EH Systems, Capillary Electrophoresis, C4D-720 detector module

By: Eh Systems  09-12-2011
Keywords: Uv Absorption, Conductivity Detector, Detector Module,


C4D-720 capacitively coupled contactless conductivity detector module

The C4D-720 is a compact conductivity detector module. It is based on the simple principle. The AC voltage is not directly applied to the segment on the capillary, but coupled through two cylindrical capacitors. The resulting current is monitored and recorded. We take the current divided by the excitation voltage and get the conductivity. The main advantage of this detection method is the elimination of making any window on the capillary and very high sensitivity can be achieved for analyzing small ions which are rather difficult to be detected by UV absorption method.

C4D-720 Specifications

Exciter Voltage 0 - 200V p-p progammabe
Exciter Frequency 64 - 640 kHz progammabe
Noise level at empty cell (time constant 1 s) ±2x10-4 RCU
Drift at empty cell (constant room temperature, steady operation for 1/2 to 1 hrs) 2x10-3 RCU/hr
Capillary O.D. 365 µm
Capillary I.D. 100, 75, 50, 25, 10 µm
Time constant 10, 5, 2, 1, 0.5, 0.2, 0.1, 0.05, 0.04, 0.033, 0.02, 0.016, 0.01 sec.
Display 122x32 Graphic LCD
Output 1V/AU at scale = 1
Output scale 2, 1, 0.5, 0.2, 0.1, 0.05, 0.02, 0.01, 0.005, 0.002, 0.001
Interface RS232 (USB, TCP/IP optional)
Input volatge 220VAC/50Hz, 115VAC/60Hz
Power input (wattage) 75 VA
Dimensions (Width x Depth x Height) 215 x 135 x 100 mm
8.46 x 5.31 x 3.95 in.
Weight 3 kg

Keywords: Conductivity Detector, Detector Module, Uv Absorption,

Other products and services from Eh Systems

09-12-2011

EH Systems, Capillary Electrophoresis, CEL-3000

With a mounting rack the miniaturized detectors:,,, and could also be attached to CEL-3000 to form a complete CE system. We have developed,, and detector modules to plug into CEL-3000 to form a integrated CE system. CEL-3000 is a dual-lifter autosampler for capillary eletrophoresis applications.


09-12-2011

EH Systems, Capillary Electrophoresis, CEP-5000

When used with the miniaturized detectors:,,, and we have a fully portable CE system for field analysis and applications. The modular design makes it possible for CEP-5000 to work with any detector that has CE flow cell when used in lab. CEP-5000 is a portable autosampler with dual lifter for capillary eletrophoresis applications. Software is used for instrument control, data acquisition and analysys.


09-12-2011

EH Systems, Capillary Electrophoresis, Software update

If you want to keep a copy of the old PKS.jar file you need to copy it to another folder that is outside of "Installation_Folder". To upgrade to CE Station Software: CE_STN_5.9.9_20081031: Highly recommended!!. You need to overwrite the old PKS.jar file with the new one.


09-12-2011

EH Systems, Capillary Electrophoresis, LIF-820 detector module

S/N> 5 for a solution of 10^-11 M of FITC in a flow cell capillary of 75um ID with 473nm DPSSL laser at 10mW.Other laser modules optional. LIF-820 is a high performance Laser induced fluorescence detector module. Default to 520 ± 10 nm, other filters available upon request. Noise level at empty cell (time constant 1 s.