YSI 5000 - Page 54

51
Calculation
Type Description Calculation Error (mg/L)
1a instrument accuracy (±0.001 x 7.26) + 0.01 ±0.017
2a probe background ±0.01 x (1- (8.24/9.09)) x 7.26 ±0.007
2b probe nonlinearity ±0.003 x 7.26 ±0.021
2c temp. compensation ±(24-20) x 0.002 x 7.26 ±0.058
3a temp. uncertainty ±0.01 x 7.26 ±0.073
3b pressure ±0.012 x 7.26 ±0.087
Probable error can be determined by an r.m.s. calculation:
r.m.s. error = [.017
2
+ .007
2
+ .021
2
+ .058
2
+ .073
2
+ .087
2
]
1/2
= ±0.13 mg/L