The DR58 uses a heated diode sensor. The heated diode’s advantage is that it detects absolute concentration levels so it can be held on a leak and will continue to beep. It is also initially very sensitive. Its disadvantage is that the sensor becomes less sensitive over life, eventually needing replacement. The DR82 uses an infrared (IR) sensor. It detects a change in concentration, so the wand must keep moving. The advantage of the Fieldpiece IR sensor and its sensitivity is that it will last the lifetime of the instrument.

Automatic zeroing on the instrument allows for convenient pinpointing of a refrigerant leak by setting a new 'zero-value' every 3-4 seconds. This is useful when a large concentration of refrigerant is being detected in a contained area. Manual zeroing puts the control of the zero function in your hands, you can simply press the zero button on the tool at any time to set a new zero value. This is good for clarifying the leak source once it has been identified.

Set the sensitivity level by pressing the Sensitivity button. Low (L), medium (M), or high (H) sensitivity will be indicated at the top of the LCD display. The higher the concentration of refrigerant in the ambient air, the lower the sensitivity setting should be to minimize false trips. The TURBO (T) function is an additional 4th sensitivity that pushes the DR82 to it highest possible sensitivity.

The DR82 does not require a replacement sensor, it will last the lifetime of the instrument.

The DR82 sensor will last the lifetime of the instrument.