User manual EUTECH INSTRUMENTS ALPHA DO 1000 DISSOLVED OXYGEN CONTROLLERTRANSMITTER

[. . . ] Instruction Manual lpha-DO 1000 Dissolved Oxygen Controller/Transmitter Technology Made Easy . . . 68X242101 Rev 3, 06/04 Preface This manual serves to explain the use of the lpha-DO1000 series Dissolved Oxygen controller/transmitter. The manual functions in two ways: firstly as a stepby-step guide to help the user operate the instrument. Secondly, it serves as a handy reference guide. This instruction manual is written to cover as many anticipated applications of the lpha-DO1000 Dissolved Oxygen controller/transmitter. [. . . ] A Compare the current measured temperature on the controller display to a thermometer known to be accurate. Note down the correct temperature value. HOLD SETUP °C Press the or keys to scroll the lower display to match the correct value. The upper display will now show the offset value. You can offset the temperature 25. 0 values to ± 5 °C. Press the ENTER key to confirm your selection. Continue with additional Advanced Set-up procedures, or return to the Measurement mode by pressing the or keys (escape) simultaneously. HOLD SETUP se HOLD SETUP °c 2. 6. 17 Operating Manual alpha DO 1000 7. 4. 3 Setting Manual Temperature Compensation Note: This parameter is blanked out when the controller is set for ATC operation. For manual temperature compensation, you can set two different temperatures: process and calibration. This allows calibration at a temperature other than your process temperature. Example: setting a calibration temperature of 25 °C lets you calibrate using standard buffer solutions at 25 °C, even if your process temperature is a different temperature. Select "ATC oFF" as described above in section 7. 4. 1 2. The upper display shows the current process temperature and the lower display shows "P. °C" to indicate process temperature. Press the or keys to adjust the process temperature value. You can adjust the value from ­ HOLD SETUP 9. 9 to 125 °C. After you set the process temperature value, press the ENTER key. c calibration temperature and the lower display shows "C. °C" to indicate calibration temperature. Press the or keys to adjust the calibration temperature value. You can adjust this value from ­ °C 9. 9 to 125 °C. Press the ENTER key to confirm your selection. Continue with additional Advanced Set-up procedures, or return to Measurement mode by pressing the or keys (escape) simultaneously. FF 25. 0 25. 0 7. 5 Control Relay A/Control Relay B (SP1/SP2) sub-function The SP1 option sets the operating parameters for Relay A; and SP2 for relay B. Since these groups have the same set-up parameters, they are described together. HOLD SETUP HOLD SETUP HOLD mg/l SETUP HOLD SETUP HOLD mg/l SETUP HOLD SETUP Sp1 6. 20 Sp1 L Sp1 02 . 0 Hys O. 0 OF. 0 18 Operating Manual alpha DO 1000 7. 5. 1 1. Entering the Set point 1 (or Set point 2) sub-function Enter Advanced Set-up mode. Push the ENTER key and (use or keys to) scroll to Advanced Set-up security code "22". [. . . ] of calibration points Flow Rate Response Time Temperature Resolution Relative Accuracy Sensor Temperature Response Temperature Compensation Pressure input Salinity input range Set-point and Controller Functions Controller characteristics Adjustable period with pulse length controller Adjustable period with pulse frequency controller Pickup / Dropout delay Switching D. O. hysteresis Contact outputs, controller Switching voltage Switching current Switching power Alarm Functions Function (selectable) Pickup delay Switching voltage Switching current Switching power Electrical Data and Connections Power Requirements Frequency Signal Output Load D. O. input Input impedance Cable length Connection terminal Mains fuse / fine wire fuse 32 Operating Manual EMC Specifications Emissions Susceptibility Environmental Conditions Ambient temp. operating range Relative humidity Mechanical Specifications Dimensions (control panel housing - L x H x W) Weights (control panel housing) Material Insulation (Front / Housing) alpha DO 1000 According to EN 50081-1 According to EN 50082-1 0 to 50 °C 10 to 95%, non-condensing 175 x 96 x 96 mm max. [. . . ]