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3700 Series High-Power Thermoelectric Temperature Controller

3700 Series

High-Power Thermoelectric Temperature Controller

14 A/24 V, low noise, bipolar output
Extremely stable, long term drift <0.002°C
User interface software and drivers are compatible with Windows XP and Windows 7, 32 bit and 64 bit machines
Multiple sensors supported: thermistors, RTD, AD590/592, and LM335
Complete characterization of TE cooler (I_TE and V_TE) versus temperature
Automatic power management and failsafe shutdown

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Overview
Features
Specifications
Ordering
Literature & Downloads
Related Products

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.

When it comes to selecting a laser diode mount and diode driver to go along with your new temperature controller Newport does all the work for you. Our newly introduced laser diode control kit (LDKIT series) bundles the diode driver, temperature controller, mount, cables, grounding wriststrap and thermal paste compound all at a great price.

The LDKIT-80A-110W includes 5700-80-7 driver, 3700 temperature controller, 764H-110 mount, cables, thermal paste and grounding wriststrap. Laser diode not included.

Related Products

(Detectors, posts, and post holders sold separately) A Benchtop Power Meter for a complete LIV measurement capability (Optical Power and Energy Meters, 1936-C/R and 2936-C/R )

PID control is implemented in the Model 3700 that meets all the temperature stabilization requirements for laser diode users. 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.

Fig. 1

Fig. 2 One hour temperature stability measurements performed in a typical lab environment, on a Newport laser Mount 764H-110 with an Oclaro BW-series laser running at 10W optical output power.

Fig. 1 graph displays ambient temperature variations during the test period of the order of 2ºC. The Laser mount temperature was set at 21ºC for the entire test over a 1 hour period.

Fig. 2 graph shows the laser mount temperature to be stable at 21ºC with a variation of ± 0.0004ºC over the 1 hour period.

Fig. 3

Fig. 4 Fig. 3 shows 24 hour temperature stability measurements performed in a typical lab environment, on a Newport Laser Mount 764H-110 with an Oclaro BW-series laser running at 10W optical output power. Graph displays ambient temperature variations during the test period of the order of 3ºC. The laser mount temperature was set to 21ºC for the entire test over a 24 hour period.

Fig. 4 shows the laser mount temperature to be stable at 21ºC with a variation of ± 0.00077ºC over the 24 hour period.

Fig. 5 Fig. 5 Innovative hardware and firmware design allows 3700 to output 14A over the full compliance range (0-24V). Compare this with our competitors’ controllers output capability shown in bottom graph of figure 5.

Specifications

TEC Output
Type	Bipolar, Low Noise
TEC Output Current, Max.	±14 A
Output Power (W)	336
I_TE Current Resolution (mA) (manual/remote) ⁽¹⁾	1/0.1
I_TE Current Accuracy	± 0.3%
TEC Ripple/Noise (rms) (mA)⁽²⁾	<1
Current Limit
TEC Output Range (A)	0–14
I_TE Current Resolution (mA)	1/0.1
Accuracy (%)	± 0.3
Stability
TEC Short-Term Stability (1 h) (°C)	0.0009
TEC Output Long-Term Stability (24 h) (°C)	0.0019
Temperature Coefficient (°C/°C)	< 0.0005
TEC Measurement Display
Temperature Range (°C)	-100.00 to + 250.00
Display Range Resistance (1 µA) (kΩ)	0.1 to 2500.0
Display Range Resistance (10 µA) (kΩ)	0.01 to 250.00
Display Range Resistance (100 µA) (kΩ)	0.001 to 25.000
Display Range Resistance (1 mA) (kΩ)	0.0001 to 2.5000
Display Range Resistance (10 mA) (kΩ)	0.1 to 250.0
Range Resistance (RTD) (Ω)	20-192
Range TE Voltage (V)	-24.000 to + 24.000
TE Current (A)	-14.00 to +14.00
Range AD590 Current (µA)	248.15–378.15
Range LM335 Voltage (mV)	2331-3731
Display Resolution
Temperature (°C)	0.001
Display Resolution Resistance (1 µA) (kΩ)	0.1
Display Resolution Resistance (10 µA) (kΩ)	0.01
Display Resolution Resistance (100 µA) (kΩ)	0.001
Display Resolution Resistance (1 mA) (kΩ)	0.0001
Display Resolution Resistance (10 mA) (kΩ)	0.0001
Resolution Resistance (RTD) (Ω)	0.001
Resolution TE Voltage (mV)	1
TE Current (mA)	1
Resolution AD590 Current (µA)	0.01
Resolution LM335 Voltage (mV)	0.1
Display Accuracy
Temperature (°C)⁽³⁾	± 0.001
Display Accuracy Resistance (1 µA)	± 0.02%
Display Accuracy Resistance (10 µA)	± 0.01%
Display Accuracy Resistance (100 µA)	± 0.01%
Display Accuracy Resistance (1 mA)	± 0.01%
Display Accuracy Resistance (10 mA)	± 0.01%
Accuracy Resistance (RTD)	± 0.01%
Accuracy TE Voltage (%)	0.35
TE Current	0.35
Accuracy AD590 Current	± 0.01%
Accuracy LM335 Voltage	± 0.01%

