Thermo Scientific ALPHA DO 1000 Manual
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Thermo Scientific ALPHA DO 1000 Manual

Thermo Scientific ALPHA DO 1000 Manual

Controller/transmitter mg/l / % saturation / °c
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Alpha DO 1000
Controller/Transmitter
mg/l / % saturation / °C

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  • Page 1 Alpha DO 1000 Controller/Transmitter mg/l / % saturation / °C...
  • Page 2 ROSS and the COIL trade dress are trademarks of Thermo Fisher Scientific Inc. U.S. patent 6,793,787. AQUAfast, Cahn, ionplus, KNIpHE, No Cal, ORION, perpHect, PerpHecT, PerpHecTion, pHISA, pHuture, Pure Water, Sage, Sensing the Future, SensorLink, ROSS, ROSS Ultra, Sure-Flow, Titrator PLUS and TURBO2 are registered trademarks of Thermo Fisher.
  • Page 3 Preface This manual serves to explain the use of the Alpha DO 1000 series Dissolved Oxygen controller/transmitter. The manual functions in two ways: firstly as a step- by-step guide to help the user operate the instrument. Secondly, it serves as a handy reference guide.

  • Page 5: Safety Information

    Safety Information The Alpha Controller/ Transmitter shall be installed and operated only in the manner specified in the Instruction manual. Only skilled, trained or authorized person should carry out installation, setup and operation of the instrument. Before powering up the unit, make sure that power source it is connected to, is as specified in the top label.

  • Page 6: Table Of Contents

    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 ....................
  • Page 7 7.6.1 Entering the Controller sub-function ............22 7.6.2 Choosing the controller type (limit or proportional)........22 7.6.3 Choosing Break/Make Contact Relay Type ..........23 7.6.4 Selecting Proportional Range Value, Xp ..........23 7.6.5 Maximum Pulse Length (tPL) or Maximum Frequency (FPF) ....24 Current Output (rng) sub-function ..............

  • Page 9: Introduction

    INTRODUCTION Description of Unit Thank you for purchasing the Thermo Scientific’s ¼ DIN Alpha DO 1000 series Dissolved Oxygen process controller. This unit is used for measuring either in % saturation, mg/l or ppm, one at a time, and the operational mode is switchable from the menu.

  • Page 10: Assembly And Installation

    ASSEMBLY AND INSTALLATION Measurement and Control System A typical measurement system consists of: • an Alpha DO 1000 process controller • a Dissolved Oxygen probe with integrated temperature sensor Pt100 • an immersion, flow or process assembly • a final control element such as pump or valve, and •...

  • Page 11: Electrical Connection

    ELECTRICAL CONNECTION ENSURE that the power cable is physically separated from the power supply. Connection Diagram 18 19 20 PE/S Signal Input DO Pt100 Relay 2 Relay 1 Hold Input Signal Output Power Mains Alarm PE/S * ) indicated contact positions are for currentless or no error conditions...

  • Page 12: Back Panel

    Back Panel The back panel consists of two connectors. The first connector is the 17-way PCB edge connector and the other is the 5-way connector. ENSURE that the power cable is physically separated from the power supply. Connection for the 17-way screw terminals (from left to right): Pin No Description Pin No...
  • Page 13 DO Probe Pt100 FUSE 250VAC 100mA (F) RELAY1 RELAY2 ALARM HOLD IMPORTANT: The Alarm relay functions as an “Active Low” device i.e. it switches OFF under Alarm condition. Therefore the Alarm display device should be connected to the ‘NC’ contacts of the relay.

  • Page 14: Overview

    OVERVIEW Keypad and Display 4.1.1 Keypad • Perform rapid calibration • Allows entry to Set up mode • Select individual functions within the function group of Set up mode • Store input data in the Set up mode • Start calibration in the calibration mode •...

