Line Seiki TC-250 Instruction Manual

DIGITAL THERMOMETER MANUAL

TC-250

Type K

Misuse of this device may lead to injury to the

WARNING

user or damage to the device.

Customer Service

LINE SEIKI CO., LTD.

Address:

Contact :
E-mail :
Web :

37-7 Chuo-cho, 2-Chome
Meguro-ku, Tokyo 152-0001 Japan
Tel: [phone] Fax: [phone]
[e-mail]
http://www.lineseiki.com

TC-250

INSTRUCTION MANUAL

Thank you for purchasing our Digital Thermometer.
Please read this instruction manual carefully before
using to ensure the correct usage of this device.
Please keep this instruction manual for future
reference.

Safety Precautions

For safe usage of this device, please observe all statements regarding
precautions and warnings in this instruction manual.

ATTENTION

Operation

· Do not use this device near machines that emits strong
electromagnetic field or object that store static electricity.

· Do not drop or subject this instrument into strong impact.

· Do not attempt to disassemble or modify this instrument.

· To ensure stable measurement, do not apply rapid
temperature change to the instrument.

· Do not immerse the instrument in water. If it is immersed in
water accidentally, immediately pull it out and then check and
ensure that there is no water penetration.

I. Panel System

Input connector

Hold status indicator

Thermocouple type indicator

Data polarity indicator

Data Display

Power-ON/OFF key

Key Operation

ON / OFF Key

ON

OFF

· Pressing this key will turn ON and OFF the instrument

· Since this instrument has the Auto-Power Off function,
the power automatically turns OFF in approximately 10
minutes after the last key pressed.

· In any case, it is advisable to manually turning OFF the
power after each measurement

AUTO POWER OFF

ON

OFF

TC-250

HOLD

Auto-Power Off indicator

Low Battery indicator

Unit display

Hold key

LINE SEIKI

Thermocouple Probe

· Do not drop the probe or strike into hard surface.

· Do not bend the probe connector by applying strong force
from the upper and lower side.

· Do not measure beyond temperature limits of the
thermocouple probe being used.

· Do not use the thermocouple probe in places where electric
shock is

is suspected.

· Avoid using the thermocouple probe in measuring materials
which can cause corrosion.

· Take a long time when measuring non-metallic surface
temperatures due to poor thermal conductivity.

· When measuring surface temperature, make sure that the
thermocouple probe is in contact with the surface
perpendicularly for accurate measurement.

HOLD Key

HOLD

Display

Burn Out

(

----

)

· To hold the measured value temporarily, press this key
once

· Press again to unhold the measured value and returns
the instrument to the measuring state.

· When the probe is not properly connected to the
instrument, or the probe itself is broken, the unit will be
in Burn Out state and Burn Out display is shown.

· If the instrument is in Burn Out state, just connect the
probe and turn the Power Off then On to return the
instrument to normal operation.

· If the battery voltage decreases below the rated to the
value, Low Battery indicator will appear.

· If this indicator is shown, Auto Power Off is enabled
otherwise it is disabled.

· If measured value is put on hold ,this indicator is
displayed.

DIGITAL THERMOMETER MANUAL

TC-250

II. Operation Procedure

1.) Connect the probe to the instrument through the Input Connector

· Probe can be checked if properly connected with the Burn Out feature
of this instrument.

2.) Turn the power ON.

· Upon turning ON the instrument, all the display and indicators will light
up for several seconds. This is to check if all segments of the display
are working properly. Afterwards, it will shift to its normal operating
mode with the following default items and features.

  > Set at measuring mode.
  > Thermocouple type indicator is displayed.
  > Auto-Power Off indicator is displayed.
  > Other indicators are not displayed.

· Auto-Power Off function is automatically enabled upon turning ON the
instrument . To disable Auto -Power Off, turn ON the device while
pressing the HOLD key

· If the burnout display (----) is shown, the probe is not inserted properly.
In this case, check the probe side.

3.) Attach the sensor part of the thermocouple probe to the object you want
to measure.

· Wait until the measured value becomes stable.

4.) Turn OFF the instrument after using.

· After every use, always turn OFF the instrument.

III. Battery Replacement

If the " " indicator is displayed, it indicates a Low Battery condition and
the battery needs to be replaced. Please follow carefully the procedure
below for replacing battery.

V. General Specifications

Main Unit

MODEL

NO. OF INPUT

SENSOR TYPE

MEASURING

RANGE

RESOLUTION

ACCURACY

(at 25°C ±5°C)

TEMPERATURE

COEFFICIENT

SAMPLING TIME

LINEARIZE

METHOD

FUNCTIONS

0 - 199.9°C: ±0.1% of reading + 0.7°C

-0.1°C or less: ±0.2% of reading + 1°C
200°C above:±0.2% of reading + 1°C

±

0.015% of reading + 0.06°C/ °C

----

DISPLAY

°C Unit Measurement

OPERATING

TEMP./HUMIDITY

POWER SUPPLY

TC-250

1

Thermocouple Probe Type K

-160°C - +1,372°C

199.9°C and below: 0.1°C
200°C and above: 1°C

Approx. 1.2 sec.

Digital Linearize

Auto-Power Off, Data Hold,

Thermocouple Type
Burn-out
Low Battery
Auto-Power Off
Data Hold

0 - 50°C

0 - 90%RH at 0 - 35°C

006P (9V) Battery

Upper-Cover

3

A

B

1. Unscrew Screw , and then open the unit by pulling the Lower-Cover
in arrow direction.

2. Remove the battery on the printed circuit board.

3. Replace the battery with new one. Make sure the battery is properly
connected to the terminals.

4. Place back the Lower-Cover by inserting its front end first on arrow

direction and then push it closely to the Upper-Cover until it snaps.

5. Make sure the rubber gasket is properly located when the unit is closed.

6. Lock the unit with the Screw .

· Use only suitable battery written on the specification.

· Do not dispose battery on household waste, fire or water.

· Remove the battery when the device will not be used for long period of

time.

· The instrument cannot measure accurately after low battery indicator is

displayed. Please replace the battery immediately.

1

A

2

1

Lower-Cover

2

Screw

1

3

IV. Storage and Cleaning

· Storage Temperature: -10 - +50°C (14 - +122°F)

· Storage Humidity: Less than 85% RH.

· When storing the instrument, avoid the following locations where:

1. Humidity is high.

2. The instrument is exposed to direct sunlight.

3. The instrument is exposed to a extreme temperature.

4. Large vibration exist.

5. Dust, salt, and/or corrosive gas exist.

· Keep the instrument clean at all times.

· Wipe off stains using a moist and soft cloth. Do not use any cleaning

agents or solvents.

BATTERY LIFE

SIZE / WEIGHT

SENSOR

2

B

CONNECTOR

COMPLIANCE

VI. Accessories (Sold Separately)

- Carrying Case (HM-818)

- Thermocouple Probes (See catalog for probes)

Approx. 166(H) x 68(W) x 35(D)mm

This manual was last revised October 4, 2011. 4TC013E

All Rights Reserved,Copyright © 2011,LINE SEIKI CO.,LTD.

Approx. 500 Hours

Approx. 200g

Thermocouple Connector

CE and RoHS

*Subject to change without prior notice.