Data Harvest Smart Wireless 1110PK Manual de usuario

establishment

1110PK - Wireless pH Sensor Pack

Revision:

3.0

| DS156

1110PK - Wireless pH Sensor Pack

| Revision: 3.0 | DS156

Table of contents

Introduction ...................................................................................................... 3

Pack Contents .................................................................................................... 4

Operational Overview ......................................................................................... 5

The pH electrode (BNC) ...................................................................................... 7

Connectivity ...................................................................................................... 8

Charging the Sensor .........................................................................................

Firmware Updates ............................................................................................

Usage Information ............................................................................................

Practical Investigations .....................................................................................

Sensor Specifications ........................................................................................

Limited Warranty .............................................................................................

Compliance .....................................................................................................

Troubleshooting ...............................................................................................

Notices ............................................................................................................

Contact Information ..........................................................................................

PDF Translations ..............................................................................................

1110PK - Wireless pH Sensor Pack

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Introduction

Thank you for purchasing the Smart Wireless pH Sensor Pack. We pride ourselves on producing high

quality products that meets with the demands of the busy classroom environment. If you have any

problems using this sensor, please read this documentation in full before contacting the Data Harvest

support team.

Overview

The Smart Wireless pH Sensor is both USB and Bluetooth compatible, and can wirelessly connect to

mobile devices such as tablets and mobile phones, as well as desktop or laptop computers, giving

students the ability to run experiments independently without being tethered to a traditional data logger.

See the EasySense2 App user manual system requirements for further details.

The Smart Wireless pH Sensor consists of a combination of the Smart Wireless pH Adaptor (Product

No. 1110) and a general-purpose pH Electrode (Product No. 2253).

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Pack Contents

This product is supplied with the following items:

1 x Wireless pH Sensor Pack

which includes:

1 x Wireless pH Adaptor

o1 x pH Electrode

1x Mini USB Lead

Additional Accessories

To get the most from your Smart Wireless pH Sensor Pack, the following items should be considered:

Wireless Temperature Sensor

1110PK - Wireless pH Sensor Pack

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Operational Overview

The diagram below shows the specific parts of the sensor. Read further to explore the functionality of

each part of the sensor.

1.Sensor End Cap

2.Status Indicator

3.On/Off Switch

4.USB Port

5.Unique ID Number

Sensor End Cap (1)

Most Smart Wireless Sensors feature an end cap that is specific to the requirements of the device's

internal sensor. The sensor's end cap is the direct interface between the device’s internal sensor and

your experiment.

The Status Indicators (2)

The sensor features a single status indicator that changes colour and flashes. See the table below for

further information.

Status Light

Indicates

No light

Sensor is Off. Short press the On/Off switch

Blue flashing Sensor On and Bluetooth advertising

White flashing Charging via USB mains charger or USB port

Green flashing Communication with the EasySense2 app (via USB or

Bluetooth) has been established

Orange flashing Recording data

Red flashing Battery is low

On/Off Switch (3)

The sensor's on/off switch allows you to turn the sensor on, off or perform a hard reset.

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To switch the sensor off

Press and hold down the On/Off switch until the white light shows, then release.

If not communicating with the EasySense2 app, the sensor will turn off after a period of one hour of

inactivity.

Hard resetting the sensor

If necessary, attach the sensor to power.

Press and hold down the On/Off button for at least 8 seconds until the status LED gives a flash of

blue light, then release.

If the sensor fails to respond, contact Product Support at Data Harvest. Please provide details of: 

oThe computer platform it is being used with and the EasySense2 app’s version number.

oA description of the problem being encountered.

USB Port (4)

Use to connect to a computer or a charging unit.

For specific USB or Bluetooth connectivity instructions, please see the 'Connectivity' section of this

documentation.

For instructions on charging your device, see the section on 'Charging the Sensor'.

Unique ID Number (5)

All Smart Wireless Sensors are labelled with a unique ID number. This number is used in the

EasySense2 app, so that you can identify each sensor when making a connection wirelessly.

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The pH electrode (BNC)

This is a general-purpose, plastic bodied, single junction, gel-filled glass electrode, which is non-

refillable.

IMPORTANT:

To maintain the level of the storage solution, the pH electrode’s glass membrane must

be kept wet.

Electrode Storage

Maintain the level of pH electrode storage solution, the pH sensitive membrane must be kept wet.

Store the electrode in equal volumes of pH 4.0 buffer and 3.5 - 4 mol dm-3 Potassium Chloride (KCl)

solutions (1:1 v/v).

Never store the electrode in deionised or distilled water - this will cause migration of the electrode’s fill

solution.

Recipe

: Add 29 g of KCl to 100 cm3 of distilled water. Add 100 cm3 of a pH 4 buffer solution.

