1.1 Instrument Description

        The instrument of Huazheng Electric Coulometric Karl Fischer titrators is an used for Coulometric water determination according to Karl Fischer. The instrument is designed for usage as a titrator in analytical laboratories.Its main application field is volumetric titration.

       The present instrument is suitable for processing chemicals and flammable samples. The usage of  this titrators therefore requires that the user has basic knowledge and experience in the handling of toxic and caustic substances. Knowledge with respect to the application of the fire prevention measures prescribed for laboratories is also mandatory.

1.2 Safety Instructions

      Warning: This instrument may only be operated in accordance with the specifi-cations in this documentation.

      Warning: An incorrect mains voltage can damage the instrument.Only operate this intrument with a mains voltage specified for it (see rearpanel of the instrument).

      Warning:Never open the housing of the instrument. The instrument could be demaged by this. There is also a risk of serious injury if live components are touched.There are no parts inside the housing which can be serviced or replaced by the user.

II.Technical Specifications

2.1 Modes  

Coulometric KF titration with automatic blank deduction Endpoint indication Voltametric, AC indication Iodine production Pulse with variable current strength and length.

Current at the generator electrode: 100, 200, 400 mA

Titration speed max： 40 ugH2O/s

Determination range  0 to200 mgH2O

Resolution  0.1 ug H2O

Reproducibility Sample:  Reagent manufacturer's standard.With 10 ug...1000 ug H2O: ± 2 ug

With >1000 ug H2O: 0.2% or better

Drift compensation automatic

Display Graphical LCD, 240 x 128 dots, LED back-lit

Printer  Built-in thermal printer, Paper width 57 mm

Memory Data storage 500 results

Stirrer control coordinated with the titration process

RS232 interface computer connection

2.2 Ambient temperature

Nom. operation range  5 ... 40 °C

Storage – 20 ... 60 °C

Transport – 40 ... 60 °C

2.3 Mains connection

Voltage 220 V ± 10 %

Frequency 50 ... 60 Hz

Power consumption max. 30 W

2.4 Dimensions

Material of housing   Steel

Material of display    Glass(LCD)

Width   320 mm

Height  240 mm

Depth   150 mm

Weight  8 kg