Javino Air conditioning temperature r 5K 10K 15K 20K 25k 50K Air Conditioner Tube r rubber head copper head

Javino Air conditioning temperature r 5K 10K 15K 20K 25k 50K Air Conditioner Tube r rubber head copper head

Air conditioning temperature r temperature probe Room temperature & tube temperature

1. The resistance of different types of temperature r is different, but how to judge the quality of the temperature r? Very simple, it is to measure its voltage online, the normal voltage at 25 degrees is generally between + 2 ~ + 2.5V .

2. Because the human body temperature is constant, the on-circuit voltage is not constant (approximately 2.17V) when holding the temperature-sensing head for a while.

3. Unplug the temperature-sensing head, and measure the resistance of the two pins of the socket on the line. The resistance value is basically the model value of the temperature-sensing head at 25 ℃ (this method is inaccurate after actual ). If the resistance is about 8K, the model value of the r temperature head is generally 10K; if it is a 4.7K resistance, it is a 5K temperature head; and so on. However, for some large air conditioners, the resistance value of the temperature r of the control board of the inverter air conditioner external unit is 3 times the lower bias resistance, that is, the resistance value measured by the above method multlied by 3 is the resistance value of the r at 25 ° C.

4. The model value of the temperature r is its resistance value at 25 ℃, usually 5K, 10K, 15K, 20K, 50K, which are generally negative temperature coefficient, that is, the higher the temperature, the more the resistance value small.

5. Generally speaking, the temperature of the internal machine tube and the room temperature resistance are the same.

Air conditioning temperature r temperature probe Room temperature & tube temperature

1. The resistance of different types of temperature r is different, but how to judge the quality of the temperature r? Very simple, it is to measure its voltage online, the normal voltage at 25 degrees is generally between + 2 ~ + 2.5V .

2. Because the human body temperature is constant, the on-circuit voltage is not constant (approximately 2.17V) when holding the temperature-sensing head for a while.

3. Unplug the temperature-sensing head, and measure the resistance of the two pins of the socket on the line. The resistance value is basically the model value of the temperature-sensing head at 25 ℃ (this method is inaccurate after actual ). If the resistance is about 8K, the model value of the r temperature head is generally 10K; if it is a 4.7K resistance, it is a 5K temperature head; and so on. However, for some large air conditioners, the resistance value of the temperature r of the control board of the inverter air conditioner external unit is 3 times the lower bias resistance, that is, the resistance value measured by the above method multlied by 3 is the resistance value of the r at 25 ° C.

4. The model value of the temperature r is its resistance value at 25 ℃, usually 5K, 10K, 15K, 20K, 50K, which are generally negative temperature coefficient, that is, the higher the temperature, the more the resistance value small.

5. Generally speaking, the temperature of the internal machine tube and the room temperature resistance are the same.

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