Arthur Grillo DPC200 User manual

Description and operating
Differential Pressure Controller DPC 200
Lowpressuresensorwithanalogoutput
andPIcontrollingmode
Diagraphmelementwithdifferentialtransformer
Measuring ranges: 0...50 Pa, 0...500 Pa, 0...1000 Pa, 0...4000 Pa
Analogoutput0...10V
Controllingmodeormeasuringmodeselectable
LCD-Display
ControllingmodewithPIalgorithm
2setpointsadjustable
Maximumoutputvoltageadjustable
CompactplastichousingIP54
Supplyvoltage10...30Vdcor24Vac(+/-15%)
Selectablemeasurements(differentialpressureorvolumeflow)
Selectableunits(metricorimperial)

Safetyinstructions
!Attention! Read this instruction carefully, before you insert connect this
item. Only qualified personal who is familar with installation, construction and operating
of the equipment should work around these sensors.
2
Application
The differential pressure controller DPC200 measures low pressure of non-aggressive gases, particulary
of air.
The customer can use an analog signal (0...10V). The device offers two different settings. On the one hand
the output signal stands for a pressure proportional signal during measuring mode or volume flow square
root signal.
And on the other hand the output signal stands for a PI control signal for differential pressure during
controlling mode or volume flow during controlling mode.
This device is mainly for e.g. in air conditioning systems for fan controlling, for pressure control of rooms or
filter controlling.
Description
The to be measured differential pressure affects to both sides of a silicone diaphragm, which is displaced
against a measuring spring. The displacing of the diaphragm is converted into an electrical output signal
by a differential transformer with suitable electronics.
The DPC200 combines two functions:
Measuring mode: The differential pressure is shown on the LCD display,and it is
given as a proportional 0...10V output signal.
Or the calculated volume flow is shown on the LCD display, and
it is given as a square root 0...10V output signal
Controlling mode: In the device software two setpoints can be entered.
The user can switch between the setpoint via potential free contact input.
The function of the device is to reach and maintain the setpoint.
To accomplish this, the measured sensor value is compared
with the activated setpoint, and the output signal is calculated
from the difference.
The PI controlling output signal is given as a 0...10V signal e.g.
for activating directly a fan.
Additional adjustments are:
Maximum output voltage to limit the PI controlling signal.
P- and I- parameter to adjust the control.

3
Dimensions
Electricalconnection
After opening the front cover, the electrical connection is made by using screw terminals.
Terminals:
1+ 2- Excitation 10...30 Vdc
or 24 Vac (+/-15%)
3+ 4- Output0...10V
5 6 floating contact input for
setpoint 1 or 2
Readjustment of the zero point
The zero point can be, regardless of the menu, readjust with a small bar magnet.
Adjustment:
The device is not within the menu.
Remove the pressure connections from the device.
Touch with the bar magnet the side of the zero point adjustment.
The new zero point will be stored.
NSsideofadjustment
zeropoint

Mounting
The differential pressure controller DPC 200 is designed for wall mounting.
Installation must be done vertically.
The connection of the pressure lines is performed with plastic tubing, inner diameter ø5 mm and ø6 mm.
Device is position depended, therefore it is important that the assembly is vertical.
4
Operation
Start up:
- The device must be mounted vertically.
- All connections must be connected in accordance with this manual.
- The supply voltage must be controlled.
Factory setting in the delivered state:
The DPC200 is delivered with the following factory settings:
Operating mode: measuring mode
Zero point: adjusted to measuring range
End point: adjusted to measuring range
Setpoint 1: about 75% of the measuring range
Setpoint 2: about 25% of the measuring range
Max. Voltage: maximum output voltage: 10,0 V
P-parameter: 50
I-parameter: 3,15
k-factor: 70
controlling mode: normal
T1 - Button 1
T2 - Button 2
 

5
Adjustment:
Menu structure:
unit: The device can use metric or imperial units.
operation mode: In the software menu two operating modes can be set.
‘controlling mode’ and ‘measuring mode’.
parameter: The device can use differential pressure (Pa or InH2O)
or volume flow (m3/h or cfm)
k-factor: For volume flow calculation, a k-factor can be entered.
Range 1...1000, at higher measuring range maximum
k-factor for 32.000 m3/h (18.800 cfm).
Measuring range 50 Pa: maximum k factor = 1000
Measuring range 500 Pa: maximum k factor = 1000
Measuring range 1000 Pa: maximum k factor = 1000
Measuring range 4000 Pa: maximum k factor = 500
Volume flow calculation:
V = k · ∆∆
∆∆
∆pwith V = volume flow (m3/h or cfm)
k = k-factor
∆p = diff. pressure (Pa or InH2O)
Setpoints: Two setpoints can be set from 0% to 100% of the
delivered measuring range.
Volume flow setpoints depend on k-factor and at
least 5% differential pressure.
maxUout: Maximum output voltage can be set from 0,0 V to10,0V.
P-parameter: P-parameter for PI-algorithm can be set 0...1000.
I-parameter: I-parameter for PI-algorithm can be set 0,00...100,00
controlling mode: The controlling mode can be changenin ‘normal’ or ‘invers’.

