Instruments that measure air velocity and air/surface temperatures are one of the most important tools an HVAC tech will have in his tool box. With these meters seeing everyday use, it is imperative that you understand the limitations of certain instruments and select the correct one. Having the right tool will help grow your business and will pay for itself and then some. With so many options out there, I wanted to highlight a few models from Extech and discuss what sets them apart.
Today I will be going over the TSI 9515 VelociCalc Air Velocity Meter. This meter is an excellent entry level air velocity meter for the professional HVAC technician. The TSI 9515 separates itself from the plethora of air velocity meters in this price range by having a range of 0 to 4,000 ft/min (0 to 20 m/s) and an accuracy of 5%.
Last week I wrote about the TSI HM675 Hydronic Manometer . Today I will be discussing its older brother the TSI HM685 Hydronic Manometer. The HM685 manometer is an upgrade over the HM675 and has the same features but with a few upgrades. First the HM685 can calculate flow, heat flow, impeller diameter and brake power. This unit is also a data logger and stores up to 4,000 data points on the internal memory that can be used with the provided CompuDat Downloading Software.
It appears that logic and common sense has prevailed. In an announcement that seemed all too obvious, TSI Alnor has released a few new accessories for their TSI Alnor EBT731 Balometer. This includes a wheeled stand that can extend up to 15ft in the air and LogDat Mobile software that can be used via Bluetooth to operate the Balometer and see data, take pictures, record voice annotations and generate reports.
Finding a quality hydronic manometer can be a tough task. However, the TSI HM675 Hydronic Manometer is great choice. The HM675 can simultaneously measure and display low side, high side, and differential pressure. This unit also has a nice splash-proof case and inputs for two temperature probes. The HM675 reads pressure in H2O, ft H2O, psi, in. Hg, m H2O, kPa, mm Hg, bar and has a range of 0 to 300 psi. Great for setting balancing valves, checking pump performance, and balancing heating and cooling systems.
Product selection in the Combustion Analysis market sure is “stacked”. All jokes aside, there are lots of options when it comes to which combustion analyzer you should choose. Today I will be discussing the UEi C157 Eagle3x Combustion Analyzer.
