flow rates down to approximately 2 slm for the 200 sccm/kPaa, and 0. 5 slm for the 50 sccm/kPaa INSTALLATION OF FTS ONTO MOLSTIC-S 1. 5. Filter Double female VCR coupler Metering valve Remove and retain the VCR tube adaptor together with the double female VCR coupler from the filter element's inlet connection, located on the inlet of the molstic-S. Discard the VCR gasket, which is for one-time use. Place the included VCR soft o-ring into the groove inside of the FTS adaptor. Connect the FTS adaptor to the filter element's inlet connection. Refer to the VCR face seal usage instructions in the molbloc-S instruction sheet, document no. 560050, supplied with molbloc-S. REFERENCE FLOW MEASUREMENT In order for the molbox or COMPASS for molbox PC software to properly calculate volumetric flow rate, the prevailing conditions of ambient temperature, absolute pressure, and relative humidity of the air flowing into the FTS must be determined and entered. If the FTS has the associated instrumentation capable of measuring these values it should be used for this procedure. Typically, the ambient temperature, barometric pressure, and relative humidity of the laboratory in which the calibration takes place can be measured independently and used for this purpose. The gas temperature measurement made by the molbloc-S can be selected for use by either the molbox or by COMPASS in order to calculate the FTS flow rate. [. . . ] VCR is a registered trademark of the Swagelok Company. Document 560048 030527 DH Instruments, Inc. 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA Tel 602. 431. 9100 Fax 602. 431. 9559 dhi@dhinstruments. com www. dhinstruments. com [. . . ]