YSI 5000 - Manual (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