• Microprocessor based, high resolution, ultra stable electronics (no potentiometers)
• Three user-selectable ranges
• Signal & Range ID output：0-1 VDC and 4-20 mADC (isolated)
• Programmable auto ranging
• Range ID contacts (quantity 4) Form A normally open contacts, 3A@250 VAC resistive
• Two adjustable concentration alarm set points with programmable relay function Form C contacts, 3A@250 VAC resistive
• Programmable auto calibration with mode ID Form A normally open contacts
• Remotely operated calibration (customer supplied valves and 24 VDC signal)
• Self diagnostics with Form C failure contacts
• Full duplex RS-232 communication link
• Alphanumeric VF display for set-up and diagnostics
• Power：115/230 VAC 50/60 Hz