PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer
Instruction Manual
16
Batch Control
Methods
Automatic or Manual, count up or count down
Manual Batch
Start
Pressing F1 function key starts the batch
Manual Batch
Pause/Stop
Pressing F3 once pauses the batch, pressing
it twice cancels the batch
Automatic
Batching
The can be used as an automatic
batch controller where batches run
continuously without operator input
Batching
Relay
Operation
Single or dual-relay batching with optional
preclose for dual-stage operation
Batch Preset
Set via F2 function key anywhere between
0.0001 to 99,999 based on batch total
decimal point. If batch total is assigned to
bottom, the preset can be up to 8 digits.
Batch
Preclose
For two-stage batch application, a preclose
value can be set to close the main flow line.
Automatic
Batch Restart
Delay
1 to 9,999 seconds. The batch will
automatically restart after completion
of the last batch.
Common Open Collector &
Relay Specifications
Number
Two open collectors & two relays
High or Low
Alarm
User programmable for high or low alarm
Alarm
Deadband
0-100% FS, user programmable
Output
Assignment
Alarm, Timer, Stopwatch, or Disable
Alarm Output
Source
Assign to rate, total, grand total, or digital
input
On & Off Time
Delay
0 to 9,999 seconds
Fail-Safe
Operation
Independent for each open collector and
relay.
Fail-safe on, the output is on under normal
conditions.
Fail-safe off, the output is on under alarm
conditions.
Alarm
Operation
Automatic, automatic with manual override,
latching (manual reset anytime), latching with
reset after cleared (manual reset only after
alarm has cleared)
Alarm
Indication
Programmable: loop-powered red backlight,
flashing display, alarm symbol
, bargraph
segment flashes on alarm.
Custom
Alarm
Messages
Programmable for each relay/open collector:
8 characters maximum; displayed every 10 sec for
1 sec on bottom display. May be turned off.
Alarm
Acknowledge
CapTouch ACK button or external digital
input resets output and screen indication.
Auto
Initialization
When power is applied to the meter, open
collectors and relays will reflect
the state of the input to the meter.
Timer Output
One-shot or Continuous
Off Time Delay: 1 sec to 99:59:59
(hrs:min:sec)
On Time: 1 sec to 99:59:59 (hrs:min:sec)
Stopwatch
Output turns on when started and off when
stopped.
Open Collector Outputs
Rating
Isolated open collector, sinking NPN
5-30 VDC @ 150 mA maximum
Output
Assignment
Pulse, Alarm, Timer, Stopwatch, or Disable
Pulse Output
Source
Pulse output based on Rate, Total, Grand
Total, or Test Frequency, Alarm, Timer, Total
Reset, Stopwatch on/off, or Disable
Pulse Output
Factor
0.000001 to 999,999.9
Pulse Width
0.5 ms @ 1 kHz; 500 ms @ 1 Hz;
50% duty cycle
Pulse Output
Frequency
1,000 Hz maximum
Quadrature
Pulse Output
Available for Output 2
(90° behind Output 1) 500 Hz max
Alarm Output
Source
Assign to Rate, Total, Grand Total or Digital
Input
Solid-State Relays
Rating
250 VAC/VDC @ 0.5 A resistive
38 VA; 250 VAC; 0.3 A pilot duty
(inductive)
13 VA; 250 VDC; 0.3 A pilot duty (inductive)
Noise
Suppression
Metal oxide varistors across outputs
Relay
Assignment
Alarm, Sample, Timer, Batch, Stopwatch
on/off, or Disable
Alarm Output
Source
Assign to Rate, Total, Grand Total, or Digital
Input
Relay
Runtime
Meter will keep track of how long each relay
has operated and display this information.
Relay
Cycles
Meter will keep track of how many times the
relays have cycled and display this
information.
4-20 mA Transmitter Output
Accuracy
±
0.05% FS
±
0.001mA
Output
Source
Rate, total, re-transmit;
reverse scaling
allowed
Scaling
Range
1.00 to 23.0 mA
Disable
High impedance state, less than 1 mA
Calibration
Factory calibrated 4.00 to 20.00 mA
Underrange
1.0 mA, 3.5 mA, or 3.8 mA
(If input < 3.5 mA); or Off;
user selectable
Overrange
20.5 mA, 20.8 mA, or 23.0 mA
(If input > 20.5 mA); or disable overrange;
user selectable
Isolation
500 V input-to-output
Temperature
Drift
0.5 µA/°C max from -40 to 75°C ambient
External Loop
Power Supply
7.0 VDC to 30.0 VDC maximum
Output Loop
Resistance
10-
750 Ω @ 24 VDC; 10-1100 Ω @ 30 VDC
