I. Introduction
The UT320A single input thermometer accepts Type K and J thermocouples.
Features:
- Wide measurement range
- High measurement accuracy
- Selectable thermocouple K/J.
Warning: For safety and accuracy, please read this manual before use.
II. Open Box Inspection
Open the package box and take out the device. Please check whether the following items are deficient or damaged and contact your supplier immediately if they are.
- 1. UT-T01: 1 pcs
- 2. Battery: 1.5V AAA: 3 pcs
- 3. Plastic holder: 1 set
- 4. User manual: 1
III. Safety Instructions
If the device is used in a manner that is not specified in this manual, the protection provided by the device might be impaired.
- 1. If low power symbol [low power] appears, please replace the battery.
- 2. Do not use the device and send it to maintenance if malfunction occurs.
- 3. Do not use the device if explosive gas, steam or dust surrounding is present.
- 4. Do not input overrange voltage (30V) between thermocouples or between thermocouple and the ground.
- 5. Replace parts with the specified ones.
- 6. Do not use the device when the rear cover is open.
- 7. Do not charge the battery.
- 8. Do not throw the battery into fire or it may explode.
- 9. Identify the polarity of the battery.
IV. Structure
The device structure includes:
- 1) Thermocouple jacks
- 2) NTC inductive hole
- 3) Front cover
- 4) Panel
- 5) Display screen
- 6) Buttons
Figure 1: Diagram showing the device layout with numbered components: 1. Thermocouple jacks, 2. NTC inductive hole, 3. Front cover, 4. Panel, 5. Display screen, 6. Buttons.
V. Symbols
The device uses the following symbols:
- 1) Average value
- 2) Data hold
- 3) Maximum temperature
- 4) Minimum temperature
- 5) Low power
- 6) Thermocouple type
- 7) Temperature unit
- 8) Auto power off
Figure 2: Diagram showing symbols: 1. Average value, 2. Data hold, 3. Maximum temperature, 4. Minimum temperature, 5. Low power, 6. Thermocouple type, 7. Temperature unit, 8. Auto power off.
VI. Buttons and setup
Buttons:
- Power/Auto Shutdown: Short press to power ON/OFF. Long press to switch ON/OFF auto shutdown function. An auto shutdown indicator is shown when active.
- Temperature Unit: Short press to switch between °C/°F.
- MODE: Short press to switch between MAX/MIN/AVG modes. Long press to switch thermocouple type (K/J).
- HOLD: Short press to switch ON/OFF data hold function. Long press to switch ON/OFF backlight.
VII. Operation instructions
Connection:
A. Insert thermocouple into input jacks.
B. Short press the power button to turn on the device.
C. Setup the thermocouple type (according to the type being used).
Note: If the thermocouple is not connected or in open circuit, "----" appears on the screen. If over range occurs, "OL" appears.
Temperature display:
A. Short press °C/°F to select temperature unit.
B. Place the thermocouple probe on the object to be measured.
Note: It takes several minutes for readings to steady if thermocouples are just inserted or replaced. This ensures the accuracy of cold junction compensation.
Data hold:
A. Short press to hold the data displayed. The HOLD symbol appears.
B. Short press again to switch off data hold function. The HOLD symbol disappears.
Backlight ON/OFF:
A. Long press the HOLD button to turn on backlight.
B. Long press the HOLD button again to turn off backlight.
MAX/MIN/AVG value:
Short press the MODE button to cycle through MAX, MIN, AVG, or regular measurement. The corresponding symbol appears for different modes (e.g., MAX appears when measuring the maximum value).
Thermocouple type:
Long press the MODE button to switch thermocouple types (K/J). "TYPE:K" or "TYPE: J" indicators are shown.
Figure 3: Diagram illustrating operation: 1. Thermocouple plug, 2. Contact point, 3. Object being measured, 4. Thermometer.
VIII. Specifications
Table 1: Specifications
| Range | Resolution | Accuracy | Remark |
|---|---|---|---|
| -50~1300°C (-58~2372°F) | 0.1°C (0.1°F) | ±1.8°C (-50℃~0℃) ±3.2°F ((-58~32°F)) ±[0.5%rdg+1°C] (0℃~1000℃) [0.5%rdg+1.8°F] (32~1832°F) [0.8%rdg+1°C] (1000℃~1300℃) [0.8%rdg+1.8°F] (1832~2372°F) | K-type thermocouple |
| -50~1200℃ (-58~2152°F) | 0.1°C (0.1°F) | ±1.8°C (-50℃~0℃) ±3.2°F ((-58~32°F)) ±[0.5%rdg+1°℃] (0℃~1000℃) [0.5%rdg+1.8°F] (32~1832°F) [0.8%rdg+1°C] (1000℃~1300℃) [0.8%rdg+1.8°F] (1832~2192°F) | J-type thermocouple |
Note: Operating temperature: -0~40°C (32~102°F) (thermocouple error is excluded in specifications listed above)
Table 2: Specifications for different thermocouple types and applications
| Model | Range | Scope of application | Accuracy |
|---|---|---|---|
| UT-T01 | -40~260°C (-40~500°F) | Regular solid | ±2°C (-40~260℃) ±3.6°F (-40~500°F) |
| UT-T03 | -50~600°C (-58~1112°F) | Liquid, gel | ±2℃ (-50~333℃) ±3.6°F (-58~631°F) ±0.0075*rdg (333~600°C) ±0.0075*rdg (631~1112°F) |
| UT-T04 | -50~600°C (-58~1112°F) | Liquid, gel (food industry) | ±2℃ (-50~333℃) ±3.6°F (-58~631°F) ±0.0075*rdg (333~600℃) ±0.0075*rdg (631~1112°F) |
| UT-T05 | -50~900°C (-58~1652°F) | Air, gas | ±2℃(-50~333℃) ±3.6°F (-58~631°F) ±0.0075*rdg (333~900℃) ±0.0075*rdg (631~1652°F) |
| UT-T06 | -50~500°C (-58~932°F) | Solid surface | ±2℃ (-50~333℃) ±3.6°F (-58~631°F) ±0.0075*rdg (333~500°C) ±0.0075*rdg (631~932°F) |
| UT-T07 | -50~500°C (-58~932°F) | Solid surface | ±2℃ (-50~333℃) ±3.6°F (-58~631°F) ±0.0075*rdg (333~500°C) ±0.0075*rdg (631~932°F) |
Note: Only K-type thermocouple UT-T01 is included in this package. Please contact the supplier for more models if needed.
IX. Thermocouple specifications
| Model | Range | Scope of application | Accuracy |
|---|---|---|---|
| UT-T01 | -40~260°C (-40~500°F) | Regular solid | ±2°C (-40~260℃) ±3.6°F (-40~500°F) |
7. Battery replacement
Figure 4: Diagram illustrating battery replacement. Please replace the battery as shown in Figure 4.
CE [certification mark] UNI-T
UNI-TREND TECHNOLOGY (CHINA) CO., LTD.
No6, Gong Ye Bei 1st Road,
Songshan Lake National High-Tech Industrial Development Zone,
Dongguan City, Guangdong Province, China
Tel: (86-769) 8572 3888
http://www.uni-trend.com
