Vaisala DMT152 - Select Unit; Table 9 FORM Command Modifiers

Chapter 5 ________________________________________________________ Serial Line Operation
VAISALA ________________________________________________________________________ 43
Quantity
Description
PPMW
Water content in parts per million by weight
Note: For accurate ppm, ppb, or ppmw reading, you must
compensate for the pressure and molar mass of the process
gas.
Table 9 FORM Command Modifiers
Modifier
Description
x.y
Length modifier (number of digits and decimal places)
#t
Tabulator
#r
Carriage-return (Enter)
#n
Line feed
“"
String constant
#xxx
ASCII code value (decimal) of a special character;
for example, #027 for ESC
ADDR
Transmitter address with two characters [00...99]
ERR
Currently active transmitter errors in a nine bit field:
bit0 ... bit8.
bit0 T MEAS error
bit1 F meas error
bit2 Voltage too low error
bit3 Voltage too low for mA output error
bit4 Ambient temperature error
bit5 Flash checksum error
bit6 Parameter checksum error
bit7 Autocalibration error
bit8 Internal error
STAT
Transmitter status in 4 characters. The status codes are the
same as for the STAT command; see section Show
Transmitter Status on page 36.
SN
Transmitter serial number
TIME
Current time; see the description of the TIME command on
page 52.
Ux
Shows the name of the measurement unit using “x” number
of characters. For example, U3 shows the name of the
measurement unit with three characters.
Examples:
form 4.2 TDF #r #n
OK
form 3.1 “H2O= “ ppm “ “ U3 #r #n
OK
Select Unit
The DMT152 Transmitter outputs dewpoint temperature T
d
in either
Celsius or Fahrenheit degrees depending on the unit selection. The unit
selection also affects the unit (bar
a
or psi
a
) for the pressure compensation.
UNIT [x]<cr>