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.
 
 
Specifications:
  
Motor Spindle Speed Range:
 75-7500 RPM
Warm Up Time:
 1 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 220 VAC 50-60 Hz
Dimensions: Modulator:
 6.88” Diameter (175mm)
Controller:
 8.5” x 8” x 3.75” (216x203x95mm)
Weight:
 6.5 lbs
Shipping Weight 10 lbs

 
Blade
Freq Range
Number of Slots
Slot Width @ Center
Maximum Aperture
A 1.25-125HZ 1 7.854” 1.0”
B 2.5-250HZ 2 3.927 1.0
C 10-1000HZ 8 0.982 0.992
D 30-3000HZ 24 0.327 0.327
E 50-5000HZ 40 0.196 0.196
F 100-10000HZ 80 0.098 0.098
G 300-30000HZ 240 0.0327 0.0327
H 62.5-6250HZ 50 0.157 0.157
J 450-45000HZ 360 0.022 0.022
K 3.75-375HZ 3 2.618 1.0
   

 

 

Additional Product Information
Product Literature [PDF]