The DPF80 series (Dual Rate Totalizer) is a 5 digit Ratemeter, 6 digit Totalizer in a 1 /8 DIN package.
The DPF80 Series is the ideal solution for many flow meter applications. Omega offers many different
types of flowmeters: paddlewheels, turbines, positivie displacement, annemometers, mass flow, etc. for
many application solutions.
User selects 1 of 6 displays to show A, B or C rate and A, B or C total. Inputs A and B have separate
scaling to read in engineering units. A 4-20mA (0-20mA) output of the C rate or total is optional.
The user can press the VIEW button to see 6 separate items, total A, total B, total C, rate A, rate B, rate C.
Negative values are displayed with a negative symbol (-12345). For the C value, the user can choose from
the following combination of A&B inputs: TOTAL; with a choice of A+B or A-B, RATIO; with choice of
A ÷ B (x100) to show percent of A to B quantity or A ÷ [A + B (x100)] to show percent of A to total quantity.
Two independent presets are standard. User selects whether output A is activated by total or rate value of
input B or selected C. Outputs activated by A or B total can be set to latch or auto recycle with an adjustable
output duration from 00.1 to 99.9 sec. For rate, ratio, or C total, outputs pull in when value (equal or above the
preset and drop out when value) is below the preset minus the selected 0 to 99.9 hysteresis. K FACTOR/SCALING The DPF80 series has two separate K-Factors that are used to
convert the input pulses to engineering units. The 5 digit K-Factor dividers, with decimal keyed into any
position, allow easy direct entry of any K-Factor from 0.0001 to 99999. Separate factors may be entered
for the 2 separate input channels. . CONTROL OUTPUTS. Relays:
2 each N.O. Relay; 10 Amps 120/240 Vac or 28 Vdc. (N.C. relay contacts and NPN transistor output
available with solder jumpers. Transistor output is internally pulled up to 10 Vdc through relay coil, sinks
from 10 Vdc to 0.5V @100mA) Analog Output: An optional 4-20 mA (0-20mA) output is
available. The output can be programmed to track rate or total of the C display. This feature is available
by adding suffix A to the part number. Connections are via a 2 terminalpluggable screw connector.
Programming is accomplished by using the front panel in conjunction with rear dip switches.
Accuracy: 50 µA worst case Compliance Voltage 3 to 30 Vdc non inductive
PRESETS Two control outputs are provided. To set relay values, press “menu” button
until “Relay” appears on the display, the A and B outputs can be assigned to the A, B or C displays.
A 5 digit value can be entered for both presets and the decimal point location is the same as the counter.
the outputs can be set to energize from 0.1 to 99.9 seconds or latch (0.0). If a value other than 0.0 is entered,
the counters will auto reset at the preset (for A& B counters). LOCKOUT Unauthorized front
panel changes can be prevented by entering a user selected 5 digit code. The front panel can be completely locked out or the presets can remain accessible. RATEMETER Accurate to 41 /2 digits (±1 display digit). The ratemeter uses 1/tau with 8 digit math, can sample from 2 to 24 seconds maximum, and auto-range up to 5 digits of significant information. In the "RPS" mode, the ratemeter displays in units per second, and in the "scale" mode, units per hour or per minute. The unit will display the rate of the A&B Inputs. COUNTER The two 6-digit counters can count at 10 KHz speed. Each has a separate 5-digit dividing scale factor. The counters advance on the positive edge of each pulse. Besides being able to step through the total and rate values of A & B inputs, the user can see a selected combination of total and rate of A+B, A-B, A÷B x 100 (percent of A to B), A ÷ (A+B) x 100 (percent of A to Total). A negative display will be viewed as a 5 digit display with a negative symbol (-12345).
SPECIFICATIONS Display: 5-digit, 14 mm (0.55") high LED Input Power:
110 Vac ±15% or 12 to 15 Vdc
220 Vac ±15% or 12 to 15 Vdc (optional)
24 Vac ±15% or 12 to 15 Vdc (optional) Current: 250 mA dc max or 6.5 VA ac Output Power: (AC-powered units only) + 12 Vdc @ 50 mA, unregulated - 0 + 50% Temperature Operating: 0 to 54°C (32 to 130°F) Storage: -40 to 93°C (-40 to 200°F) Humidity: 0 to 90%, non-condensing Memory: EEPROM stores data for 10 years if power is lost Inputs DPF82: High-impedance DC pulse input 4 to 30 Vdc (high), open or 0 to 1 Vdc (low),10 kΩ impedance, 10 kHz max speed; accepts simultaneous inputs DPF83: Mag. input, input A only, accepts 30 mV input (50V max P/P), signals 10 kΩ impedance, 5 kHz max, (input B, 4 to 30V) DPF84: Mag. input, inputs A and B, accepts 30 mV input (50V max P/P) signals 10 kΩ impedance 5 kHz max Reset Front Panel: Reset displayed value and control output Remote: 4 to 30 Vdc negative edge resets all counters, "A" counter or "B" counter (user selectable)
All dollar amounts on this site are shown in Canadian currency.Note: Comes complete with mounting bracket, gasket, two screws, and operator's manual.
(OPTIONS SHOWN IN THIS "NOTE" ABOVE ARE PRICED IN US$)