Question 59Refrigeration & AC - Assistant Engineer

The correct answer is A) it senses compressor suction pressure and controls the quench valve. The pressure transducer shown in the illustration is used to monitor the compressor suction pressure. This information is then used to control the opening and closing of the quench valve, which helps regulate the pressure in the compressor suction line. This is a critical function to ensure the compressor operates within its safe operating parameters and prevents damage to the system. The other answer choices are incorrect because they do not accurately describe the purpose of the pressure transducer in this particular system. The transducer is not used to sense or control the compressor discharge pressure, nor is it used to control the suction modulation valves.