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JUMO CTI-750 Inductive Conductivity/Concentration and Temperature Transmitter with Switch Contacts Operating manual 20275616T90Z001K000 V3.00/EN/00488788...
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WARNING! A sudden failure of the instrument or of a sensor connected to it could result in dangerous overdosing. Please take suitable precautionary measures for this case. NOTE! All the nececssary settings are described in this manual. However, if any difficulties should arise during start-up, please do not carry out any unauthorized manipulations.
1 Typographical conventions Warning signs DANGER! This symbol is used when there may be danger to personnel if the instruc- tions are ignored or not followed correctly! CAUTION! This symbol is used when there may be damage to equipment or data if the instructions are ignored or not followed correctly! Note signs NOTE!
2 General Foreword Please read the operating manual before you commission the device. Store the operating manual at a place that is accessible for all users at all times. NOTE! All the required settings are described in this manual. Should there be any difficulties nonetheless at the time of commissioning, we request you not to carry out any impermissible manipulations.
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2 General 2.2.2 Transmitter with separate sensor Example Transmitter (with or without graphics LC-display) Process connection Temperature sensor Inductive conductivity measuring probe...
3 Inductive conductivity measurement Range of Applications General The inductive measurement process allows a mostly maintenance-free acqui- sition of the specific conductivity even in difficult medium conditions. In con- trast to the conductive measurement process, problems like electrode replacement and polarization do not occur. Brief description The device is used for the measurement/control of the conductivity/concentra- tions of liquid media.
3 Inductive conductivity measurement Function of the transmitter The device is conceived for use at the location. A robust housing protects the electronics and the electrical connections from aggressive ambient influences (system of protection IP67). In the standard version, the device has one analog signal input for the conductivity/concentration and the temperature.
4 Identifying the device version Nameplate On the transmitter The nameplate is affixed to the case. On the separate sensor The nameplate (flag tag) is affixed to the connecting cable. Contents The nameplate contains important information. This includes: Description Description on the Example nameplate Device type...
JUMO CTI-750 head transmitter in plastic housing, without display/keypad 202756/15 JUMO CTI-750 head transmitter in plastic housing, with display/keypad 202756/16 JUMO CTI-750 head transmitter in stainless steel housing, with display/keypad (2) Process connection Screw connection G 1 ½ A Screw connection G 2 A...
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202756/66 JUMO CTI-750 transmitter in stainless steel housing, with display/keypad (with sensor) cable length 10 m 202756/80 JUMO CTI-750 replacement sensor with 10 m cable for transmitter in plastic b, c housing (without transmitter) 202756/85 JUMO CTI-750 replacement sensor with 10 m cable for transmitter in stainless...
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4 Identifying the device version Cell material PEEK Cell material PVDF Supply voltage 24 V AC Hygienic design The PC setup program is required for programming the device, see accessories. A calibration kit is absolutely essential for commissioning. If not available, please include in your order (see accessories).
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4 Identifying the device version Accessories Type Part No. Flange DN 32, material: PP 00083375 Flange DN 50, material: PP 00083376 Weld-on threaded adapter DN 50, DIN 11851 00085020 Ring nut DN 50, DIN 11851 00343368 Ring nut SMS DN 2“, Mutter 00345162 M12 plug connector, 8-pole, straight, for assembly by user 00444307...
5 Device description Technical data 5.1.1 Conductivity transmitter A/D converter Resolution 15 bits Sampling time 500 ms = 2 measurements/s Power supply For SELV and PELV circuit operation only. Standard 19 - 31 V DC (24 V DC nominal) Residual ripple <5 % Reverse polarity protection Extra code 844...
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5 Device description 5.1.2 Measuring ranges There is a choice of four different measuring ranges. Any one of these ranges can be activated by an external switch or by a PLC. NOTE! The overall accuracy is composed of transmitter accuracy + sensor accuracy.
5 Device description 5.1.3 Temperature transmitters Temperature acquisition Manually, -20.0 to 25.0 to 150 °C or °F, or automatically Measuring range -20 - 150 °C or °F Characteristic linear ≤ 0.5 % of the measuring range Accuracy ≤ 0.1 %/K Ambient temperature effect Output signal 0 - 10 V or 10 - 0 V...
