Differential pressure / Volume flow controller DPC200

Differential presssure / volume flow controller

Switchable operating modes (measuring or controlling)
Switchable measured variables (differential pressure or volume flow)
Switchable measuring units (Pa and m3 / h or InH2O and cfm)
4 application-oriented preset measuring ranges
Analog output 0 … 10 V
Adjustable k-factor for volume flow calculation
Measuring mode with adjustable limit
Control mode with adjustable:

2 setpoints
Setpoint configurable via external signal input option:
– 10 V DC signal or temperature sensor
PI parameters for PI algorithm
Maximum output voltage
Control effect positive / heat or negative / cool

GRILLO-DPC differential pressure controllers / volume flow controllers are used to measure and control low differential pressures of non-aggressive gases, especially air. A signal of 0…10V is available to the user as an analog output. Depending on the setting of the device, this signal has different meanings. If the instrument is used as a pressure sensor, the output signal is proportional to the measured pressure. As a volume flow sensor, the device provides a root-equipped output signal. In pressure or flow rate control, the output signal represents the manipulated variable of the PI control.

It is used, for example, in air conditioning technology for controlling fans, monitoring room pressure or controlling filters. In addition to the analogue output, an additional alarm output (open collector) is available for limit value monitoring or filter monitoring.

Operating mode:
Measuring mode or control mode
Measuring medium:
Air or non-aggressive gases
Measuring principle:
Electromechanical diaphragm measuring system
Measuring unit:
Pa / inH2O or m3/h or cfm
Smallest measuring range:
0…50 Pa (0.5 mbar) / 0.2 InH20
Largest measuring range:
0…6000 Pa (60 mbar) / 24 InH20

Measuring range:
0…50 Pa (0.5 mbar), 0…100 Pa (1 mbar), 0…500 Pa (5 mbar), 0…1000 Pa
(10 mbar), 0…2000 Pa (20 mbar), 0…4000 Pa (40 mbar), 0…6000 Pa (60 mbar)
Measuring range selection:
Factory preset
Adjustable controlling parameters:
P/I – parameter, k-factor, maximum output voltage, normal/ inverse control
Characteristic:
linear for pressure measurement, radiated for volume flow measurement
Ambient temperature:
-10…+50°C
Storage temperature:
-25…+60°C
Control characteristic:
PI – algorithm
Setpoint settings:
2 setpoints can be set via keys, selection of setpoints via potential free contact
Limit signal Output / alarm output:
Open Collector, max. 30 V / 30 mA
Alarm delay time:
12 seconds

Overpressure protection:
0.2 bar

Static pressure:
max. 0.2 bar

Zero point calibration:
Adjustable by REEDcontact, no cyclic zero-point calibration required

Reaction time:
direct

Zero drift:
±0.75%

Sum of linearity and hysteresis:
± 0.5 % … ± 1 %

Temperature drift zero point:
±0.3% / 10K

Temperature drift measuring range:
±0.2% / 10K

Housing:
UL 94 HB; Ultramid with hinged lid of ABS

Dimensions:
95 x 70 x 54 mm (w x h x d)

Weight:
approx. 250g

Protection class:
IP54 according EN60529

Display:
Two-line alphanumeric LCD display, 2 x 16 characters

Electrical connections:
Cable entry M16x1.5, screw terminals, electronics protected against incorrect polarity

Cable entry:
2 x M16

Pressure connections:
Hose connections 5 mm ø and 6 mm ø

Operational position:
Vertical, position dependence when rotated through 90 ° approx. 25 Pa

Power supply:
10…30 Vdc; 24 Vac (±15%)

Power consumption:
approx. 10 mA @ 10 Vdc, ca. 12 mA @ 24 Vdc

Output:
0…10 V (Imax = 0.4 mA @ 10 Vdc, Imax = 2 mA @ 20 Vdc)

EMC:
EN 61000-6-2, EN 61000-6-3, CE-mark
RoHS:
According RoHS-directive 2011/65/EU

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