Arthur Grillo DPC200-AC User manual

Installation and operation manual
DPC200-AC
DIFFERENTIAL PRESSURE CONTROLLER
Low pressure with PI-control-mode
Doc.-no.: DPC200-AC_01_UK Issue: 07/2019

2Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
Manufacturer:
Phone:
Fax:
E-mail:
Website:
Issue:
Doc.-no.:
Arthur Grillo GmbH
Am Sandbach 7
40878 Ratingen
0 21 02 - 47 10 22
0 21 02 - 47 58 82
[email protected]
www.grillo-messgeraete.de
www.sensor-store.de
07/2019
DPC200-AC_001_EN
This documentation including all parts is protected by copyright.Any utili-
sation or modication other than permissible under the strict limitations of
copyright law is prohibited and liable to prosecution without the approval
of the Arthur Grillo GmbH.This applies in particular to duplications, trans-
lations, microlming and storage and processing in electronic systems.

3
Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
TABLE OF CONTENT
Table of content
1 General safety instructions
1.1 Signal words for safety instructions
1.2 Used pictograms and symbols
1.3 General notes
2 Product description
2.1 Type plate
2.2 Intended use
2.3 Functional description
3 Installation
3.1 Dimensions
3.2 Wall mounting
4 Start up
4.1 Overview DPC200-AC
4.2 Schematic view inside
4.3 Pressure connections
4.4 Electrical connection
4.5 Zero adjustment
5 Operation
5.1 Start menu
5.2 Menu structure
5.3 Measuring mode
5.4 Control mode
5.5 Adjustable parameters
5.6 Threshold calculation
5.7 Function alarm output
6 Maintenance
7 Warranty
8 Troubleshooting
9 Disposal
10 Specications     
10.1 CE-labelling
04
04
04
04
05
05
05
05
06
06
06
07
07
07
07
08
08
08
08
09
10
11
12
13
13
13
14
14
14
15
16

4Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
GENERAL SAFETY INSTRUCTIONS
1. General safety instructions
1.1 Signal words for safety instructions
The safety instructions in this operation manual are designed to prevent hazards.They can
be found in the operation manual before an operation / task / activity is described, which
can entail a possible hazard.
Identication of a hazard with a low risk, which can lead to material
damage or minor or moderate bodily injuries.
CAUTION
1.2 Used pictograms and symbols
In this manual the following symbols are used:
General hazard symbol (dan-
ger, warning, caution)
Signal word for important information regarding the product, which
needs to be specically pointed out.
NOTICE
Hazard word Type of hazard
Hazard source
Hazard prevention
1.3 General notes
This manual contains information for installation and operation of
the pressure controller and is exclusively for the operator and ex-
pert staff. The guidelines in this manual will help to avoid danger
and downtime.
NOTICE
General information

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Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
2. Product description
The differential pressure controller DPC200-AC measures low pressure of inert gases,
particularly of air.
2.1 Type plate
2.2 Intended use
This device is primarily intended for use with air conditioning systems, room pressure
control or lter control with continuously variable speed fans. It can be operated solely as
a sensor (measuring mode) or closed loop controller for pressure / volumetric ow rate
control. As analog output the operator can use a signal from 0 ...10 V DC. Depending on
the settings the signal has different meanings:
1. If the device is used as a pressure sensor, the output signal is proportional to the
measured pressure.
2. As a volume ow sensor the device outputs a square root signal.
3. With closed loop pressure or volume ow the output signal stands for the control
variable of the PI-control.
2.3 Functional description
A soft silicone diaphragm is used as sensor. Under the inuence of the differential pressure
the diaphragm displaces a measuring spring until the spring force compensates for the
pressure pushing on the diaphragm. A contactless differential transformer and suitable
electronics convert this displacement into a continuously variable output voltage signal.
The DPC200-AC provides two function options:
1. On the one hand it is used as a measuring device.In the measuring mode the differential
pressure is shown on the display, and a proportional 0...10V DC output signal is provided.
2. Besides the measuring mode the DPC200-AC also can be operated in a control mode.
Two setpoints can be adjusted in the device and can be selected with the potential
free contact input. The PI-Algorithm matches the measured differential pressure with
the setpoint and operates the control variable so that a constant pressure results.The
control variable is given as a 0...10V DC output signal.
Instead of the quantity ‘differential pressure’ also the quantity ‘volume ow’ can be used
for measuring and for control.
differen gases
1. Product name
2. Supply voltage
3. Signal output
4. Measuring range
5. Serial no.
6. Manufacturer
1.
2.
3.
4.
5.
6.

6Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
INSTALLATION
3. Installation
The differential pressure controller DPC200-AC is designed for wall mounting.
• The mounting surface must be solid enough and vibration-free.
• The environment has to fulll the ambient climatic conditions as given in the technical
data.
Material damage
Read the manual carefully before installation and operation
Only experienced stuff may connect the device and bring it into
operation.
CAUTION
3.1 Dimensions
All dimensions in mm.
ø6
ø5
M16x1,5
4,5
-+
104
54 95
70
• The device is position depended.
• The DPC200-AC must be mounted vertically.
NOTICE
3.2 Wall mounting
1. Hold the DPC200-AC against the wall. Mark the mounting holes.
2. Drill mounting holes for properly sized screws.
3. Put the screws through the housing mounting holes.
4. Tighten screws.

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Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
START UP
4. Start up
4.1 Overview DPC200-AC
1. Front cover
2. Cable gland
3. Pressure connection 1
4. Pressure connection 2
5. Cable gland
1.
2.
3.
4. 5.
4.2 Schematic view inside
Button T1 and T2 serve for the operation of the menu
4.3 Pressure connections
Connect all pressure connections properly with plastic tubing (inner diameter 5 or 6mm).
Button T1 Button T2

8Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
OPERATION
4.4 Electrical connection
1. Unscrew screws of the front cover.
2. Open front cover.
3. Use M16 cable glands for connecting wiring to terminals.
4.5 Zero adjustment
The output signal offset can be zeroed from the outside with a small bar magnet. Do not
use buttons T1 or T2.
Adjustment:
• Remove the tubing from the pressure
connections.
• Hold the bar magnet (N/S) as shown here
to the zero point adjustment for a short
period of time to activate an internal reed
switch.
The new zero point will be displayed and
stored.
5. Operation
5.1 Start menu
For operating the menu, unscrew the front cover to reach buttons T1 and T2.
N S

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Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
OPERATION
5.2 Menu structure

10 Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
OPERATION
5.3 Measuring mode
Display Action
ΔPMeasurement
200 Pa
Start menu: Press button T1 approx. two seconds
menu Press button T2 to get to the next menu item
unit metric
Press button T1 to switch between:
metric <=> imperial
Press button T2 to get to the next menu item
operating mode
control mode
Press button T1 to switch between:
measuring mode <=> control mode
Press button T2 to get to the next menu item
parameter
diff. pressure
Press button T1 to switch between:
diff. pressure <=> volume flow
Press button T2 to get to the next menu item
If selected parameter = diff. pressure
limit switch
150 Pa
Button T1: reset value
Button T2: set value
Button T1: conrm value, display ashes once
Press button T2 to get to the next menu item
backandconrm Press button T1 to leave the menu
Press button T2 to stay in the menu
Ifselectedparameter=volumeow
than follows the additional input for the k-factor
fan k-factor
k = 70
Button T1: reset value
Button T2: set value
Button T1: conrm value, display ashes once
Press button T2 to get to the next menu item
limit switch
300 m³/h
Button T1: reset value
Button T2: set value
Button T1: confirm value, display flashes once
Press button T2 to get to the next menu item
backandconrm Press button T1 to leave the menu
Press button T2 to stay in the menu

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Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
OPERATION
5.4 Control mode
Display Action
ΔPMeasurement
200 Pa
Start menu: Press button T1 approx. two seconds
menu Press button T2 to get to the next menu item
unit metric
Press button T1 to switch between:
metric <=> imperial
Press button T2 to get to the next menu item
operating mode
control mode
Press button T1 to switch between:
measuring mode <=> control mode
Press button T2 to get to the next menu item
parameter
diff. pressure
Press button T1 to switch between:
diff. pressure <=> volume flow
Press button T2 to get to the next menu item
If selected parameter = diff. pressure
resp. after the input of the k-factor follows:
setpoint 1
50 Pa
Button T1: reset value
Button T2: set value
Button T1: conrm value, display ashes once
Press button T2 to get to the next menu item
setpoint 2
250 Pa
Button T1: reset value
Button T2: set value
Button T1: confirm value, display flashes once
Press button T2 to get to the next menu item
output voltage
U = 10,0 V DC
Button T1: reset value
Button T2: set value
Button T1: confirm value, display flashes once
Press button T2 to get to the next menu item
P - parameter
50
Button T1: reset value
Button T2: set value
Button T1: confirm value, display flashes once
Press button T2 to get to the next menu item
l - parameter
3,15
Button T1: reset value
Button T2: set value
Button T1: confirm value, display flashes once
Press button T2 to get to the next menu item
controlling mode
positive / heating
Press button T1 to switch between:
positive / heating <=> negative / cooling
Press button T2 to go to the next menu
backandconrm Press button T1 to leave the menu
Press button T2 to stay in the menu

