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

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Environmental Sensors Company’s Z-700XP is a portable desktop instrument which features an internal pump. Nitric Oxide concentrations in air can be measured with a resolution of 1 ppm and a range 0-100 ppm. The LCD display updates 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, to make it possible to sample from hard to reach areas or confined spaces.

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 and to improve the selectivity of the entire sensor. The sensor response is linear with the concentration of nitric oxide in air.

PERFORMANCE DATA
Sensor Nominal Range Max Range Resolution Response Time     (90% Peak) Repeatebility Sensitivity Loss Operating Temperature Pressure Range Relative Humidity Dimensions Weight Power Source Battery Life Sensor Life	Electrochemical 0-100 PPM 1500 PPM 0.1 PPM <10 Seconds 5% of output <2% per month -20-40°C Atmospheric ±10% 15-90% non-condensing HxDxW 7.5"x5.75"x2.75" 900 gms Internal Rechargeable 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. For example, the output from the Z-700 is 0 ppm when exposed to 300 ppm carbon monoxide in air. Care needs to be exercised about using this instrument in the presence of large concentrations of these gases.