Danfoss LD/LDS sensors are used to detect the flame in yellow flame oil burners. They are designed for use with Danfoss units of the OBC 80 and BHO 70 series.
LD/LDS sensors meet the requirements of the EN 298:2012 standard, as well as those of the RoHS and WEEE Directives.
Function
The LD/LDS sensors are based on the photo transistor principle in connection with an amplifier and convert light from the flame into a current. The flame’s characteristics and the location of the sensor influence the size of the photo current created in LD/LDS. For this reason, LD/LDS is available in two sensitivity levels.
If a strong enough signal is not produced with the selected sensor, select a sensor with a higher
sensitivity level. If the flame cannot be detected at the highest level of sensitivity, use the Danfoss
UV sensor.
To determine the signal’s quality, use the gauge set-up below. For no flame/darkness, the value must be = 5 µA;
for flame/light the value must be =65 µA.
Electrical Connection
The LD/LDS sensors can be installed using a flange and clamping ring; alternatively, use a rubber sleeve (delivered mounted on LD/LDS). The sensors are available in two standard lengths, with a longer piece featuring built-in extension tubes.
Installation
The LD/LDS sensors can be installed using a flange and clamping ring; alternatively, use a rubber sleeve (delivered mounted on LD/LDS).
The sensors are available in two standard lengths, with a longer piece featuring built-in extension tubes.