Please remember that to maintain the level of pH electrode storage solution, the glass

membrane must be kept wet.

Electrode Maintenance

The glass bulb can become coated with any compound that has an affinity for glass. After any cleaning

procedure, soak the electrode in its storage solution for at least 30 minutes before use.

General cleaning procedure

: - Soak the electrode in 0.1 mol dm-3 Hydrochloric acid (HCl) for

between 10 to 30 minutes. Rinse thoroughly with distilled water. Soak in its storage solution for at least

2 hours before use. The pores of the reference junction may become clogged. If this happens, heat to

50 C in 3 to 4 mol dm-3 Potassium Chloride (KCl), or pH 4 buffer solution for 1 hour, then allow to cool

to room temperature in the same solution. Rinse with distilled water and soak in its storage solution for

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at least 30 minutes before use.

Inorganic coatings: - Soak in either 0.1 mol dm-3 Tetrasodium E.D.T.A acid solution or 1% Decon 90

solution for 1 – 2 hours.

Oil, Grease: - Carefully wash the electrode under warm tap water, using a non-filming dish washing

detergent or stain removing prewash pre-treatment. Do not use automatic or electric dishwasher

detergents. An overnight soak may be needed if build-up is heavy. Rinse thoroughly with fresh tap

water, followed by 3 rinses of distilled water. Soak the electrode in its storage solution for at least 30

minutes before use.

Protein & Fatty Materials:

- Either gently wipe the bulb with a tissue soaked in propanol, soak in 1%

pepsin in 0.1 mol dm-3 hydrochloric acid (HCl) for at least 10 minutes or soak the pH electrode in

contact lens enzymatic cleaner solution overnight. Rinse thoroughly with distilled water.

Highly resistant deposits

: - Clean with H2O2 or sodium hyperchlorite.

Bacterial cultures

: - Chemically sterilize with ethylene oxide, soak a cloth to wipe the entire body.

CAUTION

- Do not use strong solvents such as halogenated hydrocarbons, petroleum ether, etc. for

cleaning.

Connectivity

The sensor is both USB and Bluetooth compatible. Install the EasySense2 app, if it is not already on

your device. For details of how to operate the EasySense2 app, please refer to the EasySense2

documentation.

USB Connectivity

Quick Steps

1.Connect the sensor to the computer’s USB port using the USB cable supplied.

2.The computer will automatically detect a new device and depending on your operating system, will

install any applicable device drivers.

3.Start EasySense 2 app.

4.Within the EasySense2 app, the Devices icon will change to green to show that the sensor is

connected, and the status light on the sensor will also turn green. 

5.Begin your practical investigations.

Bluetooth Connectivity

Using Bluetooth, the sensor can wirelessly connect to mobile devices such tablets and mobile phones,

as well as desktop or laptop computers, giving students the ability to run experiments independently

without being tethered to a device.

See the EasySense2 app user manual system requirements for further details.

Quick Notes on Bluetooth Connectivity

Only use with the EasySense2 app, you do not need to pair the device. If paired, the sensor will not be

available to the EasySense2 app.

Computers or devices will need to support Bluetooth Low Energy (BLE). For further information refer to

the instructions provided for the EasySense2 app.

Quick Steps

Short press the on/off switch to turn the sensor on, blue LED will flash.

2.Open the EasySense2 app.

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3.Select the Devices icon.

Select your sensor from the list of available sensors to connect to the device. Your sensor is

identified by its unique ID in the list.

5.Click on connect at the side of your sensor in the list.

The Devices icon will change to green and the status light on the sensor will flash green to indicate a

connection has been established.

7.Begin your practical investigations.

1110PK - Wireless pH Sensor Pack

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Charging the Sensor

The Smart Wireless sensors are fitted with a rechargeable lithium-ion battery and can be charged via

the USB port. Use the supplied USB lead to connect the sensor either directly to a USB port on your

computer, a powered USB hub or a USB mains charger that outputs 5 V at 500 mA or more.

A full charge can take up to 4 hours.

Additional Information

Whenever the sensor is connected to the USB port on the computer or to a USB mains charger (output

5 V at 500 mA or more), it will automatically recharge the battery (LED status flashing white).

When connected to a computer, the computer should be turned on and not in sleep or standby mode,

as the battery may drain instead of charge.

The sensor will stay awake for 60 mins when Bluetooth advertising (LED status flashing blue).

Lithium-ion batteries are ‘memory-free’ and prefer a partial rather than a full discharge. Constant partial

discharges with frequent recharges will not cause any harm. Frequent full discharges should be

avoided whenever possible. Ideally the sensor should be stored at about 40% or more charge.

The speed at which a lithium-ion battery will age is governed by both its storage temperature

(preferably less than 40 C) and state-of-charge.

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