AEROGRAPHER'S MATE 3 & 2 



■500 FT. 



PROJECTOR 





b 1 





3 

 ' 







INDICATOR 



Figure 5-16. — Typical installation of Transmissometer AN/GMQ-10( ). 



209.134 



CHART INSTALLATION. — Figure 5-17 

 shows the recorder with its component parts 

 identified, and figure 5-18 illustrates the proper 

 method of installing the chart. 



WRITING SYSTEM. — The pen mechanisms 

 of the recorder have been properly adjusted and 

 under normal conditions should not need re- 

 adjustment. 



To ink the system, lift out the inkwell 

 by lifting the two handles and pulling the 

 inkwell forward. Fill the inkwell about three- 

 fourths full through the pen opening, using 

 the inkwell filler and the ink furnished with 

 the equipment. Use ink ONLY of the type 

 furnished. Do not use standard writing ink 

 or ink intended for use with other types of 

 recording mechanisms. These may clog the 

 pens. Replace the inkwell, being careful that 

 it is under the spring clips which hold it in 

 place. Do not spill ink on the instrument. Re- 

 move any spilled ink with a rag or blotter 

 immediately. If ink is spilled on clothing, 

 wash it out as soon as possible, using warm 

 water and soap. 



Set the pen element on the pen fork properly, 

 with the knife edges of the element seated in 

 the slots in the fork. Fill the pen by use of 

 the pen filler furnished with the equipment as 

 follows: Compress the bulb of the pen filler; 

 insert the glass pen tip into the hole in the 

 rubber tip of the filler; let the filler suck ink up 

 into the pen until no air bubbles can be seen; 

 and remove the pen element from the filler. 

 Use a blotter between the pen and chart to 

 protect the chart. 



Check the balance of the pen by tapping 

 lightly on the chart near the pen. (The pen 

 was properly balanced before shipment.) The 

 pen should bounce up and down on the chart 

 when properly balanced. If the pen pressure is 

 too great, the pen will tend to drag toward the 

 center of the chart, write a heavy line, and slow 

 the response speed of the instrument. If the 

 pressure is too light the pen will write inter- 

 mittently. The balance of the pen is determined 

 by the position of the pen counterbalance threaded 

 on the back of the pen. No effort should be 

 made to balance the pen unless it is properly 

 filled with ink. 



94 



