Technical Data - wtw pH 540 GLP Handbuch

Technical data

Parameters
pH
Voltage
Temperatur
Drift control AR
Temperature
compensation
Setting range
Temperature
pH calibration
Calibration procedures
2 up to 5 point
calibration
AutoCal
AutoCal Var
1 or 2 point
calibration
ConCal
Data storage
BA11101/05.00/Pla/pH540GLP-4
Technical data
range: - 2.00 ... 16.00
resolution:
accuracy:
range: - 2.000 ... 16.000
resolution:
accuracy:
range: - 1250 mV ... +1250 mV
resolution:
± 1 mV ± 1 digit with operation temperature 15°C ... 35°C
accuracy:
range: - 5°C ... 99.9°C
resolution:
accuracy (instrument):
± 0.1 K ± 1 digit with operation temperature 15°C ... 35°C
with NTC 30:
± 0.1 K ± 1 digit with operation temperature 15°C ... 35°C
with Pt 1000:
reproducibility and minimum response time depend on the standard deviation σ σ (see
chart: "pH measuring according to DIN 19268: Calibration and measuring conditions")
compensation of the electrode slope
-20°C ... 130°C
± 30 mV
offset voltage:
("asymmetry")
slope: -50.0 mV/pH ... -62.0 mV/pH
standard buffer solutions according to DIN 19266:
solutions: A, C, D, F, G
WTW solutions: PL2, PL4, PL7, PL9, PL12
selection of max. 5 out of 30 stored data records of technical buffer solutions:
e. g. WTW technical buffer solutions: TPL2, TPL4, TPL7, TPL10
(pre-set in the ex-works condition)
any standard solutions
for 2 point calibration: 1
ring store
stored parameters: pH, mV, temperature, date, time, standard deviation
Number of stored values: 100 sets
Data readout to display, computer or printer
0.01
± 0.01 ± 1 digit at operation temperature 15°C ... 35°C
0.001
± 0.003 ± 1 digit in the pH range
± 0.006 ± 1 digit in the pH range
with operation temperature 15°C ... 35°C
1 mV
0.1 K
st buffer solution = neutral buffer
4.000 ... 10.000
-2.000 ... 4.000 and
10.000 ... 16.000
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