312 Portable GC

 

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- auto zero 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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Features

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 flame out sensor that will shut off the hydrogen if the flame goes out

FPD

Our very sensitive FPD has flame out 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 G byte USB memory stick
Operating system
Windows XP® embedded stored on 2.5 GByte smart card (the Peak Works program and all data are on the memory stick

Peak Detection & System Operation:

Controlled by 32 bit Peak Works 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

Auto ranging

The 312 has 3 ranges with computer controlled auto ranging- x1, x 10, x 100

Auto zero

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
Oven

Size:

Typical column diameter: 3.5''

Temperature range:

Battery: 25-50 Degrees Celsius

External power:

25-100 Degrees Celsius

Programmable setpoints

The low and high set points (depends on the options) can be customer programmed for each point and/or compound

 

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