Hach Sigma 950 Instrument Manual

Contents

Hach Sigma 950 Instrument Manual Manual pdf 56 page image

54Optional Device Installation7.5 Conductivity Probe7.5.1 Conductivity Probe ConnectionThe pre-amp (P/N 3369 or 3212) is required. Plug the probe into the pre-amp and plugthe pre-amp into the 950 Flow Meter.7.5.2 Conductivity Probe Programming1. From the Main Menu, select OPTIONS>ADVANCED OPTIONS>DATALOG.2. Highlight Select Inputs using the UP and DOWN soft keys and then press SELECT.3. Highlight Conductivity (COND.) using the UP and DOWN soft keys, then pressSELECT.4. Press CHANGE CHOICE to cycle between Logged and Not Logged, then pressACCEPT.5. Enter a logging interval using the numeric keypad, then press ACCEPT. Valid loggingintervals are shown on the status bar along the bottom edge of the display.6. Press CHANGE CHOICE to select the appropriate units (mS, uS). Press ACCEPT tocontinue.7. Select another channel to configure or press RETURN to back up one step. Press theMAIN MENU function key to return to the Main Menu.7.5.3 Conductivity Temperature ProgrammingNote: Conductivity measurements are only temperature compensated if the conductivitytemperature is enabled in the datalog.1. From the Main Menu, select OPTIONS>ADVANCED OPTIONS>DATALOG.2. Highlight Select Inputs using the UP and DOWN soft keys and then press SELECT.3. Highlight Conductivity Temperature (COND. TEMP.) using the UP and DOWN softkeys, then press SELECT.4. Press CHANGE CHOICE to cycle between Logged and Not Logged, then pressACCEPT.5. Enter a logging interval using the numeric keypad, then press ACCEPT. Valid loggingintervals are shown on the status bar along the bottom edge of the display.Table 20 Conductivity Pin AssignmentsPin Signal Description Wire ColorA +12 V dc whiteB signal ground blueC input 1 (4–20 mA dc) yellowD input 2 (4–20 mA dc blackE input 3 (4–20 mA dc) redF dissolved oxygen (+) greenG dissolved oxygen temp. probe(+) grayH conductivity (+) brownJ conductivity temp. probe purpleK not used orange