6 Mounting General 6.1.1 Installation location The compatibility of the material with the measurement medium must be checked by the customer. Ensure easy accessibility for subsequent calibration. The fastening must be secure and low-vibration. Avoid direct sunlight. It is necessary to pay attention to a good flow through and around the sensor (3). When installing in a pipe, a minimum distance of 20 mm must be maintained from the sensor to the pipe wall.
6 Mounting Dimensions head transmitter 6.2.1 Process connections Version with process connection Version with process connection 108 = screw-in thread G 1 1/2 A 107 = screw-in thread G 1 1/4 A 110 = screw-in thread G 2 A 108 = screw-in thread G 1 1/2 A and extra code 767 110 = screw-in thread G 2 A and extra code 768...
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6 Mounting 2 (607) Version with process connection Version with process connection 607 = MK DN 50 606 = MK DN 40 608 = MK DN 65 607 = MK DN 50 609 = MK DN 80 608 = MK DN 65 and extra code 767 609 = MK DN 80 and extra code 768...
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6 Mounting 1 (617) 2 (616) Version with process connection Version with process connection 616 = Clamp 2" 617 = Clamp 2 1/2" 617 = Clamp 2 1/2" and extra code 768 and extra code 767 and 941 (retaining clip not included in delivery) (retaining clip not included in delivery) Version with process connection ®...
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6 Mounting < 200Nm < 200Nm Version with process connection Version with process connection 690 = SMS 2" 690 = SMS 2" < 200Nm) < 200Nm) and extra code 767 and 941 and extra code 768 1 = stainless steel 1.4301 2 = PEEK 3 = PVDF...
6 Mounting The device with separate sensor 6.3.1 Operating unit Transmitter with separate sensor, in plastic housing with basic type extension 20 or 25 and electrical connection 82 ø110 6.3.2 Wall mounting...
6 Mounting 6.3.3 Process connections Version with process connection Version with process connection 108 = screw-in thread G 1 1/2 A 107 = screw-in thread G 1 1/4 A 110 = screw-in thread G 2 A 108 = screw-in thread G 1 1/2 A and extra code 767 110 = screw-in thread G 2 A and extra code 768...
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6 Mounting 2 (607) Split version with process connection Split version with process connection 607 = MK DN 50 606 = MK DN40 608 = MK DN 65 607 = MK DN50 609 = MK DN 80 608 = MK DN65 and extra code 767 609 = MK DN80 (retaining clip not included in delivery)
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6 Mounting 1 (617) 2 (616) Split version with process connection Split version with process connection 616 = Clamp 2" 617 = Clamp 2 1/2" 617 = Clamp 2 1/2" and extra code 768 and extra code 767 (retaining clip not included in delivery) (retaining clip not included in delivery) 1 = stainless steel 1.4301 2 = PEEK...
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6 Mounting Split version with process connection Split version with process connection 690 = SMS 2" 690 = SMS 2" and extra code 767 and extra code 768 (retaining clip not included in (retaining clip not included in < 200Nm) <...
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6 Mounting ø18 ø100 ø165 Optional accessory DN 32 Flange Part no. 00083375 ø18 ø125 ø165 Split version with process connection 706 Optional accessory immersion model DN 50 Flange (pipe clips not included in delivery) Part no. 00083376 3 = PVDF 6 = PBT 7 = brass nickel plated EPDM...
6 Mounting Mounting examples Threaded pipe adapter Process connection 607, screwed pipe fitting DN 50, DIN 11851 (MK DN 50, milk cone), PEEK Ring nut DN 50, stainless steel 1.4301 Weld-on threaded pipe adaptor DN 50, DIN 11851, stainless steel 1.4404 (matching part for process connection 607) Tee DIN 11852, short, DN 50, stainless steel 1.4301 (to be provided by the plant operator;...