12 Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
OPERATION
5.5 Adjustable parameters
Parameter Selection or parameter range Default setting
Unit Metric or imperial metric
Operating
mode: Measuring mode or control mode measuring mode
Parameter Differential pressure ΔP [Pa] or [InH2O]
Volume flow V [m3/h or cfm]
differential
pressure ΔP [Pa]
K-factor:
Volume flow calculation according to: V = k · √Δp
with: V = Volume flow in [m3/h]or [cfm]
k = flow factor, adjustment range: 1...10,000
Δp = differential pressure in [Pa]or [InH2O]
Volume flow range up to 999,999 m3/h
Maximum volume flow (Vmax)
Measuring range: 50 Pa, k=10,000 Vmax = 70,710 m3/h;
Measuring range: 500 Pa, k=10,000 Vmax = 223,607 m3/h;
Measuring range: 1000 Pa, k=10,000 Vmax = 316,228 m3/h;
Measuring range: 2000 Pa, k=10,000 Vmax = 447,214 m3/h;
Measuring range: 4000 Pa, k=10,000 Vmax = 632,456 m3/h;
Measuring range: 6000 Pa, k=10,000 Vmax = 774,597 m3/h
K = 70
Limit values:
Differential pressure from 0 % up to 100 % of measuring range.
Volume flow from 0.5 % up to 100 % of measuring range, k-factor is
considered.
OFF
Nominal
values
(setpoints):
Differential pressure from 0 % up to 100 % of measuring range.
Volume flow from 0.5 % up to 100 % of measuring range, k-factor is
considered.
placeholder
1: 8888
2: 8888
Output
voltage: 0…10 V DC Uout = 10 V DC
P-gain: 0...1000 P = 50
I-gain: 0…100 I = 3.15
Control
characteri-
stic:
positive/(heating): Control deviation = set value – actual value
The output increases when: Set value > actual value
negative/(cooling): Control deviation = actual value – set value
The output increases when:Actual value > set value
positive / heating
Ifselectedparameter=volumeow
than follows the additional input for the k-factor
fan k-factor
k = 70
Button T1: reset value
Button T2: set value
Button T1: conrm value, display ashes once
Press button T2 to get to the next menu item

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Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
OPERATION
5.6 Threshold calculation
NOTICE The device requires a minimum pressure to calculate a volume
ow.
Minimum pressure = 0.5 % of the product mesuring range
PRESSURE < 0.5 % measuring range = Display shows 0 m3/h
Minimal ow: V_min = √(0.005 x measuring range) x k
Maximal ow: V_max = √(measuring range) x k
Exampel: Threshold calculation
The set limit value must be between minimum and maximum ow.
As reference device we choose DPC200-AC with a measuring range of 0...1000 Pa.
The limit value calculation formula: V = √ΔP × k
Given values:
Measuring range = 0...1000 Pa; k-factor (k) = 116; Limit value (V) = 1,200 m3/h
It follows: ΔP= (V / k)2 = (1,200 / 116)2= 107 Pa > 5 Pa = 0.5 % of the measuring range
Minimal ow: V_min = √(0.005 x 1000) x 116 = 259 m3/h
Maximal ow: V_max = √(1000) x 116 = 3,668 m3/h
Result: The limit value of 1,200 m3/h is betweenV_min and V_max and adjustable by
our DPC200-AC-R (0...1000 Pa).
5.7 Function alarm output
The DPC200-AC has an open collector alarm output; depending on the operating mode
the function is different. At the alarm event a contact between terminal no. 7 and no. 8
gets low-resistive and can be loaded with a maximum of 30V DC/ 30 mA.When the alarm
is switched off the contact will be high-resistive.
During alarm state in the control mode / measuring mode an exclamation point (!)
is displayed (2nd line / 16th character).
Control mode:In order to recognize the limits of control, the alarm output in the control
mode refers to the set maximum output voltage (MaxUout). MaxUout can be set in the menu
item „output voltage“.
In the default setting the value is set to 10 V DC.
AlarmON:Outputvoltagefor12secondsconstantlygreaterthan:0.95•MaxUout
Alarm OFF:Output voltage for 12 seconds constantly less than: 0.9•MaxUout
Measuring mode: For limit value monitoring a limit value can be entered.This value is
set in the menu item „limit switch“.The previously set parameters are taken into account
(unit, parameter, k-factor and the measuring range).
As default setting the limits are not active - Display - 2nd line: „OFF“
AlarmON:Measurementfor12secondsconstantlygreaterthan1.0•limitvalue
AlarmOFF:Measurementfor12secondsconstantlylessthan0.95•limitvalue

