eutech-instruments alpha do 1000 dissolved oxygen controllertransmitter User Manuals

Table of Contents

• INTRODUCTION

  1
• Description of Unit

  1
• Applications

  1
• ASSEMBLY AND INSTALLATION

  2
• Measurement and Control System

  2
• Unit Dimensions

  2
• ELECTRICAL CONNECTION

  3
• Connection Diagram

  3
• Back Panel

  4
• OVERVIEW

  6
• Keypad and Display

  6
• Keypad

  6
• Display

  6
• Function Groups

  7
• How to view operating parameters without access to change them:

  7
• Control Concept

  8
• MEASUREMENT

  9
• Display in Measurement mode

  9
• Check electrode performance

  9
• Checking set points

  9
• Security Codes

  10
• How to enter and change parameters in Calibration mode

  10
• Clearing the Calibration security code from the display

  10
• How to enter and change parameters in Advanced Setup mode

  10
• Clearing the Advanced Setup Security Code from the Display

  11
• CALIBRATION MODE

  12
• Dissolved Oxygen Calibration

  12
• Dissolved Oxygen Calibration in % Saturation of Oxygen

  13
• ADVANCED SET-UP MODE

  15
• Electrode Offest (OFS), Salinity and Pressure sub-function

  15
• Setting the Salinity Value

  16
• Setting the Pressure Value (mmHg or Pascal)

  16
• Setting Temperature (Set °C) sub-function

  17
• Selecting Automatic or Manual Temperature Compensation

  17
• Temperature calibration (ATC mode only)

  17
• Setting Manual Temperature Compensation

  18
• Control Relay A/Control Relay B (SP1/SP2) sub-function

  18
• Entering the Set point 1 (or Set point 2) sub-function

  19
• Selecting the Set Point Values

  19
• Choosing High or Low Set-points

  19
• Selecting a Hysteresis (Dead Band) Value

  20
• Setting an On-Delay Time Lag

  20
• Setting an Off-Delay Time Lag

  21
• Controller (Cntr) Sub-Function

  22
• Entering the Controller sub-function

  22
• Choosing the controller type (limit or proportional)

  22
• Choosing Break/Make Contact Relay Type

  23
• Selecting Proportional Range Value, Xp

  23
• Maximum Pulse Length (tPL) or Maximum Frequency (FPF)

  24
• Current Output (rng) sub-function

  25
• Entering Current Output sub-function

  25
• Choosing the Output Type

  25
• Selecting Dissolved Oxygen Value at 0(4)mA

  25
• Selecting Dissolved Oxygen value at 20mA

  26
• Configuration (ConF) sub-function

  26
• Entering the Configuration sub-function

  26
• Selecting the Units Of Measure (mg/l, ppm or %)

  27
• Selecting the Alarm Time Lag

  27
• Selecting Steady or Pulse Contact for the Alarm Relay

  27
• Selecting Dissolved Oxygen Probe Type

  28
• Reverting to Factory Default Settings

  28
• Calibration (CAL) sub-function

  29
• Entering Calibration mode from Advanced Set-up mode

  29
• AUTO/MANUAL MODE

  30
• Auto Mode (Mode After Switch-On)

  30
• Manual Mode

  30
• TECHNICAL SPECIFICATIONS

  32
• ACCESSORIES

  33
• Assembly Accessories

  33
• GENERAL INFORMATION

  34
• Warranty

  34
• Packaging

  34
• Return of Goods

  34
• Guidelines for Returning Unit for Repair

  34
• APPENDICES

  35
• Appendix 1 – Jumper Positions for 110 or 230 volts

  35
• Appendix 2 – Salinity vs Temperature (@ 760 mmHg)

  36
• Appendix 3 - Explanation on the Function of Hysteresis

  37
• Appendix 4 – Limit and Proportional Control Functions

  38