Spectrum 2105 Manual de instalación

Field Scout®

SoilStik™pH Meter

Operation Manual

Catalog #2105

Technologies, Inc.

Spectrum

General Overview .....................................3

LCD Display................................................4

LCD Display Messages ............................5

Meter Components ...................................6

Calibration .................................................7

Changing the Temperature Units.............8

Taking Liquid/Soil Measurements ...........9

Storing/Recalling Measurements...........10

Sensor Replacement...............................11

Battery Replacement...............................12

Meter Handling/Troubleshooting ..........13

Specifications .........................................14

Warranty ...................................................15

This manual will familiarize you with the features and

operation of your new meter. Please read this manual

thoroughly before using your meter. For customer support

or to place an order, contact Spectrum Technologies, Inc

between 7:30 a.m. and 5:30 p.m. CST.

Phone: (800) 248-8873 or (815) 436-4440

Fax: (815) 436-4460

E-mail: info@specmeters.com

Website: www.specmeters.com

Contents

Congratulations on the purchase of your Field Scout™

SoilStik™ Pro Meter. This manual describes how to

use your pH meter and keep it working accurately.

Read the manual thoroughly in order to make effective

use of your meter.

The SoilStik delivers high quality answers, with an

accuracy of +/- 0.01 pH units. This self-contained digital

meter allows you to test the pH levels in water, soil, and

other liquids. The replaceable sensor makes the

measurement of small samples much more convenient.

The sensor provides a visual indication of when

replacement is due.

The meter has a two-point, automatic calibration (pH 4

and 7), with a range of pH 2.0-12.0. The display will

show your results to a resolution of 0.01 pH units.

Getting Started

• New meters are shipped with a battery insulating

strip. Remove this strip before attempting to power

up the meter. The battery compartment is ac-

cessed by removing the cap at the top of the meter.

• Remove the cap from the bottom of the SoilStik to

expose the electrode glass surface and reference

junction.

• Before first use, or after extended storage, soak the

electrode (with its cap removed) in pH 4 solution for

about 10 minutes.

General Overview

LCD Display

1. Bar graph reading

2. Measurement reading

3. BAT (low battery) and

HOLD (data hold) indicators

4. Temperature display

5. Bar graph scale designations

6. Units of measure

7. Calibration indicators

8. RENEW and CAL indicators

In addition to displaying the pH and temperature read-

ings, the LCD of the SoilStik can also display:

- CAL reminder

If the SoilStik is powered up in pH mode 15 times with-

out being calibrated, the CAL reminder symbol appears

on the LCD indicating that the SoilStik may require cali-

bration. Some applications may require recalibration of

the electrode more frequently than others. The CAL

display is simply a reminder and will turn off when the

pH electrode is recalibrated.

- RENEW reminder

The RENEW symbol appears when the output of the

pH electrode fails an internal diagnostic test. A flashing

RENEW warning indicates that the probe may be near-

ing the end of its useful life. Try to clean and recalibrate

the meter. If the RENEW symbol remains flashing, Re-

move the battery holder, remove and replace the bat-

teries and re-insert the battery holder (see p. 12). If this

does not cause the RENEW symbol to disappear, re-

place the electrode.

- HOLD

While in measurement mode, pressing the MODE but-

ton causes the meter to hold the value on the LCD.

The reading is also stored in short-term memory (see p.

10)

- BAT

Indicates that battery power is low. To preserve battery

life, the meter automatically powers off after 10 minutes

of inactivity.

LCD Display

Messages

Meter Components

1. Battery compartment cap

2. LCD Display

3. MODE/HOLD button

4. CAL/RECALL button

5. ON/OFF button

6. Electrode collar

7. pH electrode

(Electrode cap is not shown)

The SoilStik automatically recognizes buffer solution

pH’s of 4, 7, and 10. Buffer solutions of pH 4 and 7 are

included with the meter. Although it is possible to cali-

brate to all 3 values, a two-point calibration with a

buffer of 7 plus 4 or 10 (whichever is nearest to the ex-

pected sample value) is always recommended. A one-

point calibration (with a value closest to the expected

sample value) is also valid. For best accuracy, always

calibrate at the sample temperature.

