Environmental Sensors Company

- Model Z-1100 - Hand Held Oxygen Monitor



Environmental Sensors Co.'s Meter is a hand held instrument that measures concentration in a range of ppm and a resolution of ppm. The instrument makes it possible to monitor vapor in air. The insturment has an LCD display giving concentrations in ppm, a low battery indicator, and an audible alarm that can be set at any level from ppm. With the touch of a button, the meter displays STEL (average of every 15 min.), TWA (8 hour average) and Peak.

  • Compact and Light Weight
  • Simple to use
  • TWA, STEL and Peak
  • Adjustable Alarm
  • Data Logging Available (Model: ZDL-)

The ZDL--00 --- data logging meter stores all of the exposure points for up to 5 logs (a log is created in the instrument's internal memory each time it is used). A log contains: date, time, number of exposure points, the interval between each point, and the actual exposure points. All of the log files can be easily uploaded to PC using components vailable within the Microsoft Windows Operation System or the termianl software included with the instrument.

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 the target gas in air.

  • Nominal Range: 0-25%
  • Maximum: 30 %
  • Sensor Life: > 2 years
  • Resolution: 0.1 %
  • Min. Detectable: 0.1 %
  • Response Time: < 15 sec.
  • Warm-Up Time: 60 sec.
  • Operating Temperature: -20 °C to 50 °C
  • Pressure Range: Atm ± 10%
  • Relative Humidity: 15 - 90 % non-condensing
  • Alarm: Audible 80db
  • Dimensions: H x D x W: 4.75' x 2.5' x 1.5'
  • Weight: 170 grams
  • Battery: 9 Volt Alkaline Battery
  • Warranty: One Year

Output Linearity

The output signal of the Z-1100 sensor is shown below, in comarison to the actual concentration. The sensor used is calibrated in air (20.9% oxygen). Calibration can be peformed by using a span adjustment screw prior to each use. The maximum error range is about 0.5%.

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