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Instruction Manual COMPACT NO METER B - 74X CODE:GZ0000297062D...
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Quick Operation Guide This quick operation guide introduces the basic operations. Refer to the respective chapters for further information. Turn ON ① Press the ON/OFF button over 2 seconds to turn ON the meter. Perform calibration at least once a day Calibration ② ...
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③ Measurement ① Pour some drops of sample. ② Close the light shield cover. ③ When lights up, the measurement is completed. To lock the measured value, press the MEAS button. ④ After Use Clean the sensor with water, and then turn OFF the power.
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Preface This manual describes the operation of the COMPACT NO METER, B-74X. Be sure to read this manual before using the product to ensure proper and safe operation of the instrument. Also safely store the manual so it is readily available whenever necessary. Product specifications and appearance, as well as the contents of this manual are subject to change without notice.
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Regulations EU Regulations Conformable standards This equipment conforms to the following standards: EMC: EN61326-1 Class B, Portable test and measurement equipment RoHS: EN50581 9. Monitoring and control instruments Warning: This product is not intended for use in industrial environments.
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Authorised Representative in EU HORIBA UK Limited 2 Dalston Gardens, Stanmore, Middx HA7 1BQ, UK FCC Rules Any changes or modifications not expressly approved by the party responsible for compliance shall void the user's authority to operate the equipment.
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Contents Introduction..................1 Items in package ................. 1 Consumable parts sold separately ..........2 Part Names and Functions ..............3 Handling Precautions................5 Basic Handling..................7 Inserting/removing batteries ............7 Attaching/detaching the sensor ........... 8 Power ON/OFF ................9 Storage ..................9 Calibration ..................
Introduction The COMPACT NO METER B-74X incorporates HORIBA original flat sensor and enables accurate measurement of nitrate ion (NO ) concentra- tions from a single drop of a sample. Items in package B-741 B-742 B-743 Meter model for crops for soil for geneal-use Sensor S040...
B-741 B-742 B-743 Meter model for crops for soil for geneal-use B-741 Quick-start manual B-742 B-743 Consumable parts sold separately Part No. Name Type Application 3200459870 Sensor S040、NO B-741、B-742、B-743 3200053535 Y044, NO 30 ppm B-742 (low concentration) 3200053536 Y045, NO 150 ppm B-743 (low concentration) Standard...
Part Names and Functions Name Description Place a sample on this sensor. This sensor consists of a Flat sensor liquid junction (A) and response membrane (B). Both A and B must be covered with the sample. Shields the sensor from light, which affects the sensor. Close the light shield cover before starting measurement.
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Name Description Strap eyelet A strap can be attached here. Blinks until the measured value is stabilized, and lights MEAS icon steadily when the measured value is settled, while the reading locking function is active. Blinks during calibration, and lights steadily when calibration 10 CAL icon is finished.
Handling Precautions Meter and sensor The sensor is a consumable part. If it becomes damaged or its performance deteriorates, replace it with a new one (the sensor cannot be repaired). Do not swing the meter and sensor by holding a strap. ...
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Store the response membrane of the flat sensor in dry conditions. If the response membrane gets wet for a long time, it may become deformed. Do not measure samples such as the following, since they may damage the sensor or shorten its life: Organic solvents, oils, adhesives, cement, alcohols, concentrated acid (0 pH to 2 pH), concentrated alkaline (12 pH to 14 pH) or surfactants.
Basic Handling Inserting/removing batteries Note Turn OFF the meter before inserting/removing batteries. Always replace both batteries at once. Do not use old and new batteries together. Inserting the batteries Slide both batteries into battery case as shown. Be sure to use two CR2032 Battery batteries, and put them with the plus...
Attaching/detaching the sensor Note Turn OFF the meter before attaching/detaching the sensor. If the meter is turned ON with the sensor detached, the battery alarm may light up. In this case, turn OFF the meter and attach the sensor, and then turn ON the meter again.
Power ON/OFF Power ON Press and hold the ON/OFF switch for over 2 seconds. The power is turned ON, and the meter model number is displayed on the LCD. Power OFF Press and hold the ON/OFF switch for over 2 seconds.
Calibration About calibration Calibration points The following 3-type calibrations are available. One-point calibration in high concentration: for high concentration measurement One-point calibration in low concentration: for low concentration measurement Two-point calibration: for high accuracy measurement “One-point calibration in high concentration” is set by default. Refer to the instructions on page 21 for switching the calibration points.
One-point calibration in high concentration Set “One-point calibration in high concentration” (refer to page 21). Open the light shield cover and put some drops Light shield of the high-concentration standard solution on cover the flat sensor to cover the entire flat sensor. Washing the sensor with the standard solution beforehand may provide more accurate calibration.
