Which of the illustrated devices is used to...

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Question 1 of 205eccef9dbacbc34ba4d460de

Which of the illustrated devices is used to charge in precise amounts of refrigerant and features a graduated cylinder calibrated in weight units, but cannot be used to weigh a refrigerant bottle? See illustration GS-RA-45.

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🔍 Key Concepts

• Compare devices that measure flow/quantity in a cylinder versus devices that act as scales to weigh objects. • Think about which device has a graduated cylinder marked in weight units (ounces or pounds) rather than a platform or hook meant to hold a bottle. • Consider which device is used in-line with charging hoses to meter refrigerant into the system, not to support the refrigerant container itself.

💭 Think About

• Looking at each illustration, which one shows a fixed transparent chamber where the refrigerant amount can be read off a vertical scale, instead of a pad or hook that you hang/place a bottle on? • Which devices (by their design) are clearly meant to support and weigh a bottle or load—and therefore should be eliminated because the question says it cannot be used to weigh a refrigerant bottle? • If you had to meter out, say, 24 ounces of refrigerant into a system without putting the bottle on a scale, which pictured device’s design naturally fits that job?

✅ Before You Answer

• Identify which device has a visible calibrated tube/cylinder with markings in weight units along its length. • Eliminate any device that looks like a platform scale or hanging scale with a hook, since those are for weighing a bottle or load. • Confirm that your choice could be installed in the charging line so refrigerant passes through it, with the amount read directly from the cylinder scale.

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