Adding the AD131-TC Thermoelectric Controller module to the AD131 enables the use of AD4x series heads with cooling capability(designated by a "-C" on the model name.). AD4x heads are easily exchanged on the same AD131 unit.
AD131 Photodetector Module 190 nm to 4.8 μm
• Combines SP photodiode detector, programmable charge integrator, and data conversion in a compact package • Expandible with add-on modules for cooled sensor capability • Null function for background noise subtraction • Programmable gain ranges • Windows® based data acquisition software included • Easy to install and use on any SP Monochromator • Internal data averaging
FEATURE | VALUE |
---|---|
Wavelength Range | Depend on Sensor type |
A/D Resolution | 16 bit |
A/D Conversion Rate | 500 kSPS |
Response Rate | USB 2.0 |
Time Constant | 10 μs, 100 μs, 1 ms, 10 ms(selectable) |
Low Pass Filter | 1/3 Hz, 1 Hz, 10 Hz, 100 Hz(selectable) |
Phase Shift | 1-180 degrees(selectable) |
Amplification Gains | X1 to X10(selectable) |
Phase Lock Loop Voltage Input | 0-5 V Optical Chopper Reference Signal |
Trigger Input Voltage | 0-5 Vdc TTL |
Supply Voltage | 100-240 VAC |
USB 2.0 Transfer Rate | 480 Mbits/sec |
SP Part # | Detector Type | Size | Range | Temp | Sensitivity | Dark resistance or Current |
---|---|---|---|---|---|---|
AD421 | Si | 5.8 X 5.8 | 190-1000 | 25℃ | 0.4 A/W at 720nm | 20 pA |
AD427* | Pbs | 3 X 3 | 1000-2900 | 25℃ | 5 X 10^4 V/W at 2200nm |
0.5 to 2.5 MΩ |
AD429* | PbSe | 3 X 3 | 1500-4800 | 25℃ | 5 X 10^2 at 4μm | 0.3 to 1.5 MΩ |
AD430 | InGaAs | 3 dia | 800-1700 | 25℃ | 0.95A/W at 1.55μm | 15 nA | AD431 | Si/InGaAs | 2.4 X 2.4 | 300-1700 | 25℃ | 0.45 A/W at 0.94μm | 30 pA |
1 dia | 25℃ | 0.55A/W at 1.55 μm | 1 nA | |||
The following require the AD131-TC Thermoelectric Controller module in addition to the AD131 Photodetector module | ||||||
AD427-C* | Cooled PbS | 4 X 5 | 1000-2900 | -10℃ | 8 X 10^4 at 2.2μm | 0.5 to 10 MΩ |
AD429-C* | Cooled PbSe | 3 X 3 | 1500-4800 | -10℃ | 1 X 10^3 at 4μm | 1.7 to 7 MΩ |
AD430-C | Cooled InGaAs | 3 dia | 800-1700 | -10℃ | 0.95A/W at 1.55μm | 1 nA |
AD431-C | Cooled Si/ InGaAs | 2.4 X 2.4 | 300-1700 | 25℃ | 0.45(25℃) at 0.94μm | 30 pA |
1 dia | -10℃ | 0.55 at 1.55μm | 0.07 nA |
* Requir 450 Hz chopped optical signal
Compact, Convenient, Affordable
The AD131 is a computer controlled data acquisition device for photodiode detectors, covering a wide wavelength range with Si, InGaAs, PbS, ans PbSe photocells from the AD4x series. The unit contains an internal programmable charge integration amplifier, a 20-bit A/D converter, and a microprocessor with a RS232 interface. Signal processing functions take place internal to the AD131 to greatly reduce the noise level of the measured signal, including Correlated Double Sampling(CDS) and signal oversampling for digital filtering. Windows® based software allows for stand-alone operation or integrated control and data acquisition with any of the Digikrom line of monochromators.Adding the AD131-TC Thermoelectric Controller module to the AD131 enables the use of AD4x series heads with cooling capability(designated by a "-C" on the model name.). AD4x heads are easily exchanged on the same AD131 unit.