MultiFrequency Phase Fluorometer

Used with Ocean Optics Fiber Optic Oxygen Sensors and custom probes, the MultiFrequency Phase Fluorometer (MFPF), manufactured by TauTheta, is a flexible platform for measurement of luminescence lifetime, phase and intensity. This compact, self-contained frequency-domain luminescence monitor uses LED excitation and avalanche photodiode detection with filter-based wavelength selection for easy experimental set-up and control.

Perfect System for O2 Sensing

The MFPF is especially useful for oxygen sensing applications where sensitivity to drift is important and where sample set-ups must be undisturbed for long periods of time. Because it utilizes phase-shift technology, it is invariant to fiber bending and stray light and has a wide dynamic range of optical intensity as well as low optical and electronic crosstalk, and low drift and phase noise. Auxiliary pressure and temperature measurements make the MultiFrequency Phase Fluorometer an ideal choice for luminescence sensor design, testing and calibration.

Application Flexibility

Configuration Options

The MFPF can be configured with two-channel LED excitation and detection and modulation frequencies to 100 kHz. This configuration will give you lifetime measurements from 200 µsec down to 0.3 µsec. The on-board pressure transducer measures atmospheric pressure or external pressure with an optional hose fitting. The single-channel MFPF100-1 comes complete with one thermistor, and the two-channel MFPF100-2 includes two thermistors. The thermistor option allows temperature logging, calibration and temperature correction.

USB Connection for Easy Startup

The MultiFrequency Phase Fluorometer can connect to your PC via an RS-232 or USB connection and saves your data in an easy-to-use Excel- compatible CSV format.

MFPF100 Specifications

Specifications

LED modulation range:

2 kHz to 100 kHz (200 µsec to 0.3 µsec)

Parameters measured:

Luminescence phase shift, AC luminescence intensity, temperature (optional through external thermistors), pressure (via on-board pressure transducer)

Control software:

Windows 2000/XP control software with data logging capability; controls include: modulation frequency, data rate, LED duty cycle, signal averaging, APD gain, analog gain, LED intensity

Measurement modes:

Intermittent LED (to minimize photodegradation); Continuous LED (for rapid measuring and accelerating photo-bleaching); Frequency sweep for luminescence characterization

Thermistor probes:

Closed end stainless steel tube with thermistor sensor mounted in tip; liquid immersible rugged design; 1/8” NPT fitting; temperature range 0 to 75 °C, absolute maximum 100 °C +/- 0.2 °C; Interchangeable thermistors

Pressure measurement:

On-board pressure transducer monitors atmospheric pressure, optional configuration allows external connection for 0 to 15 psiA

Power, input:

6v - 12v, 1.5 Amps

Communications:

USB or RS-232

Pricing

MFPF100-1

$5000

MFPF100-2

$7500