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6 Mounting Clamp Process connection 617, Clamp 2 1/2", PEEK Clamping ring , stainless steel 1.4301 (to be provided by the plant operator; not supplied by device manufacturer) Tee, short, 2.5" - 2" similar to DIN 11852, and 2" clamp adapter, stainless steel 1.4301 (to be provided by the plant operator;...
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6 Mounting 6.4.1 Kit for pipe mounting NOTE! The pipe-mounting kit is also suitable for horizontal pipes. for type 202756, part no. 00515128...
7 Installation DANGER! The electrical connections may only be set up by technically qualified personnel. • When selecting the conductor material for the installation and for the elec- trical connections of the device, compliance is required with the specifica- tions of VDE 0100 "Regulations governing the installation of heavy-current systems with rated voltages below 1000 V"...
7 Installation General Open the operating unit Unscrew the cover (1) Remove captive fastening screw (2) and carefully take out operating unit. Connect the cables SETUP CAUTION! For connecting the individual cores, pull out the threaded plug therminals (1) in the operating unit. Lead the connecting cables through the cable glands (2).
7 Installation Wiring DANGER! In the case of devices with a separate sensor, for every instrument, the transmitter and the separate sensor are matched to one another at the factory. When connecting the components, ensure that the production number of the external sensor (on the flag tag on the connecting cable) is identical to the production number of the transmitter (on the nameplate).
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7 Installation ATTENTION! In devices with a separate sensor and M12 plug / socket connectors, the screw terminals in the device are painted over. Removing this paint voids the warranty! SETUP Terminal assignment Symbol Supply Supply (with reverse-polarity protection) Outputs Analog signal output: conductivity/concentration (electrically isolated)
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7 Installation Terminal assignment Symbol Binary inputs Binary input E1 Binary input E2 7.2.2 Transmitter with electrical connection 83 (M12 plug-and-socket connection) Head transmitter Connector I Power supply and actual value output for conductivity/concentration M12 flush-type connector, 5-pin Blanking plug Connector II Actual value output for temperature, and binary input and switching outputs M12 flush-type connector, 8-pin...
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7 Installation ATTENTION! In devices with a separate sensor and M12 plug / socket connectors, the screw terminals in the device are painted over. Removing this paint voids the warranty! Supply Connector Assignment Symbol Supply (with reverse-polarity protection) Outputs Analog signal output: conductivity/concentration (electrically isolated) Analog signal output:...
8 Setup-Program Function Configurable parameters With the optional Setup program that is available, the transmitter can be com- fortably matched to the requirements. • Setting the measurement range and the measurement range limits. • Setting the behavior of the outputs in case of overshooting of the measure- ment range.
9 Commissioning CAUTION! The measuring transmitters are checked in the factory for flawless operabil- ity and shipped ready for operation. Head transmitter or transmitter with separate sensor Install the device, see "Mounting", page 19. Connect the device, see "Installation", page 33. DANGER! In the case of devices with a separate sensor (base type supplementation (2) 66), for every instrument, the transmitter and the separate sensor are...
10 Operation 10.1 Operating elements Graphical LC-display, background lit up. , confirm inputs, select menu. , interrupt inputs without saving/interrupt calibration. EXIT One menu-level back. , increase numerical value/forward the selection. , decrease numerical value/forward the selection. LEDs "K1"/"K2" indicate the status of the switching outputs. In normal operation, the LED flows when the corresponding switching output is active.
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10 Operation LC-Display (11) (10) Output K1 is active Output K2 is active Binary input 1 is triggered Binary input 2 is triggered Keyboard is locked Device status (hints) • Alarm (e.g. overrange • Calib. flashing (calibration timer • Calib (customer calibration enabled) Output mode •...
10 Operation 10.4 Measurement mode Depiction In the measurement mode, the conductivity compensated to the reference temperature, or the concentration, and the temperature of the measurement medium are displayed. MEASUREMENT -> Measurement mode 20.5 °C -> Temperature of the measurement medium 203 mS/cm ->...
