Alpha Omega Instruments Corp.

- Model Series 850 - Rack-Mounted Thermoelectric Cooler Controlle



The Series 850 Rack Mounted Thermoelectric Cooler Controller offers a wide range of features and options that make it suitable for requirements whether 10 watts of power are required or 1,000 watts.

The Series 850 High Power Rack Mounted Thermoelectric Cooler Controller, like its bench-top counterpart the Series 800 Thermoelectric Cooler Controller, represents a significant advance in the state-of-the-art of thermoelectric cooler (TEC) controllers. It's no secret that in the past, thermoelectric cooler controllers required a significant amount of hands-on operation to provide satisfactory performance, particularly when variations in the load and/or environmental conditions existed. The Series 850 high power TEC Controller utilizes advanced control technology in combination with auto-tuning capabilities to provide unprecedented performance at a very affordable price. 

Unlike many industrial controllers that have cluttered front panels, the Series 850 High Power TEC Controller features a user-friendly front control panel design.  The Series 850 High Power TEC Controller features full proportional, integral, and derivative (PID) control that provides exceptionally tight control over a wide temperature range, as well as rapid response to changes in operating conditions. The auto-tuning feature helps to ensure maximum performance over a broad spectrum of operating conditions. Auto-tuning sets the critical PID terms to match the conditions of the application and provides fast response while minimizing over-shoot and under-shoot. From the users perspective, the need to make frequent manual adjustments has been virtually eliminated. For unique applications, users have the option to manually adjust the instrument's control parameters as desired. RS-485 serial communications is standard. RS 232C is optional.    The Series 850 can be ordered in a wide range of output configurations up to 1,000 watts.

  • Complete Digital Programmability
  • Exceptional Control Stability
  • PID Control
  • Advanced Auto-Tuning
  • Dual Digital Displays
  • Simultaneously displays set-point and actual temperature for on-the-spot assessment.
  • Optional GPIB

  • Maximum control with a user-friendly front panel interface.
  • Provides long-term temperature stability of <0.002o C
  • Obtain tight temperature control with quick response and fast settling time.
  • Automatically adjusts the critical operating parameters for enhanced performance.
  • Simultaneously displays set-point and actual temperature for on-the-spot assessment.
  • Design provides systems rated to deliver up to 600 watts.
  • Enhances the instrument's versatility.

  • Control : Uni-polar or Bi-polar, constant current, PID with Auto-tuning. User can select P, or P&I control only.
  • Compliance Voltage : 15 VDC
  • Maximum Output Current : Up to 20 amperes Standard Maximums: 4, 8, 12, or 20 amperes.
  • Maximum Output Power for Controllers : Up to 600 watts Standard Maximums: 60W, 120W, 180W, 240W, 300W, 480W, and 600W
  • Temperature Sensors : 100 ohm RTD, Types E, J, K, N, and T thermocouples, thermistor, AD590/AD592, and LM35/LM135/LM335 as well as external voltage and current inputs
  • Range of Sensor : RTD's thermocouples, thermistors (0 to 100 kohm and 0 to Megohm), and active sensors AD590/AD592, and LM35/LM135/LM335 (-50ºC to 150ºC typical) Higher and lower temperatures can be measured depending upon the sensor type. Please comtact the factory.
  • Long Term Stability : > 0.002ºC
  • Noise and Ripple : > 1 mA
  • Front Panel Displays : Front Panel Displays
  • Display : Thermoelectric Cooler temperature and set-point temperature in ºC or ºF (user selectable) with an RTD, thermocouple, AD590/592 and LM35/135/335. For a thermistor, the display is in Kohms.
  • Display Resolution : Thermistor 100 Kohm Range, 0 to 99.99k or 10 ohms 1 Megohm range, 0 to 999.9k or 100 ohms For other sensors, such as RTDs, thermocouples, AD50/592 and LM35/135/335 sensors, the resolution is 0.1ºC
  • AC Power : 115/230 VAC, Internally selectable, 47 – 63 Hz.
  • Internal Cooling : Up to two (2) fans
  • Weight : 18 pounds (8.165 kg) maximum
  • Controller Dimensions : 5.25 in. (133.35 mm) Height 19 in. (482.60 mm) Width 15.9 in. (403.86 mm) Length (3U chassis height) Note: All dimensions are without optional equipment
  • I/O Connections : Thermoelectric Cooler, Temperature Sensor, AC Power, optional EIA/RS-232/485 (using MODBUS protocol¹) and GPIB
  • ¹MODBUS is a registered trademark of Modicon, Inc., Industrial Automation Systems.
  • Operating Temperature : 0º to 50ºC (32º to 122ºF)
  • Warranty : Two years

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