ModeL pd684 & pd689 Loop-powered rate/totaLizers
3
Programmable Exponent
The programmable exponent function is used to linearize the level
signal in open channel flow applications using weirs and flumes
and display flow rate & total in engineering units.
Totalizer Conversion Factor
The totalizer conversion factor is a number which is multiplied by
the rate to compute total. For example, if the rate display is gallons
per hour and total is desired in liters, a factor of 3.7843 should be
used. If the rate display is gallons per hour and total is desired in
gallons, a factor of 1 should be used.
Total & Overflow Display
KEY:
= Screens Toggle
TOTAL
OVERFLOW
GAL
T
GAL
T
Alarm Condition
HI
ALARM TRIPS
ALARM SCREEN
ACKNOWLEDGED
ACK
(Display Flashes)
Press ACK button
to acknowledge
ACK
4-20 mA output
setUp & prograMMing
Easy Setup
Even with all the features packed into these meters, they’re still easy
to setup and get running. Everything is programmed from the front
panel buttons with no pots or jumpers to deal with. In fact, these
meters can be scaled without a signal source for even quicker setup.
Main Menu
9.2846
GPS
s et up
pr oG
pas s
Run
Mode
Advanced Features Menu
To simplify the setup process, functions not needed for most applications
are located in the Advanced Features menu. Press and hold the Menu
button for five seconds to access the advanced features of the meter.
Isolated Open Collector Output
The open collector output may be assigned as a pulse or alarm output.
As a pulse output this feature will produce one pulse output per a
given number of counts (user select). For example, these meters can
be programmed to produce one pulse for every 500 gallons totalized.
This output can be sent to a PLC or a counter. As an alarm output this
feature allows high or low rate indication or total setpoint indication.
instaLLation
There is no need to remove the meter from its case to complete the
installation, wiring, and setup of the meter.
Mounting Dimensions
Units: Inch (mm)
3.61"
(92mm)
2.50"
(64mm)
4.68"
(119mm)
1.76"
(45mm)
0.59"
(15mm)
3.2"
(81mm)
2.45"
(62mm)
Notes:
1. Panel cutout required: 3.622 x 1.772 (92 x 45)
2 Panel thickness: 0.040 – 0.250 (1.0 – 6.4)
3. Mounting brackets lock in place for easy mounting
This feature allows
the PD684 & PD689
to display total values
up to eight digits.
This sample shows a
total of 68,923,684.
After an alarm
has tripped simply
press the ACK
button for 3 seconds
to acknowledge the
alarm or wait for
the alarm to reset
automatically.
O+
O-
+
Alarm Indicator/
Pulse Counter
(e.g. PD693)
-
O+
O-
5-30 VDC
175 mA MAX
Relay output
connection
wiring
Pulse output
connection
wiring
