88 DS-DPD-EN-000 - 28 / 11 / 18 www.sentera.eu DPD Dual 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 resistance 0—10 VDC mode ≥ 50 kΩ 0—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) Imax DPD-F 95 mA DPD-G 230 mA (VAC) / 105 mA (VDC) Selectable pressure range limits Minimum control range span: 50 Pa Operating modes Differential pressure Air volume* Accuracy ± 2 % per year Response time 0,1—10 s, free selectable Protection standard IP65 (according to EN 60529) Ambient conditions Temperature -5—65 °C Rel. humidity < 95 % rH (non-condensing) * Only when K-factor of the fan is known (consult the datasheets) Article codes Operating ranges Supply Connections DPD-G-1K0 0—1.000 Pa 13—26 VAC / 18—34 VDC 3-wire DPD-F-1K0 18—34 VDC 4-wire DPD-G-2K0 0—2.000 Pa 13—26 VAC / 18—34 VDC 3-wire DPD-F-2K0 18—34 VDC 4-wire DPD-G-4K0 0—4.000 Pa 13—26 VAC / 18—34 VDC 3-wire DPD-F-4K0 18—34 VDC 4-wire DPD-G-10K0 0—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.