. Aerographer's Mate 3 & 2. United States. Navy; Meteorology; Oceanography. Chapter 4-TEMPERATURE, HUMIDITY, AND PRECIPITATION. Figure 4-18. —Tipping bucket rain gage, with door open showing the two-compartment tipping bucket on its pivot. contact is established within the switch, causing an electrical impulse to be sent to the AN/ GMQ-14 recorder, thereby tripping a relay. Each time the signal is received, the rain- fall counter registers the inch of rain, and the rainfall recording pen at the right side of the recorder moves laterally one step. The pen has a range limit of f
. Aerographer's Mate 3 & 2. United States. Navy; Meteorology; Oceanography. Chapter 4-TEMPERATURE, HUMIDITY, AND PRECIPITATION. Figure 4-18. —Tipping bucket rain gage, with door open showing the two-compartment tipping bucket on its pivot. contact is established within the switch, causing an electrical impulse to be sent to the AN/ GMQ-14 recorder, thereby tripping a relay. Each time the signal is received, the rain- fall counter registers the inch of rain, and the rainfall recording pen at the right side of the recorder moves laterally one step. The pen has a range limit of five steps before reversing its direction of motion. The AN/GMQ-23( ) presents both a digital display and recorded trace of rainfall. The tipping motion switch closures provide pulses to be counted and stored in the rainfall sig- nal conditioner for each .01 inch of rainfall that occurs during the data frame (time period). The content of the counter is transferred to the display on command of the data transmitter. The contents are used to update the rainfall digital display and totalizer counter. The Analog Recorder RO-447/GMQ-29( ) (discussed earlier In chapter 3) is used to record the rainfall amounts. It is recorded on the right side mar- gin of the chart and as an event marker to the left for each inch of rain, with every tenth mark ( inch) reversing direction and recording a mark to the right. Maintenance Inspect the tipping bucket assembly and the measuring cylinder for corrosion or deteri- oration. Ensure that the bucket moves freely within the casting in which it is installed. When replacing the bucket, ensure that the magnet mounted on the tipping bucket is toward the mercury switch (away from the inspection, door). OCEANOGRAPHIC TEMPERATURE SENSORS Sparseness and inaccuracy of data are among greatest difficulties to be overcome in attempt- ing to prepare accurate oceanographic forecasts. To aid in obtaining this data, numerous pieces of equipment have been d
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