![]() ![]() ![]() Microphone preamplifier signal conditioning.The following features of the 426A12 are available when used with the Model 820, 824, or 870 SLM: What 426A12 features are available when used with the Model 820, 824, or 870 SLM? The 426A12-NPT adapter pipe coupler is available to convert the 1.5” NPT to the required ISO 228-1 G 1.5” thread, allowing the mounting of the 426A12 to the original pole. The PRM2100K and PRM2101K both use a 1.5”-11.5 NPT mounting thread, whereas the 426A12 uses an ISO 228-1 G 1.5” mounting thread. Will the 426A12 mount directly to an existing pole that previously had a PRM2100K or PRM2101K mounted to it? Block diagram of interconnectionsĤ An optional adapter cable, S2175.03, is available to connect the CBL197 control cable to a Larson Davis outdoor monitoring system that has a power and ground block system (see Figure 1 for additional information). Custom lengths are also available.ģ If 426A12 is directly replacing a PRM2100K or PRM2101K a 426A12-NPT adaptor pipe coupler will be required.įigure 1. Using CBL078 or CBL092 short extension cable makes the connections possible and also allows fit inside NMS box.Ģ Cable has default length of 20 feet. Additional Equipment Required for Connection to 426A12ġ Connecting additional preamp and ADP006 directly into SLM signal connector may be too tall for NMS box. See Figure 1 and Table 2 for additional information on the connections. ![]() To correctly interface these SLM’s to the 426A12 use the additional equipment listed in Table 1. The 426A12 can output signals that could potentially damage the input circuitry of the 820, 824 or 870 sound level meter. Occupational Noise Evaluation & Industrial Hygiene.Portable Noise Monitoring with Sound Recording.Multi-Purpose Environmental Sound Level Meter. ![]()
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