The pressure transmitter comes in a number of shapes and sizes. One, referred to as a Bourdon Tube, is designed especially for monitoring non-liquid pressure. They are relatively inexpensive and good for measuring air and gas pressure in compressors. The tubes may be c-shaped, spherical and helical.
Pay for heating technicians can vary significantly by industry. The highest average pay, at $70,920 a year, was reported by those working for electric power companies, according to the BLS. Technicians also earned above average pay in the motor vehicle parts manufacturing industry, at a mean $64,610 per year.
HVACR technicians inspect and maintain heating and cooling systems. Heating, air conditioning, and refrigeration mechanics and installers held about 292,000 jobs in 2014, of which 63 percent were in the plumbing, heating, and air conditioning contractors industry. About 1 in 10 were self-employed in 2014.