DPF400 Series are discontinued. Take advantage of close-out pricing, discounts up to 50% have been applied to all remaining inventory. As a possible substitute, please check out DPF20 for details.
The DPF400 Series is a complete
line of flowrate indicators offering
exceptional performance at an
economical price. Individual models
are available for flowrate and
totalization (with or without square
root extraction) batch control.
The DPF400 is front panel
programmable to scale any input
range to display in desired
engineering units. Independent
scale factors for rate and total allow
rate indication and totalization in
different units, such as GPM rate
and total barrels. If the optional
RS-232 or RS-485 communications
are installed, the unit may also be
programmed by remote computer.
The DPF400 is available with
4 input types, including TTL/open
collector pulse, low level frequency,
analog voltage or analog current.
The unit can be user-configured
for one of three functions:
a ratemeter/totalizer/batcher
a ratemeter/totalizer/batcher
with square root extraction
(for differential pressure
flow measurement)
a batch controller only with
multibatch counting, auto/manual
batch recycle, and remote or
local STOP/CONTINUE control
(START control can be obtained
with a user supplied switch in
series with the control relay)
Options to the DPF400 include
analog and BCD outputs,
alarm/control outputs, and RS-232
or RS-485 communications.
The RS-232 or RS-485
communications options are
bi-directional, allowing the user
to configure the DPF400 as well
as read current values.
While each DPF400 comes
standard with 5 open collector
outputs, the optional DP40-R board
provides dual 7A mechanical relays
which replace two of the open
collector alarms, for a total of
two 7A relay and three open
collector alarms.
SPECIFICATIONS TTL Level Inputs (DPF401): 0.7 to 2.0 V threshold; 0.2 Hz to 20 kHz frequency; 24 V protection, positive trigger slope; 16 to 30 V unregulated 75 mA sensor excitation Isolated Pulse Input with Excitation(DPF402): 60 Vrms with protection to 240 V max signal
Excitation
Hysteresis
Sensitivity
DPF402
5 V
13 mV
30 mV
Low
8.2 V
22 mV
50 mV
Level
2.4 V
35 mV
60 mV
NPN Open Collector Input (DPF402): 3-wire connection; 12 V regulated excitation NAMUR Input (DPF402): 2-wire connection; 8.2 V excitation; 1 kohm impedance; <1 mA activated, >3 mA deactivated Contact Closure Input (DPF402): 2-wire connection; 12 V regulated sensor excitation, 10 on/off per second frequency range Analog Input (DPF403): 0 to 5 V, 1 to 5 V, or 4 to 20 mA range; 0 to 10 V, or 0 to 1 mA inputs optionally available; 354 Vp isolation; programmable low-level shutoff; 0.02% FS non-linearity; 0.05% FS accuracy; accuracy, 50 ppm/°C temperature coefficient, maximum Display: 6-digit, 14-segment LED, red or green; 13.8 mm H (0.54"); indicator lights for alarms and status modes Display Update: 0.04 to 3 seconds, programmable. Min. Input Frequency: 0.2 Hz Power: 115 std., 230 Vac opt. 50/60 Hz; 10 Watts maximum Accuracy: Frequency: 0.01% of reading; Analog: 0.05% of full scale Step Response: Analog: 50 msec for 10 to 90% FS; Frequency: equal to selected gate time Operating Ambient Range: 0 to 50°C (32 to 122°F), 95% RH, non-condensing Storage Temperature: -40 to 85°C (-40 to 185°F) RS-232 Communications (optional): Front panel programmable for 300/1200/2400/4800/9600/19.2k baud; RJ11 4-wire connection; complete program setup and message display capability; programmable to transmit all measured values, alarm status, actual measured input value (not scaled) and status on programmable intervals from 1 to 60,000 seconds. RS-485 Communications (optional): 300/1200/2400/4800/9600/19.2k baud; RJ11 6-wire connection; addressable from 0 to 199 Open Collector Outputs: Five 150 mA @ 1 Vdc sink; 30 V open BCD Output (optional): Isolated; 3- or 6-digit addressing; TTL level output; 5 Vdc external power supply required for isolated output Mechanical Relays (optional): dual, form C; 7A at 230 Vac/30 Vdc Analog Outputs (optional): 0 to 5 V/ 1 to 5 V/0 to 10 V/0 to 20 mA/4 to 20 mA all field selectable; all internally powered (sourcing); 600 ohms max. loop impedance for 20 mA outputs; min. 500 ohms input impedance for voltage outputs; 354 Vp isolation; 15-bit resolution; 0.1% of reading accuracy; 50 ms step response; fully adjustable zero and span adjustments. Dimensions: 48 H x 96 W x 149 mm D (1.89 x 3.78 x 5.86") Panel Cutout: 45 H x 92 mm W (1.772 x 3.622"); 1⁄8 DIN Weight: 574 g (1.27 lb)
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