The Model 1402 Static Potentiostat was designed specifically as a low-cost circuit for use with commercial electrochemical gas sensors. It can, however, be used for many other applications, with or without modification. The circuit is a standard, grounded-working electrode design. For information on the operation of a potentiostat, click here
The Model 1401 Power Supply is intended for use with up to 8 Model 1402 circuits. It provides +5V and -5V at 20 mA and operates from a wall transformer. There is also space for installing parts to make a higher-current +5V supply for other uses. (See right side of above diagram.)
Features:
Switch-selected current ranges: 1 microamp per volt; 10 uA/V; 100 uA/V; u1000 A/V (approx. 1 nA to 3 mA)
OEM part for manufacture or research lab use. Also available in enclosure.
Screw-adjustable gain, offset, and applied bias
Built-in low-pass noise filter with cutoff about 1 Hz. (Can be disabled.)
Output available in inverted and noninverted orientation.
Modifiable for special uses, such as externally-controlled bias or higher voltages.
Socketed op amps allow use of premium parts for lower noise or higher voltage operation.
Also available in small, surface mount version. (Inquire)
Applications:
Standard porous-electrode electochemical gas sensors.
A versatile building block for sensor test systems.
Constant-voltage source.
Constant-current source with adjustable ranges, not ground-referenced.
Resistance-based sensors requiring careful control of excitation current (conductive polymer, composite polymer, etc.)
Voltammetric potentiometer (with function generator and slight modification).
A bank of 10 Model 1402 Potentiostats used for research on developing improved sensor membranes. The customer mounted these boards simply, using spacers, leaving all adjustments and connections available to the experimenter. The circuits are controlling the six test jigs in the foreground (4 together and 2 separate, in front)
Model 1402 Static Potentiostat, assembled and tested, supplied with 12" power cable, 12" cell cable, and 16" signal cable. (please indicate if longer power cables are needed) Requires a +5V, -5V power supply for operation. $160.
Model 1401 Power Supply, assembled and tested, with +5V and -5V outputs $ 95.
Model 1410 Cable Finishing Kit, containing Molex pins, housings, and instructions for making custom cables for special applications. Parts supplied for five cables. Wire (22 gauge solid or stranded) and some soldering skill required. $ 16.
Model 1420 Potentiostat. Consisting of Model 1402 and 1401 power supply, mounted in an ABS Bud box, with power supply and external terminals. For painless laboratory use. $ 480.
The Custom Sensor Solutions, Inc., Model 1402 Static Potentiostat is warranteed to be free from defects in manufacture for a period of 12 months from purchase. Due to the wide variety of possible uses for this instrument, it cannot be warranteed as fit for any particular purpose.
Call Custom Sensor Solutions, Inc., at 520-544-7523, fax: call for connection.
For further information, call the above number, or email info@customsensorsolutions.com
Current September 8, 2005.