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10 Operation 10.5.1 INPUT CONDUCTIVITY (Input conductivity) MEASUREMENT RANGE 1 ... 4 0 to 500 µS/cm 0 to 1000 µS/cm 0 to 2000 µS/cm 0 to 5000 µS/cm 0 to 10 mS/cm 0 to 20 mS/cm 0 to 50 mS/cm 0 to 100 mS/cm 0 to 200 mS/cm 0 to 500 mS/cm...
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10 Operation CONCENTR. MEASUREMENT NO FUNCT. NaOH HNO3 CUST. SPEC. (The input of the values is only possible with the optional Setup program) CONCENTR. RANGE In case of HNO 0 to 25 % by WEIGHT 36 to 82 % by WEIGHT In case of NaOH 0 to 15 % by WEIGHT 25 to 50 % by WEIGHT...
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10 Operation 10.5.2 OUTPUT CONDUCTIVITY. (Output conductivity) SIGNAL TYPE 0 to 20 mA 4 to 20 mA 20 to 0 mA 20 to 4 mA 0 to 10 V 2 to 10 V 10 to 0 V 10 to 2 V SCALING START 1 ...
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10 Operation 10.5.3 INFLOW TEMPERATURE UNIT °C °F MEASUREMENT VALUE ACQUISITION Sensor manual MANUAL SPECIFICATION -20.0 to 25.0 to 150.0 °C OFFSET -15.0 to 0.0 to +15.0 °C FILTERING TIME 00:00:00 to 00:00:01 to 00:00:25 H:M:S 10.5.4 OUTFLOW TEMPERATURE SIGNAL TYPE 0 to 20 mA 4 to 20 mA 20 to 0 mA...
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10 Operation MANUAL OPERATION MANUAL VALUE 0,0 to 4,0 to 22,0 mA (depending on the signal type) 0 to 10.7 V 10.5.5 OUTPUT BINARY 1 and OUTPUT BINARY 2 FUNCTION NO FUNCTION COND. MIN. COND. MAX. COND. AF1 COND. AF2 TEMP.
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10 Operation Wiper contact Wiper contact Triggering condition longer than Triggering condition shorter than pulse duration pulse duration LIMIT VALUE -20.0 to 999.0 (depending on the function, see above) HYSTERESIS 0.0 to 1.0 to 999.0 (depending on the function, see above) DISTANCE 0.0 to 999.0 (depending on the function, see above) MANUAL OPERATION...
10 Operation 10.5.6 INPUT BINARY 1 and INPUT BINARY 2 FUNCTION NO FUNCTION KEYBOARD LOCK/HOLD MEASUREMENT RANGE./TEMP C. DESALINATION FUNCTION. Setting parameters binary input 1 binary input 2 Measurement range- / MB1/Tk1 open open Temperature- MB2/Tk2 closed open coefficient switching MB3/Tk3 open closed...
10 Operation 10.5.8 DEVICE DATA LANGUAGE GERMAN ENGLISH FRENCH SPANISH POLISH SWEDISH ITALIAN PORTUGUESE DUTCH RUSSIAN NOTE! By inputting the password 7485 in the Administrator level, the operating lan- guage is reset to English. CONTRAST 0 to 6 to 11 LIGHTING FOR OPERATION (about 50 s after the last keystroke,...
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10 Operation Levels of the Administrator level 10.6.1 Parameter level In this level, the Administrator can edit any parameter of the operator level. The structure of the parameter level in the Administrator level is identical to the operator level, see "Operating level", page 46 and onwards. 10.6.2 Release level In this level, the Administrator can determine which parameters the operator is permitted to modify in the operator level.
10 Operation 10.7 Calibration level In this level, the calibrations released by the Administrator (Administrator level) can be carried out. Press the key for longer than 3 seconds. With the keys , select "CALIBRATION-LEVEL". 10.7.1 REL. CELL CONSTANT. (relative cell constant) If this function has been released by the Administrator, the operator can cali- brate the relative cell constant of the device here;...
10 Operation 10.8 The desalination function Brief description In the case of cooling water, using the conductivity, the total salt content is assessed. Upon reaching a limiting conductivity (at maximum permissible salt concentration/densification), dilution of the cooling water is necessary. For this purpose, a desalination valve is opened, densified water flows out and is sup- plemented with fresh water.
