This product is a full-range temperature metrology and calibration platform integrating high-precision electrical measurement, intelligent temperature-field control and fully automated workflows. It is specially designed for the automatic verification and calibration of temperature sensors, transmitters and temperature switches. By deeply integrating the constant-temperature field generation unit and high-precision electrical measurement unit, it eliminates additional errors caused by the combination of multiple separate devices at the system level. It delivers a highly reliable and high efficiency all-in-one calibration solution for metrology laboratories and industrial production sites.

Product characteristics

Full-Category Sensor Compatibility
Standard Input: Independent channel;supports 1st/2nd grade SPRTs (Pt25/Pt100), smart sensors (RTD/SMP), and S/R/B/T TCs. Temp control and reference measurement run independently.
DUT Coverage: RTDs (Pt/Cu), TCs (S/R/B/K/N/E/J/T), Transmitters(Voltage, current), Temp Switches, Oil/Winding Controllers, Pressure/Dual-metal Thermometers.

Lifecycle Mgmt
Full CRUD functions. Auto formula matching for SPRT/RTC. Plug-and-play with auto-import & highlighting.

Integrated Core Hardware
High-Precision Electrical Measurement: 6½/7½ digit (optional) for Ω, DCV, DCI. Resolution down to 0.0000001℃.
Deep Integration: Hardware + algorithm fusion (not simple stacking) eliminates multi-device errors.
4-Wire RTD Reversal: Separates excitation & high-impedance detection to eliminate lead/contact resistance.
Patented CJC: Independent high-precision cold junction sensor with multi-point monitoring & smart compensation.
Basic Capabilities: Gain/zero calibration, filtering, one-click zeroing, customizable standard criteria.

Fully Automated Workflow
Visual Task Config: One-click multi-point self-correction. Parallel DUTs (up to 8). Switch testing (up to 6) with custom ramp rates. Auto tolerance matching based on accuracy class.
Real-time Monitoring: Live data, progress, countdown, and 10-min fluctuation graphs. Auto-highlight for out-of-tolerance.
Programmatic Data Processing: Built-in JJG algorithms (229/141/351/630). Auto-calculates errors, judges compliance, and exports traceable raw data.

Intelligent Control & Acquisition
Programmable Ramp: Multi-point programming with auto rate control.
Adaptive PID: Auto-tuning based on load/media for optimal control.
Procedure-level Stability: Triggers data acquisition only when strictly meeting regulation criteria.
Multi-Channel Sync: Auto scans all channels, syncs bath/DUT data, and averages forward/reverse readings.

Data Management & Security
Massive Storage: 8GB capacity for 100,000+ records; multi-condition search.
Backup & Recovery: Custom auto-backup cycles; full or single-record recovery.
Security & Continuity: Tiered access control, anti-tamper logs, and auto-resume after power outage.
Remote Diagnostics: Full operation logs exportable for remote troubleshooting.

HMI & Expansion
Display: 5/7-inch HD touchscreen with intuitive GUI.
Connectivity: RS232/RS485, WiFi, LAN, USB for data export.
Sustainable Upgrade: USB firmware updates for ongoing compliance and feature upgrades.

Electronic Measurement Specification

Channel	Measurement	Type	Specification
Standard Channel	SPRT Measurement	Measurement Method	4-wire RTD sectional transverse measurement
		Standard Type	Pt25, Pt100, Smart sensors (RTD/SMP, etc.)
		Measurement Range	0~400Ω / -196℃ ~ 850℃
		Accuracy	±0.002℃ @(0~50)Ω, ±40ppm reading @(50~400)Ω
		Resolution	0.001 mΩ
Inspection Channel	RTD Measurement	Measurement Type	2-wire / 3-wire / 4-wire
		RTD Type	Pt50, Pt100, PtX, CVD, IEC60751, Nickel, SMP
		Measurement Range	0~400Ω / -200℃ ~ 850℃
		Resolution	0.001 mΩ
Inspection Channel	TC Measurement	TC Type	K, N, T, J, E, R, S, B, WRe3, WRe5
		Measurement Range	-100 mV ~ 100 mV
		Accuracy	±(0.02%RD + 5μV)
		Resolution	0.001 μV
		Built-in Cold Junction	±0.35℃ (0~50℃)
	DCI Measurement	Measurement Range	0~20 mA
		Accuracy	±(0.02%RD + 2μA)
		Resolution	1 nA
	DCV Measurement	Measurement Range	0~10V
		Accuracy	±(0.02%RD + 2mV)
		Resolution	1 μV
		Input Impedance	> 1 MΩ
	Loop Power Supply	DC24V	Max. load 60mA
	Temperature Switch	Passive switch	Temperature switch, surface/winding adapter, pressure-type thermometer, bimetal thermometer

Temperature Specification

Channel	Class	Range	Accuracy
Standard	SPRT	-189 ℃ ~ 660 ℃	0.0184 ℃ @ -200 ℃
			0.0198 ℃ @ 0 ℃
			0.0204 ℃ @ 100 ℃
			0.0211 ℃ @ 200 ℃
			0.0237 ℃ @ 300 ℃
			0.0389 ℃ @ 600 ℃
			0.0422 ℃ @ 660 ℃
DUT	RTD	-200 ℃ ~ 850 ℃	-0.0046 ℃ @ -200 ℃
			-0.0119 ℃ @ -100 ℃
			0.0205 ℃ @ 0 ℃
			0.0476 ℃ @ 300 ℃
			0.0781 ℃ @ 600 ℃
	S/R	-50 ℃ ~ 1768 ℃	0.9228 ℃ @ 0 ℃
			0.5959 ℃ @ 300 ℃
			0.5947 ℃ @ 600 ℃
			0.5970 ℃@ 1000 ℃
	B	300 ℃ ~ 1820 ℃	0.6510 ℃ @ 1000 ℃
			0.6180 ℃ @ 1200 ℃
			0.6740 ℃ @ 1800 ℃
	K	200 ℃ ~ 1372 ℃	0.1933 ℃ @ 300 ℃
			0.2395 ℃ @ 600 ℃
			0.3170 ℃ @ 1000 ℃
	N	-200 ℃ ~ 1300 ℃	0.1849 ℃ @ 300 ℃
			0.2323 ℃ @ 600 ℃
			0.3250℃ @ 1000 ℃
	J	-210 ℃ ~ 1200 ℃	0.1432 ℃ @ 300 ℃
			0.2050 ℃ @ 600 ℃
			0.2950 ℃ @ 1000 ℃
	E	-200 ℃ ~ 1000 ℃	0.1147 ℃ @ 300 ℃
			0.1728 ℃@ 600 ℃
			0.2860 ℃ @ 1000 ℃
	T	-200 ℃ ~ 400 ℃	0.2821 ℃ @ -200 ℃
			0.1222 ℃ @ 400 ℃

Technical parameters

Product Name	Smart Heating Calibration Oil Bath	Smart Rapid Heating and Cooling Circulator Calibration Oil Bath
Model	DTS-MU300G	DTS-MUT300G
Temp. Range	70 to 300 ℃
Media	L30-300
Radial Uniformity	≤0.01℃
Axial Uniformity	≤0.01℃
Stability	±0.007℃/10min
Working Area	ф150×480(mm)
Volume	23L
Max Power	3kW	3kW
External Dimensions	660×540×1120（mm）
Cooling Down Time	normal speed	300°C to 100°C@ 15min
Ramp-up Time	RT to 100°C @ 30min；20°C to 65°C@ 15min

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