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.
Median salaries range from about $62,000 for a HVAC mechanical engineer to $67,000 for project engineers. Those who advance to management positions such as a chief mechanical engineer can earn a salary of more than $109,000 per year, according to PayScale, an online salary database.