Auxiliary Temperature Sensor⁽⁴⁾

Temperature Range [°C]	0 to +80.00
Temperature Resolution [°C]	0.0001
Resistance Range [kΩ] at 100 µA	0.1 to 25.0
Temperature Accuracy [°C]⁽³⁾	± 0.001
Resistance Accuracy at 100 µA [%]	± 0.01

Temperature Sensors	Thermistor (NTC 2-wire )	AD590	LM335	RTD (100)
Temp. Sensor Control Resolution (°C)	0.0001
Temp. Sensor Control Accuracy (°C)⁽³⁾	± 0.0001	± 0.03	± 0.03	± 0.001
Sensor Bias Current (mA)	0.001, 0.01, 0.1, 1, 10	-	1	1
Sensor Bias Voltage (V)	-	+4	-	-

Specifications

LCD Display
	Display Type	4-line by 20 character alphanumerical, and seven segment display
	Display Backlighting	Green LED
	Display Controls	Brightness, contrast (optimizes viewing angle)
Chassis Ground		4 mm banana jack
Power Requirements		100-240 VAC, 50/60 Hz universal input
Maximum Power Consumption (W)		500
Size (H x W x D) [in. (mm)]		3.47 (88.14) x 19.00 (482.60) x 12.24 (311)
Mainframe Weight [lb (kg)]		11.2 (5.1)
Operating Temperature (°C)		0 to 40 (<90% relative humidity non-condensing)
Storage Temperature Range (°C)		-30 to + 60 (<90% relative humidity non-condensing)
I/O		15-pin female D-sub
Output Connector		7-pin, female D-Sub 7W2
USB Interface Connection		USB 2.0 Connector

⁽¹⁾ In remote mode the output current is rounded at 0.5 mA steps.
⁽²⁾ Noise and ripple measured on a 1.6 ohm resistor on the full range between -14A to +14A
⁽³⁾Temperature accuracy reflects the accuracy of temperature change measurement. This is the uncertainty that the instrument brings into the measurements and it is not a reflection of the absolute temperature measurement, which depends on the thermistor accuracy.
⁽⁴⁾Remote mode only

Temperature Controller Model

	Model	Description	avail raw	Availability	price raw	Price	Qty. MULTI ADD
	3700	High-Power Temperature Controller, ±14 A, 24 VDC, 336 W	0	In Stock	4231	$4,231.90	ADD

Accessories

Model	Description	avail raw	Availability	price raw	Price	Qty. MULTI ADD
300-16	Thermistor, 10.0 kΩ, ±0.2°C	0	In Stock	29	$29.58	ADD
300-22	Temperature Sensor, AD592CN, -45°C to +125°C Range	0	In Stock	47	$47.94	ADD
3150-02	Temperature Controller Cable, Model 3150/3700, D-Sub 7W2 Male to Bare Wire	0	In Stock	90	$90.79	ADD
3150-04	Temperature Controller Cable, Model 3150/3700, D-Sub 7W2 Male to Female	1	1 Week	100	$100.99	ADD

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	Model	Description	avail raw	Availability	price raw	Price	Qty. MULTI ADD
	764H-061	764H series High-Power Laser Diode Mounts, up to 61W thermal load	2	2 Weeks	1683	$1,683.17	ADD
	764H-110	764H series High-Power Laser Diode Mounts, up to 110W thermal load	0	In Stock	1989	$1,989.20	ADD