14 Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
6. Maintenance
The DPC200-AC contains no wearing or consumable parts. Servicing is not required.
On request, Arthur Grillo GmbH offers an annual calibration with factory certicate.
For information, please contact:
7. Warranty
Warranty and liability claims for personal and property damage are excluded if they are
caused by one or more of the following reasons:
• Improper use of the device.
• Improper installation, commissioning, operation and maintenance of the device.
• Unauthorized modications to the device beyond the intended use.
• Disasters due to external inuences and force majeure.
8. Troubleshooting
9. Disposal
Dispose of parts so as not to endanger the human health or environment. Follow the laws
in the country of use for disposing of electronic components and devices during disposal.
Description Activity
Display does not show
anything Check electrical connection
Measurement stays zero Function test with a slight pressure increase in measu-
ring mode for differential pressure
Measuring error Perform zeroing as described in chapter 4.5.
Error remains Contact manufacturer
Arthur Grillo GmbH Phone: +49 21 02 - 47 10 22
Am Sandbach 7 Fax: +49 21 02 - 47 58 82
40878 Ratingen E-mail: [email protected]
WARRANTY & SUPPORT

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Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
SPECIFICATIONS
10. Specications
Measuring medium:
Measuring principle:
Lowest span:
Highest span:
Overpressure protection:
Static pressure:
Pressure connections:
Enclosure:
Electrical connections:
Supply voltage:
Output:
Alarm output:
Display:
Mode:
Controlling algorithm:
Setpoints:
Protection class:
Ambient temperature:
Storage temperature:
Weight:
Mounting:
Interference / emission:
Inuences / limits:
Air or inert gases
Silicon diaphragm with spring and di󰀨erential transformer
0...50 Pa
0...6000 Pa
0.2 bar
max. 0.2 bar
tubing 5 mm ø or 6 mm ø
UL 94 HB; Case polyamid, cover ABS
cable inlet M16x1.5, screw terminal
Electronic protection against reversed polarization
90...260 Vac (50/60 Hz)
0...10 V (Imax = 1 mA / Rmin = 10 kOhm)
Open Collector, max. 30 V / 30 mA
LCD-Display, 2 x16 characters
Measuring mode or controlling mode
PI
2 setpoints adjustable within software,
Setpoints are selectable with oating contact input
IP 54 according EN 60529
-10...50 °C
-25...60 °C
approx. 250 g
vertical, position dependence by turning of 90°: approx. 25 Pa
according EN 61000-6-2, EN 61000-6-3, CE mark
Zero error: ± 0.75 %
Sum of linearity and hysteresis
(depends on measuring range): ± 1 %
Temperature drift, zero point: ± 0.3 % / 10 K
Temperature drift, span: ± 0.2 % / 10 K

16 Doc.-no.: DPC200-AC_01_EN Issue: 07/2019
CE-LABELLING
10.1 CE-labelling
As an electric device the DPC200-AC falls within the scope of the directive 2004/108/
EG (EMV-directive). In the scope of the EMV-directive the following norms were applied:
DIN EN 61000-6-2:2006-03
correction 1:2011-06
Electromagnetic compatibility (EMC) - Part 6-2: Generic
standards - Immunity for industrial environments
DIN EN 61000-6-3:2011-09
Electromagnetic compatibility (EMC) - Part 6-3: Generic
standards - Emission standard for residential, commer-
cial and light industrial environments
You can order the Declaration of Conformity at:
Arthur Grillo GmbH
Am Sandbach 7
40878 Ratingen
Phone: 0 21 02 - 47 10 22
Fax: 0 21 02 - 47 58 82
E-mail: [email protected]