The APHA-370 continuously monitors atmospheric THC, NMHC, and CH4 concentrations using a cross-flow modulated selective combustion type method combined with a hydrogen ion detection method. The APHA-370 employs an independent, internal dry-method sampling device to achieve the highest levels of sensitivity and accuracy.
• Flame ionization detector with selective combustion simultaneously measures THC, NMHC, and CH4.
• Single detector eliminates zero drift; Low range: 0-5 ppmC F.S.
• Integrates relative sensitivity correction for CH4 and NMHC.
• Integrates a reference and combustion air generator, NMHC cutter and sample pump.
• Requires H2 as fuel gas for the FID.
Principle | Flame ionization detection (FID) with selective combustion |
Application | THC, NMHC, and CH4 in ambient air |
Range | Standard ranges: 0-5/10/20/50 ppmC; auto range ~ manual range selectable; can be operated by remote switching. |
Repeatability | ±1.0% of F.S. |
Linearity | ±1.0% of F.S. |
Sample gas flow rate | Approx. 0.9 L/min |
Indication | Measured value, range, alarm, maintenance screen |
Alarms | During AIC, zero calibration error, span calibration error, temperature error in zero gas purifier, ignition failure error, etc. |
On-screen messages are available in four languages | English, German, French, and Japanese |
Input/output | • 0-1 V/0-10 V/4-20 mA, to be specified (2 systems: either (1) momentary value and integrated or (2) moving average value) |
Power | 100/110/115/120/220/230/240 VAC, 50/60 Hz (to be specified) |
Dimensions | 430(W) x 550(D) x 221(H) mm |
Mass | Approx. 33 kg |
Notes | ppmC is shown as symbol, not as unit. |
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