Power Plant Instruments 77 



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POWER PLANT INSTRUMENTS 



Figures 1 & 2 — Foxboro Recording and Indicat- 

 ing Thermometers for power plants. Used on feed- 

 water heaters, stacks, economizers, steam lines, ammonia 

 compressors, freezing tanks, condensers, forecoole'rs, 

 brine lines, brine tanks. 



Figures 3 & 4 — Foxboro Recording and Indicat- 

 ing Pressure Gauges for po.ver plants. For use on 

 boilers, steam lines, liquid lines and compressors. 



Figure 5 — Foxboro Two-Fen Recording Pres- 

 sure Gauges for recording compressor suction and dis- 

 charge pressures. Low pressure two-pen recorders are 

 used for recording draft at any two parts of the boiler 

 system. 



For dairies whose power requirements necessitate 

 plants of large capacity Foxboro-Heath COg Recorders 

 produce permanent records of the COj content in the 

 flue gases. Their use greatly increases the efficiency and 

 economy of plant operation. For large plants we 

 also recommend the use of Foxboro Triplex Draft 

 Gauges for indicating pit pressure, draft in the last 

 pass and in the furnace above the fire. Although tJiis in- 

 strument was only recently placed on the market its 

 accuracy, compactness and easy reading quality have 

 made it exceedingly popular with engineer and fireman. 



Write us for further information concerning these 

 instruments. 



