Technical Data; Measuring Properties; Measuring Principle - Tintometer Lovibond SD 305 pH/ORP Manual De Instrucciones

11 Technical data

11.1 Measuring properties

Measuring
Potentiometric determination of pH/ORP
principle
Sensor pH electrode
Display range -2 to 16 pH
Resolution
0.001 pH
Accuracy ± 0.005 pH
pH calibrat-
Automatic
ion
(1- to 3-point
Manual
calibration)
Quality Real-time
assurance
Data logger
Condition of
pH sensor
Other func- • Min/Max value memory
tions • Automatic temperature compensation (atc)
• Automatic instrument shut-down
• Status display of battery and sensor
• Battery change display (bAt)
• Alarm function (visual or with sound)
• Auto-hold function
• Data logger
56
ORP electrode
± 2000 mV
0.1 mV
± 0.05% FS
• Lovibond
• DIN 19266 (pH: 1.68 / 4.01 / 6.87 / 9.18 / 12.45)
• Individual pH buffer solutions (value entry)
• Assignment of logger and calibration data
clock
• Cyclical: 10,000 records
• By button press: 1,000 records
• 16 memory slots for calibration data with time stamp
GLP
• Configurable calibration reminder (1 to 365 days)
• Bar chart for pH sensor evaluation
• Update after every calibration
standard buffer (pH: 4.01 / 7.00 / 10.01)
®
SD_305_pH/ORP_1 04/2021
Temperature sensor
-5 to +150°C
0.1°C
± 0.2°C