PID Analyzers - Model 312
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Model 312 Portable GC
- Features flame ionization and flame photometric detectors with flameout sensors that shut off the hydrogen if the flame goes out
- Includes a 7-inch colour touch screen
- Low and high set-points (depends on the options) can be custom programmed for each point and/pr compound.
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Features of Model 312
- PID Lamps: Our 9.5 and 10.6 eV lamps remain the best in the business since we developed them over 30 years ago.
- FID: Our very sensitive FID has flameout sensor that will shut off the hydrogen if the flame goes out
- FPD: Our very sensitive FPD has flameout sensor that will shut off the hydrogen if the flame goes out
- Display: Our 7'' Color VGA display (640 x 480 resolution) is easy to read. The display is a touch screen
- PC: Embedded Pentium Computer with > 1 GByte of RAM; data storage on 1 Gbyte USB memory stick
- Operating system: Windows XP® embedded stored on 2.5 GByte smart card (the PeakWorks program and all data are on the memory stick
- Peak Detection & System Operation: Controlled by our 32-bit PeakWorks software program with more than 20 years of development
- ADC: Our 16 bit ADCs provide a resolution of 1 part in 64,000 and our signal algorithm minimizes noise by signal averaging in the msec range; the ADC can acquire positive or negative signals
- Autoranging: The 312 has 3 ranges with computer controlled autoranging- x1, x 10, x 100
- Autozero: Beginning of each run
- Programmable Voltage/current output: 0-1VDC
- Digital outputs: USB connection
- Battery life: 3-4 hours; can operate off cigarette lighter adapter
- Carrier gas: 50 liters at 1500 PSI; typical capillary column 15-20 cc/min; typical packed column 30-40 cc/min
General Specifications
| Detector | Photoionization detector (PID), Flame ionization detector (FID), Thermal conductivity detector (TCD), Flame photometric detector (FPD), Far UV absorbance (FUV) detector, Catalytic combustion detector (CCD) |
| Power Requirements | 115 VAC, 0.5 amps (12 VDC 5 amps) |
| GC System Type | Micro |
| Weight | 27.5 lbs Fiberglass case |
Additional Specifications
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
Dimensions:
enclosure - 18.75''x 13.75'' x +7.5''
Instrument operating conditions:
5-40 degrees C, 0-95% RH (non-condensing)