The microK² builds on the success of the original microK models that were quickly adopted by the world's leading National Metrology Institutes and commercial laboratories. Retaining Isotech's innovative technology and operating mode to achieve accuracies as low as 7.5 μK, microK² remains first choice to measure with SPRTs and supports all standard thermometer types including Standard Thermocouples, Industrial PRTs and Thermistors.

Accuracy and Stability: Superior resistance ratio accuracy and zero drift to ensure long-term stability
Trusted by NMIs: Widely recognised by leading NMIs with independent reports validating its exceptional performance
Second Generation: Improved performance with new features and a 10.1-inch high-resolution touchscreen for clear visualisation of measurements and data

DESCRIPTION

The microK² builds on the success of the original microK models that were quickly adopted by the world’s leading National Metrology Institutes and commercial laboratories. Retaining Isotech’s innovative technology and operating mode to achieve accuracies as low as 7.5 μK, microK² remains first choice to measure with SPRTs and supports all standard thermometer types including Standard Thermocouples, Industrial PRTs and Thermistors.

New: The microK² introduces several new features designed to enhance usability, accuracy, and versatility. A notable addition is the new fourth channel, which accepts SPRTs, reference resistors, or the channel expander, offering greater flexibility in measurement systems. The touchscreen has been upgraded to a 10.1-inch high-resolution display with improved capacitive touch technology, ensuring a more responsive and intuitive user interface, input terminals are now more robust and easier to use. Enhanced connectivity options now include Ethernet, two RS232 serial ports, and three USB ports, with new software features.

Performance by Design – Inherently Drift-Free: The microK was developed with a clear design philosophy: to ensure genuine, long-term performance without relying on “tweak pots,” software adjustments, or self-calibration. This innovative approach has resulted in a resistance ratio accuracy that is uniquely drift-free, ensuring unparalleled accuracy and stability.

As a ratio bridge, the microK leverages a substitution topology that inherently eliminates drift. With no need for compensation circuits, software offsets, or routine calibration, the microK maintains its performance without requiring adjustments or service interventions, delivering consistent, reliable measurements year after year, thereby reducing operating costs.

Since its introduction in 2006, the microK has been rigorously studied and validated by temperature metrologists worldwide, confirming its superior performance and reliability.

SPECIFICATION

Parameter	Model
	microK²
Temperature Range*	-200°C to 1800°C
microK² ELITE
Accuracy, Whole Range	30 ppb
Equivalent Temperature Accuracy Whole Range	30 μK
Equivalent Temperature Accuracy Water Triple Point	7.5 μK
microK² 60
Accuracy, Whole Range	60 ppb
Equivalent Temperature Accuracy Whole Range	60 μK
Equivalent Temperature Accuracy Water Triple Point	15 μK
COMMON Specifications
Weight	13.2kg
Resolution, Temperature	0.001 mK 0.000001°C
Input Channels NEW	Four – three front and one rear
Ratio Range	Unlimited
Ratio Accuracy Stability	Zero Drift
Ratio Accuracy Temperature Coefficient	Zero
Resistance Range	0 – 500 kΩ
Keep Warm Current	Each Channel Individually Programmable
Voltage Range (thermocouple)	125mV
Voltage Accuracy 0 – 20 mV	0.15 μV Equivalent to 0.006°C for a Platinum / Gold thermocouple at 1000°C
Resolution Voltage	10nV
Cold Junction Mode	External and Remote with PRT
Sensor Current NEW	Each Channel Adjustable 0 – 14.2 mA
Cable Length	Limited to 10Ω per core and 10nF shunt capacitance (equivalent to 100m of RG58 coaxial cable)
Temperature Conversions NEW	PRTs: ITS-90, Callendar-van Dusen. Thermocouples: IEC 60584-1 Ed. 3.0 2013 (B, E, J, K, N, R, S, T), L, Pt/Pd and Au/Pt, Thermistors: Steinhart-Hart, Polynomial
Internal Resistance Standards	25, 100, 400Ω
Optional Internal Values	1, 10, 10KΩ
Internal Standard Resistor Stability	TCR < 0.5 ppm/°C and stability < 2 ppm/year
Input Connectors	Upgraded: Gold Plated 4mm binding posts for plugs, spades or bare wires, material tellurium-copper alloy for low thermal EMF
Interfaces	Ethernet, 3 x USB Host, 2 x RS232, IEEE
Store Calibration Coefficients	Unlimited
Datalogger	32 GB Storage
Expandable NEW	Add up to 90 expansion channels
Switching Technology	Solid State
Units	Ratio, V, Ω, °C, °F, K
Display	10.1-inch high-resolution touchscreen with anti glare treatment
Operating Conditions	Full Specification: 15 – 30°C 10 – 80% RH Operational: 0 – 40°C 0 – 95% RH
Power	85 – 264 Vac 50/60 Hz 20 watts maximum
Dimensions	539mm x 200mm x 300mm (19″ Rack Mountable)

microK² 精密測溫電橋型錄

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