  • Page 15: Function Groups

    Function Groups The main function and sub-function groups are organised in a matrix format for configuration and selection of parameters. The main function groups are: Offset adjustment (OFS). See Section 7.1. Temperature Measurement / compensation settings (SEt °C). See Section 7.4. Control relay 1 configuration (SP1).

  • Page 16: Control Concept

    Control Concept The main function and sub-function groups are organised in a matrix format as shown below. These functions can be accessed via the front keypad for configuration and selection of parameters. MEASURE CODE OFFSET Set Offset Set Salinity Set Pressure Process temp.

  • Page 17: Measurement

    MEASUREMENT Display in Measurement mode When the controller is initially powered on, it automatically enters into the Measurement mode after the large dual LCD displays all segments briefly. The upper display shows the measured Dissolved Oxygen value, while the lower display shows the temperature value.

  • Page 18: Security Codes

    Security Codes This controller has two levels of security protection with separate security codes. The first level allows entry into the Calibration mode: security code = 11; the second allows entry into the SETUP mode: security code = 22. The security codes protect the controller from unauthorised tampering of its current setting.

  • Page 19: Clearing The Advanced Setup Security Code From The Display

    NOTE: If you want to view (not change) set up parameters, push the ENTER key when the security code reads “000”. 5.2.4 Clearing the Advanced Setup Security Code from the Display After you have entered the security code and returned to the Measurement mode, the security code “22”...

  • Page 20: Calibration Mode

    CALIBRATION MODE You can reach the Calibration mode directly from the HOLD SETUP Measurement mode by pressing the CAL key and entering the Calibration security code. You can also reach the Calibration mode from the Advanced Setup mode. Dissolved Oxygen Calibration If the units of measure is in mg/l (default), then the HOLD SETUP...

  • Page 21: Dissolved Oxygen Calibration In % Saturation Of Oxygen

    If the calibration is successful, the controller switches to the second point, which is the high-level of dissolved oxygen. Take the probe out of the solution and immerse it in a solution with a higher concentration of dissolved oxygen. When the reading is stable, “READY” annunciator comes on.
  • Page 22 annunciator comes on. Press ENTER key to accept the value and the controller displays the status of the probe. For Two-Point Calibration, calibration is carried out at 0% saturation first. Immerse the probe in solution and allow it to stabilise. When the reading is stable, the “READY”...

  • Page 23: Advanced Set-Up Mode

    ADVANCED SET-UP MODE Electrode Offest (OFS), Salinity and Pressure sub-function This mode allows you to change the offset parameter to make reading corrections without removing the electrode from the control system. You can make adjustments of up to ±2.00ppm; ±2.00 mg/l; or ±10.0%. At the end of the offset adjustment, the salinity value, followed by the pressure values (in mmHg or Pascal) respectively, is entered.

  • Page 24: Setting The Salinity Value

    Press the ▲ or ▼ keys until the Dissolved Oxygen value coincides with the correct Dissolved Oxygen value noted in Step 2. As the ▲ or ▼ keys is pressed to adjust the Dissolved Oxygen value, you will see that the ‘offset’ value in its upper display also changes.

  • Page 25: Setting Temperature (Set °C) Sub-Function

    Press the ENTER key to accept the correct pressure values. The controller automatically compensates the final Dissolved Oxygen measurement. Proceed with additional Advanced Set-up procedures (press ENTER again) or return to Measurement mode by pressing the ▲ or ▼ keys (escape) simultaneously.

  • Page 26: Setting Manual Temperature Compensation

    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.

  • Page 27: Entering The Set Point 1 (Or Set Point 2) Sub-Function

    7.5.1 Entering the Set point 1 (or Set point 2) sub-function Enter Advanced Set-up mode. Push the ENTER key HOLD SETUP and (use ▲ or ▼ keys to) scroll to Advanced Set-up security code “22”. Push the ENTER key again. Press the ▲...

