What is the temperature range of the model 3604A thermo unit?

• A. +100 to 1200 degrees F
• B. -100 to +1000 degrees F
• C. +200 to +1300 degrees F
• D. Normal stem: +100 - 1200; Short stem: -100 - +1000 degrees F

Answer: (D)

The model 3604A thermo unit has specific temperature ranges for different stem configurations, which is why the answer highlighting these ranges is correct. The range for the normal stem spans from +100 to +1200 degrees Fahrenheit, which makes it suitable for high-temperature applications requiring precise measurements in this range. Additionally, the unit has a short stem configuration that extends its usefulness to lower temperatures, from -100 to +1000 degrees Fahrenheit.

This dual-range capability allows the thermo unit to accommodate a wider variety of applications, making it versatile for both high and low-temperature measurement tasks. Thus, the comprehensive answer provided reflects the two distinct operating conditions of the thermo unit, capturing its full functional potential.