Z Nitrogen Dioxide Monitor

  • Meets OSHA Accuracy Requirements

  • Computes Time Weighted Average

  • Display's Short Term Exposure Limit

  • Battery status LED

  • Data Logging Available


The Z-1400 Nitrogen Dioxide Meter is a hand held instrument which measures nitrogen dioxide concentration, in air, with a range of 0-100 ppm and a resolution of 0.5 ppm. The instrument has an LCD display giving concentrations in ppm every 10 seconds. A 15-minute average (STEL), and hourly average can also be displayed, at any time. The meter also features a low battery indicator and an audible alarm, which can be set at any level from 0-100 ppm.


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 nitrogen dioxide 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
Alarm
Dimensions

Weight
Power Source

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

<10 Seconds
15-90% non-condensing
<2% signal loss/month
2% of signal
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 nitrogen dioxide. This table shows the typical response expected when the meter is exposed to a given gas concentration. Care needs to be exercised about using this instrument in the presence of large concentrations of interfering gases. Contact the manufacturer if difficulties are suspected with interfering gases or with other usage problems.



CROSS SENSITIVITY DATA
Gas
Actual
Concentration (ppm)
Z-1400
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