Zeroing The Dex Can; Adjusting Gain Of Dex Can - DALEMANS octoPRO Calibration Manual

CAL potentiometer
Warning !
Potentiometers
are not multi-turn.
Act SOFTLY.
F1 : Select Node
F10 : Setup > 2 : Module > 2 : DEXCAN
F10 : Setup > 1 : Range
F3 : Calibration > ENTER
For more information about the use of OctoPRO device refer to the
related Instruction Manual.
Measure DEXCAN
Dir: 38,17
AVG: 0,00
A1.A : 01100000
Please refer to the OctoPRO Instruction Manual for measure function.
Flow rate = 0,8 l/min.
Calibration gas
Warning !
Potentiometers
are not multi-turn.
Act SOFTLY.
Can Bus Gas Detectors -
C lib ti
Man-CanDetectors-Cal-En-V10.doc
Voltmeter
0.00mV
DC
Measure reading on the
OctoPRO display
Detector
GAIN
Measure
potentiometer
reading
Measure DEXCAN
Dir: 50,00
AVG: 0,00
A1.A : 01110000

Zeroing the DEX CAN

• Before zeroing, allow the detector to be
powered for at least 15 min.
• Set the voltmeter on mV
connect it to the DEX CAN transmitter
using the measurement plug.
+ -
• With the precision screwdriver gently
adjust the "CAL" potentiometer so that the
voltmeter reading is 0mV ± 0.1mV.
• On the OctoPRO, select the detector
address, then select type of module
DEXCAN and enter the measuring range.
• On the OctoPRO press F3 to select
Calibration function.
• Press ENTER to start calibration and wait
until procedure completion.

Adjusting gain of DEX CAN

• Detector must have been zeroed as
described here above.
• Visualize the detector measure on the
OctoPRO display (press F2) or on the
OctoBUS 64 central unit display.
• On the cylinder, set flow rate at 0.8 l/min
and apply
measure reading stabilizes.
• With the screwdriver gently adjust the
GAIN so that the measure reading
matches the
concentration.
Example :
Cal. gas 2,5% Methane (CH
L.E.L. CH = 5%
4
Cal. gas = 50% L.E.L.
position and
DC
calibration gas until the
applied calibration gas
)
4
Measure (Dir) = 50
6