Hanna Instruments HI 710 - Manuals

7 REAR PANEL 1. Analog Output 2. Power Supply3. Alarm Terminal 4. Contact 2 - Second Dosing Terminal5. Timer6. Hold 7. Contact 1 - First Dosing Terminal8. Pt 100 Temperature Sensor connector 9. EC/TDS probe connector 10. Power supply output for external transmitter 11. 4-20 mA input from external tr...

8 SPECIFICATIONS Ranges 0.0 to 199.9 µS, 0 to 1999 µS (HI 700, HI 710 only) 0.00 to 19.99 mS, 0.0 to 199.9 mS (HI 700, HI 710 only)0.0 to 100.0 ppm, 0 to 1000 ppm (HI 705, HI 710* only)0.00 to 10.00 ppt, 0.0 to 100.0 ppt (HI 705, HI 710* only)-10.0 to 100.0 °C Resolution 0.1 µS, 1 µS (HI 700, HI 710...

9 INSTALLATION EC 700, TDS 705 and EC 710 offer a multitude of possibili-ties, from single anddual setpoints to ON/OFF or PID dosage,isolated outputs withuser-selectable zoom,recorder outputs inmAmps and volts.Use the 3-wire Pt 100temperature sensor tocompensate for thecable resistance andhave a pre...

11 Note If the meter does not detect the temperature probe, it willswitch automatically to manual temperature compensationwith the temperature adjustable through the up and downarrow keys. The “°C” symbol will blink on the LCD. Note All external cables to be connected to the rear panel shouldbe ende...

12 SETUP MODE HI 700, HI 705 and HI 710 offer a multitude of possibilities from ON/OFF or PID dosage to analog recorder output andfrom alarm to selftest features.The Setup Mode allows the user to set all needed character-istics of the meter.The setup mode is entered by pressing SETUPand entering the...

18 CONTROL MODE The control mode is the normal operational mode for thesemeters. During control mode the meter fulfills the followingmain tasks: • converts information from EC/TDS and temperature inputs to digital values; • controls relays and generates the analog outputs as deter- mined by the setu...

19 An upper boundary is imposed for dosage time when relaysare energized continuously, i.e. when relay works in ON/OFF mode or also in PID mode but in the latter case only ifthe relay is always ON. This parameter can be set throughsetup procedure. When the maximum boundary is reached,an alarm is gen...

24 FS•O = NC (Normally Closed) De-energized Relay C O M FS•C = NO (Normally Open) Energized Relay ALARM RELAY The alarm relay functions in the following manner: During alarm condition, the relay is de-energized. When notin alarm condition, the relay is energized.Example: High alarm set at 1400 µ S L...

25 This is an important feature since with most meters the alarmterminals close only when an abnormal situation arises, how-ever, due to line interruption, no alarmis sounded, causing extensive damage.On the other hand, software is em-ployed to set off the alarm in abnormalcircumstances, for example...

26 IDLE MODE Idle mode is entered through setup code 2.During idle mode the device performs the same tasks as whenit is in control mode except for the relays. The alarm relay isactivated (no alarm condition), the control relays are notactivated while the analog output remains activated.When the inst...

27 ANALOG OUTPUT All models are provided with the analog output feature.The output is isolated and can be a voltage or a current.With the recorder, simply connect thecommon port to the ground output andthe second port to the current outputor voltage output (depending on whichparameter is being used)...

28 output matching a different EC or TDS range, for example,4 mA = 30 mS and 20 mA = 50 mS.To change the default values, the setup mode must be en-tered. Setup codes for changing the analog output minimumand maximum are 41 or 42, respectively. For the exact pro-cedure, refer to the setup mode sectio...

31 Note To interrupt the calibration procedure press SETUP to restartthe procedure, or CAL to exit to normal operational mode. Note If the process meter has never been calibrated or an EE-PROM reset has occurred, the meter continues to performmeasurements. However, the user is informed of an EC orTD...

32 • Press SETUP key.• Using , and , enter the desired buffer value and confirm by pressing CFM. Note Press SETUP before CFM to exit without changes. Note It is suggested to calibrate the offset before entering the cali-bration buffer direct selection. TEMPERATURE CALIBRATION The controller is facto...

33 Calibration procedure may be interrupted by pressing CALagain at any time. If the calibration procedure is stopped thisway, or if the controller is switched off before the last step, nocalibration data is stored in non-volatile memory (EEPROM). ANALOG INPUT CALIBRATION The analog input is already...

36 LAST CALIBRATION DATA The meter can display the following last calibration data: • Date• Time• Cell constant While displaying these data, the controller remains in controlmode. The data are related to the selected range only.The procedure below indicates the flow. Displaying of theitems follows t...

37 FAULT CONDITIONS AND SELFTEST PROCEDURES The fault conditions below may be detected by the software: • EEPROM data error;• I2C internal bus failure;• date lost;• code dead loop. EEPROM data error can be detected through EEPROM testprocedure at startup or when explicitly requested using setupmenu....

40 WATCHDOG When a dead loop condition is detected a reset is automati-cally invoked.The effectiveness of watchdog capability can be tested throughone of the special setup items. This test consists of executinga dummy dead loop that causes watchdog reset signal to begenerated. EXTERNAL FUNCTIONS HOL...

41 STARTUP During the automatic startup the Real Time Clock (RTC) ischecked to see if a reset occurred since last software initial-ization. In this case, the RTC is initialized with the defaultdate and time 01/01/1998 - 00:00. An EEPROM reset doesnot affect the RTC settings.The EEPROM is also checke...

42 EC VALUES AT VARIOUS TEMPERATURES Temperature has a significant effect on conductivity. Tablebelow shows EC values at various temperatures for the Hannacalibration solutions. TEMPERATURE EC VALUES (µS/cm) °C °F HI7030 HI7031 HI7033 HI7034 HI7035 HI7039 HI8030 HI8031 HI8033 HI8034 HI8035 HI8039 0 ...

43 EC / TDS PROBE MAINTENANCE Probe can be compensated for normal contamination by aprocess of recalibration. When calibration can no longer beachieved, remove the conductivity probe from the system formaintenance. PERIODIC MAINTENANCE Inspect the probe and the cable. The cable used for the con-nect...

44 ACCESSORIES CONDUCTIVITY & TDS BUFFER SOLUTIONS HI 7030L 12880 µS/cm (µmho/cm), 460mL HI 7030M 12880 µS/cm (µmho/cm), 230mL HI 7031L 1413 µS/cm (µmho/cm), 460mL HI 7031M 1413 µS/cm (µmho/cm), 230mL HI 7033L 84 µS/cm (µmho/cm), 460 mL HI 7033M 84 µS/cm (µmho/cm), 230 mL HI 7034L 80000 µS/cm (µ...

46 WARRANTY All Hanna Instruments meters are guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained accordingto instructions. The probes are guaranteed for a period of six months. This warranty is limited to repair or replace- ment f...

47 CE DECLARATION OF CONFORMITY Recommendations for Users Before using these products, make sure that they are entirely suitable forthe environment in which they are used.Operation of these instruments in residential areas could cause unaccept-able interferences to radio and TV equipment.To maintain...