1 High accuracy Wide range of Process measurements Extensive range of programmable features Built-in sensor energisation RS 232/485 and analogue interfaces IP65 sealed front panelGE DruckgDPI 270/280 SeriesDigital Process IndicatorsIntelligent MonitoringThe versatile DPI 270 (miniature) and DPI 280 (general) Series of digitalprocess indicators are smart instruments for use with a wide range ofprocess sensors and signal used with the Druck range of pressure transducers or transmitters,a direct reading in pressure is provided. The DPI 284/5 internal pressuresensor can be supplied up to 60 bar or external pressure sensor up to700 bar.
2 Direct input of thermocouples and PT 100 resistancethermometers is available for temperature application oriented software features enable the DPI 270/280series to be utilised for all measurement parameters and sensor types,making these panel meters suitable for many Process applications. Process functionsAlarmsUp to 4 open collector or 2 x SPST alarms are available:High or low, low with disable during start-up, on/off controller with director reverse action, high or low deviation. Alarm features include:Adjustable on/off delay in seconds, adjustable hysteresis, latching: non/manual reset/fail-safe. Operator adjustable detectionConfigurable functions allow detection of peak and/or valley.
3 Operatoraccess to view and reset. Dual scaling (DPI 28X only)Measurement can be displayed in either of two scale units ( bar andpsi). Each scale can have different formats and resolution. Togglebetween the two scales by assigning an operator function and gross/nett functionsTare off the current displayed reading and toggle between the gross andnett measurement values by assigning operator function keys. Analogue outputFor the DPI 27X, this option is programmable for 0/4-20mA, 0/1-5V or 0-10V. For the DPI 28X it is available as 0/4-20mA, 0-2V, 0/1-5 Vor 0-10V. Output is proportional to display reading, net and peak/valley orunlinearised communications (DPI 28X only)Optional, isolated, serial communications interface for full access to allinstrument functions and features.
4 Dual port RS 232 (for multi-dropconnection) or twisted pair RS 485 (for distributed multi-drop operation).Printer Output (DPI 27X only)Optional isolated RS232 printer output. Front key single print orcontinuous printing protection and calibration lockingInstrument configuration can be protected by a 4 digit data can be locked to guarantee calibration DPI 28X has 17 calibration correction points. This provides apowerful scaling facility for sensor linearity improvement and non-linearscaling for applications such as flow and tank volume measurement. Inaddition, the DPI 270/271 has square root Red Pen and MLink (DPI 27X only)Windows based MLink software configures the DPI 27X via an RS232link /infra red pen.
5 Fast and simple set up, ideal for 270/280 SeriesDigital Process IndicatorsTypical InstallationsThe DPI 270/DPI 280 Series can be used simply on the benchtop,rack mounted into an indication bank (below) or even trolleymounted for portable workshop applications (above).DPI 270/280 SeriesApplicationsLow Differential pressure /HVACUsed with LP Series sensors for a preciseindication of low pressure from just 1mbar FS. This combination is ideal for Pharmaceutical,Chemical and silicon Process facilitieswhere clean rooms need to be Leak TestingThe panel meter can be used as a pressuremeasurement device in a leak test for testing pressure seal input HOLD function can be used toread final pressure from a timer or Cell/Weighing The DPI280 'Auto cal' feature is designed foruse with load cells in weighing can remove deadweight errors on the weigh bridges, hopper contents, scalesof all sizes, either production or point of Level MonitoringLevel measurement and control of sewage,waste/potable water, oils, fuels.
6 Lubricants,dairy products, beverages,coolants and scaling functions achieveaccurate measurements of tank contents. Hydraulic TestingRugged Druck high pressure sensors(>3000 psi) can be used to test hydraulicsystems for example on automotive vehicles. Peak loads captured/recalled after the test toensure pressure safety limits are not CalibrationThe DPI280 connected to a PDCR 4010 withimproved accuracy to FS is suitable forcalibration of many pressure PV411 hand pump can generate manifold test pressures for multiple Process pressure MonitoringFor display of pressures on a Process pipelinesuch as water feeds, gas supply/distributionpiping.