Two-point calibration Set “Two-point calibration” (refer to page 21). Open the light shield cover and put some drops Light shield of the low-concentration standard solution on cover the flat sensor to cover the entire flat sensor. Washing the sensor with the standard solution beforehand may provide more accurate calibration.
Measurement Sample setting The following 4-type sampling setting methods are available. Drop: for a small-amount sample Immersion: for a large-amount sample Scooping: for sampling a part of a sample Sampling sheet: for a sample containing tiny particles Note Although this product is waterproof, avoid immersing it completely.
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Immersion Open the sliding cap on the light shield cover. Immerse the sensor into the sample and stir gently 2 or 3 times. Sliding cap Scooping Open the sliding cap on the light shield cover. Immerse the sensor into the sample and stir gently 2 or 3 times, and then scoop up some of the sample with the sensor.
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Sampling sheet If tiny particles are contained in a sample, such as an extract from soil, the particles influence measurement results. Use the sampling sheet holder cover (part No. 3200459736) and sampling sheet B (part No. 3200053858) sold separately to counteract the influence. Replace the light shield cover with the sampling sheet holder cover.
Measurement operations Without using the reading locking function Confirm that the meter is in the measurement mode, and set a sample on the sensor. Read the displayed value when appears. With using the reading locking function Confirm that the meter is in the measurement mode, and set a sample on the sensor.
Special Setting Mode The special setting mode enables the meter setting and special operations. To enter the special setting mode, press and hold the MEAS switch for over 3 seconds in the measurement mode. All the LCD items appear, then the meter enters the special setting mode.
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MEAS switch "7.6 Sensor voltage display mode" (page 24) Displays the voltage output from the sensor. CAL switch* MEAS switch "7.7 Low calibration value setting" (page 25) Used to change calibration value. CAL switch* MEAS "7.8 Initialization mode" (page 27) switch All settings and calibration data are reset to the factory default values.
Measurement unit setting Used to select measurement unit. Press and hold the MEAS switch for over 3 seconds in the measurement mode to enter the special setting mode. All items appear on the LCD, and then the display changes as shown above.
Temperature display mode Displays the ambient temperature measured with the internal temperature sensor. The measurement accuracy is unwarranted. Use the value only as a guide. Press and hold the MEAS switch for over 3 seconds in the measurement mode to enter the special setting mode.
Calibration point setting Used to select the calibration points. Press and hold the MEAS switch for over 3 seconds in the measurement mode to enter the special setting mode. All items appear on the LCD, and then the dis- play changes as shown right. Press the CAL switch until appears.
Multiplying compensation setting Used to select the coefficient (0.01 to 9.90) for multiplying compensation. The values after compensation are displayed as results. The initial setting is 1.00. If the sample is diluted/condensed, change this setting as necessary. Note The multiplying compensation function does not change the specified measurement range or product performance.
Adding compensation setting Used to select the coefficient (1000 to 1000) for adding compensation. The values after compensation are displayed as results. The initial setting is 0. If measurement is affected by a known factor, change this setting as neces- sary.
Sensor voltage display mode Displays the voltage output from the sensor. Use this function to evaluate the sensor performance or to create your own calibration line or curve. Press and hold the MEAS switch for over 3 seconds in the measurement mode to enter the special setting mode.
Low calibration value setting Used to change calibration value for low concentration. The setting range and the initial setting depend on the meter model, as shown the table below. If you prepare a calibration solution originally, change this setting as neces- sary.
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<Example> For B-743 (Setting range:62 ppm to 1900ppm) 150 ppm 62 ppm CAL switch Press the CAL switch Press the CAL switch for 0.5 seconds. for 0.5 seconds. 160 ppm 1900 ppm CAL switch...
Initialization mode All settings and all calibration data are reset to the factory default values. Press and hold the MEAS switch for over 3 seconds in the measurement mode to enter the special setting mode. All items appear on the LCD, and then the dis- play changes as shown right.
Appendix Frequently asked questions Question Answer It depends on measurement samples and conditions. How long is the It should be approx. 1500 measurements for typical samples. sensor's service Note that sensor deterioration and failure are not included in life? the warranty. How can I check the Perform two-point calibration.
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Question Answer This product cannot measure a sample with a temperature Can I measure high- outside the meter's operating temperature range (5C to 40C). or low-temperature The difference between the sample temperature and ambient samples? temperature increases the measurement error. Perform mea- surement after the sample reaches the ambient temperature.
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Question Answer How can I return all the settings of the special setting mode Perform initialization (refer to page 27). to the default settings?
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31, Miyanonishi-cho, Kisshoin Minami-ku, Kyoto 601-8306, Japan http://www.horiba-adt.jp For any questions regarding this product, please contact your local agency, or inquire from the following website. http://global.horiba.com/contact_e/index.htm...
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