Installation
Check the Electrical Grounding
WARNING
Proper electrical grounding of your system is
essential. For your safety, read the warning sec-
tion, FIRE, EXPLOSION, OR ELECTRIC SHOCK
HAZARD, on page 2.
Have a qualified electrician check the electrical
grounding continuity between the flow meter sensor
and a true earth ground. If the resistance is greater
than 25 ohms, check the cable ground connection; re-
fer to the Fig. 2 wiring schematic. Reconnect the
ground shield or replace the cable. Do not operate the
system until the problem is corrected.
Remote Monitoring
The flow meter will send an output pulse for each gear
tooth that passes the sensor. The actual K-factor for
your meter is marked on the data sheet included with
the meter. The approximate flow volume per one pulse
(K-factor) is shown at right.
METER MODEL NO.
K-FACTOR
PPM 3050H
0.1136 cc per pulse
PPM 3100H
0.2294 cc per pulse
PPM 3550H
0.5883 cc per pulse
The flow meters are designed for use with the Graco
PPD 200 Remote Monitors. See Accessories for part
numbers and descriptions.
See Fig. 2 to connect the meter to a remote monitor
with a supply voltage b12 to +24 VDC in a
non-hazardous area.
See Fig. 5 to connect the meter in a Class
I
, Division 1
Location to the PPD 200 Remote Monitor.
See Fig. 3 for the configuration of the meter connec-
tor.
See Fig. 4 for the PPD 200 Remote Monitor dip switch
tab positions.
See instruction manual 308–242 for more detailed
information on installing and connecting the PPD 200
Remote Monitor.
Remote
Monitor
No
Connection
Vsupply
+12 to +24 VDC
Vsignal
Ground
Red
White
Black
Green
Shield
1N4148
2.74 K
W
3
W
30 V
2N2222A
Fig. 2
Typical Voltage Level Into Remote Monitor
(assuming high input impedence)
If Vsupply
=
+24 VDC
Vsignal high
23.7 VDC
Vsignal low
0 VDC
If Vsupply
=
+12 VDC
Vsignal high
11.7 VDC
Vsignal low
0 VDC
