3700 High-Power Thermoelectric Temperature Controller0 pages

High-Power Temperature Controller
MODEL 3700 – 336W BIPOLAR OUTPUT

The Model 3700 Temperature Controller provides a 336 W bipolar output for operation
with thermoelectric (TE) coolers. At the unit's heart, DSP based controls allow for PID
settings with fast settling times. This feature combined with sound electronics design
and quality components results in great temperature stability and higher reliability.
Computer interface is possible via a USB terminal. LabVIEW drivers are included with
the computer interface as a standard feature.
All pertinent TE cooler parameters ITE, VTE, temperature sensor (°C, R, Amp, or Volts)
are measured and simultaneously presented on the four line alphanumeric LCD display.
All standard temperature sensors including thermistors, platinum RTD, AD590/592 and
LM335 IC sensors are supported without the need for additional interface units. Sensor
calibration constants are easily programmed for direct readout in °C.
PID control is implemented in the Model 3700 that meets all the temperature
stabilization requirements for laser diode users.

The 3700 Advantage
• 14 A/24 V, low noise, bipolar output
• Extremely stable, long term drift <0.002°C
• Multiple sensors supported: thermistors, RTD, AD590/592, and
LM335
• Complete characterization of TE cooler (ITE and VTE) versus
temperature

During operation, the front panel controls can be disabled to prevent any changes in the
output by accidental misadjustment of the control knob.
Protection features include: ITE Limit, Hi and Lo Temperature Limits, Voltage Limits,
Sensor Open and TE Open Detection. To prevent noise pickup, either by the output lines
or the sensor inputs — resulting in undesirable temperature oscillations — shielded
cables are also available.

• Automatic power management and failsafe shutdown

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