5383 Pulsed Flame Photometric Detector (PFPD)

The Model 5383 Pulsed Flame Photometric Detector (PFPD) uses superior sensitivity and increased selectivity to easily and accurately analyze sulfur, phosphorus, and 26 other elements.


The superior sensitivity of the 5383 PFPD makes it the instrument of choice for the analysis of sulfur, phosphorus, and other elements. Its linear, equimolar response to sulfur allows selective measurement of individual sulfur species from low ppb to ppm levels, and total sulfur as the sum of individual peaks. The unique capability to obtain simultaneous sulfur and hydrocarbon chromatograms from a single PFPD detector sets it apart from other sulfur detection technologies.

Widely used in laboratory and process gas chromatographs to analyze sulfur species and total sulfur levels in liquid-phase petrochemicals, you will also find the Model 5383 hard at work analyzing organophosphorus pesticides, pharmaceuticals, flavor and fragrances, beverage-grade CO2, chemical warfare agents, and more.

Model 5383 PFPD Features

  • Linear, equimolar response for quick, easy calibrations
  • Simultaneous mutually selective chromatograms (e.g., S+C, or S+P)
  • Self-cleaning design eliminates soot formation, or “coking”
  • New, modular design with separate electronics and flow modules
  • Better long-term stability and less maintenance than other S-selective detectors, such as SCD/XRF – Uses less gas than SCDs
​​Sulfur <1 pg S/sec
Phosphorus <100 fg P/sec


Sulfur Signal-to-Noise >300 (at 10 pg S/sec elution rate peakto-peak noise)
Drift (S or P) <10x peak-to-peak noise in 20 min
Selectivity (at Optimum Detectivity Levels)  
Sulfur >106 S/C
Phosphorus > 105 P/C (selectivity is adjustable with a trade-off in detectivity)
Detector Linearity  
Sulfur Quadratic in response. Linear to approximately 2.4 orders of magnitude. Detector (nonlinear) dynamic range ~3 orders of magnitude.
Phosphorus First order linear over approximately 5 orders of magnitude.
Response Uniformity​ Equimolor ±8% (S, P)
Chromatographic Peak Tailing <0.2 sec in S and P


Gas Requirements  
Carrier He or H2 at 40 psig; 99.8% purity or better
Air 40 psig; zero air (CGA grade E)
Hydrogen​ 40 psig; 99.995% purity or better (electrolytic grade)
Power Requirements 115/230 VAC


Computer Requirements  
Operating System Windows® 7, 8 and 10
Communication Ports USB (1)
Minimum Temperature  180 °C
Maximum Temperature 420 °C
Carrier Gas 5 mL/min maximum flow rate helium; up to 10 mL/min using H2 carrier gas


Typical Gas Consumption  
H2 10–15 mL/min
Air 20–30 mL/min
Humidity​ 5–80% relative humidity
Altitude 2,000 m maximum


Safety/EMI Certifications  
RoHS Directive 2011/65/EU
EMC Directive 2004/108/EC
EN 61326-1:2013
CISPR 11:2009 and A1:2010
Safety​ LVD 2006/95/EC
EN 61010-1:2010 3rd


Controller Board Inputs and Outputs  
Two Channels (to GC) 0-1 V
One Serial RS-485
One Signal In​ Electrometer; PFPD
High Voltage Out PMT 0-1,000 V
Ignitor Current 0-3.4 A
S/W HV Protection PMT Protection
Timed Events (from GC Remote Start) Autozero, range, attenuation, ignitor, mode or channel (e.g. S, P, C), and record
Controller Dimensions 17.5 cm H x 6 cm W x 25 cm D
(6.9" H x 2.4" W x 9.9" D)
Pneumatics Module Dimensions 17.5 cm H x 6 cm W x 27.5 cm D
(6.9" H x 2.4" W x 10.3" H)
Pneumatic Control  EPC-Ready Control utilizes GC electronic flow control of detector gases or manual flow control of detector gases with mass flow controllers and metering valve