DPM07S-V0L6-A3, DPM Multi-Parameter / Multi-Gas Mass Flow MeterFeatures:Multi-Parameter functionality: Mass Flow, Volumetric Flow, Gas 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 (< 20ms) response timeStandard accuracy ± (0.5% RD + 0.2% FS)200 to 1 turndown 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 output interfaces are standard: 0-5Vdc, 0-10Vdc, 4-20mATwo user selectable digital communication interfaces (RS-232 and RS-485) are standardUniversal 9-26 Vdc power supply inputFree, easy-to-use configuration and calibration software (RS-232/RS-485)DPM series digital multi-parameter mass flow meter provides accurate measurements of mass flow rate, volumetric flow rate, pressure and temperature of process gases. It can be used in a variety of industries: scientific and analytical applications, bioreactors and surface depositions, gas sampling, manufacturing and metrology activities. Standard accuracy is +/- (0.5% RDG + 0.2% FS). Turn down ratio is 200:1. Response time is 10-20 ms. DPM flow meter support various functions including: 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 outputs, user-programmable pulse output (via SSR) and extensive self-diagnostics functionality. Significant savings become apparent when comparing the cost of a single DPM meter embodying these features with that of acquiring and installing multiple, application-specific devices.Operation of DPM flow meter 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 flow 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 microcontroller calculates volumetric and mass flow. In addition, the mass flow reading is accessible via the instrument analog interface which can be set by user to 0-5, 0-10 Vdc or 4-20mA mode.