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Replacement Voltage Clamp & EVC3 Preamplifier
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- Replacement module for 1, 2, 3, or 4 channel EVC4000
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| Description |
Voltage Clamp Technique
EVC4000 employs the voltage clamp technique to monitor membrane permeability as a function of membrane voltage or applied chemicals. When combined with WPI’s patented EKC and EKV cartridge electrodes, EVC4000 can efficiently voltage or current clamp up to four sample membranes simultaneously using safe moderate voltages on the current wire leads.
Safe, low-voltage system
The superior design of the cartridge electrodes makes 100-volt current excursion unnecessary, so this safe, low-voltage system is easier to adjust and use. Extremely stable and accurate, each module, with its companion preamplifier, can operate independently in one of three different modes: Voltage Clamp (VC), Current Clamp (CC), or Open Circuit Potential (PD) measurement.
Control
EVC4000 can be controlled from the front panel of the instrument or from computer generated commands applied at the rear panel of the instrument. A feature unique to EVC4000 is an electronic potentiostat in the preamplifier box that maintains the serosal electrode invariant potential at zero relative to system ground. The preamplifier apparatus actively maintains one surface of the test membrane close to ground potential under all operating conditions.
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| Specifications |
| PREAMPLIFIER: Input Resistance |
1012 Ohms |
| PREAMPLIFIER: Input Leakage Current |
100 pA, max. |
| PREAMPLIFIER: Maximum Input Voltage |
±15 volts |
| VOLTAGE CLAMP: Panel Display |
±200 mV ±0.1 mV |
| VOLTAGE CLAMP: Clamp Voltage / External Input |
100 mV per Volt |
| VOLTAGE CLAMP: Range of Voltage Electrodes |
±32 Volts |
| VOLTAGE CLAMP: Max. Clamp Voltage |
±100 mV |
| VOLTAGE CLAMP: Fluid Resistance Compensation |
0 to 1000 Ohms |
| CURRENT CLAMP: Panel Display |
±999 ?A ±1 ?A |
| CURRENT CLAMP: Maximum Clamp Current |
±1 milliampere |
| CURRENT CLAMP: Current Clamp Output |
1 ?A / mV |
| DISPLAY RESOLUTION: Voltage |
0.1 mV |
| DISPLAYRESOLUTION: Current |
1 ?A |
| DIMENSIONS |
18.25 x 7.2 x 9.6 in. (46 x 18 x 24 CM) |
| SHIPPING WEIGHT (EVC4000-4) |
26 lb (12 kg) |
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| Manuals and Resources |
Instruction Manual
EVC4000-IM-032707.pdf
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| References |
Have you seen a reference to this product in a published paper? If so, email your contact information and the citation and we will send you a free gift! |
| Ordering Information |
To place an order for this product, please contact the appropriate WPI office or distributor.
Customers can order direct from our China office:
WPI China
Address: Rm.20A, No.8 Dong Fang Rd, Liang Feng Building, Lu Jia Zui Financial District, Shanghai PRC
Phone:+86 21 68885517
Fax:+86 21 68885537
Code:200120
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| Accessories |
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| Application Notes |
Application Notes
No Application Notes available for this product at this time. |
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©Copyright 2008 World Precision Instruments, Inc. All Rights Reserved.
