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WIKA operating instructions premium pressure transducer, model CPT9000
0020504001G 10/2019 EN
EN
Operation
TEMP_LIM_MIN?
TEMP_LIM_MIN<sp><n>
+n.nnn
Temperature low alarm
limit. See Section 6.1.2.8
TEMP_LIM_MAX?
TEMP_LIM_MAX<sp><n>
+n.nnn
Temperature high alarm
limit. See Section 6.1.2.8
Altitude/Rate Related Commands
ALT?
N/A
+n.nnn
Altitude in current units
ALT_UNIT?
ALT_UNIT<sp><cc>
c
Altitude unit - ft, m. See
Section 6.1.2.9
SEA_LEVEL?
CAL_SEA_LEVEL<sp><n>
(Password Protected)
+n.nnn
Sea level adjustment
in altitude units. See
Section 6.1.2.9
RATE_BASE?
RATE_BASE
c
Rate denominator -
s,m,h,3h
Uncertainty Related Command
UNC?
N/A
+n.nnn
Measurement
uncertainty in current
units
Output Control Commands
OUTPUT_MASK?
OUTPUT_MASK<sp><n>
n
Configures output for
PRESS? Query and
Continuous Output– see
6.1.2.10
BURST_MASK?
BURST_MASK<sp><n>
n
Configures output for
Burst Mode – See Table
6.1.2.11
N/A
BURST <sp><n>
n
0 - burst off
1 - burst on
Table 6.1.2 – Sensor Command Set
Password Protection
In the Sensor Command Set, data that affects calibration is protected by a user settable 4 character password (designated as
“Password Protected”). The default password is “0000”. This is changed using the PWD_CHANGE command. It should be
changed once the user receives the device. The factory password will override the user’s password in the case that the user loses
their password.
Filter & Window
The filter is a percentage of the previous reading averaged with the current reading - as long as the current reading is within the
window of the previous reading. The window is set as a %FS of the transducer’s range. If the current reading is outside of the
window from the previous reading, the filter is unused and the current reading is displayed without manipulation. This scheme
allows the user to tune the transducer’s response as they like. It also allows the transducer to respond to rapid pressure changes
without having to change the filter. The default values are 0.008% FS for the window and a filter of 90%.
Character Strings
STRING1 and STRING2 are 16 character strings that are left blank from the factory and can be set by the user as desired.
