88DS-DPD-EN-000 - 28 / 11 / 18www.sentera.eu

DPDDual high resolution differential pressure sensor with display

S.1.6.O.71

Key features• 2 analog or 2 digital outputs (PWM - open collector)

• Modbus RTU (RS485) communication

• Selection of differential pressure or air volume mode* / readout via Modbus for each sensor

• Modbus registers reset function (factory preset values) for each sensor

• Independent calibration of the sensors

• Implemented K-factor (for air volume measurement)

• Independent response time selection for each sensor

• 4 LED display for displaying differential pressure and air volume flow

• Aluminium pressure connection nozzles

* Only when K-factor of the fan is known (consult the datasheets)

Technical specifications

Outputs 2 analog / 2 digital outputs: 0—10 VDC / 0—20 mA / PWM (open collector) - 1 kHz

Load resistance0—10 VDC mode ≥ 50 kΩ0—20 mA mode ≤ 500 Ω

PWM mode ≥ 50 kΩ

Maximum power consumption

DPD-F 2,28 W

DPD-G 3,45 W (VAC) / 1,89 W (VDC)

Average power consumption in normal operation

DPD-F 1,71 W

DPD-G 2,48 W (VAC) / 1,42 W (VDC)

ImaxDPD-F 95 mA

DPD-G 230 mA (VAC) / 105 mA (VDC)

Selectable pressure range limits Minimum control range span: 50 Pa

Operating modesDifferential pressure

Air volume*

Accuracy ± 2 % per year

Response time 0,1—10 s, free selectable

Protection standard IP65 (according to EN 60529)

Ambient conditionsTemperature -5—65 °C

Rel. humidity < 95 % rH (non-condensing)

* Only when K-factor of the fan is known (consult the datasheets)

Article codesOperating ranges Supply Connections

DPD-G-1K00—1.000 Pa

13—26 VAC / 18—34 VDC 3-wire

DPD-F-1K0 18—34 VDC 4-wire

DPD-G-2K00—2.000 Pa

13—26 VAC / 18—34 VDC 3-wire

DPD-F-2K0 18—34 VDC 4-wire

DPD-G-4K00—4.000 Pa

13—26 VAC / 18—34 VDC 3-wire

DPD-F-4K0 18—34 VDC 4-wire

DPD-G-10K00—10.000 Pa

13—26 VAC / 18—34 VDC 3-wire

DPD-F-10K0 18—34 VDC 4-wire

Area of use• Fan / pressure control, VAV (Variable Air Volume) and CAV* (Constant Air

Volume) modes

• Pressure / airflow monitoring in clean rooms

• Clean air and non-aggressive, non-combustible gases

• For indoor use only

* Only when K-factor of the fan is known (consult the datasheets)

Modbus registers

The Sensistant Modbus configurator allows you to easily monitor and/or configure Modbus parameters. Designed to be used in combination with PDM or DPOM modules.

The parameters of the unit can be monitored / configured through the 3SModbus software platform. You can download it from the following link: https://www.sentera.eu/Downloads/Index/ENG

You can find register maps in the mounting instructions. Download them from: https://www.sentera.eu/Product/Index/

Caution: If a G-type article is using the same AC power supply source (transformer) as F-type article, a SHORT CIRCUIT may occur when the power supply and analog signal terminals are connected to the same common ground! In this case always connect different article types to separate AC transformers or use the same article version.

If an AC power supply is used with any of the units in a Modbus network, the GND terminal should NOT BE CONNECTED to other units on the network or via the CNVT-USB-RS485 converter. This may cause permanent damage to the communication semiconductors and/or the computer!

Standards

• Low Voltage Directive 2006/95/EC

• EMC Directive 2004/108/EC: EN 61326

• WEEE Directive 2012/19/EU

• RoHs Directive 2011/65/EU

The DPD series are compact dual differential pressure transmitters with high resolution and a four, 7-segment LED display. They provide two analog / digital outputs with selectable minimum and maximum pressure limits. The transmitters have built-in high resolution differential pressure sensors, with an independent calibration and K-factor setting. They are equipped with Modbus RTU communication which makes the transmitters suitable for a wide range of applications.

89www.sentera.euS.1.6.O.71

DPDDual high resolution differential pressure sensor with display

DS-DPD-EN-000 - 28 / 11 / 18

1 2

3

4

5

ON/OFF

1 2

3

4

5

ON/OFF

Settings

1 - Internal pull-up resistor jumpers (JP1, JP2)

* The relevant PWM output is connected to an internal +3,3 VDC or +12 VDC

source**

The relevant PWM output has to be

connected to external voltage source via external pull-up resistor

2 - Sensor calibration and Modbus register reset tact switches (SW1, SW2)

Push tact switch SW1 to start sensor 1 calibration / Modbus registers reset

Push tact switch SW2 to start sensor 2 calibration / Modbus registers reset

3 - Sensor calibration and Modbus registers reset indication

Blinking blue(as defined)

Modbus register factory reset or sensor calibration

4 - Modbus communication indication Blinking green Transmitting / receiving

5 - Operating LED indication Cont. green Normal operation

* indicates closed position of the jumper.**The voltage sources depend on the values stored in holding registers 19 and 29.

Operational diagram(s)

0 10 20 30 40 50 60 70 80 90 100Differential Pressure Range [%], Pa

Out

put

[%]

10

20

30

40

50

60

70

80

90

100

Control Range Minimum

Control Range Maximim

VDC,mA,

PWM

Wiring and connectionsVin Positive DC voltage / AC ~

GND Ground / AC ~

A Modbus RTU (RS485) signal A

/B Modbus RTU (RS485) signal /B

AO1 Analog / digital output 1 (0—10 VDC / 0—20 mA / PWM)

GND Ground

AO2 Analog / digital output 2 (0—10 VDC / 0—20 mA / PWM)

GND Ground

Connections

Cable cross section max. 1,5 mm2

Cable gland clamping range 3—6 mm

Connecting tube diameter 6—7 mm

Fixing and dimensions

DPD

+ _

80

6585

2x Ø 6

46

24

20

15 10,5

2x Ø 3,449

52

Packaging

H

W

L

Article Packaging Length[mm]

Width[mm]

Height[mm]

Net weight

Gross weight

DPD

Unit (1 pc.) 95 85 70 0,15 kg 0,21 kg

Carton (10 pcs.) 495 185 87 1,50 kg 2,23 kg

Box (60 pcs.) 590 380 280 9 kg 13,95 kg