Potentiostats - Galvanostats
- PGU Series
- Modular Series
- High Performance Devices
- Impedance Devices
- BI Potentiostat
- IMP Series
The PGU 20V-2A is the greater brother of the PGU 10V-1A. It has twice the modulation voltage and twice the current. The lowest range amounts to 100µA that is equivalent to a resolution of 10nA=1mV.
The PGU 20V-2A-E is in the performance data equal to the PGU 20V-2A. Nevertheless it has two more measurement ranges with the result that the lowest range amounts to 1µA that is equivalent to a resolution of 100pA=1mV.
The PGU 10V-1A is a cheap laboratory device. As solid constructed potentiostat / galvanostat it performs a variety of standard experiments. The modulation voltage amounts to approximately ±13V, the polarization voltage ±3V with the integrated nominal voltage generators and ±10V with interface. The maximum measureable current amounts to 1000mA, the lowest current range is 10µA that is equivalent to a resolution of 1nA=1mV. The device can be manually used by the integrated instruments, the inputs and outputs can be connected to external measuring instruments or an interface is integated. With interface and our software EcmWin the most common standard methods like OCP measurement, hold experiment, scan, cycle and pulse are available.
The PGU 10V-1A-E is basically like the PGU 10V-1A. Nevertheless it has two more measurement ranges with the result that the lowest range amounts to 100nA that is equivalent to a resolution of 10pA=1mV.
The PGU 100-PCR is our potentiostat / galvanostat for standard measurements and for the measurement of the electrochemical noise. The basic construction is equivalent to the PGU 10V-100mA. Two more modules on the right side of the device extend the features for the measurement of the electrochemical potential and current noise. These modules provide several special features like AC-interlinking, switchable filter frequencies and amplification. Meanwhile we have also equipped other devices of the PGU-series with these noise modules with the result that the measurement of the electrochemical noise is not limited anymore to this type of device.
The PguTouch is derived from our Pgu-MOD TP. This was our first version of a stand-alone potentiostat. In the meantime we have transferred our embedded interface software to a powerful ARM Cortex microcontroller, that is much faster and use less power. Additional we developed an own measurement interface with 24 Bit A/D converters for measurement and 26 Bit D/A converters for highest resolution of the scanner (300nV steps).
The main idea of this instrument was to design a potentiostat/galvanostat that can be used in a lab as well as in the field. In a first step the device can be connected to our EcmWin Software and work like another potentiostat. But the instrument also can “loaded” with routines (so-called sequences) that allow the stand alone mode in the field basically with all typical measurement modes like OCP, Hold-, Scan-, Puls and a combination of these methods. Another feature is the measurement of electrochemical potential and current noise (impedance in preparation).
Furthermore we designed the connection of four working electrodes that can measured in a multiplexed mode. More than one electrode material can used in a continuous process of measurement, for instance for the analysis of some specials in the field.
The devices of the PGU-MOD Series are built for pure computer operation. They contain neither display modules nor manual control elements. The design is considerably smaller than other standard PGU devices. The picture above shows a single device, the following picture a four-channel device. With a current range
of 100nA to 200mA or 100mA to 10nA, most applications are processed. Interface and our software EcmWin are included in the product contents.
When multiple channel devices are connected to a computer, EcmWIn is started several times, so that each module can be operated separately and with full range of functions.
The PGU-1A-OEM is a more powerful model of the PGU-MOD-series. With a maximum current of ±1A measurement tasks that require a higher current can be processed.
It is built in a 42HP case, compared to the 100/200mA variant with its 28HP case. If additional potentiostats shall be accommodated in the same housing, we use a twice as high (6U) standard 84HP wide table top case. The following picture shows the 2A version.
Especially at request of a customer, we equipped the 2A model with additional displays for potential and current. The devices are used for long term measurement and even with the monitor of the computer in sleep mode, the potential and current can be read off quickly.
This instrument equipped version approved well in practice, so we will maintain it.
In addition to the variant of the modular potentiostat with one or more modules, there is also a variant with additional electrometer inputs.
These inputs can be connected to additional reference electrodes to measure the potential at various points of a sample. The measurement and storage of these additional channels is already provided in our EcmWIn software. Depending on your hardware, up to 8 additional channels can be enabled and captured. The values are inserted in the data file as an additional column.
