EUTECH INSTRUMENTS ALPHA DO 1000 DISSOLVED OXYGEN CONTROLLERTRANSMITTER Manuál s instrukcemi stáhnout pdf (Strana 3)

Operating Instructions αlpha-CON1000

68X216802

7.4 Controller (Cntr) sub-function...............................................................19

7.5 Measurement Range sub-function .........................................................20

7.6 Current Output (rng) sub-function......................................................... 21

7.7 Configuration (ConF) sub-function .......................................................22

7.8 Calibration (CAL) sub-function ............................................................ 23

8 Auto/Manual Mode.......................................................................................... 24

8.1 Auto mode (mode after switch-on)........................................................24

8.2 Manual mode........................................................................................24

9 Technical Specifications............................................................................... 25

10 Accessories Assembly Accessories....................................................................26

11 General Information.........................................................................................26

11.1 Warranty ..............................................................................................26

11.2 Packaging.............................................................................................26

11.3 Return of Goods ...................................................................................26

11.4 Guidelines for Returning Unit for Repair............................................... 26

12 Appendices............................................................................................... 27

12.1 Appendix 1 – Jumper Positions.............................................................27

12.2 Appendix 2 – Measurement Ranges available in the Controller.............. 28

12.3 Appendix 3 – Conductivity at Related Temperature Coefficients (25

C) 28

12.4 Appendix 4 – Conductivity of Various Aqueous Solutions at 25

C ........30

12.5 Appendix 5 - Simple Explanation on the Function of Hysteresis ............31

12.6 Appendix 6 – General Instructions Concerning Controller Setting ......... 32

1 Introduction

1.1 Description of Unit

Thank you for purchasing Eutech’s ¼ DIN alpha-1000 series Conductivity process controllers. This

unit is used for measuring the Conductivity of a solution, either in micro-Siemens or milli-Siemens,

one at a time, and the operational mode is switchable from the menu. You can use this unit to

measure Conductivity with limit control. This controller has many user-friendly and safety features

which include:

• Menu-driven program that simplifies set-up

• Ten ranges of Conductivity measurements-software selectable (Appendix 2).

• Built-in memory backup to ensure that calibration data and other information are not erased

if power supply fails

• Automatic temperature compensation (ATC) with Pt100 or Pt 1000

• Manual temperature compensation with independent setting for calibration and process

temperature

• Temperature coefficient variable between 0.00 to 10.00 % per

C. Separate pure water

compensation curve stored in memory. Reference temperature at 25

• 0 to 1999 second time delay adjustment on all relays – minimise false alarms

• Separately adjustable high and low set point hysteresis (dead bands) prevent chattering of

relays around the set points

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EUTECH INSTRUMENTS ALPHA DO 1000 DISSOLVED OXYGEN CONTROLLERTRANSMITTER Manuál s instrukcemi Strana 3

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