HI 23 / HI 24 Series Wall-mounted, Microprocessor-based, Conductivity and TDS Process Controllers Instruction Manual 1 Dear Customer, Thank you for choosing a Hanna Product. This instruction manual refers to the following products: HI 23211 HI 23212 HI 23221 HI 23222 EC controller with dual setpoint, ON/OFF control and analog output EC controller with dual setpoint, ON/OFF control and RS 485 port EC controller with dual setpoint, ON/OFF and PID control, and analog output EC controller with dual setpoint, ON/OFF and PID control, and RS 485 port EC and TDS controller with dual setpoint, ON/OFF control and analog output EC and TDS controller with dual setpoint, ON/OFF control and RS 485 output EC and TDS controller with dual setpoint, ON/OFF and PID control, and analog output EC and TDS controller with dual setpoint, ON/OFF and PID control, and RS 485 port HI 24211 HI 24212 HI 24221 HI 24222 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 the directives. © 2001 Hanna Instruments 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 MAIN FEATURES OF DIFFERENT MODELS ......................... 5 FUNCTIONAL DESCRIPTION ............................................7 MECHANICAL DIMENSIONS ............................................9 SPECIFICATIONS .......................................................... 10 INSTALLATION .............................................................. 11 SETUP MODE .............................................................. 14 CONTROL MODE ........................................................ 21 IDLE MODE ................................................................. 29 ANALOG OUTPUT ....................................................... 30 CALIBRATION ...............................................................32 LAST CALIBRATION DATA ............................................... 40 FAULT CONDITIONS AND SELFTEST PROCEDURES ........... 41 EXTERNAL FUNCTIONS ................................................. 45 RS 485 COMMUNICATION ............................................46 STARTUP ......................................................................53 EC VALUES AT VARIOUS TEMPERATURES ..........................54 EC / TDS PROBE MAINTENANCE ................................... 55 ACCESSORIES .............................................................. 56 WARRANTY ................................................................. 58 CE DECLARATION OF CONFORMITY ............................. 59 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 HI 23 and HI 24 series are real time microprocessor-based EC or TDS controllers. They provide accurate measurements, flexible ON/OFF or proportional control capabilities, analog input and output, dual setpoint and alarm signal. The system is composed of a case inside which the signal conversion circuitry, the microprocessor circuitry and the output power drivers are contained. GREAT FLEXIBILITY The HI 23 and HI 24 controller series offer a great flexibility with the possibility to connect a large variety of peripherals, such as pumps, valves, relays and other control devices. Each output can be fully programmed. The input can be from a conductivity probe or from a 4-20mA transmitter. A programmable analog output can be used for monitoring or other purposes. The controller also has the capability to communicate with a computer via RS485 bus and to be part of an RS485 network. This allows the control of any process where conductivity is involved. The figure below illustrates the connection possibilities of advanced Hanna controllers, such as HI 23 or HI 24. 4 MAIN FEATURES OF DIFFERENT MODELS · Display: large LCD with 4 ½ 13 mm digits and 3 ½ 7.7 mm digits. · LEDs: four LEDs are provided for signaling the energizing of relays 1 and 2 (yellow LEDs) and alarm relay (a green and a red LED). · Relays: 2 output relays for low conductivity or high conductivity dosage (COM, NO and NC contacts) and 1 output relay for alarm condition (COM, NO and NC contacts). 5 · Calibration and Setup procedures allowed only through an unlock password. · Calibration: 2 points with Hanna EC and TDS calibration solutions. · Four different EC working ranges (0 to 199.9µS; 0 to 1999µS; 0 to 19.99mS; 0 to 199.9mS). · Four different TDS working ranges (0 to 100.0ppm; 0 to 1000ppm; 0 to 10.00ppt; 0 to 100.0ppt) for HI 24 series. · Possibility to switch to TDS measurements with conversion factor from 0.00 to 1.00 (HI 24 series). · Temperature compensation of the HANNA standard solutions. · Temperature compensation of the EC and TDS reading with temperature coefficient ß selectable from 0 to 10%/°C. · Use of a 3-wire Pt 100 temperature sensor to compensate for the cable resistance and have a precise automatic temperature compensation of the measurements in long distance applications. · Manual temperature setting when the temperature probe is not inserted or the temperature exceeds the upper range. · Last calibration data internally recorded (nonvolatile EEPROM memory): calibration date and time, cell constant, calibration solution values. · Input: 4-ring EC/TDS probe with cell constant 2.0 ± 10%, or 4-20mA analog input from a transmitter. · Analog output (HI 23xy1 and HI 24xy1) - 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. · Serial comunication via RS485 with the possibilities to set the working parameters and to read the displayed data (HI 23xy2 and HI 24xy2). 