The figure above shows two devices (each with eight working electrodes), which are fed via a counter electrode and are measured against a reference electrode. The special feature is that the potentiostats operate in stand-alone mode. The monitor shows the programming window, via which the parameters of the measurement are set. Up to 8 different functions can be stored and started via the touch panel via function key. If a function is started, the polarization runs according to the programming and the measured data are stored on a USB stick in ASCII format. Depending on the measurement interval, measurements can be stored for up to two years on an 8 GB stick.
Programming is done via the Ethernet interface. Via this interface the data from the measurement can also be downloaded from the USB stick.
The programming of all stand-alone devices is based on the sequence measurement described under Software EcmWin. This allows to process more complex sequences 'standalone'.
The P-M 100 is a purely manually operated potentiostat. It is mainly dimensioned for hold experiments. The purpose is for example to analyze the cathodic disponding. According to requirements the device can be assembled with only one but also with up to 4 modules. The modulation current amounts to approximately ±12V, the current can be displayed with two ranges with 20mA and 100mA, the maximum current amounts to approximately 180mA. The device has digital instruments for current and voltage. An internal nominal voltage generator amounts to ±2V. No in- and output computer connections.
The PGU 10V-10A is a high current device for speration experiments or battery research. The construction is equal to the standard PGU devices. It is completely manual operable. Equipped with interface all standard methods are available. 8 current ranges provide also a sensible resolution of lower currents. As 20V device a higher output voltage is available. Optionally the polarization voltage can be raised accordingly. This can be necessary for example when poor conducting electrolytes are used. But it is also necessary when 12V batteries are tested at a higher modulation current as well as a higher polarization current.
Datasheet (PGU 10V-10A)
The PGU 30V-20A is a little powerpackage. The design and the ease of use is like all PGU standard devices. The special feature is inside. With a modulation current of ±35V, a polarization voltage of ±30V and a maximum current of 20A (at 30V) here is a considerably power available. 6 current ranges provide enough resolution for the lower mA-range.
The PGU 100V-2A is our new 100V standard device. With an output voltage of ±140V, a polarization voltage of ±100V and 8 current ranges from 2000mA to 1µA numerous experiments that require higher voltages can be performed.
The PGU 100V-10A is the big brother of our 100V standard device. Particularly for galvanic experiments or for anodization both high voltages and high currents are needed. Due to the high performance of this device it is equipped with a programmable power supply. Thereby, no excessive power dissipation must be dissipated as heat. However, this means a limitation of the control rate / speed. This device is not suitable for pulse experiments with rise times in the ms range.
This potentiostat / galvanostat can be used for standard and impedance measurements. This device has a signal generator for frequencies from 100µH up to 100kHz. A fast measuring module inside allows frequency measurement up to 100kHz as well. The integrated offset adjustment for current and voltage allows efficient amplification of lowest signals down to the lowest frequency range. Due to a specifically approximation procedure very low current signals can be reliable measured at lower fA-range with the result that impedances up to 200GOhms (where applicable even higher) are measurable. Furthermore all available standard methods in our software can be performed with the result that this device is universal.
The retrieved values of the impedance measurement are provided with frequency, real and imaginary part. To analyze the data we recommend Solatrons® software ZView™.
BI-potentiostat for measurements on rotating ring-disc electrodes. Recently requested out of the fields sensor and medical technology.
Output voltage max. ±11V and current of max. ±1000mA. It has 11 current ranges from 1000mA to 100pA with a resolution of 10fA=1mV at the lowest range. Current and voltage displays, two internal nominal voltage generators und two nominal voltage inputs. Integrated interface.
With this device IPS reacts on increased demand of the market for BI-potentiostats that can reliable measure currents from the lower pA-ranges.
Low noise potentiostat / galvanostat to control lowest currents
Digital voltmeter for potential measurement U-ring / U-disc
Internal nominal voltage generators and inputs for external nominal voltage (for disc and ring)
Current ranges ring and disc 1000mA to 100pA
(max. disc only 1000mA; max. disc and ring 1000mA / 750mA)
Working electrode virtually grounded
- Overload display
A top device in the matter of resolution is the IMP 83 PC T-BC. It has a current range from 100mA to 100pA and can be equipped with a cooling for the current measurement amplifier by request. To optain the lowest currents in the lowest fA / aA range with an almost noiseless signal (of course only with appropriate shielding and where applicable with battery operation). This device is widely used for micro cappillary corrosion measurements.