Description

ZFM digital mass flow meter

ZFM low cost aluminum or stainless steel digital thermal mass flow meters

Design Features

• Multi-gas/Multi-range functionality up to 8 bar (currently for 6 gases)
• Full scale covered flow ranges from 3.125 sml/min to 10 sl/min are available in seven models
• Standard accuracy ± (0.5% RD + 0.2% FS) based on actual calibration
• Universal 14-24 Vdc power supply input
• Supports up to 46 Engineering Units (including User-defined)
• Stores additional user- calibration table data for up to 10 gases
• Two programmable Totalizers indicate total gas quantity
• User-programmable Pulse Output (via SSR)
• High and low gas flow Alarm limits with preset delay interval
• One user-programmable solid-state relays with latch option
• User-selectable analog 0-5 Vdc, 0-10 Vdc, or 4-20mA outputs
• Internal conversion factors for up to 26 gases
• Digital interface (RS-232 or RS-485) test/configuration port, optional Modbus RTU with Isolated RS-485 transceiver)
• Multi-Drop capability of up to 247 units (RS-485 option)
• Automatic sensor zero offset adjustment (via digital interface or local push button)
• Extensive Self- diagnostic with status LED or OLED (optional) indication
• Local 128 x 64 high contrast OLED (optional) graphic display with joystick control
• Free, easy-to-use configuration and calibration software (RS-232/RS-485)