Ethylene Oxide Z Meter JPG

  • Meets OSHA Accuracy Requirements

  • Computes Time Weighted Average (TWA)

  • Display's Short Term Exposure Limit (STEL)

  • Battery status LED

  • Data Logging Available


The Z-1300 Sulfur Dioxide Meter is a hand held instrument that measures sulfur dioxide concentration in air with a range of 0-20 ppm and a resolution of 0.1 ppm. The instrument makes it possible to monitor sulfur dioxide concentration in air. The instrument has an LCD display giving concentrations in ppm every 10 seconds. A 15 minute average (STEL) or hourly average can also be viewed at any time. The meter also features a low battery indicator and an audible alarm. The alarm can be set at any level from 0-20 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. This improves the selectivity of the entire sensor. The sensors response is linear with the concentration of sulfur dioxide in air.


PERFORMANCE DATA
Sensor
Nominal Range
Maximum PPM
Resolution
Temperature Range
Pressure Range
Response Time
   (90% Peak)
Relative Humidity Range
Maximum Zero Shift
(-20°C to 50°C)
Long Term Output Drift
Repeatability
Alarm
Dimensions (HxDxW)
Weight
Power Source
Battery Life
Sensor Life
Electro chemical
0.00-2.00 ppm
5 ppm
0.02 ppm
-20°C to 50°C
Atmospheric ±10%

<150 Seconds
15-90% Non Condensing

36 ppb
<4% signal loss/year
5% of signal
Audible, 80db at 10 cm
4.75"x2.5"x1.5"
170 gms
9-V Alkaline Battery
240 hours
2+ years


This sensor may respond to certain gases in addition to sulfur dioxide. This table shows the typical response expected when the meter is exposed to a given gas concentration. Care needs to be exercised when 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-1200
Output (ppm)
Carbon Monoxide
Hydrogen Sulfide
Sulphur Dioxide
Nitric Oxide
Nitrogen Dioxide
Chlorine
Hydrogen
Hydrogen Cyanide
Hydrogen Chloride
Ethylene
300
15
5
35
5
1
100
10
5
100
0
-2
0
0
3.5
0.5-1
0
0
0
0