IR-301 Controller
  • Utilized by all our blackbody sources
  • 0.1°C Display and Setpoint Resolution
  • Advanced Multi-Set P.I.D. Controller
  • +/-0.2°C Stability and Accuracy
  • Menu Driven User Interface
  • Large, Bright LED Display
  • RS-232 and IEEE-488/GPIB Interfaces
  • Available 220V operation
  • Rackmount Option

The IR-301 controller is a microprocessor based PID (Proportional, Integral and Derivative) system for regulating the Blackbody's Radiating Surface. At Infrared Systems Development, we have taken a leap forward from the standard PID Controller types of past years. We do this by utilizing five (5) independent PID parameter groups, each for a specific temperature range, internally selected based on the Setpoint. To control stability, the Standard Proportional Band with Automatic Reset and Derivative method is utilized. Unlike standard PID control, these parameters are totally dedicated to control stability only. This allows us to reduce the Proportional Band, creating a much more stable Blackbody system.

To control warm-up characteristics, we start with an independent Proportional Band, much wider than the stability Proportional Band. We then take the operational span and divide it into five smaller spans. Each of these spans is assigned a factory-selected range of PID Parameters values. Selecting a set temperature automatically loads the proper warm-up parameters into memory for that specific temperature. This process practically eliminates the need for continuous reactionary parameter changes as required by standard PID.

All control parameters, selections and calibration procedures are accomplished through simple MENU selections using the four front panel buttons. These MENU selections are organized into Sections. Each Section presents a specific set of related functions. Internally the IR-301 was designed for maximum accuracy while maintaining our trademark reliability and quality. As is apparent with the use of dual redundant solid state (zero-voltage switching) power relays, RFI filters and an entire temperature sensor feedback loop; wire, cable, pins and connectors, being manufactured from special thermocouple alloys to eliminate the effects of ambient temperature change. The Thermocouple Cold Junction is mounted to a high precision RTD sensor to accurately monitor the CJC to provide compensation for ambient temperature variations. All connections are made from the rear for true rackmount capabilities.

1ºC or 0.1ºC Selectable
PID dual Zero voltage firing state power relays
Dual display: BB Temp is shown on upper LED display; Set Point and Parameters are shown on lower LCD Display
Sample Rate:
Cavity Temp is updated 10 times per second; digitally filtered to eliminate noise
Selected at Factory. Standard is ºC
5.0 amps at 120 VAC, 2.5 amps at 230 VAC
Operating Environment:
0 to 40ºC ambient temp with relative humidity less than 95% non-condensing
Power Requirement:
105-125 Volts, 50-60 Hz., 500 Watts Max
Dimensions (HxWxL):
5.10” x 12” x 13.4” 
(Rackmounted 5.25” x 19” x 14.4”
9 lbs (Rackmounted 10 lbs)
Shipping Weight: 13 lbs

Options and Additional Accessories:
RS232 and IEEE/GPIB Communications
220V Operation

Additional Product Information
Dimension Drawings [PDF]