GANN HYDROMETTE UNI 1 Operating Instructions Manual
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GANN HYDROMETTE UNI 1 Operating Instructions Manual

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GANN HYDROMETTE UNI 1 + UNI 2
Operating instructions

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  • Page 1 GANN HYDROMETTE UNI 1 + UNI 2 Operating instructions...
  • Page 3 All copyrights reserved Reproduction of this manual, also in part, by print, copying or any other procedure is not permitted unless approved in writing by GANN Mess- u. Regeltechnik GmbH. This manual has been most carefully composed. The manufacturer and/or supplier assumes no liability, however, for possible misprints or errors.
  • Page 5 Technical Specifications - Hydromette UNI 1 for connection of temperature probes PT 100, (1) MS Connection Socket all active electrodes and infrared sensor IR 40 (2) LCD Readout for all measurements (3) Selector Switch »position M« for measurements using the following active electrodes: MH 34 for moisture measurements on coniferous wood in the range between 40 and 200 % m.c.

  • Page 6: Battery Check

    »position 600° « for temperature measurements up to 600 ° C using temperature probes PT 100, »position Batt« for battery check. ON/OFF (4) Measuring Key Battery Check Set selector switch (3) to position »Batt« and press measuring key (4). The reading displayed should be higher than 7.5 digits.

