How many sensors can I use on the monitor at once?
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You can only connect one gas or particulate sensor head at a time to monitor. However, you are able to connect the optional temperature and humidity sensor at the same time as a gas or particulate sensor head.
Can I use the PM sensor head with any portable monitor?
The PM sensor is compatible with Series 200/300/500 monitors with software version 6.4 introduced in November .
What is the PPM to mg/m³ conversion factor?
PPM is an absolute measurement, whilst mg/m3 varies depending upon pressure and temperature. The portable monitor measures in PPM and applies a conversion factor if you wish to measure in mg/m3.
NH3 - 0.76, CO - 1.25, CO2 - 1.96, CL2 - 3.16, CH2O - 1.34, H2 - 0.082, CH4 - 0.72, H2S - 1.52, NO2 - 2.05, NMHC - 2.5, O3 - 2.14, C2CL4 - 6.78, SO2 - 2.86, VOC - 2.5, PM - N/A*
*as particulate matter varies in size, unlike a gas molecule, PPM is not a valid unit of measurement
Do I return the instrument for calibration?
Only the sensor head needs to be calibrated. The base unit does not need to be calibrated. All parameters are stored on the sensor head.
The sensor head calibration should be completed after the first year. Aeroqual does not recommend a second factory calibration, but rather replacement after two years of operation.
See a range of frequently asked questions on calibration here.
How long can I log data for (Series 500 only)?
The Series 500 handheld unit can store a limited number of data points (), meaning that the length of time that data can be logged depends upon the frequency and number of data points recorded. For example:
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If you are logging every minute for one gas (i.e. one data point per minute) you can log for minutes.
If you are logging every minute for one gas, temperature and humidity (i.e. 3 data points per minute) you can log for minutes.
Decrease the logging frequency for the ability to log over a longer timeframe.
Note: Once capacity is reached new data will begin to overwrite the oldest logged data.
What communication options does the portable monitor have?
S200: None
S300: 0-5V Analog output (current reading only)
S500: 0-5V Analog output (current reading only), RS232 (current, logged data and instrument control) to PC software via USB adapter. RS232 protocol available upon request for third party software integration.
What is the &#;Control&#; function (Series 300 & 500 only)?
This is designed to control generation of a gas such as ozone from an ozone generator. The control pin can be wired to control a gas concentration between upper and lower concentration limits. The upper and lower limits can be set by the user via this control function.
Refer to the relevant section of the user guide for wiring instructions.
What accessories are available for the portable monitors?
Aeroqual offers a range of accessories to suit your application. See the range here.
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