PPCH-G™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company
Page 146
7.2
UNIT CONVERSION
7.2.1
PRESSURE
PPCH-G performs all internal calculations in SI units. Numerical values input or output in other units
are converted to SI immediately after entry and back to other units just before output as needed.
Table 27 provides the conversion coefficients used by PPCH-G to convert numerical values
expressed in SI units to corresponding values expressed in other units.
Table 27.
Pressure unit of measure conversion coefficients
TO CONVERT FROM Pa To
MULTIPLY BY
Pa
Pascal
1.0
mbar
millibar
1.0 E-02
hPa
hecto Pascal
1.0 E-02
kPa
kilo Pascal
1.0 E-03
bar
bar
1.0 E-05
mmWa @ 4°C
millimeter of water
1.019716 E-01
mmHg @ 0°C
millimeter of mercury
7.50063 E-03
psi
pound per square inch
1.450377 E-04
psf
pound per square foot
1.007206 E-06
inWa @ 4°C
inch of water
4.014649 E-03
inWa @ 20°C
inch of water
4.021732 E-03
inWa @ 60°F
inch of water
4.018429 E-03
inHg @ 0°C
inch of mercury
2.953 E-04
kcm
2
kilogram force per centimeter square
1.019716 E-05
mTorr
milliTorr (micron of mercury
7.50063
Torr
Torr (millimeter of mercury)
7.50063 E-3
User
user
User defined coefficient
7.3
REMOTE [ENT]
The PPCH-G remote ENTER function operates by detecting the open or closed status of the REMOTE
ENTER switch.
The normal status of the ENTER switch is OPEN. When PPCH-G detects a CLOSED condition held for
300 ms, it is interpreted as equivalent to a press of the
[ENT/SET P]
key.
Any switch may be used to accomplish the remote ENTER function. The switch should be installed on
the optional remote ENTER cable (
DHI
P/N 103128). Install the switch by connecting its two terminals to
the black and white wires of the remote ENTER cable.
1. Black
wire
2. White
wire
Figure 19.
Remote [ENT/SET P] connector schematic