  • Page 7: Measuring Ranges

    Measuring ranges 40 - 200 % m.c. on coniferous wood using active Wood Moisture, position »M«: electrode MH 34 0 - 199 digits non-destructive measurement Structural Moisture, position »M«: with active electrode B 50/B60 0,3 - 8,5 % of dry weight with active electrode B 50 and conversion table 1 - 8 % of dry weight with active electrode...
  • Page 9 Technical Specifications - Hydromette UNI 2 for connection of electrodes designed for testing set build- (1) BNC Connection Socket ing materials according to the resistance method for connection of temperature probes PT 100, all active (2) MS Connection Socket electrodes and infrared sensor IR 40 for all measurements (3) LCD Readout (4) Selector Switch...
  • Page 10 »position M« RF-T 32 for air humidity measurements, RF-T 36 for air humidity measurements, IR 40 for surface temperature measurements with infrared sensor, »position 200° « for temperature measurements up to 200 ° C with elec - trodes RF-T 28, RF-T 31, RF-T 32, RF-T 36 and temperature probes PT 100, »position 600°...
  • Page 11 Power Source The meter is fitted, as standard, with a 9 V dry battery IEC 6 F 22 or IEC 6 LF 22. It is recommended to use alkali-mangan batteries. A rechargeable nickel-cadmium battery can be fitted (optional accessory). It can be recharged from any A.C. lighting supply socket by means of the charging unit supplied with this special battery.
  • Page 12 -200 - +200 °C with temperature probes PT 100 Temperature 1, position »200°«: -200 - +600 °C with temperature probes PT 100 Temperature 2, position »600°«: -20,0 - +200 ° Cwith infrared sensor IR 40. Temperature 3, position »M«: If the measured value exceeds the measuring capacity, the figure »1« appears on the left side of the display screen (3).
  • Page 13 Measuring Electrodes and Other Accessory Active electrode MH 34 (Ref.No. 3350) with integrated measuring circuit, for measurement of high moisture contents in coniferous wood, specially in case of water-borne storage and pre-sorting of freshly cut timber for kiln drying. Measuring range: 40 to 200 % m.c.
  • Page 14 Active electrode B 50 (Ref. No. 3750) with integrated measuring circuit, designed for non-destructive location of moisture concentration in construction materials and moisture distribution in walls, ceilings and floors. It works according to a special measuring procedure and generates a concentrated high frequency field with substantial penetration depth.
  • Page 15 (Ref. No. 3760) Active electrode B 60 with integrated measuring circuit, designed for non-destructive location of moisture concentration in construction materials and moisture distribution in walls, ceilings and floors. It works according to a special measuring procedure and generates a concentrated high frequency field with substantial penetration depth.
  • Page 16 (Ref. No. 3770) Active electrode MB 35 with integrated measuring circuit, designed for surface measure- ment of concrete, in particular prior to coating or gluing. 1 to 8 % m.c. of dry weight according to oven Measuring range: test, direct display, no conversion table required. Test Standard (Ref.
  • Page 17 Special electrode RF-T 28 (Ref.No. 3155) with integrated measuring circuit, for measurement of air humidity and air temperature, complete with connection cable. 7 to 98 % R.H. and -10 to +80 ° C Measuring range: about 20 seconds for 90 % of the humidity Response time: difference at an ambient temperature of 20 °...
  • Page 18 Special electrode RF-T 31 for measurement of atmospheric moisture, water activity value or equilibrium moisture in bulk materials and solid substances, e.g. brickwork and other building materials. 7 to 98 % R.H. Measuring range: -10 to +80 ° C. Sensor tube: dia.
  • Page 19 Blade Sensor RF-T 32 for measurement of atmospheric humidity, water activity value and equilibrium moisture in paper, leather, textile and tobacco stores, etc. 7 to 98 % R.H. Measuring range: -10 to +80 ° C. Flat elliptical probe abt. 10 x 4 mm. Insertion length 250 mm (Ref.
  • Page 20 Special electrode RF-T 36 (Ref. No. 3136) for measurement of air humidity and air temperature, water activity value or equilibrium moisture in rooms, warehouses or solid substances (e.g. concrete, subflooring, masonry, etc.) 5 to 98 % R.H. Measuring Range: -5 to +60 ° C Dimensions: 82 x 80 x 55 mm Sensor tube:...
  • Page 21 Infrared Surface Temperature Sensor IR 40 (Ref. No. 3150) Contactless temperature measurement from -20 to +199.9 ° C, resolution 0.1 ° C, emissivity permanently set at 9 5 %, ratio of measured area to distance 2.5:1 (Ø 45 mm at a distance of 100 mm), sensor length 185 mm x 36 x 33 mm, coiled cable 320/1200 mm.
  • Page 22 Pt 100 Temperature Probes Temperature Probe ET 10 (Ref. No. 3165) Robust stick-in temperature probe for solid and bulk materials and liquids measuring range -50 to +250 °C Temperature Probe TT 40 (Ref. No. 3180). Robust immersion and combustion gas temperature probe with long sensor tube, measuring range -50 to +350 °...
  • Page 23 Silicone Heat Conducting Paste (Ref. No. 5500) To improve heat transmission on rough surfaces or where there are contact problems. Unconditionally recommended with OT 100. Flexible Temperature Probes with Teflon insulated connection cable, for solid and bulk materials as well as liquids up to 120 ° C. FT 2 with Teflon cable 2 m long (Ref.
  • Page 24 Use of Active Electrode MH 34 for measurement of high moisture contents (above 40 % m.c.) in coniferous wood The active electrode MH 34 has been developed specially for measurement of very high moisture contents in coniferous wood (pine, fir, spruce). It is suitable particularly for pre-sorting freshly cut timber for kiln drying and for monitoring water-borne borne storage.
  • Page 25 Instructions For Non-Destructive Measurement of the Moisture Con- tent of Building Materials Using the Electrodes MB 35 and B 50/B 60 Set selector switch (3) (UNI 1) or (4) (UNI 2) to position »M«. Connect electrode to meter socket (1) (UNI 1) or (2) (UNI 2) and apply it as described hereinafter. Press measuring key (4) (UNI 1) or (5) (UNI 2) and read result displayed by LCD readout (2) (UNI 1) or (3) (UNI 2).
  • Page 26 Active Electrode B 50 und B 60 The active electrodes B 50 and B 60 are dielectric moisture sensor with integrated circuitry. It is intended specifically for determining moisture absorption and moisture distribution in building materials such as for example brickwork, concrete, screed, wood, insulating materials, etc. The basis of measurement is the dielectric constant measurement method.
  • Page 27 Special feature of the active electrode B 60 The active electrode B 60 is equipped with a selector switch to set a limit value. It allows in conjunction with the also incorporated acoustic signal generator judgement of the tested building material without direct sight on the LCD readout. Whenever the readings exceed the preset limit value, a whistle signal sounds.
  • Page 28 Checking Unless it is permanently fixed, push the ball rod into the socket on the top of the electrode and connect the cable to the measuring instrument. Hold the electrode in the air and press the measuring key of the measuring instrument. It must display a value between -5.0 and 5.0 digits. If it fails to display an admissible value, increase or, as the case may be, reduce the reading by slightly turning the potentiometer located behind an opening in the upper half of the grey plastic handle of the active electrode by means of a small screwdriver.
  • Page 29 covering is very thin, even higher). This should be taken into account when assessing the displayed values. Display Values (Digits) in Relation to the Material Bulk Density Density Corresponding Relative Air Humidity (specific wt.) of the 30         -    50                 70                     80                     90                 95                 100 building material Display in Digits...
  • Page 30 Display Values (Digits) in Percents of Weight Display (Digits) Cement weight mortar Anhydrite weight screed Concrete weight B 15, B 25, B 35 Cement weight mortar Lime weight mortar Lime-cement weight plaster 10.6 11.0 mixture Gypsum weight plaster 10.0...
  • Page 31 Readings in digits depending on the moisture in weight per cent. The displayed values are guide values. They refer to a depth of 1.5 to 3 cm in the case of a measurement on the surface and a normal drying process. Weight percentages are according to an oven test at 105 °C, for gypsum and anhydrite binders at 40 °...

