pH 500/mV 600 Series Panel-mounted, Microprocessor-based Process pH/mV Meters Instruction Manual Dear Customer, Thank you for choosing a Hanna Product. This instruction manual has been written for the following products: pH 500111 pH Controller with single setpoint, ON/OFF control, analog output pH 500112 pH Controller with single setpoint, ON/OFF control, RS232 output pH 500121 pH Controller with single setpoint, proportional and ON/OFF control, analog output pH 500122 pH Controller with single setpoint, proportional and ON/OFF control, RS232 output pH 500211 pH Controller with dual setpoint, ON/OFF control, analog output pH 500212 pH Controller with dual setpoint, ON/OFF control, RS232 output pH 500221 pH Controller with dual setpoint, proportional and ON/OFF control, analog output pH 500222 pH Controller with dual setpoint, proportional and ON/OFF control, RS232 output mV 600111 ORP Controller with single setpoint, ON/OFF control, analog output mV 600112 ORP Controller with single setpoint, ON/OFF control, RS232 output mV 600121 ORP Controller with single setpoint, proportional and ON/OFF control, analog output mV 600122 ORP Controller with single setpoint, proportional and ON/OFF control, RS232 output Please read this instruction manual carefully before using the instrument. It will provide you with the necessary information for the correct use of the instrument, as well as a precise idea of its versatility. These instruments are in compliance with directives. All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments Inc., 584 Park East Drive, Woonsocket, Rhode Island, 02895 , USA. 2 TABLE OF CONTENTS PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . 4 GENERAL DESCRIPTION. . . . . . . . . . . . . . . . . . . . . 4 FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . 6 MECHANICAL DIMENSIONS . . . . . . . . . . . . . . . . . 7 SPECIFICATIONS pH 500 & mV 600 . . . . . . . . . . . . 8 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 SETUP MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 CONTROL MODE . . . . . . . . . . . . . . . . . . . . . . . . 17 IDLE MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 ANALOG OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . 23 RS 232 COMMUNICATION AND DATA LOGGING 25 CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 LAST CALIBRATION DATA . . . . . . . . . . . . . . . . . . . 39 STARTUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 FAULT CONDITIONS AND SELFTEST PROCEDURES . 43 pH VALUES AT VARIOUS TEMPERATURES . . . . . . . . 47 ELECTRODE CONDITIONING AND MAINTENANCE . 48 TAKING REDOX MEASUREMENTS . . . . . . . . . . . . . 52 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 CE DECLARATION OF CONFORMITY . . . . . . . . . . . 62 3 PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipping. If there is any noticeable damage, notify your Dealer or the nearest Hanna Customer Service Center immediately. Note Save all packing materials until you are sure that the instrument functions correctly. Any damaged or defective items must be returned in their original packing materials together with the supplied accessories. GENERAL DESCRIPTION The product is a real time microprocessor-based pH/ORP controller. It provides accurate measurements, flexible ON/OFF or proportional control capabilities and dual alarm signals. The system is composed of a case inside which the signal conversion circuitry, the microprocessor circuitry and the output power drivers are contained. MAIN FEATURES OF DIFFERENT MODELS · Display: large LCD with 4 ½ 17 mm digits and 3 ½ 10 mm digits. · LEDs: three (mV 600) or four (pH 500) LEDs are provided for signaling the energizing of relay 1 (a yellow led), relay 2 (a yellow led in pH 500 Series only) and alarm relays (a green and a red LED). · Relays: 1 or 2 output relays for acid or base dosage (COM, NO and NC contacts) and 1 output relay for alarm condition (COM, NO and NC contacts). · RS232 isolated communication link (optional). · Calibration and Setup procedures allowed only through an unlock password. · Calibration: for pH 500 Series in 1, 2 or 3 points with buffers 4.01, 7.01 and 10.01 pH (25 °C); for mV 600 Series in 1 or 2 points at 0, 350 and 1900 mV. · Temperature compensation of the HANNA standard buffers (for pH 500 Series only). 