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Manual instrumentation
Our manual range of instruments can be customised
to suit requirements. One-off custom built instrumentation is also
available. For more information please contact ACM Instruments.
Select any of the following options for a more detailed descriptions
of each instrument.
Research Potentiostat [Manual]
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The Research Potentiostat is very versatile. It is a 2 or 3 Electrode Potentiostat Galvanostat or Zero Resistance Ammeter. Clear wiring diagrams in the water resistant manual visually show how to connect the instrument to a cell. A ± 4 or 1 Volt range dialled knob and an external input control the cell voltage or current. Isolated measuring terminals enable Cell Potential Dialled Knob Potentiostat Potential and Polarisation Current to be measured using a simple low input impedance voltmeter without affecting the cell potential. |
Zero Resistance Ammeter [Manual]
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The Galvanic Current between two coupled electrodes and the couple potential is measured using a Zero Resistance Ammeter or ZRA. It has seven internal current ranges with range selection light emitting diodes giving an easy to measure range of between 100 pA to 325 mA. A digital meter is fitted to the front panel for easy visual measurement of Galvanic Current and Voltage. Two voltage outputs are provided that are isolated from the cell for measurement of Current and Voltage using a voltmeter. Frequently the rechargeable battery option is selected for use with this instrument |
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The output voltage of the Sweep Generator is normally connected to the external input of the Research Potentiostat. In so doing the Sweep Generator output controls the output of the Potentiostat usually for Cyclic Voltammeter types of test. The sweep generator can sweep in a linear fashion between ± 4V either as a single return or continuous sweep. A pause facility is also included. The start and stop potentials are set using two lockable dialed knobs. Sweep time is set using three knobs giving a total test time for a single sided sweep of between 1 second to 22 days. |
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A simple manual LPR meter for flush and standard two or three electrode cells. It has a number of useful features including twin range 0 - 2 and 200 mpy; digital readout; 0 - 2 Volt output; 4 - 20 mA output; more than a 24 hour battery life with an internal charging unit; a carrying handle and a check calibration terminal. |
The Dual Channel Linear Polarisation Meter is a two channel instrument for measuring Linear Polarisation Resistance on a continuous basis. It can operate with either two or three electrode LPR probes. We custom build these instruments to the customer's requirements. They can thus be pre-calibrated for a specified electrode area have a specified range and have either Voltage or 4-20mA current outputs for measurement of the result. Typically the instrument is designed to operate with 4.5cm2 electrodes and have a 0-2Volt output covering a range from 0-200 mpy.
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LPR or ZRA tests with two electrode probes. Two buttons on the front panel of the instrument clearly labelled LPR and ZRA are all that are needed to operate this simple instrument. Each vandal resistant button is illuminated with a small light to indicate the technique in operation. A digital meter on the front panel of the instrument gives a read out of 0-200.0 µ A or 0-200.0 mpy depending on the technique used before turning itself off automatically. Such power saving features combined with the standard sized 9V Lithium PP3 type battery enables up to 4 000 readings over a period of 10 years to be taken before the battery needs replacing. The instrument is calibrated for use with 4.5 cm2 electrodes. Simple conversion factors supplied with a brief manual can be used for electrodes of different areas or materials. The Pocket Machines dimensions are 16 * 8.5 * 3 cm and it is supplied with a small carrying pouch and electrode cable terminating with a standard 6 pin Amphenol socket for connection to most corrosion probes. The instrument although useful by itself makes a good back up instrument for the Field Machine due to its light weight of 300 grams and small size. |
This instrument is fitted with a 1 Amp Research Potentiostat and Eight Zero Resistance Ammeters. It can be used to perform Potentiostatic Potentiodynamic or Galvanic tests on a couple of up to eight test electrodes. In either galvanic or polarisation mode the individual current response can be measured from each test electrode. Typically instruments of this type are used to test multiple metal systems such as those experienced in central heating systems or welds.
A battery powered option is available for the
Research Potentiostat
Zero Resistance Ammeter and Sweep Generator