  • Page 32: Technical Specifications

    Instructions for Moisture Measurement in Building Materials on the Basis of the Measurement of the Relative Air Humidity using the active electrodes RF-T 31 and RF-T 36 Set selector switch (3) (UNI 1) or (4) (UNI 2) to position »M«. Connect selected active electrode to the meter socket (1) (UNI 1) or (2) (UNI 2).
  • Page 33 Measurement of the Relative Air Humidity / Water Activity in Building Materials This method is usually used for depth measurements in old buildings (sandstone, rough stone, wet walls with efflorescence, etc.) where measurements based on the resistance measurement method give no reproducible results. For this purpose the active electrode RF-T 31 with special tube lengths of 250 and 500 mm is used.
  • Page 34 For the measurement a blind hole of 16 mm diameter should be drilled down to the required measuring depth. It is important to use a sharp drill, with a high number of impacts and low speed. If the hole should heat up strongly it is necessary to wait for temperature equalization (30 - 60 minutes) before taking the measurement.
  • Page 36 Damage to the Sensor The sensor can be rendered irreparable as a result of various mechanical or environmental influences. These include in particular: - direct contact between the sensor and the fingers, - direct contact with solid or adhesive materials or objects, - measurement in atmospheres containing solvents, oil vapours and other high proportions of armful substances.
  • Page 37 Instructions for Air Humidity Measurement using the active electrodes RF-T 28, RF-T 31, RF-T 32 and RF-T 36 Set selector switch (3) (UNI 1) or (4) (UNI 2) to position »M«. Connect electrode to the meter socket (1) (UNI 1) or (2) (UNI 2). Press measuring key (4) (UNI 1) or (5) (UNI 2) and read off result displayed (in % R.H.) by the LCD readout (2) (UNI 1) or (3) (UNI 2).
  • Page 38 Use of the active electrode RF-T 28 Hold the electrode in the air or fasten it at the desired measurement site and start the measuring process. For particularly precise measurements, especially below the usual room temperature (abt. 20 ° C) or if there are substantial temperature diff erences between the electrode or meter and their surroundings, they should be exposed to the ambient atmosphere for approx.
  • Page 39 Use of the active electrode RF-T 31 The sensor RF-T 31 can be supplied with insertion length of 250 or 500 mm and is mainly used for measuring the relative air humidity or the AW value in places difficult of access, in air ducts, in bulk materials or, in combination with a special adapter, in solid substances (e.g.
  • Page 40 Use of the active electrode RF-T 32 The sensor RF-T 32 is available with insertion lengths of 250 and 500 mm and is mainly used for measuring the relative air humidity or the AW value in places difficult of access or in stacks of paper, leather, textile, tobacco, etc.
  • Page 41 Use of the active electrode RF-T 36 The electrode RF-T 36 was developed among other things for semi-stationary (electrode remains at the measuring point - display unit is mobile when in use) air humidity and air temperature measurement in interiors, storage bays, etc. Attach the electrode at the measuring location or at the required point and start the measuring process.
  • Page 42 Note If it becomes dirty, the inserted filter cloth can only be washed in distilled water and/or blown clear with slight excess pressure from inside outwards. Therefore its use in very dusty media should be avoided. Preferably the cleaning should be carried out from outside using a soft brush.
  • Page 43 Synoptical table of dew point temperatures as dictated by the air temperature and air relative humidity Dew point temperature in °C at an air relative humi dity of temperature Saturation moisture 30 % 40 % 50 % 60 % 70 % 80 % 90 % °...
  • Page 44 Test and Calibrating Instructions for the Relative Humidity Circuitry of the Electrodes RF-T 28, 31 and 32 Using the Sensorcheck General Comments In general one has to differentiate between a test, a possibly necessary re-calibration and a special calibration for continuous measurement of more than 80 % humidity. Three test and calibrating liquids are available for the ranges of 10 to 50 %, 50 to 90 % and 80 to 98 %.
  • Page 45 Testing Different sensorcheck top pieces are required for each of the three types of electrodes. The following test sequence must be observed: Unscrew sensorcheck top from bottom. Electrode RF-T 28: Carefully pull-off the protective cap. If used, remove the dust cap first. Electrode RF-T 31: Unscrew the sinter filter cap and withdraw it carefully only along the axis of the tube extension.
  • Page 46 Pick an ampoule containing the desired type of test liquid. Hold it vertically and tap it lightly to return all liquid into the lower part of the ampoule. Hold the ampoule tightly and break its neck off at the white marking. Pour all of the liquid in the ampoule onto the fleece in the lower part of the sensorcheck.
  • Page 47 Recalibration Re-calibration of the sensors used with the electrodes RF-T is hardly ever necessary. Existing deviations of measurement are almost always caused by improper storage of the electrode in surroundings which are too dry or too moist. Prior to every recalibration of the electrode, it should be exposed to a conditioning process.

