pg. 21
Atmospheric adjustment only changes the high measuring range and will have no
influence on measuring errors in the range below 10 Torr.
Executing atmospheric adjustment. (Vent transducer to Nitrogen or air pressure of 500-780 Torr)
Command:
@253ATM!7.60E+2;FF
Command values:
5.00E+2 to 7.80E+2
Command reply:
@253ACK;FF
Query:
@253ATM?;FF
Query reply:
@253ACK1.00E+2;FF
Reset to default:
@FD!ATM;FF
Factory default:
Factory adjustment value
The query feature reads the delta value between the user atmospheric adjustment value and the factory
default value.
Piezo Atmospheric adjustment
The Piezo atmospheric adjustment allows the user to adjust the atmospheric reading for the Piezo
measurement.
Executing Piezo atmospheric adjustment. (Place the transducer in atmospheric pressure)
Command:
@253SPN!7.60E+2;FF
Command values:
Atmospheric pressure value
Command reply:
@253ACK;FF
Query:
@253SPN?;FF
Query reply:
@253ACK7.60E+2;FF
Reset to default:
@253FD!SPN;FF
Factory default:
Factory adjustment value
Sensor value too high: @253NAK8;FF
Factory default
The transducer is per factory default delivered with parameters and setup as listed below. If the transducer is
delivered with customer preconfigured parameters the values are different than listed below and the
parameters will be locked per default.
Communication parameters:
Description
Command
Parameter
FD!
FD!ALL
Address:
AD!
253
-
×
Baud rate:
BR!
9600
-
×
Communication delay:
RSD!
ON
-
×
Transducer parameters:
Description
Command
Parameter
FD!
FD!ALL
Test mode (LED flash):
TST!
OFF
×
×
User tag:
UT!
MKS
-
×
Set point 1 value:
SP1!
1.00E0
-
×
Set point 1 hysteresis value:
SH1!
1.10E0
-
×
Set point 1 direction:
SD1!
BELOW
-
×
Set point 1 enable:
EN1!
OFF
-
×
Set point 2 value:
SP1!
1.00E0
-
×
Set point 2 hysteresis value:
SH1!
1.10E0
-
×
Set point 2 direction:
SD1!
BELOW
-
×
Set point 2 enable:
EN1!
OFF
-
×
Set point 3 value:
SP1!
1.00E0
-
×
Set point 3 hysteresis value:
SH1!
1.10E0
-
×
Set point 3 direction:
SD1!
BELOW
-
×
Set point 3 enable:
EN1!
OFF
-
×
Setpoint safety delay
SPD!
ON
-
×
Switch enable:
SW!
ON
-
×
Analog out 1:
AO1!
30
(1)
-
×
Analog out 2:
AO2!
30
-
×
(1) If the transducer is delivered with other analog output than standard mks (part number specified), then the factory default value will
be specified by the specials part number.