6 FUNCTIONAL DESCRIPTION 1. Liquid Crystal Display 2. CAL DATA key last calibration data viewing (enters and exits) 3. LCD key exits from setup and reverts back to normal mode (in idle or control phases with the measurement on the display). During EC/TDS calibration, it alternates EC/TDS buffer value and current cell constant on the display. In HI 24 series, it switches between EC and TDS reading 4. CAL key initiates and exits calibration mode 5. SETUP key enters setup mode 6. key moves to the next digit/letter (circular solution) when selecting a parameter. Same as key during last calibration data viewing mode 7. 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 8. CFM key confirms current choice (and skips to the next item) 9. 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 10. LEDs 7 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. RS 485 communications terminal (HI 23xy2 and HI 24xy2 models only) Analog Output terminal (HI 23xy1 and HI 24xy1 models only) Pt 100 Temperature Sensor terminal Power supply output for external transmitter 4-20 mA input from external transmitter Main Power Supply Alarm Terminal Contact 1 - First Dosing Terminal Contact 2 - Second Dosing Terminal EC/TDS probe connector Hold terminal Timer terminal Unplug the meter before any electrical connection. Note The connections of terminals 1 to 5 are numbered from 1 to 15 from top to bottom and the connections of terminals 11 and 12 are numbered from 16 to 19 from top to bottom. 8 MECHANICAL DIMENSIONS 9 SPECIFICATIONS Ranges 0.0 to 199.9 µS/cm, 0 to 1999 µS/cm 0.00 to 19.99 mS/cm, 0.0 to 199.9 mS/cm 0.0 to 100.0 ppm, 0 to 1000 ppm (HI 24* series only) 0.00 to 10.00 ppt, 0.0 to 100.0 ppt (HI 24* series only) -10.0 to 100.0 °C 0.1 µS/cm, 1 µS/cm 0.01 mS/cm, 0.1 mS/cm 0.1 ppm, 1 ppm (HI 24 series only) 0.01 ppt, 0.1 ppt (HI 24 series only) 0.1 °C ±0.5 % full scale (EC and TDS) ±0.5°C between 0 to 70°C, ±1°C outside Resolution Accuracy (@20°C/68°F) Temperature Compensation Automatic from -10 to 100°C or manual with Temperature Coefficient from 0.00 to 10.00%/°C Typical EMC Deviation Installation Category Probe ±2 % full scale (EC and TDS) ±0.5 °C II HI 7639D 4-ring EC/TDS probe (K=2) with built-in 3-wire Pt100 temperature sensor and 5 m cable HI3012D + HI5001/5 (external temperature sensor) 4 - 20 mA 0-10VDC, 0-5VDC or 1-5VDC (HI 23xy1 and HI 24xy1) 0-20mA or 4-20mA, 0-1mA (HI 23xy1 and HI 24xy1) 1200, 2400, 4800 and 9600 (HI 23xy2 and HI 24xy2) 230 ±10% VAC or 115 ±10% VAC, 50/60 Hz 15 VA Electromechanical relay SPDT contact outputs, 5A-250 VAC, 5A - 30 VDC (resistive load) Fuse protected: 5A, 250V FUSE 0-50 °C; max 95% R.H. non-condensing 189 x 228 x 102 mm (7.4 x 9 x 4") Fiber-reinforced, self-extinguishing ABS approximately 1.6 kg (3.5 lb.) Analog Input Analog Output RS485 baud rate Power Supply Power Consumption Relays 1, 2 and Alarm Relay Environment Enclosure Case Material Weight 10 Over Current Protection 200 mA 250V FAST FUSE * Note: actual TDS range for HI 24 series depends on TDS factor set. INSTALLATION HI 23 and HI 24 series offer a multitude of possibilities, from dual setpoints to ON/OFF or PID dosage, isolated outputs with user-selectable zoom, recorder outputs in mA and volts. Use the 3-wire Pt 100 temperature sensor to compensate for the cable resistance and have a precise automatic temperature compensation of the measurements in long distance applications. See the below diagram for a recommended installation. CONDUCTIVITY PROBE Note All external cables to be connected to the right panel should end with cable lugs. Use wires with cable lugs when connecting to the strip contacts. Always disconnect the power cord when wiring the controller. 11 · 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: 230VAC - 50 mA. Line Contact: 200mA fuse inside. PE leakage current 1 mA; this contact must be connected to ground. · Conductivity input: the default input is from conductivity probe. Connect the EC probe to the terminals #10 on page 8. HI7639D is a conductivity probe with built-in temperature sensor. · Pt 100 Terminals (to be used only if the EC probe is without Pt 100): connect to these contacts (#3 on page 8) the Pt 100 temperature sensor for automatic temperature compensation of measurement. Follow the below diagram for connecting a 3-wire Pt 100 sensor as HI5001/5: Color GRAY BROWN YELLOW Pin # 8 9 10 If using a different Pt 100, separated from the conductivity probe, connect the cable shield to pin 11, and the other wires as explained below. In the case of a 2-wire sensor connect the Pt 100 to pins 8 and 10, and short pins 9 and 10 with a jumper wire. 12 If the Pt 100 has more than 2 wires, connect the two wires of one end to pins 9 and 10 (pin 9 is an auxiliary input to compensate for the cable resistance) and one wire from the other end to pin 8. Leave the fourth wire unconnected, if present. Note If the meter does not detect the temperature probe, it will switch automatically to manual temperature compensation with the temperature adjustable through the up and down arrow keys. The "°C" symbol will blink on the LCD. All external cables to be connected to the right panel should end with cable lugs. · Analog output: In the models where it is available, connect an external recorder with a 2-wire cable to these terminals (#2 on page 8) paying attention to the correct polarity. A wide variety of output signals, either in V or in mA, is available to fit most standards. Terminal 5 is the voltage output, terminal 6 is the analog output common and terminal 7 is the current output. · Contact 1 and 2: Connect the dosing devices to these terminals (#8 and #9 on page 8) in order to activate and deactivate them according to the selected control parameters. · mA Input: to switch to mA input signal from a conductivity transmitter (e.g. HI8936 or ...