  • Page 48: Special Calibration

    Special Calibration Special calibration may become necessary if continuous measurements of high humidity (more than 80 % R.H.) or of very low humidity (less than 35 % R.H.) are to be conducted. Test liquids SCF 90 and SCF 30 are available for this purpose. To eliminate measuring or calibrating mistakes caused by the sorption effect, it is necessary to allow an exposure time of 6 to 7 hours for the electrode RF-T 32.
  • Page 49 Operating Instructions for Temperature Measurement Measurement using active electrodes RF-T 28, RF-T 31 and RF-T 32 Set selector switch (3) (UNI 1) or (4) (UNI 2) to position »200 ° C«. Connect electrode to meter socket (1) (UNI 1) or (2) (UNI 2). Press measuring key (4) (UNI 1) or (5) (UNI 2) and read off result in °...
  • Page 50 General Information About Temperature Measurement A temperature balance must be achieved between the measuring sensor and the object to be measured, for correct readings to be made. This is easy to achieve when measuring liquids in large quantities or large objects with a high heat content. One must ensure that the sensor tube and head are not affected by another temperature such as ambient air temperature.
  • Page 51 Use of the active electrodes RF-T 28, RF-T 31 and RF-T 32 Hold the probe in the air at the measuring location and start the measurement by pressing the measuring key (4) (UNI 1) or (5) (UNI 2). The electrodes RF-T 28, RF-T 31 and RF-T 32 are only suitable for measuring the air temperature (besides of the air humidity) not for temperature measurements on solid material and liquids.
  • Page 52 Use of the Surface Temperature Probe OT 100 The OT 100 is a special probe with low mass for measuring surface temperatures. Coat the sensor head with heat conducting paste and press it against the object to be measured. The sensor head must lie totally flat and in good contact.
  • Page 53 Silicone Heat Conducting Paste The heat conducting paste is supplied in packages containing 2 tubes of 30 g each. Its purpose is to improve the transfer of heat between the sensor and the object being measured. Temperature measurements with the probes OT 100 and OTW 90 on rough surfaces should generally be carried out in conjunction with heat conducting paste.
  • Page 54 Use of the Stick-in Temperature Probe ET 50 The stick-in probe ET 50 is a special sensor for measuring temperatures in liquids and soft materials, and for measuring core temperatures in pre-drilled holes. Dip the sensor into the liquid or insert it into the soft material to be measured, in both cases at least as far as the first swelling (or approx.
  • Page 55 Use of the Immersion and Combustion Gas Temperature Probe TT 30 The immersion probe TT 30 is a special sensor for measuring temperatures in liquids and core temperatures in pre-drilled holes as well as in combustion and waste gas of burners. The sensor tube has a length of 230 mm.
  • Page 56 Use of the Flexible Temperature Probes of FT Series For correct temperature measurement temperature equalization must be created between the measurement sensor and the object being measured. This is easily possible in the case of measurements on liquids in larger quantities or on large objects with high heat retention. Here care must be taken to ensure that the sensor (length of the shrinkable sleeve) is not influenced at certain points by another temperature (surrounding air temperature).
  • Page 57 Handling of Infra-Red Surface Temperature Probe IR 40 Technical Specifications -20 ° C to +199.9 ° C. Resolution: 0.1 ° C. Measuring range: 95 %, permanently set. Emission factor: Length 185 mm x 36 mm x 33 mm. Dimensions: Coiled cable 320/1200 mm long. Admissible ambient conditions 5 °...
  • Page 58 General Information Concerning Infra-Red Temperature Measurement Technique All bodies with a temperature above the »absolute zero« (= 0 °K or -273 ° C) emit infra-red radiation, also known as thermal radiation. The intensity of this thermal radiation serves as an indication of the surface temperature, having regard to the degree of emission.
  • Page 59 Immediately after pressing the measuring key, the reading is displayed in ° C. Depending on the temperature »jump«, the measurement value is instantly displayed or within a few seconds. Fluctuations in the last display digit (1/10 ° C) in the range ± 0.2 ° C are completely normal. Even the second digit (1 °...

