User manual HANNA INSTRUMENTS HI 720

[. . . ] Instruction Manual HI 720 Conductivity Process Controller with Inductive Probe w w w. h a n n a i n s t . c o m 1 TABLE OF CONTENTS WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 MODEL IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 GENERAL DESCRIPTION & THEORY OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 OPERATIONAL GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Each record is complete with the following information: 1. Errors: Error code and description, starting date & time, "ACTIVE" indication if the error is still active, or ending date & time if the error is closed. Calibration events: type of calibration, date & time, calibration points (if available). 3. Configuration changes: setup group, setup parameter, date & time of the modification, previous value, new value. If the description of the previous and/or new value is too long to be displayed, an index between square brackets is used. This index indicates the position of the value in the list of available options for the parameter. For example, if the Relay 1 mode is changed from "Control-setpoint 1" to "Control-setpoint 2", the recorded event will be "Control [2]" to "Control [3]", because "Controlsetpoint 1" is the second option of the list, while "Control-setpoint 2" is the third. Cleaning events: type of the cleaning action, date & time of the event. Note The logged event information can be downloaded to a PC through the HI 92500 application software. 44 45 TEMPERATURE COMPENSATION If the setup item b. 01 is set to ATC, then an automatic temperature compensation of the conductivity readings will be performed using the temperature values acquired through the Pt100/Pt1000 input. If the temperature probe is not connected or it provides an invalid temperature (outside the -30 to 130°C range), the instrument will generate a "broken temperature probe" error, which will be handled as stated in the error configuration. In this case the temperature compensation will be automatically switched to the MTC option. The instrument continues to monitor the Pt100/Pt1000 input to track the Pt100/Pt1000 error closing. When this error is closed, the setup item b. 01 will automatically change back to ATC. If the user set the parameter b. 01 to MTC, then a manual temperature compensation will be performed in any case, even if a temperature probe is connected. The user can also select the temperature compensation algorithm through the setup item b. 10: Linear, NaCl or User defined table. Linear Temperature Compensation The linear temperature compensation is performed according to the following formula: Ccomp = Cact / [1+(T-Tref)/100] where · Ccomp is the compensated conductivity value · Cact is the actual conductivity value (not compensated) · T is the measured temperature · Tref is the reference temperature (selectable at 20 or 25°C). The temperature coefficient () must be manually adjusted by the user when changing the reference temperature. If is the coefficient with Tref=25°C, the coefficient with Tref=20°C must be calculated as follows: = / (1 - /20). For example, if =1. 90 %/°C, then = 2. 10 %/°C. NaCl Temperature Compensation For the NaCl algorithm, the compensation formula is the same as for the linear method, but with depending on the temperature value according to the IEC 746-3 BII table. Note that the table reports values referred to 18°C and the HI720 adjusts that values according to Tref as follows: = 18/[1 + 18(Tref-18)]. User Defined Table for Temperature Compensation The compensation formula is the same as for the linear method, but the instrument calculates the temperature coefficient based on the table defined by the user through the setup items b. 31 to b. 34. 46 Up to 10 actual conductivity/temperature couples can be entered to define the curve for the temperature compensation. [. . . ] A new output value can be edited manually. Use the up & down arrow keys to change each digit, and the right arrow to move to the next digit. 78 79 ACCESSORIES CONDUCTIVITY CALIBRATION SOLUTIONS HI HI HI HI HI HI HI HI HI HI HI HI HI HI HI HI HI BL HI HI HI HI HI HI HI HI 7030L 8030L 7031L 8031L 7034L 8034L 7035L 8035L 7039L 8039L 7061M 7061L 8061M 8061L 504900 504901 504902 Pumps 7610 7611 7620 7621 92500 931002 98501 98502 12880 S/cm, 500 mL bottle 12880 S/cm, 500 mL FDA bottle 1413 S/cm, 500 mL bottle 1413 S/cm, 500 mL FDA bottle 80000 S/cm, 500 mL bottle 80000 S/cm, 500 mL FDA bottle 111800 S/cm, 500 mL bottle 111800 S/cm, 500 mL FDA bottle 5000 S/cm, 500 mL bottle 5000 S/cm, 500 mL bottle General cleaning solution, 230 mL bottle General cleaning solution, 500 mL bottle General cleaning solution, 230 mL FDA bottle General cleaning solution, 500 mL FDA bottle Hanna GSM module Hanna GSM supervisor Hanna RS485 modem Dosing pumps with flow rate from 1. 5 to 20 LPH Stainless steel Pt100 probe with 5 m (16. 5') cable Glass Pt100 probe with 5 m (16. 5') cable Stainless steel Pt1000 probe with 5 m (16. 5') cable Glass Pt1000 probe with 5 m (16. 5') cable Windows® compatible software 4-20 mA Simulator ChecktempC temperature tester (range -50 to 150°C) ChecktempF temperature tester (range -58 to 302°F) INDUCTIVE CONDUCTIVITY PROBES PROBE CLEANING SOLUTIONS OTHER ACCESSORIES Currently available models Inductive conductivity probe with 45 mm head OD, PVC sensor, wire direct connection, and 5, 10 or 15 m cable: HI 7650-1005 · HI 7650-1010 · HI 7650-1015 Inductive conductivity probe with 45 mm head OD, PVC sensor, wire direct connection & Pt100 sensor, and 5, 10 or 15 m cable: HI 7650-1105 · HI 7650-1110 · HI 7650-1115 80 81 Recommendations for Users Before using these products, make sure that they are entirely suitable for the environment in which they are used. Operation of these instruments in residential areas could cause unacceptable interferences to radio and TV equipment. To maintain the EMC performance of equipment, the recommended cables noted in the user's manual must be used. [. . . ]