  • Page 28: Selecting A Hysteresis (Dead Band) Value

    7.5.4 Selecting a Hysteresis (Dead Band) Value Hysteresis prevents rapid contact switching if the value is fluctuating near the set point. It does this by overshooting the set point value to a specified hysteresis value (default is 0.20 mg/l or 2.5%). You can set the hysteresis value from 0.1 to 10 mg/l, 0.1 to 10 ppm or 1 to 10%.

  • Page 29: Setting An Off-Delay Time Lag

    Proceed to 7.3.6, or return to Measurement mode by pressing the ▲ and ▼ keys simultaneously (escape). 7.5.6 Setting an Off-Delay Time Lag You can set as time delay for each relay, which stops the relay from switching off the moment the value reached the set point and hysteresis. This controller lets you set a 0 to 1999 seconds time delay before your relay deactivates.

  • Page 30: Controller (Cntr) Sub-Function

    Controller (Cntr) Sub-Function You can set the controller’s parameters in this sub-function. 7.6.1 Entering the Controller sub-function Enter Advanced Set-up mode. Push the ENTER key and scroll to Advanced set-up security code “22”. Push the ENTER key again. Press the ▲ or ▼ keys to scroll until the upper display shows “Cntr”. HOLD SETUP HOLD...

  • Page 31: Choosing Break/Make Contact Relay Type

    Press the ▲ or ▼ keys to select your controller type. L.Ct = limit value pickup (on/off control). oFF = controller off. PLC= pulse length control PFC= pulse frequency control Press the ENTER key to confirm your selection. Proceed to 7.6.3, or return to Measurement mode by pressing the ▲ and ▼...

  • Page 32: Maximum Pulse Length (Tpl) Or Maximum Frequency (Fpf)

    Press the ENTER key to confirm your selection. Proceed to 7.6.5, or return to Measurement mode by pressing the ▲ and ▼ keys simultaneously (escape). 7.6.5 Maximum Pulse Length (tPL) or Maximum Frequency (FPF) Note: If the controller type “oFF” is set, the parameters listed in 7.6.3, 7.6.4, and 7.6.5 are blanked out.

  • Page 33: Current Output (Rng) Sub-Function

    Current Output (rng) sub-function This sub-function lets you set the transmitter current output range of this unit. The difference between the upper and lower range has to be a minimum of 20% in the “%” mode or 2mg/l in the “mg/l” mode, anywhere on the scale. (Hence, if 4mA = 4mg/l or 20%, then the closest range for the the 20mA = 6mg/l or 40%).

  • Page 34: Selecting Dissolved Oxygen Value At 20Ma

    7.7.4 Selecting Dissolved Oxygen value at 20mA This parameter lets you choose the Dissolved Oxygen value at which the transmitter output will be 20mA. Follow directions in 7.7.1 to enter Current Output mode. Press the ENTER key until the upper display shows a Dissolved Oxygen value and the lower display shows “r.20”.

  • Page 35: Selecting The Units Of Measure (Mg/L, Ppm Or %)

    7.8.2 Selecting the Units Of Measure (mg/l, ppm or %) HOLD SETUP mg/l The reading displayed on the LCD in the controller can be displayed in mg/l, ppm or in terms of % saturation. Follow directions in 7.8.1 to enter Configuration mode. Press the ENTER key.

  • Page 36: Selecting Dissolved Oxygen Probe Type

    Press the ▲ or ▼ keys to select steady or pulse contact. Press the ENTER key to confirm your selection. Proceed to 7.8.5, or return to Measurement mode by pressing the ▲ and ▼ keys simultaneously (escape). 7.8.5 Selecting Dissolved Oxygen Probe Type Note: After each changeover, the factory calibration data for zero point and slope are overwritten.

  • Page 37: Calibration (Cal) Sub-Function

    Calibration (CAL) sub-function The calibration procedure in Advanced Set-up mode is identical to the procedure in the Calibration mode. The only difference is that the controller will revert back to Set-up mode (instead of Measurement mode) after calibration is completed. 7.9.1 Entering Calibration mode from Advanced Set-up mode Enter Advanced Set-up mode.