Calibration Procedure

1. Put a small amount of buffer solution in a small plas-

tic cup (provided). For multi-point calibrations, pH 7

should be calibrated first, followed by 4 and/or 10.

Place the electrode into the buffer solution and momen-

tarily press the CAL/RECALL button.

2. The SoilStik will automatically recognize the calibra-

tion solution. After the CAL/RECALL button is re-

leased, the LCD will display CAL/RECALL. The pH

calibration value will then flash on the LCD.

3. When calibration is complete, the SoilStik automati-

cally displays the END symbol and returns to normal

operation mode. Note: If the calibration solution is more

than 1 pH unit different from pH 4, 7, or 10, the SoilStik

will assume an error has been made, abort the calibra-

tion and return to normal operation mode without

changing any internal calibration constants.

4. The appropriate circled indicator (,, or ) will ap-

pear on the LCD when a calibration has been com-

pleted with a given calibration buffer solution. The cali-

bration constants are stored until a new calibration is

performed.

5. For a two- or three point-calibration, repeat steps 1

to 4. As additional calibrations are performed, addi-

tional circled indicators will appear on the LCD.

Calibration

When the meter is powered off, the calibration con-

stants are retained. Therefore, the circled indicators for

all completed calibrations will remain illuminated. How-

ever, when a new calibration is done, only the circled

indicator for that pH level will be displayed. If a multiple-

point calibration is desired, the calibration must be per-

formed for the other pH levels as well.

Notes:

1. If the batteries are removed or go dead, any user-

created calibration data will be lost and the meter

will return to the factory defaults.

2. Always turn the meter off and then on before cali-

brating to allow sufficient time to complete the cali-

brations during one power cycle, especially for

multi-point calibrations. If the meter powers off

automatically during a calibration, any completed

calibrations will be saved. But, after the meter is

powered up again, any new multi-point calibration

will have to be done in entirety.

Changing the

Temperature Units

Press and hold the CAL/RECALL button for approxi-

mately 3 seconds. The oC or oF symbol will change

first and the numerical temperature value will change

after the button is released. If the meter accidentally

transitions into CAL mode, the CAL symbol will appear

on the LCD. Simply turn the SoilStik off and start again.

Liquids Readings

When the electrode is placed in a solution, the main

display and bar graph indicate the pH reading while the

lower display reads temperature (readings flash until

they have stabilized).

The curved bar graph is centered at pH 7. At a pH of 7,

no bars will be visible on the bar graph. When the pH >

7, the bars will extend to the right. When the pH < 7,

the bars will extend to the to the left.

Soil Slurry Readings

1. Add 1 part soil to 1 part distilled water.

2. Mix for 30 seconds.

3. Allow 1 to 2 minutes for soil slurry to come into equi-

librium

4. Submerge the sensor into the soil slurry and record

the result.

5. Wash the sensor with distilled water.

Direct Soil Readings

The SoilStik can also be used to take measurements

on soil cores. Moisten the surface of the core with dis-

tilled water and press the electrode onto the moist soil.

Be sure that the clear sensor and reference electrode

are both in contact with the soil. Rinse and clean the

sensor well before taking additional readings.

Taking Liquid and

Soil Measurements

Storing readings in short-term memory

While in measurement mode, pressing the MODE/

HOLD button will freeze the value on the LCD and

store the number in memory. The LCD will briefly dis-

play the memory location number and then the value

stored. The HOLD symbol will appear above the tem-

perature reading. Momentarily press MODE/HOLD

again to return to normal operation.

The short-term memory can hold 15 readings. After 15

readings have been saved, the SoilStik will return to

memory location 1 and start overwriting existing data

with newly stored data.

Recalling stored readings

Check that the HOLD symbol is not displayed. If it is,

exit the HOLD function by momentarily pressing the

MODE/HOLD button.

To view stored readings, momentarily press the CAL/

RECALL button and then press the MODE/HOLD but-

ton while the CAL symbol is displayed. The storage

location number (1 through 15) will flash. If the meter

accidentally transitions into CAL mode (causing the

display to flash), press the CAL/RECALL button again

to exit and start over.

Storing and

Recalling

Measurements

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