Easy to Use Internal Pump Rechargable Battery Short and Long Term Averaging Internal Memory (Data Logging)

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The Z-800XP Ammonia Monitor is a portable desktop instrument which measures ammonia concentration in air with a resolution of 0.1 ppm and a range 0-50 ppm. The LCD display outputs the concentration (in ppm) every 10 seconds. The instrument also computes a 15-minute average and a Time Weighted Average (updated hourly for up to 8 hours). These values can be viewed anytime during the measurement procedure. The internal pump can be combined with an extendable probe, for sampling from hard to reach areas.

With the data-logging feature enabled, the meter will store all of the exposure points for each use. The maximum storage capacity is 14,400 data points. This is the equivalent of 5 separate 8-hour uses. The data is easily uploaded to PC using components available within the Microsoft Windows Operating System or the terminal software included with the instrument.

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The sensing element of the instrument is an electrochemical cell. The cell is a four-electrode type, which contains a working and an active auxiliary electrode. The signal from the auxiliary electrode is used for temperature compensation. This improves the selectivity of the entire sensor. The sensors response is linear with the concentration of ammonia in air.

PERFORMANCE DATA
Sensor Nominal Range Maximum PPM Resolution Response Time     (90% Peak) Repeatability Sensitivity Loss Operating Temperature Pressure Range Relative Humidity Dimensions Weight Power Source Battery Life Sensor Life	Electrochemical 0-50 ppm 200 ppm 0.1 ppm <90 Seconds 5% of output <4% per month 0-40°C Atmospheric ±10% 15-90% non-condensing HxDxW 7.5"x5.75"x2.75" 900 gms Internal Rechargable Battery or AC Adapter 9 hours (operating time) 2+ years

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Some representative examples of the common compounds and the corresponding signals they give are shown below. Care needs to be exercised if using this instrument in the presence of large concentrations of these gases.

CROSS SENSITIVITY DATA
Gas	Actual Concentration	Z-800XP Output
Carbon Monoxide Hydrogen Sulfide Sulphur Dioxide Nitric Oxide Nitrogen Dioxide Chlorine Hydrogen Hydrogen Cyanide Hydrogen Chloride Ethylene	300 15 5 35 5 1 10 5 45 100	0 15 3 7 0 -0.5 0 0.5 0 0