Multifunction Totalizers with Batch Control

DPF708/DPF808 Series

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INVIA ORDINE

Modularized Construction
Dual 4-Digit LED
Output and Alarm Status Indicators
Temperature or Pressure Compensation on DPF800 Series

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Descrizione

The DPF708/808 series flow totalizers can accumulate the mass, volume or length of an object, and can provide batch control over the accumulation. The DPF708 series has a single input available in frequency, voltage or current input models. The DPF808 series has an additional input that is available in voltage, current or direct temperature sensor input versions. Abundant functions such as retransmission, high/low alarm of momentary flow and abnormal signal detecting. The DPF808 series also has the ability to trigger alarms for pressure or temperature. Square root function is selectable, 8-digits of accumulation value and 4-digits momentary process value, small signal cut-out can be set at any range.

The DPF808 series has temperature and pressure compensation used for general gas, saturated steam, superheated steam or liquids. The compensation calculation is done with standard look-up tables for high accuracy in steam measurement applications. Advanced computation algorithms insure accuracy in flow measurements. Used as a batch controller, it has 4-bit accumulator for control and a separate 12-bit accumulator for total sum. With high precision current input models, the totalizer can provide retransmission with 14 bit output resolution and 0.2%FS output precision.

Size	Front Panel		Cut Out		Depth Behind Mounting Surface (mm)
Size	Width(mm)	Height(mm)	Width(mm)	Height(mm)	Depth Behind Mounting Surface (mm)
1/8 DIN Vertical	48	96	45	92	100
1/8 DIN Horizontal	96	48	92	45	100
1/4 DIN	96	96	92	92	100

SPECIFICATIONS
Frequency Input: 0 to 3200 Hz
Temperature (DPF808 series): J, K or E thermocouple, 1 to 5, 0 to 5 Vdc or 4 to 20 mA
Pressure (DPF808 Series): 1 to 5, 0 to 5 Vdc or 4 to 20 mA
Accumulation Time: Fixed at 1 hour for flow accumulation, and the unit can be freely set for batch control.
Frequency Input Models: 0 to 3200Hz, the low level signal is 0 to 1V, the high level signal is 3 to 24V
Voltage Input Models: 1 to 5 V, 0 to 5 V, providing 24 Vdc/24 mA power output
Current Input Models: 4 to 20 mA, 0 to 20 mA, 0 to 10 mA
Temperature Input (DPF808 Series): K (0 to 999C), E (0 to 800C), J (0 to 999C) RTD Pt100 (-200 to 600C)
Pressure Input (DPF808): 1 to 5 Vdc, 0 to 5 Vdc
Current Input (DPF808): 4 to 20 mA, 04 to 20 mA
Current Output: 4 to 20 mA
Measurement Accuracy: ±0.2% FS, for temperature, pressure, frequency, and momentary flow without temperature or pressure compensation.
Temperature/Pressure Compensation Method (DPF808 Series):
General Gas: Temperature-pressure compensation (calculated with ideal gas equation)
Saturated Steam: Temperature or pressure compensation (calculated with steam tables)
Calculation Accuracy for Temperature-Pressure Compensation: The calculation error is <0.3% FS, and after compensation, the overall error is <0.5% FS
Accumulation Accuracy: The error is <0.01% FS
Power Supply: 100 to 240 Vac, -15%, +10%/50 to 60Hz; or 24 Vdc/Vac, -15% (optional)
Power Consumption: 5 W
Operating Ambient: Temperature -10 to 60 C; humidity 90% RH

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DPF728C-DC1-DC2