Z Nitric Oxide Monitor

  • Meets OSHA Accuracy Requirments

  • Computes Time Weighted Average (TWA)

  • Displays Short Term Exposure Limit (STEL)

  • Battery status LED

  • Data Logging Available


The Z-700 Nitric Oxide Meter is a hand held instrument which measures nitric oxide concentration, in air, with a range of 0-100 ppm and a resolution of 0.5 ppm. The instrument features an LCD display, a low battery indicator, and an audible alarm, which can be set at any level, within range of the sensor. The LCD display outputs the current nitric oxide concentration, in ppm, every ten seconds. Peak, STEL (15 minute average), and TWA (an 8 hour average) values can also be viewed at any time.


The sensing element of the instrument is an electro-chemical 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
Maximum PPM
Resolution
Temperature Range
Pressure Range
Response Time
(90% Peak)
Relative Humidity Range
Long Term Output Drift
Repeatability
Output Linearity
Alarm
Dimensions

Weight
Power Source

Battery Life
Sensor Life
Electrochemical
0 - 100 ppm
1500 ppm
1 ppm
-20°C to +50°C
Atmospheric ±10%

<15 Seconds
15-90% non-condensing
<2% signal loss/month
2% of signal
Linear
Audible, 80db at 10 cm
HxDxW
4.75"x2.5"x1.5"
170 gms
9-V Alkaline Battery or
Optional AC Adapter
240 hours
2+ years

This sensor may respond to certain gases in addition to nitric oxide. This table shows the typical response expected, when the meter is exposed to a given gas concentration. Care needs to be exercised if using this instrument in the presence of large concentrations of these gases. Contact the manufacturer if difficulties are suspected with interfering gases or with other usage problems.



CROSS SENSITIVITY DATA
Gas
Actual
Concentration (ppm)
Z-700
Display (ppm)
Carbon Monoxide
Hydrogen Sulfide
Sulphur Dioxide
Nitrogen Dioxide
Nitrous Oxide
Chlorine
Hydrogen
Hydrogen Cyanide
Hydrogen Chloride
Ethylene
300
15
5
5
100
1
100
10
5
100
0
5
0
<1.5
0
0
0
0
<1
0