EUTECH INSTRUMENTS alpha-pH1000 Operating Instructions Manual
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EUTECH INSTRUMENTS alpha-pH1000 Operating Instructions Manual

Ph and orp controller/transmitter
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EUTECH INSTRUMENTS
alpha-pH1000
pH and ORP Controller/Transmitter

Operating Instructions

68X216801 rev1
Technology Made Easy ...
08/01

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Summary of Contents for EUTECH INSTRUMENTS alpha-pH1000

  • Page 1: Operating Instructions

    EUTECH INSTRUMENTS alpha-pH1000 pH and ORP Controller/Transmitter Operating Instructions 68X216801 rev1 Technology Made Easy ... 08/01...
  • 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.

  • Page 3: Safety Information

    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

    TABLE OF CONTENTS INTRODUCTION Description of Unit Applications ASSEMBLY AND INSTALLATION Measurement and Control System Unit Dimensions ELECTRICAL CONNECTION Connection Diagram Back Panel OVERVIEW Keypad and Display Function Groups Control Concept MEASUREMENT Display in Measurement mode Security Codes CALIBRATION MODE pH Calibration ORP –...

  • Page 5: Introduction

    alpha-pH 1000 INTRODUCTION Description of Unit Thank you for purchasing Eutech’s ¼ DIN alpha-1000 series pH/ORP process controllers. This unit is used for measuring either pH or ORP parameter one at a time, and the operational mode is switchable from the menu. You can use this unit to measure pH or ORP with proportional or limit control.

  • Page 6: Assembly And Installation

    alpha-pH 1000 ASSEMBLY AND INSTALLATION Measurement and Control System A typical measurement system consists of: • a pH/ORP process controller • a pH/ORP combination electrode with integrated or separate temperature sensor Pt 100/1000, • an immersion, flow or process assembly with or without a potential matching pin (PMP) •...

  • Page 7: Electrical Connection

    alpha-pH 1000 ELECTRICAL CONNECTION Connection Diagram B N C 1 9 2 0 2 1 22 P E /S P o te ntial M atch in g P in (P M P ) P t 1 00 S ign a l Inp u t p H /O R P R ela y A H old Inp u t S ig na l O u tp u t...
  • Page 8 alpha-pH 1000 Te m p . P E N 0 / PA B N C Symmetrical high-impedance connections M easuring C able P otential pH C om bin ation M atch ing P in (P M ) E lectrode Asymmetrical connections...

  • Page 9: Back Panel

    alpha-pH 1000 Back Panel Caution: Ensure electrical mains is disconnected before proceeding. 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. Connection for the 17-way screw terminals (from left to right): 1.

  • Page 10: Overview

    alpha-pH 1000 OVERVIEW Keypad and Display 4.1.1 Keypad • Perform rapid 2-point calibration C A L • 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 11: Function Groups

    alpha-pH 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) Temperature Measurement / compensation settings (Set Control relay 1 configuration (SP1) Control relay 2 configuration (SP2) Control type (Cntr) Current output (rng)

  • Page 12: Control Concept

    alpha-pH 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. M E A S U R E C O D E S et O ffse t O F F S E T...

  • Page 13: Measurement

    alpha-pH 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 pH or ORP value, while the lower display shows either the temperature value if the controller is set for pH measurement or “OrP”...
  • Page 14 alpha-pH 1000 5.2.1 How to enter and change parameters in Calibration mode 1) Press the CAL key. The upper display shows “000” and the SETUP lower display shows “C.Cd” to prompt the user to enter the Calibration security code. HOLD C.Cd 2) Press the ! or "...

  • Page 15: Calibration Mode

    alpha-pH 1000 CALIBRATION MODE You can reach the Calibration mode directly from the 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. pH Calibration This unit features 7 preset buffer values (1.01, 4.01, 6.86, 7.00, 9.00, 9.18 and 10.01) for fast auto calibration.

  • Page 16: Orp - Mv Calibration

    alpha-pH 1000 Note: If there is a calibration error, the controller displays “ERR”. If this happens, push both the ! and " keys (escape) to restart the calibration beginning from step 1. Note: When calibrating with manual temperature compensation, the controller automatically changes from the preset process temperature to the calibration temperature.

  • Page 17: Orp -% Calibration

    alpha-pH 1000 ORP -% Calibration The ORP % mode allows you to calibrate at two points: a low concentration sample (20%) and a high concentration sample (80%). To calibrate the controller for ORP %: 1) Enter Calibration mode. While in Measurement mode, push the CAL key and scroll to Calibration Code SETUP “11”.

  • Page 18: Advanced Set-Up Mode

    alpha-pH 1000 ADVANCED SET-UP MODE Electrode Offset (OFS) sub-function You can perform electrode offset only in the pH mode. 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 +/- 120 mV.
  • Page 19 alpha-pH 1000 7.2.2 Temperature calibration (ATC mode only) Select “ATC on” as described above in Section 7.2.1. SETUP Press the ENTER key. The upper display indicates the current temperature offset. The current measured temperature is HOLD shown in the lower display. Compare the current measured temperature on the controller display to a thermometer known to be accurate.

  • Page 20: Control Relay A/Control Relay B (Sp1/Sp2) Sub-Function

    alpha-pH 1000 Control Relay A/Control Relay B (SP1/SP2) sub-function The SP1 option sets the operating parameters for Relay A; the SP2 option sets the operating parameters for relay B. Since these groups have the same set-up parameters, they are described together.
  • Page 21 alpha-pH 1000 Follow directions in 7.3.1 to enter Control Relay mode. SETUP Press the ENTER key. Scroll with the ! or " key until the 0.50 HOLD upper display shows the hysteresis (dead band) value and the lower display shows “HYS”. Press the ! or "...

