Related Manuals for EUTECH INSTRUMENTS ALPHA DO 1000 DISSOLVED OXYGEN CONTROLLERTRANSMITTER
Summary of Contents for EUTECH INSTRUMENTS ALPHA DO 1000 DISSOLVED OXYGEN CONTROLLERTRANSMITTER
- Page 1 Instruction Manual αlpha-DO 1000 Dissolved Oxygen Controller/Transmitter Technology Made Easy ... 68X242101 Rev 3, 06/04...
- Page 2 The information presented in this manual is subject to change without notice as improvements are made, and does not represent a commitment on part of Eutech Instruments Pte Ltd. Eutech Instruments cannot accept any responsibility for damage or malfunction of the unit due to improper use of the instrument. Copyright ©1998 All rights reserved.
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Page 3: Safety Information
Operating Manual alpha DO 1000 Safety Information The Eutech 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 4: Table Of Contents
Operating Manual alpha DO 1000 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 4.1.1 Keypad ........................6 4.1.2... - Page 5 Operating Manual alpha DO 1000 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 ..................25 7.7.1 Entering Current Output sub-function ..............25...
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Page 6: Introduction
INTRODUCTION Description of Unit Thank you for purchasing Eutech’s ¼ DIN alpha-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. You can use this unit to measure Dissolved Oxygen with limit or proportional control. -
Page 7: Assembly And Installation
Operating Manual alpha DO 1000 ASSEMBLY AND INSTALLATION Measurement and Control System A typical measurement system consists of: • an αlpha-DO1000 process controller • a Dissolved Oxygen probe with integrated temperature sensor Pt100 • an immersion, flow or process assembly •... -
Page 8: Electrical Connection
Operating Manual alpha DO 1000 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 9: Back Panel
Operating Manual alpha DO 1000 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. - Page 10 Operating Manual alpha DO 1000 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.
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Page 11: Overview
Operating Manual alpha DO 1000 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 •... -
Page 12: Function Groups
Operating Manual alpha DO 1000 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 13: Control Concept
Operating Manual alpha DO 1000 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... -
Page 14: Measurement
Operating Manual alpha DO 1000 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 15: Security Codes
Operating Manual alpha DO 1000 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 16: Clearing The Advanced Setup Security Code From The Display
Operating Manual alpha DO 1000 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 17: Calibration Mode
Operating Manual alpha DO 1000 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. -
Page 18: Dissolved Oxygen Calibration In % Saturation Of Oxygen
Operating Manual alpha DO 1000 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. - Page 19 Operating Manual alpha DO 1000 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”...
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Page 20: Advanced Set-Up Mode
Operating Manual alpha DO 1000 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;... -
Page 21: Setting The Salinity Value
Operating Manual alpha DO 1000 pressed to adjust the Dissolved Oxygen value, you will see that the ‘offset’ value in its upper display also changes. Press the ENTER key to accept the offset value. Note: The offset value is reset during full calibration (See section 6). 10. -
Page 22: Setting Temperature (Set °C) Sub-Function
Operating Manual alpha DO 1000 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 23: Setting Manual Temperature Compensation
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. -
Page 24: Entering The Set Point 1 (Or Set Point 2) Sub-Function
Operating Manual alpha DO 1000 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 25: Selecting A Hysteresis (Dead Band) Value
Operating Manual alpha DO 1000 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%). -
Page 26: Setting An Off-Delay Time Lag
Operating Manual alpha DO 1000 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. -
Page 27: Controller (Cntr) Sub-Function
Operating Manual alpha DO 1000 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 ▲... -
Page 28: Choosing Break/Make Contact Relay Type
Operating Manual alpha DO 1000 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 ▲... -
Page 29: Maximum Pulse Length (Tpl) Or Maximum Frequency (Fpf)
Operating Manual alpha DO 1000 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 30: Current Output (Rng) Sub-Function
Operating Manual alpha DO 1000 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 31: Selecting Dissolved Oxygen Value At 20Ma
Operating Manual alpha DO 1000 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 32: Selecting The Units Of Measure (Mg/L, Ppm Or %)
Operating Manual alpha DO 1000 7.8.2 Selecting the Units Of Measure (mg/l, ppm or %) HOLD SETUP The reading displayed on the LCD in the controller can be mg/l 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 33: Selecting Dissolved Oxygen Probe Type
Operating Manual alpha DO 1000 FLEt = fleeting (single pulse) contact 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 ▼... -
Page 34: Calibration (Cal) Sub-Function
Operating Manual alpha DO 1000 Press the ENTER key to confirm your selection and to return to Advanced Set-up mode, or return to Measurement mode by pressing the ▲ and ▼ keys simultaneously (escape). Calibration (CAL) sub-function The calibration procedure in Advanced Set-up mode is identical to the procedure in the Calibration mode. -
Page 35: Auto/Manual Mode
Operating Manual alpha DO 1000 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 36 Operating Manual alpha DO 1000 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.
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Page 37: Technical Specifications
Operating Manual alpha DO 1000 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 38: Accessories
Operating Manual alpha DO 1000 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 39: General Information
11.1 Warranty Eutech 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 40: Appendices
Operating Manual alpha DO 1000 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 41: Appendix 2 - Salinity Vs Temperature (@ 760 Mmhg)
Operating Manual alpha DO 1000 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 42: Appendix 3 - Explanation On The Function Of Hysteresis
Operating Manual alpha DO 1000 12.3 Appendix 3 - Explanation on the Function of Hysteresis SP1 Set to LO SP2 Set to HI RELAY ON RELAY OFF 10.0 10.5 100.0 100.5 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 43: Appendix 4 - Limit And Proportional Control Functions
Operating Manual alpha DO 1000 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 %... - Page 44 For more information on Eutech Instruments products, contact your nearest Eutech Instruments distributor or visit our website listed below: DISTRIBUTED BY: Manufactured by: Eutech Instruments Pte Ltd. Blk 55 Ayer Rajah Crescent #04-16/24 Singapore 139949 Tel: (65) 6778 6876 Fax: (65) 6773 0836 E-mail: marketing@eutechinst.com...