ER825 Multi-Channel Contactless Conductivity Detector

Multichannel Configurable Chemistry Workstation
One to eight input channels
Use with either third-party or eDAQ software
Measure pH, temperature or other detector signals

Overview
Applications
Photos & Videos
Specifications
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The ER825 C4D Detector is a flexible and configurable, 8 channel workstation. It supports capacitively-coupled contactless conductivity detection (C4D) for capillary electrophoresis, microchip electrophoresis, ion chromatograph/HPLC and flow injection analysis applications. In addition, signals from other sensors and analog voltages can be measured and recorded simultaneously.

The ER825 supports between one and eight channels of data. The number and type of channels must be specified when the unit is ordered. This enables the measurement of conductivity and other parameters such as pH, temperature, dissolved oxygen etc. at up to eight locations in a system. This makes the ER825 into a true Multichannel Configurable Chemistry Workstation.

Two module types are available:

EA025 C4D Headstage Module for connection to C4D headstages. The C4D excitation frequency and amplitude can be optimised by the user for maximum signal sensitivity, using the C4D Profiler software which is included.
EA010 General Purpose Module for connecting to isoPods or direct analog inputs (such as a UV detector).

The ER825 is available in the following configurations, depending on your application:

ER825R: Two Channel Contactless Conductivity Detector with PowerChrom software, for capillary electrophoresis, microchip electrophoresis and chromatography-type applications. Installed with one EA010 and one EA025 module.
ER825C: Multi-Channel Contactless Conductivity Detector with Chart software (maximum of 8 channels), for flow injection analysis and conductivity monitoring applications.
ER825: Multi-Channel Contactless Conductivity Detector, for people wishing to use third-party software to record the data. This includes ChemStation from Agilent, 32 Karat from Beckman Coulter and LabVIEW (using the virtual serial interface over USB connection to computer). In this configuration, the ER815 provides both analog and serial data output.

Users can change the configuration of their ER825 themselves at any time, from using eDAQ software to third-party software or vice-versa, using the ER8x5 Converter and Updater software.

The product comes with the following software included: C4D Profiler V2 (to optimise the settings), C4D Configurator (to select the settings) and ER8x5 Converter and Updater (to change the firmware).

The unit should be purchased with the required number of EA010 and EA025 Modules. Systems can be expanded or reconfigured at the nearest eDAQ office.

