RKI Instruments NP-204 - Manual (Page 3)

NP-204 RKI Instruments, Inc.
INTRODUCTION
The Model NP-204 is a proven gas detection instrument, in use internationally for detection of natural
gas levels over the full range of concentrations. The NP-204 is compact, easy to use, and offers the
following features:
• Battery operated, the NP-204 can use either alkaline or Ni-Cad cells. Batteries are
easily field replaceable.
• The NP-204 detects natural gas over two ranges : 0-5% volume (or optionally 0-
100% LEL), and 0-100% volume.
• Gas levels displayed on an easy to read analog meter.
• Two sensor types are utilized: Platinum catalytic combustion sensors for low levels, and
thermal conductivity sensors for high level detection.
• Sample drawing by use of an aspirator bulb provides quick, positive sampling. A
probe and hose allow sampling from hard to reach locations.
• Ease of operation. Controls easily accessible for user operation and adjustment.
• Vinyl carrying case with shoulder strap provided.
• Extremely rugged construction assures that the instrument will provide years of
troublefree operation.
WARNING
The NP-204 is designed to detect combustible gas levels which could be life threatening. Users
must follow the instructions and warnings in this manual to assure proper and safe operation of the
instrument. Read and understand instruction manual before use.
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