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mK Grade High - Precision Thermometer Readout

Product Features

mK grade precision thermometer

Resolution of 0.0001℃

Accuracy (at 0℃ for SPRT) of 5ppm

All solid state design, no bridge transformer and relay

Front panel quick connector design

Model Selection

DTMA-101G

DTMC-mK301-PRTG
DTMC-mK301G
DTHPA-mK301G

DTMC-2G
DTMC-4G
DTMC-6G
DTMC-8G

DTSW-1-AG
DTSW-1-BG
DTSW-LcG
DTSW-2G

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Description

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Introduction

The DTMC-mK301 is a new-generation, multi-channel, ultra-high-precision thermometer readout developed for temperature metrology and calibration. It integrates high-accuracy electrical measurement technology, intelligent interface design, and application-specific functions to fully meet the calibration needs of both laboratories and fieldwork. The DTMC-mK301 measures: standard and industrial RTDs, thermocouples, thermistors, temperature transmitters, humidity sensors, DC current, resistance, and voltage signals. It supports ITS-90 and IEC 60751 standards and features built-in thermophysical conversion tools, intelligent sensor management, and broad compatibility across industries such as power, petrochemical, metrology, metallurgy, biotechnology, pharmaceuticals, and scientific research.

Features / Advantages

mK-Grade Precision Thermometer Readout

· Resolution: 0.00001 °C

· Accuracy: 5 ppm @ 0 °C (using SPRT)

Channels & Sensor Support

· 3 input channels: CH1 and CH2 (front), CH3 (rear)

· Supports 2 standard platinum resistance thermometers (SPRT), 2 standard thermocouples

· Supports RTDs: Pt (Pt25, Pt100, PtX), Cu (CuX), and Ni (NiX)

· Supports thermocouples: K, N, J, E, T, R, S, B, WRe3, WRe5

· Supports thermistors: 0 kΩ to 40 kΩ

· Supports temperature transmitters: 0 mA to 20 mA / 4 mA to 20 mA

· Automatic current reversal for RTD input to eliminate EMF thermal voltage error

Thermocouple Cold Junction Compensation

· Multiple compensation modes supported: internal compensation, external compensation, fixed compensation

Multiple Conversion Algorithms Supported

· ITS-90, Callendar-Van Dusen, IEC 60751:2008, polynomial equations, Steinhart–Hart, B-Value, linear conversion

Sensor Management Features

· Supports management of up to 100 sensor profiles

· Editable sensor parameters improve measurement accuracy

Smart Sensor Capability

· Automatic detection and data upload when a smart sensor is connected

Smart Terminal Box Support

· Stores and auto-uploads SPRT certificate values

· Plug-and-play operation; no need to manually input certificate data

User Interface & Display Modes

· Five display modes: single-channel, dual-channel, triple-channel, curve display, table display

· Real-time display of sensor information, measurement data, and trends

· Automatic statistical analysis: max, min, average, peak-to-peak, standard deviation, stability, etc.

· Real-time curve plotting

· 7-inch high-resolution capacitive touchscreen

Thermophysical Calculator

· Built-in thermophysical calculator

· Integrated ITS-90 fixed-point reference data

Data Logging & Storage

· Timestamped data recording

· 8 GB internal storage; external USB drive supported

· SCPI communication protocol over RS232/WLAN

· Screenshot feature available on all display screens, no need for manual data recording

Product Selection Sheet

Model	DTMC-mK301G-PRT	DTMC-mK301G	DTMC-mK301HG	DTHPA-mK301G
Multi-channel temperature meter	●	●	●	●
DC multimeter			●	●
Sensor testing		●	●	●
SPRT 25 Measurement	●	●	●	●
SPRT 100 Measurement	●	●	●	●
RTD	●	●	●
RTC Measurement		●	●	●
TC Measurement		●	●	●
Transmitter	●	●	●	●
Thermistor Measurement	●	●	●	●
Constant temperature source test	●	●	●	●
Temperature switch test		●	●
Electronic scanning switch	●	●	●	●
Smart Sensor (Optional)	●	●	●
Smart Terminal Box (Optional)	●	●	●
Thermal Calculator	●	●	●	●
Sensor Management	●	●	●	●
Data Storage	●	●	●	●
Intelligent Communication	●	●	●	●

Technical Parameters

Function	Type	Description
Channels	3	CH1 & CH2 (front),CH3(rear).External 8-Channel Electronic Scanning Switch (Optional)
Input	CH1/CH2	TC/RTD
Input	CH3	Current
Input Connectors	Thermal resistor (front panel)	Lemo EPG.1B.306.HLN 6-pin connector
	Thermal resistor (rear panel)	4mm Low-thermal posts
	TC	Mini TC Connectors(ASTM E 1684-05)
Drive current	SPRT/PRT	1mA(±0.1%)(Auto-reversing)
Cold Junction Compensation(CJC)	/	Built-in cold junction compensation External Cold Junction Compensation (CJC) CH1 and CH2 can be CJC to each other User-defined cold junction temperature.
Cold junction compensation accuracy	/	±0.1℃
Smart Sensors	SPRT/PRT	Support
Sensors Management Quantity	/	100 Pcs
Sensor Management	Conversion formula	ITS-90 IEC60751(2008), Callendar-van Dusen Steinhart-Hart, polynomial B Value Multinomial
Sensor support	RTD	SPRT Pt25/Pt100 PRT: Pt100/Pt1000/Pt-X Copper resistor: Cu50/Cu100/Cu-X Nickel resistor:Ni50/Ni120/Ni1000 Thermistor:(0-40K)
	TC	Standard Thermocouple: B/S Industrial Thermocouples: K/N/J/E/T/R/S/B/WRe3/WRe5
	Transmitter	Temperature transmitter:(0-20mA/4-20mA)

Application Accessory

Overview:

The Automatic test of the DTMC-mK301-WK electronic scanning switch is mainly used for switching and collecting the signals of thermal resistance and thermocouple temperature sensors.

It is suitable for industrial scenarios that require batch multi-point temperature measurement. With its excellent performance and unique functions, the DTMC-mK301-WK scanning switch device provides an efficient and accurate solution for the rapid switching and data reading of multi-channel temperature signals.

It can achieve the manual/ Automatic switching and data reading of multi-channel and multi-type temperature signals. When used in conjunction with the mK301 high-precision thermometer, the electrical measurement and temperature data of the channels can be viewed in real time and synchronously displayed on the touch screen interface of the thermometer.

Automatic Test System for Thermal Resistance:

DTMC-mK301G-WK electronic scanning switch device is deeply integrated with the mK301G high-precision thermometer, and together with the standard device and the constant temperature source, it forms a complete two/three/four-wire resistance measurement system. This system supports flexible manual/Automatic dual-mode operation, adapting to the needs of different detection scenarios; it synchronously displays the resistance electrical measurement value and the corresponding temperature value in real time, and completes accurate conversion through the built-in algorithm. All data are directly presented on the main interface of the mK301G, achieving efficient processing of the whole process from signal collection to result analysis.

Automatic Test System for Thermocouple:

DTMC-mK301G-WK scanning switch device is deeply integrated with the mK301G high-precision thermometer, and together with the standard device, the constant temperature source, the reference junction thermostat and the Pt100 sensor, it forms a complete thermocouple measurement and calibration system. This system supports the signal detection of the full series of S/R/B/K/N/J/E/T/We3/We5 type thermocouples, can Automatically complete the real-time conversion of the electrical measurement value/temperature value, and synchronously display it on the main interface of the mK301G, realizing the Automatic processing of the whole process from signal collection to result output, and ensuring the requirements for high-precision and multi-type temperature measurement.

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