5
Adjustment:
controlling mode
∆P = 150 Pa (1)
Press button T1
about 2 seconds
to start menu
menu
unit
metric
Press
button T2
operating mode
measuring mode
parameter
diff. pressure
unit
imperial
parameter
volume flow
fan k-factor
k = 70
Button T1: reset
Button T2: set
Button T1: confirm
Display flashes once
operating mode
controlling mode
parameter
diff. pressure parameter volume flow
fan k-factor
k = 70
Button T1: reset
Button T2: set
Button T1: confirm
Display flashes once
setpoint 1
50 Pa
setpoint 2
250 Pa
Button T1: reset
Button T2: set
Button T1: confirm
Display flashes once
Button T1: reset
Button T2: set
Button T1: confirm
Display flashes once
Button T1: reset
Button T2: set
Button T1: confirm
Display flashes once
Button T1: reset
Button T2: set
Button T1: confirm
Display flashes once
Button T1: reset
Button T2: set
Button T1: confirm
Display flashes once
output voltage
U= 10,0 V
P - parameter
50
I - parameter
3,15
controlling mode
normal controlling mode
invers
back and confirm
Press button T2
to remain menu
menu
controlling mode
∆P = 150 Pa (1)
Press button T1
To leave menu
Press
button T2 Press
button T2
Press
button T2
Press
button T2 Press
button T2
Press
button T2
Press
button T2 Press button T2
Press
button T2
Press
button T2
Press
button T2
Press
button T2
Press
button T2
Press
button T2
Press
button T2
Press
button T1
Press button T1
Press
button T1 Press
button T1
Press
button T1

Technical data
Measuring medium: Air or non-aggressive gases
Measuring principle: Silicon diaphragm with spring and differential transformer
Measuring ranges: 0...50 Pa, 0...500 Pa, 0...1000 Pa, 0...4000 Pa
Overpressure protection: 0,2 bar
Static pressure: Max. 0,2 bar
Pressure connections: Hose line ø5 mm and ø6 mm
Case: Case polyamid, cover ABS
Supply voltage: 15...30 Vdc or 24 Vac ± 15 %
Electronic protection against reversed polarization
Current consumption: Approx. 10 mA @ 10Vdc; 12 mA @ 24 Vdc
Output: 0...10V
Display: LCD-Display, 2x16 characters
Mode: Measuring mode or controlling mode
Controlling algorithm: PI algorithm
Setpoints: 2 setpoints adjustable within software,
Setpoints are selectable with floating contact input
Protection class: IP 54 acording EN 60529
Ambient temperature: -10...+50 °C
Storage temperature: -25...+60 °C
Weight: Approx. 250 g
Mounting: Vertical, position dependence by turning of 90°: approx. 25 Pa
Interference emmission: According EN 50081-2, EN 50082-2, CE
Influences limits: Zero error: ± 0,75 %
Sum of linearity and hysteresis
(depends on measuring range): ± 0,5 % ... ± 1 %
Temperature drift, zero point: ± 0,3 % / 10 K
Temperature drift, span: ± 0,2 % / 10 K
Differential Pressure controller DPC200-EP500 Order No. 2567
Measuring range: 500 Pa
Differential Pressure controller DPC200-EP1000 Order No. 2568
Measuring range: 1000 Pa
Differential Pressure controller DPC200-EP4000 Order No. 2569
Measuring range: 4000 Pa
Differential Pressure controller DPC200-EP50 Order No. 2559
Measuring range: 50 Pa
Mountingset M-DS Order No. 25110
with screws, bleeders and 2m plastic tube
Arthur Grillo GmbH · Am Sandbach 7 · 40878 Ratingen
Telefon 0 21 02 - 47 10 22 · Telefax 0 21 02 - 47 58 82
www.grillo-messgeraete.de · [email protected] · www.sensor-store.de
09.13