Yokogawa EXAxt PH450 4-Wire Analyzer for pH and ORP - Manual (Page 35)

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IM 12B07C05-01E
5
MENU
STRUCTURE
COMMISSIONING
Menu Parameter Default Range
values min. max.
Limits and timing Zero high 120 mV 0 mV 532.4 mV
(relative to I.T.P.) 2.03 pH 0 pH 9 pH
Limits and timing. Zero low -120 mV -532.4 mV 0 mV
(relative to I.T.P.) -2.03 pH 9 pH 0 pH
Limits and timing Slope high 110% 100% 110%
Limits and timing Slope low 70% 70% 100%
Limits and timing Stabilization time 5 sec. 2 sec. 30 sec.
Limits and timing Calib. interval 250 days 1 day 250 days
Buffers Buffer table 1, 2, 3 NIST/DIN 19266 See appendix 1
Zero/Slope/ITP Zero 0 mV Zero low Zero high
7 pH Zero low Zero high
Zero/Slope/ITP Slope 100% Slope low Slope high
59.16 mV/pH Slope low Slope high
Zero/Slope/ITP ITP 7 pH 0 pH 14 pH
Input 1(or 2) Impedance High limit 200000 Ω 1000 Ω 1000000 Ω
Input 1(or 2) Impedance Low limit 1000 Ω 1000 Ω 1000000 Ω