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10 Operation 10.8.1 Setting the desalination function All the parameters are plant-dependent and must be matched to the prevalent conditions. Press the key for longer than 3 seconds. With the keys , select the "OPERATOR LEVEL"; with key , con- firm the selection.
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10 Operation Use the key to switch to the operator level. EXIT With the key select "DESALINATION FUNCTION". With key , confirm the selection. Set the desalination reduction with the keys in the range from 1 to 10 to 50% below the actual limit value. with key , confirm the setting.
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10 Operation Set the locking time with the keys in the range from 0:00:00 to 00:01:00 to 18:00:00 H:M:S. with key , confirm the setting. NOTE! If there is a failure of the supply voltage during the running of the desalina- tion function, the function is canceled.
11 Calibration 11.1 General For increasing the accuracy, the device has various calibration options. NOTE! At regular intervals (depending on the measurement medium), the conduc- tivity sensor must be cleaned and calibrated. The LED "K1" flashes during the calibration. 11.2 Calibration of the relative cell constant In case of increased demands on the accuracy, the cell constant must first be calibrated.
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11 Calibration With the keys , select "REL. CELL CONSTANT.". with key confirm the selection. When the measured value is stable, press the key. With the keys , correct the displayed uncompensated conductiv- ity value to the conductivity value of the reference solution. Press the key.
11 Calibration 11.3 Calibration of the temperature coefficient of the mea- surement solution 11.3.1 Linear temperature coefficient (ALPHA) The conductivity of any measurement solution changes according it its spe- cific temperature coefficient. We therefore recommend carrying out the calibration of the temperature coef- ficient Precondition •...
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11 Calibration With the keys , input the operating temperature and confirm with key . NOTE! The operating temperature must be at least 5 °C above or below the refer- ence temperature (25.0 °C). The LC-Display now shows the selected operating temperature (flashing) the reference temperature (flashing) the current sensor temperature (static) Heat the measurement medium till both the reference temperature as well...
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11 Calibration The LC-display now shows the determined temperature coefficient in %/K. Accept the temperature coefficient determined -> press the key for longer than 3 seconds, or discard the value -> press the key EXIT The transmitter is in the "Calibration menu". Press key EXIT The transmitter is in "Measurement mode"...
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11 Calibration 11.3.2 Non-linear temperature coefficient (ALPHA) General Since the temperature coefficient of some media is not constant over a larger temperature range, the device has the facility to divide a temperature range to T ) into 5 sub-ranges. In each of these ranges, compensation can start be carried out with different TC values.
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11 Calibration TC-curve Temperature compensation with the TC-curve With the help of the current medium temperature, the corresponding tempera- ture coefficient is determined from the TC curve, see "TC-curve", page 67. Intermediate values, e.g. (α in the case of T ) between two determined values (α...
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11 Calibration Sequence of the automatic calibration The TC curve is plotted automatically in a temperature range determined by the user. Here, the temperature range from the starting to the final temperature is divided into 5 equal sections. The temperature range must be greater than 20 Kelvin and overlap the refer- ence temperature.
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11 Calibration With the keys , input the starting temperature and confirm with key . NOTE! The starting temperature must be below the reference temperature (25.0 °C). With the keys , input the final temperature and confirm with the key . NOTE! The final temperature must be at least 20 °C above the starting temperature.
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11 Calibration Heat the measurement medium till the flashing temperature is exceeded or undershot. The next temperature to be reached is displayed flashing. CAUTION! During the calibration, the temperature changing speed of the measurement solution of 10 K/min in the case of the device with a free-standing temperature sensor 1 K/min in the case of the device with an integrated temperature sensor must not be exceeded.
12 Maintenance 12.1 Conductivity-clean sensor CAUTION! Do not use any solvents. Stubborn sediments or deposits can be dissolved with dilute hydrochloric acid and removed. Comply with the safety specifications. Deposits Deposits on the sensor part can be removed with a soft brush (e.g. bottle brush).
