RADIOMETER ABL800 FLEX - Page 32

ABL800 FLEX Reference Manual 1. Potentiometric measuring principles
Electrolyte electrodes, Continued
Status
(continued)
Ca electrode
(Cal1)C
nom)(Cal1,C01
Status(Ca)
2
22
30.75
Cal1)(Ca,ECal1)E(Ca,
0
+
+
−
×
=
ac
ac
mmol/L
Cl electrode
(Cal1)Cl
nom)(Cal1,Cl01
Status(Cl)
2
61.5-
Cal1)(Cl,ECal1)E(Cl,
0
−
−
−
×
=
c
c
mmol/L
The status limits of the electrolyte electrodes are as follows:
Electrode Status Limits
K 0.5 - 12 mmol/L
Na 10 - 250 mmol/L
Ca 0.1 - 20 mmol/L
Cl 30 - 900 mmol/L
Drift
Drift equations are given below.
K electrode
)Cal1(K)prevCal1,(K101(K)Drift
++
prev)Sens(K,61.5
prev)Cal1,E(K,Cal1)E(K,
cc −×=
×
−
mmol/L
)(Cal2K)prevCal1,(K102(K)Drift
+
prev)Sens(K,61.5
prev)Cal1,E(K,-Cal2)E(K,
cc
+
−×=
×
mmol/L
Na electrode
)Cal1(Na)prevCal1,(Na101(Na)Drift
++
prev)Sens(Na,61.5
prev)Cal1,E(Na,Cal1)E(Na,
cc −×=
×
−
mmol/L
)(Cal2Na)prevCal1,(Na102(Na)Drift
+
prev)Sens(Na,61.5
prev)Cal1,E(Na,-Cal2)E(Na,
cc
+
−×=
×
mmol/L
Ca electrode
)Cal1(Ca)prevCal1,(Ca101(Ca)Drift
+2+2
prev)Sens(Ca,75.03
prev)Cal1,E(Ca,Cal1)E(Ca,
cc −×=
×
−
mmol/L
)(Cal2Ca)prevCal1,(Ca102(Ca)Drift
+2
prev)Sens(Ca,75.03
prev)Cal1,E(Ca,-Cal2)E(Ca,
cc
+2
−×=
×
mmol/L
Continued on next page
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