4 · Temperature compensation of the pH reading (for pH 500 Series only). · Manual temperature setting when the temperature probe is not inserted or temperature exceeds the upper range. · Last calibration data internally recorded (non-volatile EEPROM memory): calibration date and time, pH offset, pH slopes, number of calibration points and correspondent pH values (for pH 500 Series only) or calibration date and time and the mV calibration points used (for mV 600 Series only). · Input: pH electrode with BNC connector. · Output: - isolated 0-1 mA, 10 K maximum load (optional); - isolated 0-20 mA, 750 maximum load (optional); - isolated 4-20 mA, 750 maximum load (optional); - isolated 0-5 VDC, 1 K minimum load (optional); - isolated 1-5 VDC, 1 K minimum load (optional); - isolated 0-10 VDC, 1 K minimum load (optional). · Real time clock. 5 FUNCTIONAL DESCRIPTION FRONT PANEL 1. Liquid Crystal Display 2. LCD key exits from setup and calibration modes and reverts back to normal mode (in idle or control phases with the measurement on the display). In pH 500 series, during pH calibration, alternately displays pH buffer value or current temperature 3. SETUP key enters setup mode 4. CAL DATA key last calibration data viewing (enters and exits) 5. CAL key initiates and exits calibration mode 6. key increases the blinking digit/letter by one when selecting a parameter. Advances forward while in last calibration data viewing mode. Increases the temperature setting when temperature probe is not inserted 7. key decreases the blinking digit/letter by one when selecting a parameter. Reverts backward while in last calibration data viewing mode. Decreases the temperature setting when temperature probe is not inserted 8. key moves to the next digit/letter (circular buffer) when selecting a parameter. Same as key during last calibration data viewing mode 9. CFM key confirms current choice (and skips to the next item) 10. LEDs 6 REAR PANEL 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. RS232 Connection Port (pH500XY2 and mV600XY2 models only) Analog Output (pH500XY1 and mV600XY1 models only) Power Supply Input Alarm Terminal Relay 2 - Second Dosing Terminal (pH5002XY models only) Relay 1 - First Dosing Terminal Connections for Pt 100 Temperature Sensor Connection for Electrode Reference Connection for Potential Matching Pin BNC Socket for pH or ORP Electrode ±5V Power Supply Output Unplug the meter before starting any electrical connections. MECHANICAL DIMENSIONS FRONT VIEW SIDE VIEW 7 SPECIFICATIONS pH 500 & mV 600 Range 0.00 to 14.00 pH ±2000 mV -9.9 to 120.0 °C 0.01 pH 1 mV 0.1 °C (pH 500 Series only) (mV 600 Series only) Resolution (pH 500 Series only) (mV 600 Series only) Accuracy (@20°C/68°F) ±0.02 pH (pH 500 Series only) ±2 mV (mV 600 Series only) ±0.5 °C ±0.2 pH (pH 500 Series only) ±10 mV (mV 600 Series only) ±0.5 °C II 230 ±10% VAC or 115 ±10% VAC, 50/60 Hz 15 VA Typical EMC Deviation Installation Category Power Supply Power Consumption Over Current Protection 400 mA 250V FAST FUSE Max.Oscillation Frequency 4 MHz Relays 1 and 2 SPDT contact outputs, 5A - 250 VAC, 5A - 30 VDC (resistive load) Fuse protected: 5A, 250V FUSE Alarm Relay SPDT contact output, 5A - 250 VAC, 5A - 30 VDC (resistive load) Fuse protected: 5A, 250V FUSE Environment Enclosure Weight 0-50 °C; max 85% R.H. non-condensing single case ½ DIN approximately 1.6 kg. (3.5 lb.) 8 INSTALLATION pH 500 and mV 600 offer a multitude of possibilities, from single and dual setpoints to ON/OFF or proportional dosage, isolated outputs with user-selectable zoom, bi-directional RS232, recorder outputs in mAmps and volts. In addition, pH 500 and mV 600 are both equipped with the exclusive differential input. In a system with poor grounding, it is possible to have a ground current flowing through the reference junction. This can cause a rapid degradation of the electrode. The Hanna differential input reduces the likelihood of ground loops. See the diagram for a recommended installation. 