  • Page 38: Auto/Manual Mode

    AUTO/MANUAL MODE Regardless of the mode, you can control devices connected to Relay A or Relay B from the front panel of this controller. In Automatic mode, the controller’s set point values activate the relays. In Manual mode, you have manual control of the relays so you can prime the pump or check pump status without operating the entire system.
  • Page 39 Note: If you wish to manually change the status of both relays, press the RELAY SELECTION key at this point and repeat step 5 for the second relay. This first relay will remain under manual control while you are setting the second relay. Press the RELAY CONTROL key to return to Measurement mode.

  • Page 40: Technical Specifications

    TECHNICAL SPECIFICATIONS Dissolved Oxygen Range mg/l of Oxygen 0.00– 20.00mg/l % Saturation of Oxygen 0.0 to 200.0% Saturation Resolution mg/l of Oxygen 0.01mg/l % Saturation of Oxygen 0.1% Relative Accuracy mg/l of Oxygen ± 1.5% of full scale reading % Saturation of Oxygen ±...

  • Page 41: Accessories

    EMC Specifications Emissions According to EN 50081-1 Susceptibility According to EN 50082-1 Environmental Conditions Ambient temp. operating range 0 to 50 °C Relative humidity 10 to 95%, non-condensing Mechanical Specifications Dimensions 175 x 96 x 96 mm (control panel housing - L x H x W) Weights (control panel housing) max.

  • Page 42: General Information

    11 GENERAL INFORMATION 11.1 Warranty Thermo Scientific Instruments warrants this product to be free from significant deviations in material and workmanship for a period of one year from the date of purchase. If repair is necessary and has not been the result of abuse or misuse within the warranty period, please return by freight pre-paid and amendment will be made without any charge.

  • Page 43: Appendices

    12 APPENDICES ENSURE that the power cable is physically separated from the power supply 12.1 Appendix 1 – Jumper Positions for 110 or 230 volts Jumper Positions - Internal to the controller JP 1 Selects the input voltage 220 VAC. JP 2 Selects the input voltage 110 VAC.

  • Page 44: Appendix 2 - Salinity Vs Temperature (@ 760 Mmhg)

    12.2 Appendix 2 – Salinity vs Temperature (@ 760 mmHg) The following table shows the Dissolved Oxygen values at different salinity values, at different temperatures, at barometric pressure of 760 mmHg. For other pressure levels, the controller automatically corrects the value based on the pressure value input.

  • Page 45: Appendix 3 - Explanation On The Function Of Hysteresis

    12.3 Appendix 3 - Explanation on the Function of Hysteresis SP1 Set to LO SP2 Set to HI RELAY ON RELAY OFF 10.0 100.0 100.5 10.5 FORWARD DIRECTION HYSTERESIS BAND REVERSE DIRECTION The controller relay activates when the set-point is reached. In the reverse direction, it does not de-activate when the value reaches the set-point.

  • Page 46: Appendix 4 - Limit And Proportional Control Functions

    12.4 Appendix 4 – Limit and Proportional Control Functions MIN Function MAX Function 100 % 50 % + Xw - Xw Prop. Band Prop. Band SP 1 SP 2 Control characteristic of P-Controllers as proportional controller MIN Function MAX Function 100 % 50 % + Xw...
  • Page 48 Water Analysis Instruments North America 166 Cummings Center Beverly, MA 01915 USA Toll Free: 1-800-225-1480 Tel: 1-978-232-6000 Dom. Fax: 1-978-232-6015 Int’l Fax: 978-232-6031 Europe P.O. Box 254, 3860 AG Nijkerk Wallerstraat 125K, 3862 CN Nijkerk, Netherlands Tel: (31) 033-2463887 Fax: (31) 033-2460832 Asia Pacific Blk 55, Ayer Rajah Crescent #04-16/24, Singapore 139949...

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Alpha do 1000 dissolved oxygen controller transmitter

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