EVC4000

￭EVC 4000

Replacement Voltage Clamp & EVC3 Preamplifier

Replacement module for 1, 2, 3, or 4 channel EVC4000

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.

Specifications

　

PREAMPLIFIER: Input Resistance 10^12 Ohms

PREAMPLIFIER: Input Leakage Current 100pA, max.

PREAMPLIFIER: Maximum Input Voltage ±15V

VOLTAGE CLAMP: Panel Display ±200mV ±0.1mV

VOLTAGE CLAMP: Clamp Voltage / External Input 100mV/V

VOLTAGE CLAMP: Range of Voltage Electrodes ±32Vs

VOLTAGE CLAMP: Max. Clamp Voltage ±100mV

VOLTAGE CLAMP: Fluid Resistance Compensation 0 to 1000 Ohms

CURRENT CLAMP: Panel Display ±999uA ±1uA

CURRENT CLAMP: Maximum Clamp Current ±1 milliampere

CURRENT CLAMP: Current Clamp Output 1uA/mV

DISPLAY RESOLUTION: Voltage 0.1mV

DISPLAYRESOLUTION: Current 1uA

DIMENSIONS 18.25 x 7.2 x 9.6 in. (46 x 18 x 24 CM)

SHIPPING WEIGHT (EVC4000-4) 26 lb (12 kg)

WPI 台灣總代理

台灣節能企業股份有限公司

TEL：02-2715-1616；02-2716-0905 FAX：02-2715-5268

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