Couplings and Guards

Unless otherwise specified, couplings and guards between drivers and driven equipment shall be supphed by the vendor. 

Figure 12-150. This standard arrangement 8 cast iron (C.l.) E blower, with motor and coupling factory mounted, is fitted with optional flanged inlet and outlet and coupling guard. (Used by permission Bui. FI-411C (11/90), 1988. The Howden Fan Co.)...

Fogli et al. developed and validated an HPLC method with fluorescence detection for simultaneous routine TDM of anthracyclines and their metabolites.27 They coupled a Waters LC Module I Plus system equipped with a WISP 416 autosampler with a Model 474 scanning fluorescence spectrophotometer. The stationary phase was a Supelcosil LC-CN column (250 x 4.6 mm, 5 /um particle size) with a /iBondapak-CN guard column. The mobile phase consisted of 50mM monobasic sodium phosphate buffer and acetonitrile (65 35 v/v), adjusted to pH 4.0 with phosphoric acid. The flow rate was 1 mL/min. The fluorescence detection was set at excitation wavelengths of 233, 254, and 480 nm and at an emission wavelength of 560 nm. 

Two days later I woke up in the hospital bed with all kinds of tubes and machines plugged into me and a couple of armed guards at the door. I seemed to be in one piece but I was not exactly sure at that moment. 

Removable coupling guards shall be furnished and shall be in accordance with requirements of applicable national, industrial, or statutory bodies. 

Shaft coupling assembly drawing and bill of materials including allowable misalignment tolerances and the style of the coupling guard. ... 

In addition to the commercially available systems, several authors have described laboratory-built systems using commercially available components from companies such as Upchurch Scientific (Oak Harbor, WA). One of the first reported laboratory-built micro-bore HPLC systems was described by Simpson and Brown, which was a simple adaptation of a standard HPLC system to accept micro-bore columns built from guard columns. A complete system has been described based on dual microdialysis syringe pumps (CMA Microdialysis, Chelmsford, M A) or dual syringe pumps (Harvard Apparatus, Inc., Holliston, MA), a microinjection port, and a micro-column the latter components being obtained from Upchurch scientific (Figure 3.5). This system was coupled with a laser-induced fluorescence (LIF) detector and used to measure neuropeptides in sub-microliter samples. A further modification of this system was built to perform immunoaffinity isolations of biomedically important analytes from clinical samples. ... 

Each coupling shall have a coupling guard which is removable without disturbing the coupled elements and shall meet the following requirements ... 

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