4. REMOTE OPERATION
Page 71 © 1998 DH Instruments, Inc.
UCOEF(=)
Purpose: To convert a pressure in Pascal to the current pressure units.
Syntax: “UCOEF”
“UCOEF=n”
Arguments:
n: The pressure (Pa) to convert.
Remarks: The PPC2 AF handles all pressure values internally in Pascal. This command allows the user to
convert pressures. If a pressure is not given, 1 Pa is assumed. The reply includes the current
pressure units.
Example: Command: “UCOEF=100”
Reply: “0.10000000 kPa”
See Also: None
UNIT(=)
Purpose: Read or set the pressure display unit.
Syntax:
“UNIT=unit”
“UNIT=unitg”
“UNIT=unita”
“UNIT=unit, ref”
“UNIT=unitg, ref”
“UNIT=unita, ref”
“UNIT”
Arguments:
unit: The text corresponding to the pressure unit.
ref: The optional unit reference temperature only if the unit is “InWa”.
Remarks: This command determines what unit is used to display pressure measurements. Refer to the
UNIT section of the manual for a detailed list of the units.
The unit text must be followed by an ‘a’ if an absolute unit is desired, else a gauge unit will be
assumed. The unit text can optionally be followed by a ‘g’ to specify a gauge unit also. There
can be a space between the unit text and the ‘a’ or the ‘g’.
If the unit specified is “InWa”, an optional second argument “ref” can be set. The “ref” can be 4,
20, or 60 corresponding to InWa at 4°C, 20°C or 60°F. If this second argument is not given
when the unit is “InWa”, then the reference temperature will be at 20°C.
The fifth character of the reply will always be ‘a’ for an absolute unit, or ‘g’ for a gauge unit.
White spaces will proceed this character if needed. The temperature reference will be added to
the reply only if the unit is “InWa”.
Example: Command: “UNIT=KPA A”
Reply: “kPa a”
Command: “UNIT=INWA, 4”
Reply: ‘inWag, 4dC”
Errors:
ERR# 7: The unit is invalid.
ERR#102: The ref is invalid (if given).
See Also: 3.4.1, 9.3
To Next Page
Loading...