13 Rectifying errors and faults Error possibilities Problem Possible cause Measure No display of measured value Voltage supply absent Check voltage supply, check terminals signal output Measured value display Sensor not submerged in me- Fill up tank 000 or dium; signal output 0 % Tank level too low (e.g.
13 Rectifying errors and faults 13.1 Device checking General The device is calibrated at the factory and is maintenance-free. If measure- ment value variations from unknown causes should occur nonetheless, the transmitter can be checked as follows. 13.1.1 Checking with resistance loop Cell constant CAUTION! The cell constant of the device depends on the design type!
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13 Rectifying errors and faults Connect the resistance R to the wire Calculation of the resistance Formula for calculation of the resistance of the resistance loop: · K Resistance of the resistance loop Number of turns in the loop Cell constant desired display in S/cm Remark: 1 mS/cm = 1·10...
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13 Rectifying errors and faults Pre-calculated values The display value 0 is reached when the following conditions are met: • The sensor is dry • The sensor is free of any conducting coats • No resistance loop is mounted. Display at No.
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13 Rectifying errors and faults 13.1.2 Testing with reference fluid Put in test solution Carry out test Prepare the conductivity test solution in a sufficiently large container Connect the device electrically, see chapter 7 "Installation", page 33. Select the measurement range according to the conductivity test solution, see chapter 10.5.1 "INPUT CONDUCTIVITY (Input conductivity)", page 47 - >...
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13 Rectifying errors and faults 13.1.3 Testing with reference measuring instrument Put in test solution Carry out test Prepare the conductivity test solution in a sufficiently large container Connect the device electrically, see chapter 7 "Installation", page 33. Select the measurement range according to the conductivity test solution, see chapter 10.5.1 "INPUT CONDUCTIVITY (Input conductivity)", page 47 - >...
14 Annex 14.1 Before configuring If many parameters of the device are to be re-configured, it is advisable to make a note of all the parameters to be changed in the following table, and to process the parameters in the given sequence. NOTE! The following list shows the maximum number of modifiable parameters.
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14 Annex Parameter Selection/Range of values New setting see page Factory setting Signal type 0 to 20 mA 4 to 20 mA 20 to 0 mA 20 to 4 mA 0 to 10 V 2 to 10 V 10 to 0 V 10 to 2 V Scaling, beginning 0 to 90 % = 4 mA (e.g.)
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14 Annex Parameter Selection/Range of values New setting see page Factory setting In case of an alarm high safety value At the time of calibration accompanying frozen safety value Safety value 0.0 to 4.0 to 22.0 mA Manual operation Manual value 0.0 to 4.0 to 22.0 mA Output binary 1 or binary 2 Function...
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14 Annex Parameter Selection/Range of values New setting see page Factory setting Dosing time 00:00:00 to 00:01:00 to 18:00:00 H:M:S Locking time 00:00:00 to 00:01:00 to 18:00:00 H:M:S Device data Language German English French Spanish Polish Swedish Italian Portuguese Dutch Russian Contrast 0 to 6 to 11...
16 Index – – Alarm window In case of alarm – – At the time of calibration In case of alarm/calibration In case of hold Inflow temperature Input binary Biocide Input conductivity Input, conductivity Installation location Calculation of a temperature coefficient Inverse LCD Calibration interval Cell constant...
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16 Index Pulse duration Re-configuring Reduction Reference fluid Reference measuring instrument Reference temperature Relative cell constant Resistance loop – – Safety value Scaling – – start Setting parameters Setup interface – Signal type Solvent Sunlight Switch-off delay Switch-on delay TC-curve Temperature coefficient Temperature compensation with the TC-curve...
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JUMO GmbH & Co. KG JUMO Instrument Co. Ltd. JUMO Process Control, Inc. Street address: JUMO House 6733 Myers Road Moritz-Juchheim-Straße 1 Temple Bank, Riverway East Syracuse, NY 13057, USA 36039 Fulda, Germany Harlow, Essex, CM20 2DY, UK Delivery address:...
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