How do I adjust the Insta Trans to reach the calibration gas cylinder value?
Example : Let’s say you cannot adjust the unit to match the gas cylinder you have which is 90 ppm O2. The unit reads 97 ppm and cannot be adjusted. Factors which can affect this are: 1) It is possible there is a leak in the system or the system is overpressurized. The Insta Trans should be vented to atmosphere and should have a flow of about 1 SCFH. The reading is insensitive to flow variations as long as there is no leak. If the flow is raised to 2 SCFH and the unit reads lower in O2 as a result, in most cases this indicates a leak. 2) The cylinder itself may be misanalyzed (the supplier of the cylinder may have incorrectly measured the concentration of gas). We have adjustment ranges in our product to cover the full range of the sensors’ output variation at a specific O2 level. 3) Consider the calibration gas type. We recommend for best results calibrating with O2 in a CO2 mixture if you are analyzing a CO2 mixture. The background gas should remain constant for best results. 4) Time
Related Questions
- During zero calibration, the display shows the summation of the zero gas O2 value plus the present background level and previous background level, correct?
- Although nitrogen (N2) is constantly fed into the Incubation System, the O2-concentration does not reach the setpoint value. What can be the problem?
- Could gas consumption (therms) be combined with the kW to reach the minimum demand requirements?
