Infusion devices are of high importance to the world of medicine. These devices demand special care as they need to be handled very subtly.  The different ways the infusion devices are calibrated are as follows:

  • Infusion device analyzer method
  • Gravimetric method
  • Water front tracking method

Among the three, the Infusion device analyzer method is widely used especially in hospitals. Next, the gravimetric method is applied at metrology institutes. On the other hand, the water front tracking approach is applicable for instances where the flow rate is relatively low.

The calibration methods are discussed briefly in the following lines:

Infusion device analyzer method

The calibration approach is completely based on a comparison between the general flow rate of an infusion device and the device chosen for maintaining flow rate or volume which needs to be delivered. In nutshell the infusion device analyzer is the calibrator primarily used to deduce the flow rate as per its self inference. The medical sphere highly relies on Mobile Niki T34 Annual Calibration. Hence, the infusion device analyzer method is extensively administered at hospitals and various other medical care units. It is a primary approach which has been aiding the medical industry in leaps and bounds.

Under the infusion device analyzer method there is need for an expert to determine any kind of calibration uncertainty with the Mobile Niki T34 Service. Calibration among a lot of components is taken into account during the process, which includes:

  • IDA calibration improbability
  • Uncertainty in water temperature
  • Expansion co-efficiency of a disposable syringe
  • Standard deviation in measurement

Gravimetric method

This is yet another calibration method used for micro fluid applications. Experts consider it a standard approach to determine and calibrate flow rates. Further the approach is based on some key metrics which include:

  • Mass and time yielding unit  
  • Mass/time unit

Calibration conditions

In order to maintain favourable calibration condition water is dispensed into a beaker which is constantly monitored to ensure there is no formation of droplet. This is done by means of a needle which is suspended in water. Formation of drops can lead to major errors as the balance will not drop while the infusion device generates a balance on its own. The second most important aspect is to ensure that evaporation is restricted. Meanwhile it is vital to snap contact with the submerged needle. Significant amount of evaporation can lead to calibration error. How? The mass shown in the balance would considerably go lower than what is generated by means of the infusion device.

Several methods are used to restrict evaporation. One of the methods involves the presence of saturated air right above the beaker. Moreover the humidity should also be controlled in order to prevent occurrences of condensation inside the beaker. There is yet another approach for controlling humidity. It involves covering the layer of water with non-evaporating liquid. In order to create the non-evaporating cover, a particular variant of liquid having lower density is used. Under a majority of circumstances, experts use paraffin oil to cover up the water surface.


Author's Bio: 

An expert in the field of science and medicine, the author mentions about the role of Mobile Niki T34 Annual Calibration. Also, the author writes blogs on primary areas of science.