Distance To Object; Sensor Placement (1-Color Mode); Figure 6: Proper Sensor Placement In 1-Color Mode - Fluke Endurance Series User Manual

Endurance® Series
Users Manual
®
Mount the Endurance
sources of electrical interference, such as motorized equipment producing large step load
changes.

Use shielded wire for all input and output connections.

Make sure the shield wire from the electronics to terminal block cable is earth grounded.

For additional protection, use conduit for the external connections. Solid conduit is
better than flexible conduit in high noise environments.

Do not run AC power for other equipment in the same conduit.
When installing the Endurance
discharge lamps or heaters that may be in the field of view (either
background or reflected on a shiny target)! Reflected heat sources can
cause a sensor to give erroneous readings.

4.4. Distance to Object

The optimal distance to the measuring object depends on the optical lens focus (F0, F1, F2) of
the sensor head and the needed measurement spot size. Please see section 3.4, Optical
Specifications for detailed information regarding the focus options. The Endurance
placement may vary to suit specific applications. The following sections demonstrate the sensor
placement under various conditions, where 1- or 2-Color temperature measurements deliver
reasonable readings.
4.5. Sensor Placement (
Sensor placement for 1-Color temperature measurements is more critical than for 2-Color
measurements. The sensor must have an unobstructed view to the target. Any obstruction on
the lens, the front window, or in the atmosphere influences the temperature reading accuracy.
The sensor distance to the target can be anywhere beyond the minimum requirements, as long
as the target completely fills the field of view.
Target greater than spot size

Figure 6: Proper Sensor Placement in 1-Color Mode

20
fiber optic electronics enclosure as far away as possible from potential
®
Mode)
1-Color
best
Target equal to spot size
sensor head, check for any high-intensity
good incorrect
Target smaller than spot size
®
sensor