Related Manuals for Hanna Instruments HI8931A
Summary of Contents for Hanna Instruments HI8931A
- Page 1 Instruction Manual HI 8931A/B/C/D HI 8936A/B/C/D HI 8936AL/BL/CL/DL HI 943500A/B/C/D Conductivity Process Instrumentation This Instrument is in Compliance with the CE Directives W W W . H A N N A I N S T . C O M...
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Page 2: Table Of Contents
Dear Customer, PRELIMINARY EXAMINATION Thank you for choosing a Hanna Instruments Product. Remove the instrument from the packing Please read this instruction manual care- material and examine it carefully to make fully before using the instrument. sure that no damage has occurred during This manual will provide you with all the shipping. -
Page 3: Functional Description Hi8931/Hi943500
HI 943500 features a direct connection up FUNCTIONAL DESCRIPTION to 20 m (67'), without intermediate amplifi- HI 8931 & HI 943500 ers, to the conductivity probe HI 7638 with 7-pin DIN connector and automatic tempera- ture compensation. Four models with different measurement ranges are available to suit individual appli- cations: HI 8931A / HI 943500A... - Page 4 THE REAR PANEL OF HI 8931A/B/C/D THE REAR PANEL OF HI 943500A/B/C/D ALARM CONT Terminals for connec- 1. Conductivity Probe Connector (7-pin DIN) tion to an external alarm device 2. mA OUTPUT Terminals for connection SET CONT Terminals (Max. 2A, 220V) to a recorder for connection to a dosing pump 3.
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Page 5: Functional Description Hi8936
MECHANICAL DIMENSIONS FUNCTIONAL DESCRIPTION OF HI 8931 AND HI 943500 HI 8936 Front view of the panel-mounted unit 141mm 144mm HI 8936A 5.55" 5.67" HI8936B HI8936C HI8936D 69mm 2.71" 72mm 2.83" These dimensions show the cutout size for the installation. Side view of the panel-mounted unit HI 8936AL 0.25/4mm... -
Page 6: Mechanical Dimensions
SIDE VIEW MECHANICAL DIMENSIONS OF HI 8936A, HI8936B, HI 8936C, HI 8936A HI8936B HI8936C HI8936D HI 8936D HI 8936AL HI8936BL HI8936CL HI8936DL 165mm 6.50" 100mm 110mm 3.94" 4.33" 4 x 4.3mm 4 x 0.17" 155mm 90mm 6.10" 3.54" MECHANICAL DIMENSIONS OF HI 8936AL, HI8936BL, HI 8936CL, HI 8936DL 1. -
Page 7: Conductivity Probes
CONDUCTIVITY PROBES HI 7635 In-line Conductivity Probe HI7638 Tank Conductivity Probe HI 7635 is a one piece, molded conductivity HI 7638 conductivity probe combines the probe with pipe threads (1" NPT) at both proven 4-ring potentiometric method of mea- ends. suring conductivity with the platinum sensor and stainless steel external thread. -
Page 8: Specifications Hi8931 & Hi943500
SPECIFICATIONS HI 8931 & HI 943500 SPECIFICATIONS HI 8936 Range Range HI8931A - HI943500A 0.0 to 199.9 mS/cm HI8936A & AL 0.0 to 199.9 mS/cm 0.00 to 19.99 mS/cm 0.00 to 19.99 mS/cm HI8931B - HI943500B HI8936B & BL HI8931C - HI943500C 0 to 1999 µS/cm... -
Page 9: Connections
• Set Select CONNECTIONS These contacts permit REAR CONNECTIONS FOR HI 8931 the activation of a Set Contact relay when the measured value is lower (connected termi- • Power Connection Terminals nals) or higher (open (4-screw terminal strip) terminals) than the for connection to a 3- user's set value. - Page 10 TERMINAL BOARD CONNECTIONS tivity controller (see FOR HI 8936 also page 24). The 4-core cable has • Remove the 4 screws and the top cover of to be connected to the the HI 8936 conductivity transmitter to ob- transmitter according to tain access to the terminal board connections.
- Page 11 • Use of an amplifier REAR CONNECTIONS FOR HI 943500 The maximum permissible distance be- • Power Connection Terminals tween the power supply unit and the am- (4-screw terminal plifier is 300 m (1000'). It is not necessary strip) for connection to to use a shielded cable.
- Page 12 • Set CONDUCTIVITY PROBE CONNECTIONS Dosing pumps or other control equipment The connections may be connected to the "SET" (Max. 2A, for HI 7635 are 230V) terminals. These contacts act only color coded for as a "dry" switch allowing electrical conti- easy installation nuity, not as a power and are as fol-...