7 Liquid or gas mA output used for relaying pressuredata from remote ControlIndicator alarm outputs used for temperaturecontrol on small ovens or heating options are output can be configured to providereverse output proportional to Display & MonitoringThe DPI282 can be connected to a humiditytransmitter to display the ambient conditionsof any outdoor or indoor via RS232/485 to a remote PC orvia analogue output to a local chart recorder. DPI 270 seriesMiniature 4 digit LEDP ressureTransducerHumidity& moistureDepth & LevelDifferentialPressureVery low pressureTemperatureRTDs, T/CPressure TransmitterDPI 280 seriesGeneral 41/2digit LEDDPI 284/285 Internal pressure SensorSPECIFICATIONSINPUTSV oltage 2000mV 100mV 20 Volt 10 Volt*Current 20mATemperatureThermocoupleRTD**External pressure TransducerMillivolt inputVoltage inputCurrent inputInternal pressure Transducer0 to 60 barOUTPUTSS ensor Excitation10 Volt regulated24 Volt unregulatedAlarms4 Open collectors2 Relay contacts* Includes 1-5V and 0-10V** PT100 and Ni100 Load Cells & forceSelect and state the model number when ordering overleaf DPI 284.
8 Also refer to general specifications and options (opposite).For use with external sensorsDirect pressure connectionDPI 280 DPI 281 DPI 282 DPI 283 DPI 284 DPI 285 DPI 270 Option JDPI 271 Option JDPI 272 Option JDPI 273 Option JAccuracyVoltage inputCurrent inputPressure input (typical)Temperature (Nominal)DisplayDisplay count rangeDisplay heightA/D resolutionDisplay updatePower SuppliesVac InputFrequency, Powerac Isolation (Input/Output)Vdc Inputdc Isolation (Input/Output)EnvironmentalOperating temperatureStorage temperatureHumidityPhysicalWeightPressur e Connnection (DPI 284/285 only)IP65 sealed front panelSafetyCE markedDPI FS ( FS linearised)
9 C-19999 to + bit (1 part in 200,000)10 per second90-132/200-264 Vac47 - 70Hz, 4 VA>2500 Vrms10-40V, 300mA @ 10V>500 Vrms-10 C to 60 C-40 C to 85 C0 to 90% RH non-condensing500 gmsG1/8 BSP or 1/8 NPTO ption (E)DPI C-1999 to + bit (1 part in 200,000)200msec Vac47 - 70Hz, 4 VA>2500 Vdc (1500 Vrms)-10 C to 60 C-40 C to 85 C0 to 90% RH non-condensing200 gmsStandardMeets CE requirements for safety, EMC immunity and emissionsOPTIONSM atched and tested with Druck sensorStandard CalibrationLinearised Calibration forimproved accuracyAnalogue output**0 to 20 mA (Option A)0 to 10 Vdc* Digital Output**RS232 (Option B)RS485 (Option C)Printer ouput (I)Power Supply24 Vac/48 Vac (Option K)DisplayGreen Display (Option G)Blank front Panel (Option F)Case1/8 DIN adaptor (Option M)IP 65 Cover (Option E)SpecialInfra red pen** (Option H)DPI 280 DPI 281 DPI 282 DPI 283 DPI 284 DPI 285 DPI 270 DPI 271 DPI 272 DPI 273 * Includes 1-5V and 0-2V.
10 (Option A on DPI 27X, option D on DPI 28X).** Provided with free configuration software to setup the DPI27X Series .** Only one of these options may be fitted on the DPI 28X and state the option codes required for each instrument when ordering overleaf (A), (B), (D)GENERALDPI 270/280 SeriesDigital pressure and Process IndicatorsDPI 280/281/282/283/284/285 DPI 270/271/272/273 pressure transducers and transmittersDruck manufacture an extensive range of pressure transducers andtransmitters, supplied to standard or custom AS STANDARD(1) Detailed user guide supplied with the instrument.(2)Calibration certificate for any matched sensor INFORMATIONThe unit can be ordered with or without sensor and calibration.