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HOBO MX pH and Temperature Logger (MX2501) Manual 

Patent #: 8,860,569 

22511-B 

Federal Communication Commission Interference Statement

 

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide 
reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and 
used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a 
particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user 
is encouraged to try to correct the interference by one of the following measures: 

Reorient or relocate the receiving antenna 

Increase the separation between the equipment and receiver

Connect the equipment into an outlet on a circuit different from that to which the receiver is connected

Consult the dealer or an experienced radio/TV technician for help 

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device 
must accept any interference received, including interference that may cause undesired operation. 

FCC Caution: 

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. 

Industry Canada Statements

 

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and 
(2) this device must accept any interference, including interference that may cause undesired operation of the device. 

Avis de conformité pour l’Industrie Canada 

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) 
l'appareil ne doit pas produire de brouillage, et (2) l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le 
fonctionnement. 

To comply with FCC and Industry Canada RF radiation exposure limits for general population, the logger must be installed to provide a separation distance of at least 20cm from 
all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. 

NCC Statement 

經型式認證合格之低功率射頻電機,非經許可,公司、商號或使用者均不得擅自變更頻率、加大功率或變更原設計之特性及功能。 

低功率射頻電機之使用不得影響飛航安全及干擾合法通信;經發現有干擾現象時,應立即停用,並改善至無干擾時方得繼續使用。前項合法通信,指依電信法規定作
業之無線電通信。低功率射頻電機須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。 

Translation: 

Article 12 

Without permission granted by the NCC, any company, enterprise, or user is not allowed to change frequency, enhance transmitting power or alter original characteristic as well 
as performance to an approved low power radio-frequency device. 

Article 14 

The low power radio-frequency devices shall not influence aircraft security and interfere with legal communications. If found, the user shall cease operating immediately until no 
interference is achieved. The said legal communications means radio communications is operated in compliance with the Telecommunications Act. The low power radio-
frequency devices must be susceptible with the interference from legal communications or ISM radio wave radiated devices. 

Summary of Contents for MX series

Page 1: ...ately 30 5 m 100 ft line of sight in air Wireless Data Standard Bluetooth Low Energy Bluetooth Smart Logging Rate 1 second to 18 hours Logging Modes Fixed interval normal statistics or burst Memory Modes Wrap when full or stop when full Start Modes Immediate push button date time or next interval Stop Modes When memory is full push button date time or after a set logging period Time Accuracy 1 min...

Page 2: ...cap can detect the presence of water This allows you to configure the logger in a power saving mode in which Bluetooth advertising is active only when the logger is removed from water See Configuring the Logger for details Note The logger will check for the presence of water every 15 seconds when the Bluetooth Off Water Detect power saving mode is selected pH Electrode This is the electrode that i...

Page 3: ...ut from the logger without twisting it 2 If this is the first time you re installing a pH electrode skip to step 3 If a pH electrode is currently installed gently remove it from the sensor end cap Use a foam swab dipped in water to clean the internal O rings Use the foam swab to spread a small dot of silicone based grease along both the O rings inside the sensor end cap Do not use a cotton swab as...

Page 4: ... Configure Select logger settings and load them onto the logger to start logging See Configuring the Logger Readout Download logger data See Reading Out the Logger pH Calibration Calibrate the logger following the instructions in HOBOmobile The logger should be calibrated after replacing or cleaning the electrode See Calibrating the Logger Full Status Details Check the battery level and view the c...

Page 5: ... as prompted making sure the sensor end cap temperature sensor and closure cap are submerged in the solution Follow the instructions on the screen Once the pH reading is stable tap Confirm Buffer 10 If you selected three point calibration repeat steps 8 9 11 Tap Save Calibration 12 Rinse the pH sensor with deionized or distilled water again If you will not be deploying the logger immediately attac...

Page 6: ...e Setting up Alarms for more details 7 Tap Start Logging and select when logging will begin Now Logging will begin immediately after tapping Start in the Configure screen On Next Logging Interval Logging will begin at the next even interval as determined by the selected logging interval On Button Push Logging will begin once you press the switch on the logger for 3 seconds On Date Time Logging wil...

Page 7: ...the High Alarm if you want an alarm to trip when the sensor reading rises above the high alarm value Drag the slider to the reading that will trip the alarm or tap the value field and type a specific reading In the example an alarm will trip when the temperature rises above 85 F 5 Enable the Low Alarm if you want an alarm to trip when the sensor reading falls below the low alarm value Drag the sli...

Page 8: ...ensor Limits 5 Enable High Limit if you want burst logging to occur when the sensor reading rises above a specific reading Drag the slider to the reading that will trigger burst logging or tap the value field and type a specific reading In this example the logger will switch to burst logging when the temperature rises above 85 F 6 Enable Low Limit if you want burst logging to occur when the sensor...

Page 9: ...n select Fixed Interval Logging 4 Select Normal to record the current reading for each enabled sensor at the logging interval shown at the top of the screen Do not select this if you only want to log statistics 5 Select the statistics you want the logger to record at each logging interval Maximum Minimum Average and Standard Deviation average is automatically enabled when selecting Standard Deviat...

Page 10: ...ed because the reading was outside the alarm limits or back within range Note Although the reading may have returned to a normal range during logging an alarm cleared event will not be logged if the logger was set up to maintain alarms until reconfigured New Interval The logger has switched to logging at the burst logging rate or back to the normal rate Water Detect The logger has been placed in w...

Page 11: ...s on the sensor end cap shown above Using your finger spread a small dot of grease along both outer O rings Battery Information The logger requires one user replaceable AA 1 5 V alkaline or lithium battery With a logging interval of 1 minute and at 25 C 77 F battery life is 1 year with Bluetooth Always On selected 2 years with Bluetooth Off Water Detect selected and 3 years with Bluetooth Always O...

Page 12: ...nto position 9 Screw the closure cap back on the logger WARNING Do not cut open incinerate heat above 85 C 185 F or recharge the lithium battery The battery may explode if the logger is exposed to extreme heat or conditions that could damage or destroy the battery case Do not dispose of the logger or battery in fire Do not expose the contents of the battery to water Dispose of the battery accordin...

Page 13: ...dustry Canada license exempt RSS standard s Operation is subject to the following two conditions 1 this device may not cause interference and 2 this device must accept any interference including interference that may cause undesired operation of the device Avis de conformité pour l Industrie Canada Le présent appareil est conforme aux CNR d Industrie Canada applicables aux appareils radio exempts ...

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