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Page 13: Operational Guide
mitter HI8936 to the terminals marked IN/ OPERATIONAL GUIDE OUT TRANSMITTER paying careful atten- tion to polarity. Connect the other 2 wires to the +20V and COMM terminals paying care- INITIAL PREPARATION & INSTALLATION: ful attention to polarity. Material needed: •... - Page 14 OPERATING INFORMATION core cable from the probe is connected to the The various parameters are set through the HI 8936 process conduc- front panel keys and trimmers. tivity transmitter When each key is pressed the correspond- shown. The connections are color coded ing LED is lit, indicating that the function is for an easy installation.
- Page 15 is lower than the set-point When the alarm is active the value and the SET ON LED ALARM LED is lit. will be lit. The alarm contacts of HI 8931 remain open Below set-point control operation during normal operation. If the measured con- Short the SET SELECT/ COMM.
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Page 16: Calibration Procedure Of Hi8931 & Hi8936 With Hi7635
• Ensure that there is no solution inside the CALIBRATION PROCEDURE OF HI 7635 conductivity probe (dry probe). HI8931 & HI8936 WITH HI7635 • When the power is on, the ammeter should Material Needed read "4.0 mA". The HI 8936L transmitter •... - Page 17 value obtained will be used for the trans- HI 8733 conductivity meter. E.g. mitter and controller calibration. "123.4 mS". • The reading will be converted to mA by the following formula: mA = K (measured value x 16 ) + 4 2000 K = conversion factor depending on the model Model...
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Page 18: Calibration Procedure Of Hi8931 & Hi8936 With Hi7638
CALIBRATION PROCEDURE OF HI8931 & HI8936 WITH HI7638 Material Needed • HI 7638 conductivity probe • HI 8931 conductivity controller • HI 8936 conductivity transmitter • An ammeter (for transmitters without LCD) • Calibration solutions, according to the dif- ferent models: •... - Page 19 • FOR HI 8931 • Pour enough conductivity When the reading stabilizes, turn the solution into a plastic bea- SLOPE trimmer on the front of the HI 8931 ker to achieve at least until the LCD reading is the same as the 8 cm (3¼") of depth.
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Page 20: Calibration Procedure Of Hi943500 With Hi7638
• Adjust the OFFSET trimmer if the LCD CALIBRATION PROCEDURE OF does not show the zero reading. HI943500 WITH HI7638 Material Needed • HI7638 conductivity probe • HI943500 conductivity controller • Calibration solutions, according to the dif- ferent models: HI7034 80mS/cm @25°C for HI943500A HI7030 12.88 mS/cm@25°C for HI943500B HI7031 1413 µS/cm @25°C for HI943500C HI7033 84 µS/cm @25°C for HI943500D... -
Page 21: Conductivity Versus Temperature Chart
of the calibration solution at 25°C (77°F), CONDUCTIVITY VERSUS i.e.: TEMPERATURE CHART 80.0 mS using HI7034 with HI943500A 12.88 mS using HI7030 with HI943500B °C °F HI7030 HI7031 HI7033 HI7034 HI7035 HI7039 1413 µS using HI7031 with HI943500C (µS/cm) (µS/cm) (µS/cm) (µS/cm) (µS/cm) (µS/cm) -
Page 22: Diagnostic Tests
B) Test Slope DIAGNOSTIC TESTS Press the TEST SLOPE key and the dis- play should indicate the following values: The HI 8931 and HI 943500 controllers are HI 8931/HI 943500A 100.0 mS ±5.0 mS designed with built-in diagnostic functions to HI 8931/HI 943500B 10.00 mS ±0.50 mS enable the user to check and troubleshoot the 1000 µS... -
Page 23: Installation Examples
Example #3 INSTALLATION EXAMPLES Some typical installation setups are depicted in the following examples: Example #1 Example #4 Example #2 Example #5... -
Page 24: Probe Maintenance And Cleaning
ACCESSORIES PROBE MAINTENANCE & CLEANING The probe can be compensated for normal CONDUCTIVITY BUFFER SOLUTIONS contamination by a process of re-calibration. However, it is recommended that the process HI 7030L 12880 µS/cm (µmho/cm) @25°C conductivity probe be removed from the sys- (77°F), 460 mL tem regularly for maintenance. - Page 25 CONDUCTIVITY PROBES: OTHER ACCESSORIES: HI7635 In-line conductivity probe, 3 m HI 731326 Small calibration screwdriv- (10') cable (for HI 8936 only) ers (20 pcs) HI 779/P 6-wire cable (100 m/330' roll) 142mm 52mm 5.60" 2.04" HI 8733 Portable conductivity meter with automatic temperature compensation 73mm...
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Page 26: Warranty
CE DECLARATION OF CONFORMITY WARRANTY All Hanna Instruments meters are warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instruc- tions. The probes are warranted for a period of six months. - Page 27 PRINTED IN MANCDPRCR2 PORTUGAL 04/98...