9 · Power Supply: Connect a 3-wire power cable to the terminal strip, while paying attention to the correct line (L), earth (PE) and neutral (N) terminal connections. Power: 115VAC - 100 mA / 230VAC - 50 mA Line Contact: fused inside 400 mA. PE must be connected to ground; leakage current 1mA. · Electrode: Connect the pH or ORP electrode to the BNC socket (#10 at page 7). To benefit from the differential input, connect the proper electrode wire (if available) or a cable with a potential matching pin (grounding bar) to the relevant terminal (#9 at page 7). Note When it is not possible to immerse the Potential Matching Pin together with the pH electrode in the solution, disable the differential input by connecting the Connection for Potential Matching Pin (#9 at page 7) with the Connection for Electrode Reference (#8 at page 7) with a jumper wire. · Pt 100 Terminals: these contacts (#7 at page 7) connect the Pt 100 temperature sensor for automatic temperature compensation of pH measurement. In the case of shielded wire, connect the shield to pin 4. In the case of a 2-wire sensor connect the Pt 100 to pins 1 and 3, and short pins 2 and 3 with a jumper wire. If the Pt 100 has more than 2 wires, connect the two wires of one end to pins 2 and 3 (pin 2 is an auxiliary input to compensate for the cable resistance) and one wire from the other end to pin 1. Leave the fourth wire unconnected, if present. · Power Supply Output: these terminals provide +5V and -5V DC signals to supply power to amplified electrodes. Note All cables connected to rear panel should end with cable lugs. 10 SETUP MODE pH 500 and mV 600 offer a multitude of possibilities from ON/OFF or proportional dosage to analog recorder output and from alarm to selftest features. The Setup Mode allows the user to set all needed characteristics of the meter. The setup mode is entered by pressing SETUP and entering the password when the device is in idle or control mode. Generally speaking, if the password is not inserted the user can only view the setup parameters (except for password) without modifying them (and the device remains in control mode). An exception is certain setup items, or flags, which can activate special tasks when set and confirmed. Each setup parameter (or setup item) is assigned a twodigit setup code which is entered and displayed on the secondary LCD. The setup codes can be selected after password and CFM are pressed. When CFM is pressed, the current setup item is saved on EEPROM and the following item is displayed. Whenever LCD is pressed, the device reverts back to control mode. The same is true when CFM is pressed on the last setup item. The possible transitions in setup mode are the following: ENTERING THE PASSWORD · Press SETUP to enter the setup mode. The LCD will display "0000" on the upper part and "PAS" on the lower. The first digit of the upper part of the LCD will blink. · Enter the first value of the password by the or keys. 11 · Then confirm the displayed digit with and move to the next one. · When the whole password has been inserted, press CFM to confirm it. Note The default password is set at "0000". · The LCD will display "SET" on the upper part and "c.00" on the lower, allowing the user to edit setup parameters (see table below). · Enter the code of the parameter you want to set, using the arrow keys as per the password procedure above (e.g.41). · Confirm the code by pressing CFM and the default or the previously memorized value will be displayed with the first digit blinking. Note When the password is not inserted or a wrong password is confirmed, the display will only show the previously memorized value, without blinking (read only mode). In this case, the value cannot be set. Press LCD and start again. · Enter the desired value using the arrow keys and then press CFM. 12 · After confirmation, the selected parameter is displayed. The user can scroll through the parameters by pressing CFM. In order to directly set another parameter, press SETUP again and enter the code or scroll to it by pressing CFM. The following table lists the setup codes along with the description of the specific setup items, their valid values and whether password is required to view that item ("PW" column): Code 00 Factory ID 01 Process ...