{"product_id":"ethanol-balanced-in-air","title":"Ethanol Balanced in Air","description":"\u003ch3\u003eWhat is Calibration?\u003c\/h3\u003e\n\u003cp\u003eA calibration is a ‘resetting’ of the detector’s response against a known concentration of target gas, in a balance of synthetic air or nitrogen. This determines the relationship between the detector’s reading and the actual concentration of the target gas, ensuring it is accurate. Drift in calibration can occur over time when the sensor can’t accurately read the calibration gas. Adjustment involves modification of the detector’s response to bring the reading into line with what is expected.\u003c\/p\u003e\n\u003cp\u003eCalibration drift can be caused by:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGradual degradation of sensors and electronic components\u003c\/li\u003e\n\u003cli\u003eExposure to extreme environmental conditions, such as high\/low temperature, humidity or high levels of airborne particulate\u003c\/li\u003e\n\u003cli\u003eExposure to high concentrations of the target gases and vapours, leading to sensor poisoning\u003c\/li\u003e\n\u003cli\u003eDamage including knocks and drops, vibration or being submerged in mud or liquid.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat is Bump Testing?\u003c\/h3\u003e\n\u003cp\u003eA bump test is a manufacturer-recommended quick check to ensure gas detection instrument sensors and alarms are all functioning correctly before deploying the instrument. Just because a sensor is giving a zero reading when you switch it on, does not necessarily mean that sensor is working properly.\u003cbr\u003eGas is applied long enough to make the sensor(s) alarm, to ensure that the gas is getting to the sensor and that both the sensor and alarm are working correctly. Single or mixed gas blends are available for single or multi-gas instruments. Each test costs as little as a few pence, takes just 15-20 seconds and can be carried out in-house or remotely.\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch3\u003eWhy do I need to bump test and calibrate?\u003c\/h3\u003e\n\u003cp\u003eMaintaining your gas detection instrument according to the manufacturer’s instructions will give you peace of mind that your team members are being effectively protected. It will also ensure that your warranty remains intact. Another key consideration is that, should an incident occur in the workplace, you have a record to show that the instrument has been maintained and checked regularly and correctly to ensure it is working as it should and is keeping users safe.\u003c\/p\u003e\n\u003ch3\u003eHow often do I need to calibrate my instruments?\u003c\/h3\u003e\n\u003cp\u003eMost instruments should be calibrated and serviced once a year, regardless of how often they are used. Some instruments will have different requirements, but either we or the manufacturer will be able to advise you of any exceptions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eCircumstances which may mean your instrument needs a calibration in between annual checks include drops or heavy knocks, an electrical surge, moisture, long exposure to extreme temperatures or if you suspect for any reason that the readings may not be correct or consistent.\u003c\/p\u003e\n\u003cp\u003eA certificate is issued each time your instrument is factory calibrated. When this expires it will need to be done again, regardless of how much it has been used in the interim. Shawcity will send you calibration and\/or service reminders to help you ensure your instrument is always compliant and performing at its best.\u003c\/p\u003e\n\u003ch3\u003eCan I order calibration gas for next day delivery?\u003c\/h3\u003e\n\u003cp\u003eWe only hold stock of certain high turnover calibration gas products, to ensure you always receive the highest quality gas with the longest possible shelf life. Depending on which gas you require, lead times can vary from next day to potentially 2-3 weeks. For more information, please contact us to check availability and current lead times.\u003c\/p\u003e\n\u003ch3\u003eHow many bump tests will I get from one canister?\u003c\/h3\u003e\n\u003cp\u003eSeveral factors affect the number of bump tests achievable from one canister of calibration gas. These include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe flow rate of gas that the instrument requires. The instrument manufacturer will usually recommend the optimum flow rate. Selecting a suitable fixed flow regulator will also help to maximise the number of bump tests that can be achieved.\u003c\/li\u003e\n\u003cli\u003eDemand-flow regulators for instruments fitted with internal pumps further optimise performance. They limit the flow of gas meaning there is no wasted gas.\u003c\/li\u003e\n\u003cli\u003eKeeping lengths of tubing as short as possible speed up instrument response time.\u003c\/li\u003e\n\u003cli\u003eSeveral manufacturers offer docking stations, which automate bump testing and calibration and help keep gas usage to a minimum.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eShawcity supplies calibration gas in canister sizes of up to 103 gas litres. An instrument with a response time of 10 seconds using a fixed flow of gas of 1.0 lpm might be tested several hundred times using one such canister. Each bump test, therefore, costs just a few pence.\u003c\/p\u003e\n\u003ch3\u003eCalibration Gas Regulators\u003c\/h3\u003e\n\u003cp\u003eCalibration gas regulators screw into the fitting on your gas cylinder and regulate the flow of gas to the manufacturer’s recommendation. They turn on and off simply, with a thumb screw.\u003c\/p\u003e\n\u003ch3\u003eHow often should I change regulators?\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eOur manufacturer partner Calgaz recommends replacing your regulators every two years to ensure optimum performance. Worn regulators can allow air or moisture ingress, so ensure you check your equipment regularly.\u003c\/p\u003e\n\u003ch3\u003eHow can I prevent cross-contamination?\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eUse a specific regulator for specific gas applications to avoid cross-contamination. Shawcity has access to the largest range of high-quality regulators and related equipment in the industry worldwide and we can also supply custom regulators. Contact us to discuss your requirements.\u003cbr\u003e\u003c\/p\u003e","brand":"Calgaz","offers":[{"title":"260ppm Ethanol balanced in Air \/ 57L","offer_id":41094404047001,"sku":"CAL-57-260PPM-C2H5OH\/AIR","price":145.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/2901\/3401\/files\/Product_Image_Square_Base.png?v=1778596165","url":"https:\/\/products.shawcity.co.uk\/products\/ethanol-balanced-in-air","provider":"Shawcity","version":"1.0","type":"link"}