  • Page 22: Controller (Cntr) Sub-Function

    alpha-pH 1000 Controller (Cntr) sub-function You can set the controller’s parameters in this sub-function. 7.4.1 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 "...
  • Page 23 alpha-pH 1000 1) Follow directions in 7.4.1 to enter Controller mode. SETUP dEEn 2) Press the ENTER key. Scroll until the lower display shows “rEL” HOLD and the upper display shows the current selection (de-energised = dEEN or energised = EN). 3) Press the ! or "...

  • Page 24: Current Output (Rng) Sub-Function

    alpha-pH 1000 Current Output (rng) sub-function This sub-function lets you set the controller current output range of this unit. SETUP HOLD 7.5.1 Entering current output 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.

  • Page 25: Configuration (Conf) Sub-Function

    alpha-pH 1000 Press the ENTER key to confirm your selection. Press the ENTER key to return to Advanced Set-up mode, or return to Measurement mode by pressing the ! and " keys simultaneously (escape). Configuration (ConF) sub-function This group of parameters lets you configure the controller to suit your requirements. 7.6.1 Entering the Configuration sub-function Enter Advanced Set-up mode.
  • Page 26 alpha-pH 1000 S E T U P Follow direction in 7.6.1 to enter Configuration mode. A lr H O L D Press the ENTER key until upper display shows “Alr” or “CLn”. Press the ! or " key to choose the desired function. Press the ENTER key to confirm your selection.
  • Page 27 alpha-pH 1000 7.6.6 Configuring the Wash contact if relay 3 has been set to the Wash mode S E T U P Follow directions in 7.6.1 to enter Configuration mode. C Ln Press the ENTER key until the upper display shows “Alr” or “CLn”. H O LD Press the ! or "...

  • Page 28: Calibration (Cal) Sub-Function

    alpha-pH 1000 S E T U P Follow directions in 7.6.1 to enter Configuration mode. H O L D Press the ENTER key until the upper display shows “no”, “FCt” or dE F “CAL”, and the lower display shows “deF” (default). Press the ! or "...

  • Page 29: Auto/Manual Mode

    alpha-pH 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 30: Technical Specifications

    alpha-pH 1000 TECHNICAL SPECIFICATIONS pH Range 0.00 to 14.00 pH Resolution 0.01 pH Relative Accuracy +/- 0.01 pH mV Range 0 to 100.0 % / - 1000 to +1000 mV Resolution 0.1 % / 1 mV Relative Accuracy +/- 1 mV Temperature - 9.9 to + 125.0 Resolution...
  • Page 31 alpha-pH 1000 Mechanical Specifications Dimensions (control panel housing - L x H x W) 175 x 96 x 96 mm Weights (control panel housing) max. 0.7 kg Material ABS with polycarbonate (front housing) Insulation (Front / Housing) IP 54 / IP 65...

  • Page 32: 10 Accessories

    alpha-pH 1000 10 ACCESSORIES Replacement Unit Product Description Code no. αlpha-pH1000 pH/ORP Controller/Transmitter with 0/4-20 mA output and EC-PHCTP1001 110VAC Setting αlpha-pH1000 pH/ORP Controller/Transmitter with 0/4-20 mA output and EC-PHCTP1002 220VAC Setting Assembly Accessories Product Description Code no. pH Combination Electrode with Pt 100 RTD and PMP EC-100GTSO-05B pH Combination Electrode with HF resistant glass (w/o ATC &...

  • Page 33: 11 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 34: 12 Appendices

    alpha-pH 1000 12 APPENDICES 12.1 Appendix 1 Before opening the unit, ENSURE that the power cable is physically separated from the power supply. Jumper Positions - Internal to the controller JP 1 Selects the input voltage 220 VAC. JP 2 Selects the input voltage 110 VAC.

  • Page 35: Appendix

    alpha-pH 1000 12.2 Appendix 2 The following table shows the various pH values at different temperature of the solution during calibration. Temperature ( pH 1.00 pH 4.01 pH 6.86 pH 7.00 pH 9.00 pH 9.18 pH 10.01 0.96 4.01 6.98 7.12 9.33 9.47...

  • Page 36: Appendix 3

    alpha-pH 1000 12.3 Appendix 3 Simple Explanation on the Function of Hysteresis SP1 Set to LO SP2 Set to HI RELAY ON RELAY OFF 10.0 FORWARD DIRECTION HYSTERESIS BAND REVERSE DIRECTION (DEFAULT = 0.5 pH) 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 37: Appendix 4

    alpha-pH 1000 12.4 Appendix 4 General Instructions Concerning Controller Setting MIN Function MAX Function 100 % 50 % + Xw - Xw Prop. Band Prop. Band SP 1 SP 2 Control characteristic of P-Controller as proportional controller MIN Function MAX Function 100 % 50 % + Xw...
  • Page 38 alpha-pH 1000 The output relay of the pulse length controller is clock-timed. The switching period T remains constant. Depending on the divergence from the limit value, the switch-on time t is increased or decreased in accordance with the proportional range Xp. The following applies: = T (Const.) greater divergence ! greater t ON...
  • Page 39 For more information on Eutech Instruments products, contact your nearest Eutech Instruments distributor or visit our website listed below: Manufactured by: Distributed by: Eutech Instruments Pte Ltd. Blk 55, Ayer Rajah Crescent, #04-14/24 Singapore 139949 Tel: (65) 778 6876 Fax: (65) 773 0863 E-mail: marketing@eutechinst.com...

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