Instruction Manual
ITEM: BIMETAL THERMOMETER
MODEL : T110, T111, T112, T114, T120, T123, T140, T150,
T190, T191, T220, T229, T250, T259, T290, T359
Instructions for proper and safe operation
Please read instructions carefully prior to using the instrument for proper and safe operations.
Mishandling could cause device malfunctions and result in disastrous injuries or accidents.
WARNING
1. Do not exceed the temperature range allowed.
2. Do not apply excessive load, vibration or impact.
Damaged or ruptured product may cause temperature measurement deviations.
3. Please use within the specified temperature ranges.
Exceeding the temperature range may cause disruption in nearby area
due to failure of or damage to the temperature indicator.
4. Please be careful not to bend thermometer stem.
A bent stem STEM may interfere with the normal operation to cause temperature deviation.
5. Please always follow the mounting tips in the manual in cases of field installation.
6. Do not make any modifications to the product or to add more functions.
※ Please consult with us for any repair.
CONTENTS
1. Overview
2. Applications
3. Characteristics
4. Specifications and standards
5. Exterior dimensions
6. Names of parts and principles of operation
7. Installation
8. Operation instructions
1. Overview
This thermometer using bimetal is most commonly used in general industry
since it is able to meaure temperature immediately after on-site installation.
Please read the user manual carefully and thoroughly before using the product
for proper and safe operations.
2. Applications
It indicates specific temperature to be used in process control and
to determine the temperature in the pipe for more stable operation.
3. Characteristics
Bimetal thermometer demonstrates the following characteristics:
1) Its general measurement rage is from -50℃ to 600℃ with approximately ±2%
accuracy. Please do not use outside of the specified range.
2) Its accuracy may depend on thermometer design, mesuring environment, proper
insertion, accurate calibration or bimetallic thermal stability.
3) Response rate may depend on thermometer desing and conditions of its use.
4) Simple structure provides easy maintenance and deterioration due to aging is
minimal.
4. Specifications and standards
1) Indicator size : 75℃, 100℃, 125℃, 150℃
2) Indicator accuracy : ±2.0%( or ±1.0% ) of Full Scale
3) Accuracy : ±2.0% of Full Scale
4) Maximum temperature range : -50℃ ~ 600℃
5) Liquid end material : 304 Stainless Steel, 316 Stainless Steel
6) Contact area size : 3/8", 1/2", 3/4" PT or NPT
7) Temperature sensor filling material : Bimetal
8) Temperature sensor length : Direct connection
5. Exterior dimensions
Dimensions( mm )
DIAL SIZE AVAILABLE CODE A E
75
100
125
150
Y 86.5 101
Y* 86.5 99
Y 111 105
Y* 111 103
Y 138 103
Y* 138
Y** 169.5 132
Y*** 169.5 130
101
6. Names of parts and principles of operation
A. T190 Bimetal Thermometer
6
2
No. PART NAME DESCRIPTION
1
3
5
B. Bimetal
1 Cover Stainless Steel
4
2 Window Glass
3 Case Stainless Steel
4 Zero Adjustment Stainless Steel
5 Gauge Connection Stainless Steel
6
6 Stem or Bulb Stainless Steel
7 Element Bimetal
7
Operation principle: Bimetal composed of two metal of different expansion ratio
in temperature change is used. The temperature sensing part (⑥ in Fig. A)
has spiral bimetal (Fig. B) which will expand to indicate any temperature change.
There are T and L types that are operating in the same principle.
Bimetal used in thermometer is shown in Fig. B.
7. Installation
e
1) Please make sure of any damage present or condition the product is in prior to
installation.
2) Temperature deviation may occur depending on how deep the sensor is inserted.
Make sure to insert the temperature sensor completely in order to detect accurat
temperature.
NO YES
3) This product is sensitive to vibrations and physical impact.
4) Please install the thermometer away from any vibraion or physical impact,
if there is possibility of vibration or impact near its installation area.
5) It is recommended to use thermowell for maintenance.
*Please refer to thermowell manual for its installation and use.
6) Use proper wrench to install.
7) Do not hold the casing and turn. It may cause defect.
Please make sure the internal bellows is not twisted.
8) To bend the thermometer properly, unscrew a blot belowe the casing
in order to bend it in desired angle.
Loosen for Angle
9) Inspect the installation area to check for moisture, vibration, dust or corrosive gas.
10) Avoid installing in the area which might exceed the specified temperature range.
11) Please protect it from lightning or steam.
12) Avoid installing in direct sun light.
8. Operation instructions
1) Use in 75% of maximum capacity for commercial use.
2) Never use in temperature range in excess of specification.
3) Avoid sudden temperature changes.
4) Check if there is vibration, pulsation or heat in the piping line and use products
with capillary or select proper oil type if necessary.
Remote reading thermometer Direct reading thermometer with oil filled
5) One or two regular inspections in 6 month are recommended to check contact
operation or attempt.
6) In case of large deviation of indicator, dismount it to inspect.
7) Main causes are wearing of parts, corrosion or distortion due to external vibration
and/or impact. In this case, the removal of the cause, adjustment, replacement is
necessary.
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