Turner Designs Little Dipper Manual de usuario

Little Dipper™

User’s Manual

January 07, 2023

P/N: 998-2853

Revision A

TURNER DESIGNS

1995 N. 1st Street.

San Jose, CA 95112

Phone: (408) 749-0994

FAX: (408) 749-0998

Little Dipper™User’s Manual Rev. A

Table of Contents

Before Use

1.1

Disposal

1.2

Specifications

Initial Information

2.1

Description

2.2

Inspection and Setup

2.3

General Information, Precautions & Cleaning

Instrument Operation and Calibration

3.1

3.2

3.3

Instrument Power Up

Sample Analysis

Calibration Procedure (only needed if Little Dipper fails calibration check)

Warranty

4.1

Terms

4.2

Warranty Service

4.3

Out of Warranty Service

Appendixes

Linear Range, Quenching and Temperature Considerations

Little Dipper™User’s Manual Rev. A

1 Before Use

1.1 Disposal

WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE) DIRECTIVE

Turner Designs is in the business of designing and selling products that benefit the well-being of

our environment. Accordingly, we are concerned with preserving the surroundings wherever

our instruments are used and happy to work with customers by complying with the WEEE

Directive to reduce the environmental impact resulting from the use of our products.

WEEE Return Process:

To arrange the return of an end-of-life product, proceed as follows:

If you purchased your instrument through a Turner Designs Distributor, please contact your

local representative. They will instruct you where to return the end-of-life product.

If you purchased your instrument directly from Turner Designs please contact Turner

Designs Customer Service

By Phone: 1 (877) 316-8049

By Email: Customer Service at support@turnerdesigns.com

Turner Designs will provide a WEEE RMA Number, a Shipping Account Number, and a Ship

to Address. Package and ship the product back to Turner Designs.

The product will be dealt with per Turner Designs’ end-of-life recycling program in an

environmentally friendly way.

Little Dipper™User’s Manual Rev. A

1.2 Specifications

Little Dipper

Linear range

0-199 ppb

Resolution

1 ppb

Power

2 AA batteries, standard or rechargeable

Auto Power Off

After 1 minute of inactivity

Calibration Type

Single point

Light source

LED

Detector

Photodiode

Case

Meets IP67 Standard; dustproof/waterproof

Temperature

41 - 104 °F, (5 - 40 °C)

Size

8.9 x 2 x 1.75 in. (22.6 x 5.1 x 4.5 cm)

Weight

4.3 oz, (120 g)

Little Dipper™User’s Manual Rev. A

2 Initial Information

2.1 Description

The Little Dipper is a lightweight, handheld fluorometer ideal for field use. Its small size

makes it perfect for the user who needs quick measurements away from the laboratory.

2.2 Inspection and Setup

- Inspection

Upon receiving your instrument, please inspect everything carefully and make sure

all accessories are present. Contact your local distributor for help if there are

difficulties. All shipments include:

•The Little Dipper™

•The User’s Manual and Quick Start Guide on USB Flash Drive

•Laminated Quick Start Guide

•2 - AA batteries

•Shade Cap P/N 023-2850

•Wrist strap P/N 030-8500-1

- Setup

Before the Little Dipper can be used, the supplied batteries

must be installed.

1. On the back side of the instrument, remove the battery

panel by loosening the screws and then gently remove the

back panel.

2. Install the 2 - AA batteries and verify the batteries are

positioned correctly.

3. Replace the battery panel and press it down into position.

4. Hold the battery panel down in place and gently tighten the

screws until it is snug. Do not over tighten the screws.

2.3 General Information, Precautions and Cleaning

•The Little Dipper should NOT come into contact with any organic solvents or

strong acids and bases.

•There are three messages that will display during use of the Little Dipper, “td” for Turner

Designs, “Lb” for Low Battery, and numerical readings from 0-199.

•Rinsing with fresh water and drying the instrument thoroughly with a non-abrasive cloth

after use is recommended.

•Visual inspection of the optical face for fouling

should be done on a regular basis.

•To inspect the optical face, remove the cap:

•If there is any noticeable fouling, use a soft bristle

brush or non-abrasive cloth and soapy water to

clean the optical window. Rinse thoroughly.

•Do not expose the Little Dipper to

temperatures outside the specified range of 5 to 40 °C or damage may

occur to the unit that will not be covered under warranty.