  • Page 60: Degree Of Emission

    ● measure objects directly exposed to strong sunlight (shade the objects), ● measure objects in the immediate vicinity of strongly heat-emitting or coldemitting equipment (in terrupt heat/cold radiation), ● expose the high-quality measurement device to the influence of strong heat or cold sources (transport in the baggage compartment), ●...
  • Page 61 A correction between the temperature measurement value and the emission factor requires a knowledge of the ambient temperature compensation between the measurement sensor and the ambient temperature. The correction is calculated according to the following equation: (T display - T ambient) x 100 ________________________________ + T ambient = T measurement object.
  • Page 62 Size of the measurement spot The measurement spot diameter depends on the distance from the sensor and has a size of 5 mm immediately in front of the measurement sensor opening. The measurement spot diameter increases proportionally in a ration of approx. 2.5 : 1 the greater the distance between the measurement sensor and object.
  • Page 63 Operating Instructions for Moisture Measurement of Building Materials According to the Resistance Method - only possible with Hydromette UNI 2 - Set selector switch (4) to position »B«. Connect selected measuring electrode to the meter socket (1) by means of the measuring cable MK 8 and drive-in or stick-in electrode into the material to be measured.
  • Page 64 Drive-in Electrode M 20 (Ref. No. 3300) for measurements on set construction materials (plaster, mortar, etc.), with measuring pins - 16 mm long (Ref. No. 4610), penetration depth 10 mm - 23 mm long (Ref. No. 4620), penetration depth 17 mm. Surface Measuring Caps M 20-OF 15 (Ref.
  • Page 65 Brush Electrodes M 25 (Ref. No. 3740) made of stainless steel, for moisture measurements of hard and soft building materials without contact paste, measuring depth up to 100 mm. Stick-in Electrodes M 6 (Ref. No. 3700) for testing hard building materials, using contact paste and pre-drilled holes, with pins - 23 mm long (Ref.
  • Page 66 Flat Electrodes M6-Bi 200 / 300 for measurements in insulating material of cement flooring through the edge joint (with insulated shank), only for use in conjunction with the handles of the electrodes M 6. - size 10 x 0.8 x 200 mm (Ref. No. 3702) - size 10 x 0.8 x 300 mm (Ref.
  • Page 67 Deep Electrodes M 21-100 / 250 for deep measurements in set building materials, in conjunction with contact paste and pre-drilled holes - 100 mm long (Ref. No. 3200) - 250 mm long (Ref. No. 3250). Contact Paste (Ref. No. 5400) to ensure good contact between electrode pins and tested building materials.
  • Page 68 Carrying Case (Ref. No. 5081) for storing and transport of the measuring instrument and the standard and optional accessory Measuring Cable MK 8 (Ref. No. 6210) for connection of the electrodes M 6, M 18, M 20, M 20-HW M 20-Bi and M 21 with Charging Unit (Ref.

