A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the NEWPORT 325B Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

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   NEWPORT 325B   Description / Specification:    
NEWPORT 325B 2.5 A / 7 V Temperature Controller

The Newport 325B Temperature Controller precisely controls the temperature of a thermo-electric (TE) cooler in a closed loop system using a variety of possible temperature sensors as the feedback. Three operating modes are user selectable: constant R (thermistor), constant T (IC sensors), or constant ITE (TE cooler), while delivering high output power. Specifications. Output Type: Bipolar, constant current source. TEC Control Loop Type: Hybrid P-I-D. Maximum Current: ±2.5 A. Compliance Voltage: 7 V. Available Output Power: 17.5 W. Accuracy: ±5 mA. Resolution: 0.042 mA. Ripple/Noise (rms): <0.03 mA. Current Limit Range: 0 to 2.52 A. Resolution: ±5 mA. Accuracy: 0.042 mA. Short-Term Stability (1 h): 0.001°C. Long-Term Stability (24 h): 0.005°C. Display Range Temperature (°C): -50.0 to +150.0°C. Display Range Resistance (10 µA): 0.1 to 200.0 k-ohm. Display Range Resistance (100 µA): 0.01 to 20.00 k-ohm. Display Range TE Current: -2.50 to +2.50 A. Resolution Temperature: 0.1°C. Resolution Resistance (10 µA): 100 ohm. Resolution Resistance: (100 µA): 10 ohm. Resolution TE Current: 10 mA. Accuracy Temperature: ±0.1°C. Accuracy Resistance (10 µA): ±100 ohm. Accuracy Resistance (100 µA): ±10 ohm. Accuracy TE Current: ±10.


Standard Calibration $265.00 *
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*This is a Web introductory price for one calibration of the NEWPORT 325B. Price does not in most cases include measurement performance data. Pricing does include NIST traceable calibration and issue of a calibration certificate and calibration label. Pricing may vary slightly due to volume and location of laboratory supporting calibration. Volume pricing may apply. On-site fees may apply depending on logistics, location and volume of work to be completed during the visit.

Related Optical Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

Bit Error Ratio (BER)
Bit Error Ratio (BER) is the ratio of errors caused by the number of bits in a data stream that have been altered due to noise, interference, distoriton or bit synchronization errors.

Variation of insertion loss on the passband of an optical device.

Polarization Dependent Loss (PDL)
Polarization Dependent Loss is the difference between the maximum and minimum values of loss due to the variation of the polarization states of light propagating through a device. PDL is expressed in decibels. Calculated by; PDL = 10 log10 (Ep/Es), where EP and ES are the measured diffraction efficiencies for P- and S-plane polarized incident light, respectively.

Return Loss (RL)
Return Loss (RL) is the ratio of the incident power to the reflected power expressed in dB. RL = 10log (Pin/Pback)

Wavelength Resolution
Wavelength Resolution is the smallest possible displayed wavelength increment/decrement.

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