Teledyne’s 6700U leverages ultraviolet absorption (UVA) detection to measure for certain dissolved organic substances in water treatment and wastewater applications. Absorption of UV light at the 254 nm band is an indication of the presence of disinfection byproducts (DBPs), tri-halo methanes (TTHM) and halo-acetic acids (HAA). The 6700U provides an on-line measurement without reagents and utility gases required.
Method of Detection
The 6700U uses a stable, long-life xenon flash lamp to emit UV light through the optical path to the detector. In the presence of some dissolved organics, 254 nm light will be absorbed by the sample and the resulting loss of signal will be translated into a volumetric concentration.
Software
The LCD touchscreen gives the user a real-time reading as well as alarm status and push-button functionality on the main screen.
• Available measurements of COD (eq), DOC (uv), TOC (eq), BOD (eq), Abs254, SAC254, COD (UV), TOC (UV), BOD (UV), SAK254 (mg/l, cm-1, m-1, AU, mA.U.)
• One or two parameter analysis available
• Single or dual sequenced stream monitoring
• Optical path lengths of 22mm, 12mm, 6mm or 2mm available
• Analysis range from 0.05 to thousands of mg/L using internal dilution module
• Dual-compartment IP-65 powder-coated steel enclosure
• Long-life pulsed source xenon flash lamp minimizes maintenance
• Level switch with fast loop reservoir provides sample flow verification and alarms with low sample levels
• Auto-clean, auto-calibration or auto-blank functions as standard
• 3.8-inch touchscreen
• 2 x 4-20 mA outputs
• 4 x SPDT alarm contacts
• RS-485 MODBUS-RTU communications
• Integral data-logger with USB port for download