  • Page 69: Test Devices

    Test Devices Test Standard (Ref. No. 6070) for checking the wood moisture measuring section of building materials. Test Standard (Ref. No. 6073) for checking the active electrode MB 35.
  • Page 70 Testing Set Building Materials For testing soft building materials, the drive-in electrode M 20 should be used, whereas hard building materials such as concrete and cement flooring are to be measured with the stick-in electrodes M 6 or M 21/100, using contact paste. For penetration measurements, up to a depth of 250 mm, on concrete or masonry, the special electrodes M 21/250 are available.
  • Page 71 Surface Measurement Caps M 20-OF 15 For surface measurements on smooth materials, the two hexagonal union nuts have to be unscrewed and replaced by the surface measurement caps. To perform the measurement, the two contact surfaces should be firmly pressed onto the material being measured. The measurement depth is about 3 mm.
  • Page 72 Brush Electrodes M 25 The two brush electrodes, made of stainless steel, are specially designed for depth measurements on hard and soft building materials without using additionally contact paste. To do so, drill two blind holes approx. 5 - 8 cm apart and with a diameter of 6 mm. To ensure sufficient contact, the blind holes must be drilled to a depth of at least 2 cm.
  • Page 73 Warning The readings may under some circumstances be distorted if there is too much contact material in the electrode tube or if an electrode tube contaminated with contact paste is repeatedly removed and inserted. Contact Paste The contact paste is supplied in quantities of approx. 450 g in a plastic box sealed with a screw cap.
  • Page 74 Flat Electrode M 6-Bi 200/300 These two electrodes are exclusively designed for measurement of insulating material through the edge joint of the cement flooring. Spaced about 5 to 10 cm, they have to be pushed forward through the edge joint along the cement flooring down to the insulating layer. Particular care should be taken to avoid that the shrinking hose of the pins is not damaged because otherwise a moist cement flooring can cause measuring errors.
  • Page 75 Test Standard for Structural Moisture Measuring Section The optionally available test standard (Ref. No.6071) permits the user to check proper function of the structural moisture measuring section of the meter as well as of the connecting cable MK 8 and of the measuring electrodes M 6 and M 20 at any time.
  • Page 76 The long term ambient conditions must also be taken into account when assessing wall surfaces. Lime stuff in an old vaulted cellar may have a moisture content of 2.6 % and still be treated. But a moisture content above only 1 % is considered too high for gypsum plaster in a centrally heated room.
  • Page 77 Table of Comparison Air Humidity - Structural Moisture...
  • Page 78 Equilibrium moisture values The moisture ranges shown in the graphs have the following meaning: Ambient climate % RH Condition of material equalizing range moist equilibrium moisture attained White section: equilibrating phase Caution: Floor covering or glues im- White-black section: pervious to moisture should not yet been processed moist Performing any work should be...
  • Page 86 Building or Insulating Materials Not Assignable to One of the Preceding Conversion Graphs Some building materials, e.g. brick, sand lime brick, etc., cannot be measured with the usual accuracy due to their varying mineral additives or burning times. This does not however mean that comparative measurements on the same material and on the same site would be of no value.

  • Page 87: Final Remarks

    Final Remarks The information and tables as well as the general terms and definitions contained in the instructions for use were taken from the specialist literature. The manufacturer or supplier of the measurement equipment therefore cannot be held responsible for the correctness of this information.

  • Page 88: Warranty

    Warranty GANN warrants for six months from date of purchase or one year from date of delivery from his factory whichever period elapses first, to correct by repair or replacement of defective parts free of charge any product defect due to faulty material or poor workmanship. Replacement or repair of any part does not constitute a new warranty period.

  • Page 89: Ec Declaration Of Conformity

    89/336/EEC in version 93/31/EEC We hereby declare that the handheld moisture meter GANN HYDROMETTE UNI 1 and UNI 2 correspond to the aforementioned directive both with respect to its conception and type of construction and the design as marketed by us.

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Hydromette uni 23000143030001550

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