DPC Precision Digital Mass Flow Controller

Aalborg, DPC07S-V0L6-AA2, DPC Precision Digital Mass Flow Controller with Multi-Gas FunctionalityFeatures:Simultaneously displays Mass Flow, Volumetric Flow, Pressure and TemperatureMulti-Gas functionality: support for 90 different gases and gas mixes"User Defined Mixture" functionality allows to create and store up 20 custom gas mixes with up to 5 different gases eachQuick (100-150 ms) response timeStandard accuracy ± (0.5% RD + 0.2% FS)200 to 1 turn-down ratioTwo programmable mass flow rate totalizersHigh, Low or In Range Alarms with preset action delay for Mass Flow, Temperature and PressureUser programmable mass flow rate Pulse Output (via SSR)Extensive Self Diagnostics with status LED or OLED indicationAll 3 user selectable analog input and output interfaces are standard: 0-5Vdc, 0-10Vdc, 4-20mATwo user selectable digital communication interfaces (RS-232 and RS-485) are standardUniversal 12-26 Vdc power supply inputFree, easy-to-use configuration and calibration software (RS-232 / RS-485)Programmable set point table with ramping up/down capability up to 16 stepsDPC series precision digital mass flow controller provides accurate and stable control of mass flow rates of process gases. With simultaneous displays of Mass Flow, Volumetric Flow, Pressure and Temperature parameters it can be used in a variety of industries: scientific and analytical applications, bioreactors and surfacedepositions, gas sampling, manufacturing and metrology activities. DPC flow controllers support various functions including: user selectable local, analog, digital or program set point control, two programmable flow totalizers, low, high or range flow, temperature and pressure alarms, automatic zero adjustment (activated via local or communication interface), programmable SSR relay, programmable 0-5 Vdc, 0-10 Vdc or 4-20 mA analog inputs and outputs, user-programmable pulse output (via SSR) and extensive self-diagnostics functionalities. DPC differential pressure mass flow controller feature totalizer with batch processing mode (0.5% RD + 0.2%FS) standard accuracy, 200:1 turn-down ratio and less than 150 ms response time. Significant savings are apparent, comparing to the cost of a single DPC embodying these features with that of acquiring and installing multiple, application-specific devices.Operation of DPC flow controller is based on the measurement of the differential pressure across specially designed restrictor flow elements. The restrictor flow element is designed to establish laminar flow across the entire range of the instrument's operation from 0 to 133% of full scale range. A high accuracy and high resolution differential pressure sensor is utilized to measure pressure drop across a laminar fl ow channel, which is linearly proportional to volumetric flow rate. To convert volumetric flow into mass flow, high accuracy and high resolution absolute pressure and temperature sensors are utilized. Based on data from the sensors and gas properties from the built-in data base of the instrument, the micro-controller calculates volumetric and mass flow.