OHAUS TA152 User manual

Traveler™ Scales

1. INTROD CTION

This manual contains installation, operation and maintenance instructions for the Traveler

Scales. Please read the manual completely before using the scale.

1.1 Safety Precautions

Please follo these safety precautions:

• Verify that the Po er Adapter input voltage matches the local po er supply voltage.

• Use the scale only in dry locations.

• Do not operate the scale in hostile environments.

• Do not drop loads on the pan.

• Do not place the scale upside do n on the pan.

• Service should be performed only by authorized personnel.

1.2. Controls

Figure 1-1. Controls.

TABLE 1-1. CONTROL FUNCTIONS

Key Name Function

•Primary function (Short Press) – If scale is Off, turn On. If

scale is on, perform Zero/Tare function

•Secondary function (Long Press) – Turn scale Off

On-Zero

Off

Yes

•Menu function – (Yes) This key is used to accept the currently

displayed setting

•Primary function (Short Press) – Send the current display

value to serial port if installed Print

Cal •Secondary function (Long Press) – Starts Span calibration as

available in Menu

Traveler™ Scales

Key Name Function

•Primary function (Short Press)– Advances to next available

unit

nit

No •Menu function – (No) This key is used to reject the displayed

setting and advance to next available setting

2. INSTALLATION

2.1 Package Contents

• Scale

• Pan

• Draft Shield

• Po er Adapter

• Calibration Weight (on some models, see Table 6.1)

• Instruction Manual

• Warranty Card

2.2. Location

Use the scale on a firm, steady surface. Avoid locations ith excessive air currents,

vibrations, heat sources, or rapid temperature changes.

2.3. Transportation Lock, Calibration Lock & Pan Installation

Before using the scale the Transportation Lock must be released. At the bottom of the scale

slide the locking pin to the position. See Figures 2-1.

If the scale is to be calibrated by the user ensure that the Calibration Lock is set to

position. See Figure 2-2.

Install the metal pan over the plastic sub-platform.

Figure 2-1. Release Transportation Lock Figure 2-2. Release Calibration Lo k

Traveler™ Scales

2.4 Connect Power

A Po er Adapter is used to po er the scale. Connect the Po er Adapter to the po er outlet

(see Figure 2-3) and the po er plug to the back of the scale (see Figure 2-4)

Figures 2-3, Po er Adapter

Figure 2-4, Po er Plug

2.5 Battery Installation and se

The scale may also be po ered by batteries. Remove the battery cover and install four

alkaline AA (LR6) type batteries, (not included). Refer to Figure 2.5 to properly install the

batteries. Under battery po er a battery symbol is sho n on the left side of the display.

The Auto-Off setting is useful for conserving battery po er, see section 4.2.1.

Figures 2-5, Battery Installation

For use only with UL or CSA Certified

(or equivalent approved) power

adapter, whi h is a Class 2 or a

Limited Power Sour e devi e.

Traveler™ Scales

2.6 Initial Calibration

Po er on the scale by pressing On-Zero. Allo at least one minute for the scale to stabilize

before calibrating. Press and hold the Print/Cal button until [CAL

CALCAL

CAL] is displayed. The display

flashes [-

-C

C-

-] hile zero reading is taken. The display flashes the required span mass. Put

the indicated calibration mass on the pan and press Yes. The display flashes [-

-C

C-

-]. When

calibration is complete, [Don

DonDon

DonE

E] is displayed.

Note: Calibration is also available in the Setup menu, see section 4.2.1.

3. OPERATION

Some eighing Units of measure may initially be unavailable. They can be enabled in the

Main menu Unit [U.n.i.t], see section 4.

3.1 Draft Shield

The draft shield as designed ith an easy to remove center piece hich can be used as a

high quality sample tray. Even ith the center piece removed the draft shield ill provide

increased protection from rough environments hile maintaining eighing speed. To

remove the center piece, rotate counter-clock ise. See Figure 3-1. With the sample tray

firmly in place the unique shape of the draft shield also allo s for the efficient stacking of

one scale on top of another.

Figure 3.1, Sample Tray Removal

Traveler™ Scales

3.2 Weighing Mode

Press nit to advance to next available eighing Unit.

Press Zero to zero the scale and then place objects to be eighed on the pan.

4. SETTINGS

The Settings allo s the user to customize the scale.

4.1 Menu Structure

Table 4-1 illustrates the menu structure.

TABLE 4-1 MEN

4.2 Menu Navigation

Main level menus are identified by decimal points bet een each letter, for example

[S.E.t.U.P

S.E.t.U.PS.E.t.U.P

S.E.t.U.P].

Enter Menu: With the s ale off, press and hold the On button. Continue holding

the On button until [S.E.t.U.P

S.E.t.U.PS.E.t.U.P

S.E.t.U.P] is displayed. Each main menu is

entered by pressing Yes. Advance to the next main menu by

pressing No.

