Coulometric Karl Fischer Titrator LWT-A31

Coulometric Karl Fischer Titrator LWT-A31 is a benchtop unit with 5 to 40°C ambient temperature range, 3 µg to 9999.9 µg measurement range, and offers 400 mA maximum current. Excellent low-power operation makes it possible to compact battery, enables portable function criterion for measuring electrode signal for the electrolysis end. It stability and accuracy are key factors affecting the measurement accuracy. Designed with streamline and 5 inch coloured touch screen with standard testing method used ASTMD4928, ASTMD1533 and ASTMD6304 in titration process.

Maximum current 400 mA
Measurement range 3 µg to 9999.9 µg
Resolution 0.1 µg
Precision 1 ± 2 µg (3µg H<sub>2</sub>O to 20µg H<sub>2</sub>O)
Precision 2 ± 3 µg (20µg H<sub>2</sub>O to 100µg H<sub>2</sub>O)
Precision 3 ≤ 5 % (100µg H<sub>2</sub>O to 10mg H<sub>2</sub>O)
Data saving 496 pcs
Built-in printer Thermal printer
Calculation formula 8 kinds can be selected
Ambient temperature 5 to 40°C
Dimension 400 × 260 × 180 mm
Power consumption 50 W
Power Supply AC 220 V±10%, 50Hz ±5 %
Net weight 5 kg
  • Design with streamline and 5 inch coloured touch screen
  • Electrolytic process is intelligently control completely
  • It adopts real-time dynamic impedance method to detect the end point of titration
  • Equipped with open-circuit fault, short-circuit fault and measuring electrode
  • High-precision, and it has automatic detection function
  • Inbuilt thermal printer and end point is settable

Coulometric Karl Fischer Titrator is widely used to determine the trace water content in liquid petroleum, chemical engineering, pharmacy, electricity, scientific research and education department.

Ambient Temperature Range ≤ 35°C
Relative Humidity ≤ 85%
Heating Mantle Cap Power 1000 W × 2
Sample Determination 2 at a time
Ambient Temperature Range ≤ 35°C
Relative Humidity ≤ 85%
Heating Mantle Cap Power 1000 W
Sample Determination 1 at a time
Ambient Temperature 10°C to 35°C
Measurement Range 0 to 100 mg
Resolution 0.1 µg
Max. Electrolysis Speed 40 µg /s
Ambient Temperature Range -10 to 35°C
Relative Humidity ≤85%
Distillation Flask 1000 ml
Receiver 5 ml, with 0.05 ml graduation
Samples 2
Oil bath cubage 30 L
Angle between bomb and water surface 30 °
Speed of rotary assembly 100 ± 5 RPM
Samples 6
Temperature controlling mode Automatic digital temperature
Temperature controlling range Room temperature ~ 160 °C
Temperature controlling accuracy ± 0.2 °C
Samples 8
Temperature 100 ℃
Temperature controlling accuracy 0.1 ℃
Flow meter 3 ± 0.3 L / H oxygen
Capacity 2.0 kVA
Speed of voltage increase 2 k V/ s
Voltage inspection accuracy 0.01
Breakdown sensitivity < 0.1 kV
Ambient temperature (-10) °C ~ 35 °C
Relative humidity ≤ 85 %
Capillary viscometer 11 pieces
Stirring motor 6 W, 1200 rpm
Ambient temperature (-10) °C ~ 35 °C
Relative humidity ≤ 85 %
Capillary viscometer 7 pieces of Cannon-Fenske reserve-flow capillary viscometer tubes in a group
Stirring motor 6 W, 1200 rpm
Ambient temperature (-10) °C ~ 35 °C
Relative humidity ≤ 85 %
Capillary viscometer 11 pieces
Stirring motor 6 W, 1200 rpm
Calorimeter type Isoperibol
Oxygen filling Fully automatic oxygen filling & releasing, fully automatic bomb raising & lowering
Bomb volume 250 ml
Analysis time < 8 min full test process: <10 min
Calorimeter type Isoperibol
Temperature range 5 to 40°C
Measurement range 5 to 40 MJ/ kg
Operation Mode The outer barrel temperature is constant
Calorimeter type Isoperibol
Temperature range 5 to 40°C
Measurement range 5 to 40 MJ/ kg
Operation Mode A. Outer barrel temperature follows room temperature change mode Or B. Outer barrel temperature constant mode
Ambient Temperature Range ≤ 35°C
Relative Humidity ≤ 85%
Heating Mantle Cap Power 1000 W
Sample Determination 1 at a time
Ambient Temperature Range ≤ 35°C
Relative Humidity ≤ 85%
Heating Mantle Cap Power 1000 W × 2
Sample Determination 2 at a time
Ambient Temperature 10°C to 35°C
Measurement Range 0 to 100 mg
Resolution 0.1 µg
Max. Electrolysis Speed 40 µg /s