How To Fit The Measurement Probe - CASELLA CEL CEL-712 User Manual

CEL-712 Microdust Pro Real-time Dust Monitor

3.2 How to fit the measurement probe

IMPORTANT
The instrument might give reading errors when you use it in very bright or changing
ambient light conditions. This is because the measurement method depends on the
scattering of light.
Take care when you use the instrument in direct sunlight. Shield the probe from direct
light sources. You can use a gravimetric or size selective adaptor, or use the
instrument within the environmental enclosure to eliminate the effects of high ambient
light levels.
The detachable sampling probe houses the measurement chamber together
with the associated optics, including the laser diode emitter and detector.
Connect the sampling probe by aligning the red dot on the connector to face
forward on the instrument, and insert the connector into the socket at the top of
the instrument.
How to disconnect the sampling probe
CAUTION
DO NOT pull on the cable to disconnect the sampling probe.
To disconnect the sampling probe, pull the connector's knurled outer sleeve
directly away from the main body.
The sampling probe may be unclipped from the side of the control unit for
hand-held operation.
Slide knurled sleeve away
from the instrument
Red dot is on top
15 Casella Measurement