Multiplexing apparatus for measuring air flow and air temperature

A portable air fan measurement tool, comprising:

• a base comprising a magnet, the magnet being configured to attach the base to an air fan ring of an air fan, wherein blades of the air fan rotate in an air fan plane;
• a vertical support having a first end configured to engage the base, wherein the vertical support is disposed adjacent to the air fan ring when the base is attached to the air fan ring;
• an angular support having a first end configured to engage the vertical support;
• a horizontal support having a first end configured to engage a second end of the angular support;
• a boom having a first end that is configured to engage a second end of the vertical support and a second end of the horizontal support, the boom having a major length with a longitudinal axis passing along the major length, wherein the longitudinal axis extends across the air fan plane when the base is attached to the air fan ring;
• and
• a plurality of air fan measurement devices that are disposed on the boom, each of the plurality of air fan measurement devices including an anemometer configured to measure an air flow generated by the air fan and a thermometer configured to measure a temperature of the air flow, wherein the plurality of air fan measurement devices are adjusted to be parallel to the air fan plane.