fghj
19
CBX
•
Fasten the three M2.5x5 screws.
•
Connect the mA loops, negative line to screw terminal 1, and 3, positive to terminal 2,
and 4.
•
Switch on the power to the BB1/BB2 box and check that the module identifies itself
in the BB1/BB2 menu under Settings / Exp.module.
•
Configure the sensor(s) that shall use channels 3, and 4 to do so in the sensor menu.
Technical specification for 4-‐20mA module
Manufacturer
Cerlic Controls AB, Sweden
Name
BB2 4-‐20mA expansion module
Measurement
86 x 54mm
Weight
35g
Ambient temp
-‐20 -‐ +50
°
C (-‐4 -‐ +122
°
F)
Storage temp
0 -‐ 60
°
C (32 -‐ +140
°
F)
Output signals
Two (2 ) 4 – 20 mA (20 – 4 mA), galvanic isolated, 450 ohm
Maintenance
The electronics in the CBX is self-‐monitoring and requires very low maintenance. The
mechanical parts need to be inspected at regular intervals and the optical parts may
need cleaning.
Manual operation of CBX
It is possible initiate a manual trig of a sample. By holding down the “down arrow” for 5
sec on the BB1/BB2. The CBX starts a sampling cycle ASAP and returns the sensor back
home and normal mode. If more then one sensor (BB2) is connected this function will be
disabled.
ê
Starts lowering of sensor.
é
Stops lowering of sensor and returns the sensor home.
Maintenance schedule
Once a month
Once every 6 months
Once a year
Check sensor for buildup,
clean with damp cloth if
necessary
Clean sensor lens. Check if
the sensor measures
around 0 in clean water. If
not perform a 0 calibration.
Oil the cable guiding wheel
with silicon spray.
General check and cleaning
of mechanics, cable and fan
filter.
Cable and sensor
Visually check that the cable is correctly wound on the drum and that cable does not
show wear.