Research Areas

Technical and Application Notes

Technical Notes

Application Notes

Citations

Gas Diffusion Cell Geometry for a Microfluidic Dissolved Inorganic Carbon Analyzer. Philip J. Bresnahan and Todd R. Martz. Ieee Sensors Journal, 18, 2211-2217, 2018. DOI: 10.1109/jsen.2018.2794882
Quantitative Characterisation of Conductive Fibers by Capacitive Coupling. Andres Ruland, Rouhollah Jalili, Attila J. Mozer, and Gordon G. Wallace. Analyst, 2017. DOI: 10.1039/C7AN00442G
Clinical screening of paraquat in plasma samples using capillary electrophoresis with contactless conductivity detection: Towards rapid diagnosis and therapeutic treatment of acute paraquat poisoning in Vietnam. Anh Phuong Vu, Thi Ngan Nguyen, Thi Trang Do, Thu Ha Doan, Tran Hung Ha, Thi Thao Ta, Hung Long Nguyen, Peter C. Hauser, Thi Anh Huong Nguyen, Thanh Duc Mai. Journal of Chromatography B, 1060, 111–117, 2017. DOI: 10.1016/j.jchromb.2017.06.010
Microfluidic Breadboard Approach to Capillary Electrophoresis. Israel Joel Koenka, Jorge Sáiz, Paul Rempel and Peter C. Hauser. Analytical Chemistry, 88, 3761−3767, 2016. DOI: 10.1021/acs.analchem.5b04666
Electric field-driven extraction of lipophilic anions across a carrier-mediated polymer inclusion membrane. Hong Heng See, Peter C. Hauser. Analytical Chemistry, 83, 7507-13, 2011. DOI: 10.1021/ac201772g
Optimization of capillary electrophoresis method with contactless conductivity detection for the analysis of tobramycin and its related substances. Mohamed N. El-Attug, Jos Hoogmartens, Erwin Adams, Ann Van Schepdael. Journal of Pharmaceutical and Biomedical Analysis, 58, 49–57, 2012. DOI: 10.1016/j.jpba.2011.09.032
Capillary electrophoresis with capacitively coupled contactless conductivity detection for the determination of cis/trans isomers of octadec-9-enoic acid and other long chain fatty acids. Yong Foo Wong, Bahruddin Saad, Ahmad Makahleh. Journal of Chromatography A, 1290, 82-90, 2013. DOI: 10.1016/j.chroma.2013.03.014
Referenced Capacitively Coupled Conductivity Detector for Capillary Electrophoresis. Marko Stojkovic, Boris Schlensky, Peter C. Hauser. Electroanalysis, 2013. DOI: 10.1002/elan.201300413
The analysis of small ions with physiological implications using capillary electrophoresis with contactless conductivity detection. Ioan-Ovidiu Neaga, Bogdan Cezar Iacob, Ede Bodoki. Journal of Liquid Chromatography & Related Technologies, 2014. DOI: 10.1080/10826076.2013.825862
Study on urinary metabolic profile of phenylketonuria by micellar electrokinetic capillary chromatography with dual electrochemical detection. Dongli Zhang, Wenli Li, Junbo Zhang, Wanrong Tang, Chenxu Qian, Minghao Feng, Qingcui Chu, Jiannong Ye. Analytica Chimica Acta, 2011. DOI: 10.1016/j.aca.2011.03.044
Flow injection determination of free fatty acids in vegetable oils using capacitively coupled contactless conductivity detection. Ahmad Makahleh, Bahruddin Saad. Analytica Chimica Acta, 694, 90–94, 2011. DOI: 10.1016/j.aca.2011.03.033
Determination of creatine and phosphocreatine in muscle biopsy samples by capillary electrophoresis with contactless conductivity detection. Hong Heng See, Julia Schmidt-Marzinkowski, Worapan Pormsila, Réjane Morand, Stephan Krähenbühl, Peter C. Hauser. Analytica Chimica Acta, 727, 78-82, 2012. DOI: 10.1016/j.aca.2012.03.055
Determination of underivatized long chain fatty acids using RP-HPLC with capacitively coupled contactless conductivity detection. Ahmad Makahleh, Bahruddin Saad, Gan Hui Siang, Muhammad Idiris Saleh, Hasnah Osman, Baharuddin Salleh. Talanta, 81, 20-24, 2010. DOI: 10.1016/j.talanta.2009.11.030
Capacitively coupled contactless conductivity detection as an alternative detection mode in CE for the analysis of kanamycin sulphate and its related substances. Mohamed N. El-Attug, Erwin Adams, Jos Hoogmartens, Ann Van Schepdael. Journal of Separation Science,34, 2448–2454, 2011. DOI: 10.1002/jssc.201100267
Simultaneous determination of atenolol and amiloride in pharmaceutical preparations by capillary zone electrophoresis with capacitively coupled contactless conductivity detection. Khaldun M. Al Azzam, Bahruddin Saad, Hassan Y. Aboul-Enein. Biomedical Chromatography, 24, 948-53, 2010. DOI: 10.1002/bmc.1390
Monitoring of nitrite, nitrate, chloride and sulfate in environmental samples using electrophoresis microchips coupled with contactless conductivity detection. Camilla Benevides Freitas, Roger Cardoso Moreira, Maria Gizelda de Oliveira Tavares and Wendell K. T. Coltro. Talanta 147, 335–341, 2016. DOI: 10.1016/j.talanta.2015.09.075
Determination of Major Inorganic Ions in Solution of the Nutrient Film Technique Hydroponic System by CZE with Capacitively Coupled Contactless Conductivity Detection. Takato Hasebe, Chisaki Hiroshima, Ryota Azuma, Mitsuru Abo. Bunseki kagaku 65(5):283-288, 2016. DOI: 10.2116/bunsekikagaku.65.283

Videos

C4D Profiler V2 Software to Optimise C4D Settings

C4D Configurator Software

View more related videos on the Screencast Training Videos Wiki

Channels: 1 — 8 (specify when ordering)
Input connectors: 10 pin LEMO (for C4D) or 8 pin LEMO (for other detectors)
Signal gain: x1, x10, x100
Analog signal resolution: 16 bits (Chart software), 24 bits (PowerChrom software)
Virtual serial port resolution: 24 bit
Input gain ranges: ±20, 50, 100, 200, 500 mV, ±1, 2, 5 V
Excitation frequency: 20 — 2000 kHz
Excitation amplitude: 2 — 40 V AC p-p, sinusoidal, @ <50 mA
Offset: ±5.5 V on ±10 V output range
Low pass filters: 1000 (off),10, 1 Hz
Output signals: ±5 V max, or USB with virtual serial interface
Back panel connectors: BNC (analog voltage), USB (virtual RS232 serial)
Trigger input from a Contact closure or TTL. Trigger cable can be ordered separately
Power requirements: (mains adaptor supplied) 12 V DC, ~10 W
Dimensions (h - w - d): 65 mm - 200 mm - 250mm (2.6 - 7.9 - 9.8”)
Weight: 1.8 kg (4.3 lb) maximum
Operating temperature: 0 to 35 °C
Operating humidity: 0 to 90% (non-condensing)

The optimum excitation frequency and amplitude can be measured using the C4D Profiler V2 software.
The excitation frequency and amplitude can be set by using:
- When serial firmware is installed: use C4D Configurator software.
- When applications firmware is installed: use the option in PowerChrom or Chart software.
The firmware can be changed by the user at any time, between serial firmware (signal recorded in third-party software) and applications firmware (signal recorded in eDAQ software), using the ER8x5 Converter and Updater software.

eDAQ reserves the right to alter these specifications at any time.

More Information

ER825_C4D_multi-channel_Detector (210 KB PDF)

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Also see:

ER815 Contactless Conductivity Detector

ET120 C4D Headstage for Capillary Electrophoresis

ET125 General Purpose C4D Monitor Headstage

ET130 IC/HPLC C4D Detector Headstage

ET131 Configurable C4D Detector/Monitor Headstage

EC020 Standard Test Solutions for C4D Applications

EA025 Headstage Module

EA010 GP Analog Input Module