2049 - Potentiostat / Galvanostat

2049 Potentiostat GalvanostatOld Price, brand new features

This instrument is well suited for routine purposes and long-term applications such as corrosion measurements under stress or whenever it is required to perform continuous measurements without immobilizing higher-cost instrumentation. The Model 2049 is complete with a 4’/2-digit LCD display for clear and accurate reading of both current and potentials. These signals are also permanently available as low-impedance replicas at the front-panel in order to simplify the connection of external devices. The low-noise characteristics make the Model 2049 well suited for low-current applications, while the extreme simplicity of the commands together with the fully-protected circuitry make this potentiostat the ideal choice for industrial and classroom applications.

Technical Specifications:

  • Output voltage: ±22V
  • Output current: ±1.2A (Continuous)
  • Output current (Peak): ±1.6A (5 sec peak)
  • Controlled potential range: ±5.000V
  • Controlled potential resolution: 1 mV
  • Operating modes: Potentiostat or Galvanostat (floating or grounded)
  • Galvanostat ranges: 7 decades 1µA up to 1A
  • Galvanostat setting resolution: 0.1% of the selected range
  • Reference input leakage current: < 5x10 -11 A @ 25°C
  • Overall response time:
    • (Potentiostat, 1kOhm load); 0.7 µsec
    • (Potentiostat, full load); 1.2 µsec
  • Response time as galvanostat: (100 mA range); 8 µsec
  • Output ripple and noise:
    • (No load) - 100 µV peak-to-peak
    • (Full load) - 250 µV peak-to-peak
  • Potential stability:
    • (VS line voltage) - 100 µV (10% variation)
    • (VS temperature) - 10 µV/°C
    • (VS time) - 100 µV/week
  • Display: 4 1/2 digit LCD, 20mm characters
  • Overload protections:
    • Voltage (reference input) - ±100V D.C. continuous
    • Current - Permanent output short-circuit allowed
  • Interfacing capability: Digital l/O for cell and current ranges.
  • Dimensions & weight: 440xl50x420mm depth, 12kg

Operating principle:

operating schemeThe main amplifier A1 contains the power stages and provides to the output current, voltage swing, gain, short-circuit protection and the summing node for the various inputs and feedback. The electrochemical cell is connected with the COUNTER electrode to the output of A 1and the WORKING electrode to the electrical common with a set of calibrated shunt resistors for precise current measurement. The differential amplifier A 2measures the voltage between the REFERENCE and WORKING and provides the negative feedback signal for potentiostatic mode operation. A 3is a unity-gain buffer amplifier for the current signal and for negative feedback in galvanostatic mode. The reference source is connected to a multi-turn potentiometer for precise setting of the cell potential. All signals (current, reference and standard source) can be monitored with the built-in DVM.

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