ECOTEST DKG-21 - Page 67

65
2
0
2
0
0
2
)10(
)10(
)10()10(
1,1)10(








+








−
=
p
p
pp
p
H
H
HH
H


, (5.3)
where
tHH
pp
= )10()10(
00

- DE of УПГД-3Б equipment;
( )
( )
2
2
00
)10()10( tHH
pp
 +=

- main relative permissible error limit
of DE of УПГД-3Б equipment;
( )
( )
( )
t
ttt
t
дрс
222
1.1 ++
= 
- main relative permissible error limit
of DE exposure time measurement that should not exceed 5 %;
с
t
- permissible error limit of the stop-watch;
р
t
= 1 с - error caused by response of a user;
д
t
= 1 с - error caused by the process of placing the source into the
collimator.