G210 Piped Medical Gas Analyser. Easy User Calibration Demo

Geotech (http://www.geotech.co.uk) User demonstration of easy in-field pre-use calibration of the G210 (Piped) Medical Gas Analyser.

User commentary starts:

"Calibration of the G210 (Piped) Medical Gas Analyse. The G210 should really be calibrated before you use it each time. The calibration gases are quite expensive. Fortunately, The G210 uses quite small flow volumes so that saves a lot on the gases. You should have certificates of conformity for each gas.

The first step is to zero the instrument using nitrogen. So we have got our reference nitrogen with its certificate. I'm going to set the flow rate to 0.3 litres. It contains zero oxygen, zero CO2 (carbon dioxide), zero CO (carbon dioxide) and zero nitrous oxide. It is certified as 99.999 percent nitrogen. We have connected the gas. It has started to flow. All readings are dropping to zero. Ok its has levelled off. So we will tell the instrument that this is our zero level for each gas.

So we select 'Menu', option '3 Calibration', option 1 is zero with nitrogen. List of instructions, 'Connect Nitrogen', 'Flow the gas' 'Press Start'. We have done the first two so we will select 'Start'.

The instrument is waiting for the gas to stabilise. OK. The instrument now indicates that the zero calibration is completed and I can choose to accept or reject this. I will accept it and return to the main menu with the 'Exit' button. Everything is reading 'Zero'. Disconnect. Always disconnect the gas before you alter the flow setting if you have got and adjustable flow meter. One danger is that you would pump too much gas through the instrument and damage it internally.

Right. So now we will calibrate the carbon dioxide. The reading has levelled off at 495 parts per million (ppm) which is very good considering we are doing a recalibration. It has just moved up to 497 (ppm). We almost don't need to recalibrate it but we will do it anyway. 'Menu', option '3 Calibration'. This time we are selecting Span Gas which is option '2'. Span with carbon dioxide (CO2) is option '1'. We have 495 as the level. It will use that level now. Select 'Start' , then 'Accept'. Calibration Complete. Go back to the main menu pressing the 'Exit' button. The instrument is reading 497 (ppm)." User commentary ends.

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Category:

Education

Tags:

• medical
• gas
• analysis
• anayzer
• analyser
• nitrogen
• nitrous
• oxide
• carbon
• dioxide
• oxygen
• CO2
• N2O
• N2
• O2
• span
• zero
• calibration