LC-4C Amperometric Detector
![[Picture of LC-4C]](../../images/products/ec/LC-4C.jpg)
The LC-4C is an analog detector specifically designed for LC/EC, with high current sensitivity, extensive filtering, offset and
autozero. In addition to front panel controls, it can also be controlled from a PC using the ChromGraph
software. One advantage of PC control is that it allows potential wave forms other than fixed potential to be applied to the cell
(e.g., a triple pulse wave form for PAD applications).
There are 2 channels available on the LC-4C - the detector channel, which applies a potential and measures the current response,
and the generator channel, which can apply a potential. The detector channel is used in all experiments, whereas the generator
channel is only used in experiments in which analyte is electrolyzed before reaching the detector electrode; for example, dual
series electrode applications. If the current on both channels needs to be recorded, two LC-4C detectors can be combined, or an
LC-4C can used in combination with a Petite Ampere. Alternatively, up to 4 channels can be monitored using
the LC epsilon detector.
Features
- Amperometric detector for thin-layer flow cells
- Two channels - generator and detector
- Generator - conducts redox reactions at upstream electrode
- Detector - high current sensitivity, filtering, offset, and autozero
- Controlled from front panel or PC
- PC allows programmable potential wave forms (e.g., for PAD)
- Multi-channel capability with additional LC-4C or Petite Ampere
- Modified LC-4C available for capillary electrophoresis
Specifications
| Channels |
Generator and detector channels included.
|
| Applied Potential |
Generator Channel: 0 ± 1.900 V
Detector Channel: 0 ± 1.999 V
|
| Gain |
Generator Channel: 100 nA/V, 1.0 µA/V, 10 µA/V
Detector Channel: 0.1, 0.2, 0.5, 1.0, 2.0, 5.0, 10, 20, 50, 100, 200, 500 nA/V and 1, 2, 5, 10, 20, 50 µA/V.
|
| Filter |
Generator channel: One-pole filter, non-adjustable for each gain range
Detector Channel: Four-pole active filter with 14 settings (0.02, 0.03, 0.04, 0.05, 0.06, 0.08, 0.1, 0.15, 0.2, 0.3, 0.4,
0.5, 0.8, 1.0 Hz)
|
| Manual Offset |
Detector Channel: 0-10, 0-100, 0-1000 nA
|
| Autozero |
Detector Channel: Minimum of ± 20 times gain range setting.
The rezero point is adjustable to ± 30% of the full-scale setting.
Manual and autozero offsets can combine to extend range.
|
| Output |
Generator Channel: Iout: 1 V (10 V Max.) on terminal strip.
Detector Channel: Iout: 1 V full scale (10 V Max.) and 10 mV full scale (100 mV Max.) are available on both banana jacks and
the rear panel terminal strip.
Eout: Available on terminal strip.
|
| Inputs |
2 inputs on rear panel terminal strip for control of autozero and chart marker. Use with TTL low-level and switch closure
outputs on autosamplers and integrators.
|
| Control |
Connects to PC or ChromGraph DA-5 interface. Controls gain and filter on detector channel, cell on/off, autozero, and chart
marker. Controls potential with ChromGraph software.
|
| Power |
100, 120, 220 or 240 VAC, 50/60 Hz, 120 Watts Max. Load |
Amperometric Detectors 
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