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Smart Wireless pH Sensor
Data Harvest Group Ltd.1 Eden Court, Leighton Buzzard, Beds, LU7 4FY
Tel: 01525 373666, Fax: 01525 851638
e-mail: sales@data-harvest.co.uk or support@data-harvest.co.uk
www.data-harvest.co.uk
Data Harvest. Freely photocopiable for use within the purchasers establishment
DS156
pH Sensor Pack (Bluetooth)
(Product No. 1110PK)
pH Glass Electrode (BNC)
(Product No. 2253)
pH Adaptor (Bluetooth)
(Product No. 1110)
No 2
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Table of Contents
Related Manuals for Data Harvest Smart Wireless 1110PK
Summary of Contents for Data Harvest Smart Wireless 1110PK
- Page 1 Adaptor (Bluetooth) (Product No. 1110) pH Glass Electrode (BNC) (Product No. 2253) Data Harvest Group Ltd.1 Eden Court, Leighton Buzzard, Beds, LU7 4FY Tel: 01525 373666, Fax: 01525 851638 e-mail: sales@data-harvest.co.uk or support@data-harvest.co.uk www.data-harvest.co.uk Data Harvest. Freely photocopiable for use within the purchasers establishment...
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Page 2: Table Of Contents
pH Adaptor & Electrode Contents Introduction ............................2 The Smart Wireless pH adaptor ......................3 The pH electrode (BNC) ........................3 Connecting the Smart Wireless pH sensor to a computer ..............4 Electrode preparation .......................... 5 Measurement procedure ........................5 Electrode storage .......................... -
Page 3: The Smart Wireless Ph Adaptor
pH Adaptor & Electrode The Smart Wireless pH adaptor Status light On/Off switch BNC connector USB input (female) Unique ID number Charge the pH adaptor fully before first use Use the USB lead supplied to connect the pH adaptor either direct to a USB port on your computer* or to a USB mains charger that outputs 5 V at 500 mA or more. -
Page 4: Connecting The Smart Wireless Ph Sensor To A Computer
pH Adaptor & Electrode Connecting the Smart Wireless pH sensor to a computer Bluetooth users: Do NOT pair devices (if paired the sensor will not be available to the EasySense2 software). Computers or devices will need to support Bluetooth Low Energy (BLE), for further information refer to the instructions provided for the EasySense2 software. -
Page 5: Electrode Preparation
pH Adaptor & Electrode Troubleshooting If the sensor loses Bluetooth connection and will not reconnect try 1. Closing and reopening the EasySense2 software. 2. Close the EasySense2 software. Switch the sensor Off and then On again (To switch off: Press and hold down the On/Off switch for about 2 seconds until the white light is lit solidly then release. -
Page 6: Practical Information
pH Adaptor & Electrode Practical information This general purpose electrode is non-refillable Keep the pH sensitive membrane wet at all times. For the ion exchange process to occur properly, the glass needs to be hydrated. Check and maintain the level of storage solution. ... -
Page 7: To Set The Range
pH Adaptor & Electrode Coatings on the glass or junction surfaces e.g. proteins, will prevent proper operation (see maintenance on page 9). Avoid frequent or prolonged periods of use in these solutions. To set the range The stored calibration for the sensor is the pH range, which is suitable for most experiments. It is also possible for the user to adjust the calibration constants of an electrode –... - Page 8 pH Adaptor & Electrode of a calibration curve is required to convert the mV reading to ppm or Log ion concentration reading. Refer to the manufacturer’s guide for the ion-selective electrodes (ISE) and oxidation reduction probes (ORP) for details of dilutions for calibration and mV slope values. User calibration If required the calibration constants of a pH electrode can be adjusted.
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Page 9: Specifications
pH Adaptor & Electrode After the next count down rinse the electrode in distilled water, wipe off excess and suspend in the value 3 buffer, stir and select Next. After the next count a message will say ‘Your sensor has been calibrated ……’ Select Finish. Note: Mark the pH electrode and adaptor combination so they are used as a pair. -
Page 10: Updating The Firmware
When this happens, contact Data Harvest. Updating the Firmware Occasionally Data Harvest may release updated firmware which will contain improvements or new features. Updates will be made available from the product specific page on the Data Harvest website. -
Page 11: Theory Of Ph Measurement
pH Adaptor & Electrode Oil, Grease: - Carefully wash the electrode under warm tap water using a non-filming dish washing detergent or stain removing pre wash pre-treatment. Do not use automatic or electric dish washing detergents. On overnight soak may be needed if build-up is heavy. Rinse thoroughly with fresh tap water followed by a three rinses of distilled water. -
Page 12: Trouble Shooting
pH Adaptor & Electrode T = absolute temperature in ˚K (˚C + 273) F = Faraday constant (96,485.33 C mol n = valence factor (n = 1 in the case of hydrogen) At 25˚C the theoretical slope is 2.303 x 8.314 x (25 + 273.15) = 5,708.995 = 59.1695 mV/ per pH unit. 96,485.33 96,485.33 Temperature can affect the pH value in three ways:... -
Page 13: Neutralisation Of A Strong Base (Sodium Hydroxide) By A Strong Acid (Hydrochloric Acid)
pH Adaptor & Electrode Neutralisation of a strong base (sodium hydroxide) by a strong acid (hydrochloric acid) This experiment uses the pH sensor to monitor the pH as 0.1 mol dm hydrochloric acid is added to a beaker containing 0.1 mol dm sodium hydroxide. -
Page 14: How To Create A Mv To Ph Calibration Graph
pH Adaptor & Electrode Close Type 0 into the ‘enter value’ box and close. Note: Enter the TOTAL volume of acid added so far. 10. Turn the tap on the burette to add a measured amount e.g. 2 cm . Let the solutions mix and take a sample. - Page 15 pH Adaptor & Electrode Connect the pH sensor to the computer, open the EasySense2 software and check the range of the pH sensor is set to ±1000 mV. In Setup check the mode is Continuous, select a Numeric chart and Start logging. ...
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Page 16: Buffers
Damage to the pH sensitive glass bulb is not covered by warranty. Note: Data Harvest products are designed for educational use and are not intended for use in industrial, medical or commercial applications. WEEE (Waste Electrical and Electronic Equipment) Legislation Data Harvest Group Ltd is fully compliant with WEEE legislation and is pleased to provide a disposal service for any of our products when their life expires.