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Service and Calibration

UltraRAE 3000 - How to Calibrate for Benzene Monitoring

UltraRAE 3000 - How to Calibrate for Benzene Monitoring

One of the main uses of the UltraRAE 3000 is to monitor for benzene. Therefore it's absolutely vital that you and your team make sure your UltraRAE 3000 is properly calibrated for this purpose.

The World Health Organisation published a document on the dangers of benzene entitled “Preventing Disease Through Healthy Environments“, which noted the following:

Human exposure to benzene has been associated with a range of acute and long-term adverse health effects and diseases, including cancer and aplastic anaemia.

The UltraRAE 3000 is one of the best monitors on the market when it comes to benzene monitoring, as you can see in our exclusive Frontline Safety TV video.

In this guide we'll take you through the simple but essential steps to calibrate the UltraRAE 3000 for benzene.

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How to Calibrate the UltraRAE 3000 for Benzene in Simple Steps

To perform the calibration you're going to need the following pieces of equipment:

  • demand flow regulator (fixed flow regulators aren't suitable for use on the UltraRAE 3000 as it already features and internal pump)
  • benzene separation tube
  • calibration gas with a concentration of 5ppm benzene and balance of air
  • calibration tubing

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Watch our exclusive video guide which will take you through the process in less than 3 minutes.

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When calibrating the UltraRAE 3000 it's important to note that it's a two-stage process: zero calibration first (read our guide here), followed by span calibration, which we'll explain below.

It's vital to perform the zero calibration in a clean - or fresh - air environment. If you're not in a fresh air environment, or you need to perform the calibration in the field, then you should use a carbon filter attached to the probe, as shown in our video above.

The zero calibration is done by accessing the calibration menu (when prompted for a passcode, it is 0000 by default), and choosing "zero cal". The unit will countdown 30 seconds as it resets the sensors.

When performing the span calibration for benzene, ensure that you select benzene as the target from the menu, and that the concentration displayed matches the concentration of the calibration gas you’ll be using. After selecting the target gas, insert the benzene separation tube into the probe.

Before inserting it be sure to use the tube breaker on the front of the pack to ensure that the gas can flow freely from one end to the other.

The gas separation tube filters out any unwanted gases, allowing the target gas to be accurately measured. It’s important to properly refit the probe, making sure it’s tightened properly.

Now attach the calibration tubing to the probe, the unit’s internal pump will draw the relevant sample from the gas cylinder over a 60 second countdown.

After 60 seconds the calibration is complete. You can now exit the calibration menu, however if the gas is still attached the unit will go into alarm. Simply remove the tubing from the probe, along with the separation tube which you should dispose of in accordance with your site rules.

The UltraRAE 3000 is now calibrated and ready for use.

If you have any questions or queries regarding the UltraRAE 3000, monitoring for benzene or anything to do with gas detection, please use the comments section below, or get in touch using our Contact Us page.

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