DO 3650(可以測水中含氧量也可以測空氣中含氧量) Maker: orbisphere, 由以下部份組成: (1)Instrument, Substance measured: Oxygen, Configuration: Portable battery powered, Number of channels: 1, RS232 (serial) output, Language: English, Measurement units: ppm, DO2/%, gas phase. (2)   EC Sensor, Substance measured: Oxygen, Sensing head material: PEEK, Guard ring: Silver, Maximum pressure: 20 bar, O-Ring: EPDM, Fast response to change in temperature. (3) Flow chamber in Delrin for the micrologger (3650). Includes check valve, 1 meter of inlet tubing, quarter turn flow valve, and outlet metal U-tube (6mm outside diameter). (replaces 32007B) Supplied with 2 connectors. MM = total length of cable. (4) Maintenance Kit for oxygen electrochem