BAIRD &TATLOCK (LONDON) LTD. 



5644 



5644 s Junker's Calorimeter, for determining the calorific power of combustible gases, fitted 

 in travelling case with fittings, with directions 



Meter for above 

 Governor 

 Measure ,, 



Price, complete as illustrated 



The Junker's patent calorimeter has been in use for a large number of years in all the principal gas works in 

 this country and abroad, and is largely used by professors in technical colleges for demonstrative work, thus 

 proving its value. 



Combined with the usefulness of this instrument, one of the most important points is its simplicity. The 

 apparatus is set up as shown in Figure herewith, and an unskilled operator can simultaneously observe thermometers, 

 the index of the gas meter, and the measuring glasses at one time. The principle on which the apparatus acts 

 is that the heat generated by a flame is transmitted to a current of water flowing at a constant rate, and measure- 

 ments are taken 



1. Of the quantity of gas burned. 



2. Of the quantity of water passing through the apparatus. 



3. The difference in temperature of the water on entering and leaving the apparatus. 



The water inlet is connected to the nipple a to the centre of the upper container. This water must be kept 

 continually flowing, and is therefore arranged accordingly so that continuous readings may be taken. After 

 this water has passed through the calorimeter, it leaves the nipple c, and is gathered in a glass measure. 



In order to collect any condensed water which may take place inside the calorimeter, a drain a.td is provided. 



The calorimeter should be filled with water by opening the diaphragm e, and when the calorimeter is filled it 

 will be observed to discharge at c. With the thermometers then in position the apparatus is ready for taking tests. 



Full description and method of working sent with each apparatus. 





23 10 



3 10 



4 15 



15 



32 10 



CROSS STREET 



HATTCTNT GARDEN E-C 



1016 



