Used NEWPORT 840-C Buy / Purchase at the right Price.
Custom-Cal has a used NEWPORT 840-C Handheld Optical Power Meter in stock and ready for purchase at a fair price. All units sold by Custom-Cal are provided with an applicable NIST traceable calibration/performance verification and a 90 day warranty (unless otherwise noted). With this added service, you can be confident that you are buying a fully functional unit that meets OEM specifications.

We are always willing to work with the customer on price. If you would like to buy a used NEWPORT 840-C but, don't see the price you want, please name your price below and we will try to find one for you to purchase.
NEWPORT 840-C Handheld Optical Power Meter


General description of the used NEWPORT 840-C for sale.
The Newport 840-C HandHeld Power Meter is a powerful handheld dual-microprocessor based optical power measuring instrument. It makes sensitive DC or AC Peak-to-Peak optical power measurements with the convenience of full spectrum sensor calibration, quick sensor change, and a host of user-friendly features. The Model 840-C operates with Newport’s line of optical detectors through the use of an in-line calibration module. This Cal Module supplies calibration and detector information while still allowing the detector to be detached and used with other equipment in the lab. For use in fiber optic applications, a combined detectorcalibration module provides connectorized input at the meter (Model 818-F Series modules). A backlit 4-digit liquid crystal display (LCD) permits easy reading in darkened areas. An audio indicator allows the user to maximize a signal without having to look at the display. The analog output allows other instrumentation to monitor the Model 840-C power readings by providing a voltage output proportional to detector current. The Model 840-C’s ultra low noise, thermally stable, trans-impedance input amplifier optimizes the detector sensitivity and linearity. Specifications Input Current To Power Conversion; Displayed Power Reading: Input Current (A) ÷ Detector Responsivity (A/W) P=I/R(l). Input Voltage Burden: 5µV at zero current input, 10µV max. at full range, except 100µV max on 5mA range. Input Noise: The noise performance of the meter is ±1 A-D count or better when in either the linear or peak-to-peak mode, regardless of the sensor capacitance, internal resistance or feedback ranging resistor. Input Voltage Drift: ±0.6mV/°C; ±1 mV/Mo. Source Resistance: >30 k-ohm. Source Capacitance: <14 nF (includes input cable). Setting Time: 2 seconds to within 1 digit of final reading (fast mode). Reading Rate: 2.5 readings per second typical.

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