DT 305S Thermometer K-Type

A) Product Overview

The Metrix Plus DT 305 S is a handheld K type thermocouple digital thermometer built for accurate and fast temperature checks in industrial and laboratory environments. It features a high visibility 19999 count display and provides stable readings with 0.1 degree resolution in both Celsius and Fahrenheit. The meter supports data storage and recall for up to 100 sets, making it useful for recording temperature checks during maintenance, inspection, and validation work.

The instrument supports two probe options based on application temperature range. The standard TP 01 probe measures from minus 50 to 250 degree C for routine measurement tasks. For high temperature applications, an optional TP 03 probe extends measurement capability from minus 50 to 1300 degree C. The thermometer includes high and low temperature alarms for quick pass fail checks and an auto power off function to conserve battery. It operates on two LR03 AAA batteries and is compact and lightweight for daily field use.

B) Working Principle

The DT 305 S measures temperature using a K type thermocouple and converts the sensor signal into a temperature reading shown on the display.

1. Thermocouple sensing: The K type thermocouple probe produces a small voltage that changes with temperature.

2. Signal measurement: The instrument reads this voltage and converts it into a temperature value using internal measurement circuitry.

3. Digital conversion and display: The measured value is processed and shown on the 19999 count display with 0.1 degree resolution.

4. Sampling: The meter updates readings at a sampling rate of 2.5 times per second for quick response.

5. Alarms and logging: High and low alarm limits can be used for threshold checking, and readings can be stored and recalled from the 100 set memory.

Note: Your provided text mentions electrode voltage and current based on resistance change. The DT 305 S uses a K type thermocouple, which is a voltage based temperature sensor. The description above follows the K type thermocouple operation while staying consistent with the stated thermocouple type.

C) Why It Is Used

This thermometer is used when quick, repeatable temperature measurement is required with a portable handheld meter that supports thermocouple probes and basic logging features.

Common reasons to use DT 305 S include:

• Routine temperature checks in maintenance and troubleshooting work

• HVAC temperature testing on ducts, pipes, coils, and outlets

• Industrial process temperature spot checks where K type probes are common

• Laboratory testing where a compact meter is needed for fast validation

• Quality checks where high and low alarm limits support quick acceptance decisions

• High temperature measurements when used with the optional TP 03 probe up to 1300 degree C

D) Suitable Buyers

The Metrix Plus DT 305 S is suitable for users who need a K type thermocouple thermometer with a high count display, memory, and alarm functions.

Suitable buyers include:

• HVAC technicians performing temperature diagnostics and verification

• Maintenance engineers checking machine and process temperatures

• Quality inspection teams performing routine temperature verification

• Laboratory staff performing spot checks and test measurements

• Calibration and service teams needing a portable thermocouple meter

• Industrial users who need an optional high temperature probe capability up to 1300 degree C

FAQ

Q1: What type of thermocouple does the DT 305 S support?
It supports a K type thermocouple.

Q2: What is the measuring range with the standard probe?
With the TP 01 standard probe, the range is minus 50 to 250 degree C.

Q3: Can it measure higher temperatures?
Yes. With the optional TP 03 probe, the range is minus 50 to 1300 degree C.

Q4: What accuracy does the DT 305 S provide?
Accuracy is plus or minus 0.5 percent plus 1 degree C, and plus or minus 0.5 percent plus 2 degree Fahrenheit.

Q5: What is the resolution of the display?
Resolution is 0.1 degree C and 0.1 degree Fahrenheit.

Q6: What does 19999 counts mean?
It refers to the maximum display count, which supports finer reading presentation before the display ranges change.

Q7: Does it have data storage and recall?
Yes. It can store and recall up to 100 sets of readings.

Q8: Does it support temperature alarms?
Yes. It has high and low temperature alarm functionality.

Q9: How fast does it update readings?
Sampling rate is 2.5 times per second.

Q10: What batteries does it use?
It uses two 1.5V LR03 AAA batteries.

Q11: What is included in the standard accessories?
Thermometer, TP 01 probe, batteries, technical manual, and gift box packing.

Q12: Can I switch between Celsius and Fahrenheit?
Yes. It supports Celsius to Fahrenheit conversion.