Changing Settings: Within each main menu are sub-menus. Enter each sub-menu by

pressing Yes. Advance to the next sub-menu by pressing No. To

accept the displayed sub-menu setting, press Yes. To advance to the

next setting, press No.

Menu Exit: The last item in each sub-menu is [EnD

EnDEnD

EnD]. Press Yes to return to the

main menu. The last item in the main menu is [E.n.D

E.n.DE.n.D

E.n.D]. Press Yes to

return to the previous eighing mode.

S.e.t.u.p

A-Off On

OFF

OFFOFF

OFF

SpaN Press

Yes or No

Lin Press

Yes or No

End Press

Yes or No

U.n.i.t.

U.n.i.t g On

On On

OFF

U.n.i.t N On

OFF

OFFOFF

OFF

End Press

Yes or No

E.n.d.

Press

Yes or No

Notes:

Notes:Notes:

Notes:

Unit Symbol Factor

Gram g 1

Ne ton N 9.806e-3

Default menu settings are sho n

in bold.

Traveler™ Scales

4.2.1 Setup Menu [S.E.t.U.P

S.E.t.U.PS.E.t.U.P

S.E.t.U.P.]

The Setup menu contains the follo ing sub-menus:

Auto-Off [.A

A-

-OFF.

OFF.OFF.

OFF.]: Auto Off settings: On Off

OffOff

Off

Setting [On] ill automatically turn the scale off after no activity

is detected for 4 minutes.

Span Calibration [SPAN

SPANSPAN

SPAN]: Uses two weight values: Zero and a value at or near the

full capacity of the scale. Span calibration should be

performed if the scale is repositioned or hen the room

temperature changes significantly.

Linearity Calibration [L

Lin

inin

in]: Uses three eight values: Zero, a mid-range value and full

capacity. Generally this calibration is not required unless

testing sho s that the linearity error exceeds the linearity

tolerance in the specification table. Accuracy of eights is

important to maintain eighing integrity.

4.2.2 nit Menu [U.n.i.t

U.n.i.tU.n.i.t

U.n.i.t]

Each Weighing Unit may be individually set to On or OFF.

See Table 4-1 for the symbols associated ith each Unit or Mode.

4.2.3 Other Menus

Additional Menus are available if a serial interface option is installed in the scale. These

menus are explained ithin the user manual of each option kit.

Traveler™ Scales

4.3. Calibration Lock Feature

Sliding the s itch fully to the lock position prevents calibration of the scale. Using a

paper or ire seal ill physically secure the s itch if required.

Locking the calibration

Adhesive paper seal

Wire or plastic tie seal

Figure 4-1. Locking and Sealing the Calibration Lock S itch.

4.4 Weigh Below Feature

The Weigh Belo Hook is stored inside the battery cover. Thread the hook into the access

hole at the bottom of the scale. Mount the scale onto an appropriate assembly that allo s

free orking space belo the hook. See Figure 4-2. Note: Never allo the scale to rest

directly on the hook.

Weigh Belo Hook access hole

Figure 4-2. Setup for using the Weigh Belo Hook.

5. MAINTENANCE

5.1 Troubleshooting

The follo ing table lists common problems and possible causes and remedies. If the

problem persists, contact Ohaus or your authorized dealer.

Traveler™ Scales

TABLE 5-1. TRO BLESHOOTING.

Symptom

Possible Cause

Remedy

Cannot turn on 

No po er to scale



Empty or incorrectly installed

batteries



Verify AC adapter connections and

voltage.



Replace batteries, check polarity.

Poor accuracy 

Improper calibration



Unstable environment



Transportation Lock is set



Debris touching the pan



Draft shield is touching the

pan or sample.



Perform calibration.



Move scale to suitable location.



Slide the pin to the unlocked position.



Clean any debris next to or under the

pan.



Check that pan is fully seated, check

sample height.

Cannot calibrate



Unstable environment



Incorrect calibration mass



Transportation Lock is set



Calibration Lock s itch is set



Move the scale to a suitable location.



Use correct calibration masses.



Slide the pin to the unlocked position.



Slide the s itch to the unlocked position.

Err 1 

Invalid Checksum data.



Cycle scale off/on.



Contact Ohaus or authorized dealer.

Err 2



Over-load or Under-load

condition.



Transportation Lock is set



Improper calibration



Verify pan is installed and/or excess load

is removed from pan.



Slide the pin to the unlocked position.



Perform calibration.

Err 4 

Invalid calibration mass. 

Verify correct calibration mass is being

used.

Err 8



RS232 buffer is full.



Cycle scale Off/On.



Check RS232 settings in scale and

computer hen RS232 option is installed.

Err 9 

Internal data error. 

Contact Ohaus or authorized dealer.

(Flashing) 

Battery po er is lo . 

Replace batteries soon.

bAtt LowW 

Battery po er is too lo for

proper operation.



Replace batteries.

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