3. Calibration
Required tools for calibration
• Hand-held Service-Tool
080Z2820
• Calibration is composed by 2 operations: zero and gain calibration
– Zero calibration: Test gas bottle with synthetic air (21% O2. 79% N) or clean ambient air
– Zero calibration for carbon dioxide / oxygen: Test gas cylinder with pure nitrogen 5.0
– Gain calibration: Test gas bottle with test gas in the range 30 – 90 % of the measuring range. The
rest is synthetic air.
– Gain calibration for semiconductor sensors: The concentration of the test gas must be 50 % of the
measuring range. The rest is synthetic air.
– Extraction set consisting of gas pressure regulator and flow controller
– Calibration adapter with tube: code
148H6232
.
Note
about test gas bottle for calibration (see Fig. 1): because the transportation of gas ampoules and
cylinders gas is regulated by many governments throughout the world, is suggested to source them
from local dealers.
Before to perform the calibration, connect the Handheld Service Tool
080Z2820
to the DGS device.
1
Danf
os
s
148H153
JP5
5
4
2
1
not used
GND
AO_01
DI_01
S&H supply
x1
open: 0-20mA
closed: 0-10V
LED
Yellow/Green/Red
1
2
3
1
2
3
x6
x5
Rel. 3
Rel. 1
x4
4
3
2
1
not used
JP3
JP2
JP1
x3
Ackn.-/Test
button
Sensor 1
Sensor 2
Tool
x9
x2
x8
B&L
JP4
Danfos
s
80Z790.
11
open: 19200 Baud
closed: 38400 Baud
B-
MODBUS
A+
-
24 V AC/DC
+
(critical)
(warning)
Operating Guide | DGS functional tests and calibration procedure
4 | AQ430229665343en-000101
© Danfoss | Climate Solutions | 2022.10
