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IR-860 Energy Modulator | |
The IR-860 Energy Modulator is a variable speed rotating disk chopper designed for use with radiation sources, including blackbody, tungsten filament, mercury lamps, Nernst glowers and as part of instruments where modulated radiation is needed. The IR-860 has been specially designed to integrate with the IR-563 & IR-564 Blackbody Sources. For other applications a table mount is available. The IR-860 Energy Modulator System consists of the Modulator head assembly and Modulator controller. The controller operates the motor, blade rotation, and speed of the modulation frequency. Interchangeable blades are available to allow modulation from 1.25 Hz to 45,000 Hz. The standard blade is an 8-slot blade with a frequency range from 10 to 1000 Hz. |
IR-860 Controller
Motor Spindle Speed Range: 75-7500 RPM
Warm up Time: One Hour for optimum stability
Stability: 0.5% of set frequency or 0.25% of full scale over 4 hours
Control Type: Closed Loop Brushless DC motor controller with phase sensors.
Meter Indication: Chopping Frequency in Hertz.
Meter Accuracy: ± 1 digit.
Reference Frequency Output: 0-5 V TTL level, 600 Ohms output.
Power requirements: 200 Watts 110 or 220VAC 50-60 Hz
Blades
Blade |
Frequency Range |
Number of Slots |
Slot Width |
Maximum Aperture |
A |
1.25-125Hz |
1 |
7.854 |
1 |
B |
2.5-250 Hz |
2 |
3.927 |
1 |
C |
10-1000 Hz |
8 |
0.982 |
0.992 |
D |
30-3000 Hz |
24 |
0.327 |
0.327 |
E |
50-5000 Hz |
40 |
0.196 |
0.196 |
F |
100-10000 Hz |
80 |
0.098 |
0.098 |
G |
300-30000 Hz |
240 |
0.0327 |
0.0327 |
H |
62.5-6250 Hz |
50 |
0.157 |
0.157 |
J |
450-45000 Hz |
360 |
0.022 |
0.022 |
K |
3.75-375 Hz |
3 |
2.618 |
1 |