7.1 Technical specifications
756/831 KF Coulometer, Instructions of Use
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7 Appendix
7.1 Technical specifications
Modes KFC: Coulometric KF titration
KFC-B: Coulometric KF titration with blank deduction
BLANK: Blank determination
GLP: Validation of the Coulometer
Endpoint indication Voltametric, AC indication
Ipol: 2, 5, 10, 20 or 30 uA adjustable
Iodine production Pulse with variable current strength and length
Current at the generator electrode: 100, 200, 400 mA
Titration speed max. 2.24 mg H
2
O/min
Determination range 10 ug to 200 mg H
2
O
Resolution 0.1 ug H
2
O
Reproducibility Sample: Reagent manufacturer's standard.
With 10 ug...1000 ug H
2
O: ± 3 ug
With >1000 ug H
2
O: 0.3% or better
Drift compensation automatic, manual or none
Materials
Housing Metal, powder coated
Keypad cover Polycarbonate (PC)
Display Graphical LCD, 192 x 64 dots
Field: 100 x 37 mm
LED back-lit
Printer (only at 756) Built-in thermal printer
Paper width 57 mm
144 pixel or 24 characters per line
Memory Method storage for approx. 100 methods
Silo memory for sample data and results
Stirrer control On/off switch manual and coordinated with the titration
process
RS232 interface 2 separate interfaces, each can be configured
for printer, balance or computer connection: Completely
controllable from external control unit
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