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Model 312 Portable GC

1st April 2013


Detectors: Photoionization detector (PID), Flame ionization detector (FID), Thermal conductivity detector (TCD), Flame photometric detector (FPD), Far UV absorbance (FUV) detector, Catalytic combustion detector (CCD)

Species measured: PID & FID: Organics (VOCs by PID or FID) and inorganic species (H2S, NH3, AsH3... ) that can be ionized by the PID lamp (9.5, 10.6 or 11.7 eV) TCD: Universal detector- fixed gases (O2, N2, CO...), organic and inorganic compounds, very sensitive for H2, He, Xe FPD: Selective response for S or P compounds Far UV: Nearly universal response for organic and inorganic compounds CCD: Combustible compounds such as hydrocarbons

Detection Limit:

PID- 0.5 ppb benzene FID- 50 ppb benzene TCD- H2- 10 ppm; O2 150 ppm

Linear Dynamic Range: PID- 108 FID- 2 x 106 TCD- 2 x 104 FPD- S- 103; P 105 Far UV- 106 CCD- 5 x 104

Sensor(s): 1 or 2 detectors

Precision: +/- 1-2% of reading

Response time: : Depends on retention times

Sample flow rate: > 0.5 LPM

Injection: On-column syringe injection or automatic with 6 port gas valve (optional)

Span Drift: <1% over 24 hours

Zero Drift: NA- autozero on each run

Power consumption: < 50 watts maximum; 115 VAC, 0.5 amps (12 VDC 5 amps???) Dimensions: enclosure - 18.75''x 13.75'' x +7.5''

Weight: Fiberglass case - 27.5 pounds

Instrument operating conditions: 5-40 degrees C, 0-95% RH (non-condensing)





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