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Automatic calibration.

Automatic range selector.

Temperature and pressure compensation.

Easy-to-read and use interactive LCD display.

Optional Compact Flash memory card.

Reliable solid-state detector eliminates expensive photomultiplier tube.

Silica gel dryer eliminates energy-consuming thermoelectric cooler.

Built-in deozonizer eliminates need for external ozone removal equipment.

Dual, bi-directional, RS-232 communication ports (Modbus or Ethernet).

 

The APNA-370 uses a combination of the dual cross flow modulation chemiluminescence principle and the referential calculation method to continuously measure NO/NO2/NOx in ambient air. The design possesses the stability and sensitivity to provide accurate long-term measurements.

The analyzer can be operated by using the convenient interactive LCD touch-screen or a remote computer.

The standard equipment includes a dryer unit with an automatic recycle function to provide dry ambient air as the chemiluminescence ozone source for long-term continuous measurements. All necessary features are built into the unit including an optional span permeation tube, an ozone decomposer, and a sampling pump.

Data is stored internally and can be transmitted to external devices via an RS-232C serial port. Modbus and Ethernet communication are also available.  A Compact Flash memory unit is available to collect and store data for off-line analysis or retrieval.

Ranges: 0-0.1 ppm to 0-1.0 ppm; automatic or user selectable other ranges available.

Lower detection limit: 0.5 ppb

Response time: within 90 seconds at lowest range

Zero drift: <LDL/day at lowest range; ±1 ppb/week at lowest range

Span drift: <LDL/day at lowest range; ±1.5% of FS/week at lowest range

US EPA Designation: RFNA-0506-157