•Do not use instrument under water. Sensor works best when partially

submerged below the Stop line.

Rotate the cap

until the seam

is aligned with

opening. Then

remove the cap.

Reverse steps

to install the

cap.

Little Dipper™User’s Manual Rev. A

3 Instrument Operation and Calibration

3.1 Instrument Power Up

To turn on the Little Dipper, press the power button.

3.2 Sample Analysis

1. Insert the sensor in the sample at an angle with the cap fully submerged.

2. Shake gently to make sure all bubbles are purged from the cap. Then vertically

straighten the device.

3. Press the READ button.

3.3 Calibration Procedure

Note: Little Dipper is calibrated when shipped. Only re-calibrate if unit does not read

100 ± 3% for the appropriate Standard Solution. Use P/N 10-608 (PTSA 100 ppb).

Calibrating 100

1. Prepare a 500 mL darkened beaker with the standard solution.

2. To calibrate, press and hold the READ button while unit is off. If taking measurements

with the cap, ensure cap is still on the Little Dipper while doing all calibrations. If

you choose to measure without the cap, then have calibrations with the cap off.

3. While holding the READ button, press and hold the Power button until 100 appears on

the screen. Release both buttons.

4. Insert the sensor in the standard at an angle with the cap fully submerged, shake gently

to make sure all bubbles are purged from the cap, straighten sensor vertically from an

angle, and press the READ button.

5. The display will flash “td” four times and then the unit will automatically turn off.

At this point the Little Dipper is calibrated. You can confirm the calibration by turning the

unit on and pressing the READ button while the unit is in the standard solution. Readings

should be 100 ± 3%.

Calibrating 0

6. Repeat Step 2 from Calibration 100 to begin calibration for 0.

7. Repeat Step 3 of continuing to hold both buttons, the 100 will appear and after 15

seconds, the 0 will now display. Release both buttons.

8. Hold sensor away from yourself at least 4 feet away from any reflective surfaces, direct

sunlight, or the ground and press the READ button.

9. The display will flash “td” four times and then the unit will automatically turn off.

You can confirm the calibration by turning the unit on and pressing the READ button while

the unit is facing away from reflective surfaces and the ground. Display should show 0.

READ

Little Dipper™User’s Manual Rev. A

4 Warranty

4.1 Terms

Turner Designs warrants the Little Dipper and accessories to be free from defects in

materials and workmanship under normal use and service for a period of 12 months from

the date of shipment from Turner Designs, with the following restrictions:

•Turner Designs is not responsible for replacing parts damaged by accident or neglect.

Damage from corrosion is not covered. Damage caused by customer modification of the

instrument is not covered. Instrument must be used as described in the User’s Manual.

•This warranty covers only Turner Designs products and is not extended to equipment

used with our products. We are not responsible for incidental or consequential

damages, except in those states where this limitation is not allowed. This warranty gives

you specific legal rights and you may have other rights which vary from state to state.

•Damage incurred in shipping is not covered.

4.2 Warranty Service

To obtain service during the warranty period, the owner shall take the following steps:

1. Write, email, or call the Turner Designs Technical Support department and describe as

precisely as possible the nature of the problem.

Phone: 1 (877) 316-8049

Email: support@turnerdesigns.com

2. Carry out any adjustments or tests as suggested by the Technical Support Department.

3. If proper performance is not obtained you will be issued a Return Authorization number

(RMA). Package the unit, write the RMA number on the outside of the shipping carton,

and ship the instrument, prepaid, to Turner Designs. If the failure is covered under the

warranty terms, the instrument will be repaired and returned free of charge, for all

customers in the contiguous continental United States.

For customers outside of the contiguous continental United States who purchased

equipment from one of our authorized distributors, contact the distributor. If you

purchased directly, contact us. We will repair the instrument at no charge. Customer

pays for shipping duties and documentation to Turner Designs. Turner Designs pays for

return shipment (custom duties, taxes and fees are the responsibility of the customer).

4.3 Out of Warranty Service

Follow steps for Warranty Service as listed above. If our Technical Support department can

assist you by phone or correspondence, we will be glad to, at no charge. Repair service will

be billed on a fixed price basis, plus any applicable duties and/or taxes. Shipment to Turner

Designs should be prepaid. Your bill will include return shipment freight charges.

Address for Shipment:

Turner Designs

1995 N. 1st Street

San Jose, CA 95112

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