UT197 Industrial TRMS Digital Multimeter with Bluetooth

UNI-T UT197 Industrial Digital Multimeter

High-Precision Measurement with Ultimate Industrial Durability

The UNI-T UT197 is a high-precision true RMS handheld digital multimeter with exceptional 600,000-count display resolution. Engineered for extreme industrial environments, its IP67 protection and verified 5-meter (16.4 ft) drop resistance ensure reliable performance in the harshest conditions, while operating across an exceptional temperature range of -40°C to 55°C (-40°F to 131°F). With advanced features like VFD anti-interference mode, Bluetooth connectivity, and industry-leading CAT IV 1000V safety rating, this professional-grade meter delivers the precision and durability needed by maintenance technicians, industrial electricians, and field service personnel in power construction, equipment maintenance, petrochemical, HVAC, and laboratory applications.

Key Features

• 600,000-Count Display Resolution: Exceptional precision for detailed measurements
• IP67 Environmental Protection: Complete dust and water-resistant design for harsh industrial environments
• 5-Meter (16.4 ft) Drop Protection: Exceptional durability for extreme field conditions
• Extended Temperature Range: Operates in extreme environments from -40°C to 55°C (-40°F to 131°F)
• True RMS Measurement: Accurate readings on modern electronic loads and distorted waveforms
• VFD Anti-interference Mode: Filters carrier-frequency and distorted-voltage for stable inverter measurements
• Bluetooth Connectivity: Pairs with UNI-T SmartTest APP for data logging and analysis
• External Current Measurement: Optional UT-CS07 clamp for 1000A AC/DC current testing
• 12kV Pulse Impulse Protection: Superior protection against electrical surges
• Industry-Leading CAT IV 1000V Safety Rating: Maximum safety for industrial power environments, setting it apart from most competitors

Industrial-Grade Precision for Demanding Applications

The UNI-T UT197 delivers exceptional measurement accuracy with its 600,000-count display, providing the precision needed for detailed industrial diagnostics. With DC voltage accuracy of ±(0.03%+5) at 60000 counts and an impressive ±(0.015%+10) at 600000 counts, it offers laboratory-grade precision in a field-ready instrument. The True RMS measurement capabilities ensure accurate readings on modern electronic systems with non-sinusoidal waveforms, while the extended frequency response makes it ideal for evaluating variable frequency drives and modern power electronics.

The specialized VFD anti-interference mode filters out carrier-frequency and distorted-voltage interferences, ensuring stable and accurate readings when testing inverters and electronic motor drives. This capability is essential for industrial maintenance where variable frequency drives are increasingly common, making the UT197 particularly valuable for motor system diagnostics and power electronic troubleshooting.

Comprehensive Measurement Capabilities

The UT197 combines essential electrical measurements with specialized industrial functions to deliver complete diagnostic capabilities. Beyond standard voltage, current, resistance, and capacitance measurements, it offers:

• AC+DC current and voltage measurement for comprehensive power analysis
• Frequency measurement up to 1MHz with 0.002% accuracy
• Temperature measurement from -40°C to 1000°C (-40°F to 1832°F)
• Continuity and diode test with 3.0V test voltage
• Peak capture for analyzing transient events
• Auto/manual data hold for convenient reading capture
• High voltage warning alerts for enhanced safety
• Maximum/minimum value recording for monitoring variations

The optional UT-CS07 external current clamp extends measurement capabilities to 1000A AC/DC, making the UT197 suitable for heavy industrial load testing without interrupting circuits. This comprehensive measurement suite makes it the ideal tool for industrial professionals who need complete diagnostic capabilities in a single instrument.

Extreme Environmental Durability

The UNI-T UT197 sets a new standard for multimeter durability with features specifically designed for the harshest industrial environments:

• IP67 rated for complete protection against dust ingress and water immersion
• Verified 5-meter (16.4 ft) drop resistance for extreme mechanical shock protection
• Operational temperature range of -40°C to 55°C (-40°F to 131°F) for extreme environments
• 12kV pulse impulse protection against electrical surges
• Dual internal fuses for redundant circuit protection
• Mis-plug alarm to prevent incorrect terminal connections
• Rugged overmolded case for secure grip in all conditions

These durability features ensure the meter performs reliably in demanding environments including outdoor installations, mining operations, oil and gas facilities, and industrial manufacturing plants where environmental conditions would damage standard instruments.

Smart Connectivity and Data Logging

The integrated Bluetooth connectivity pairs with the UNI-T Smart Measure mobile application (available for both iOS and Android), allowing technicians to:

• Record measurement data remotely for trend analysis
• Generate real-time measurement charts
• Create professional testing reports
• Export data in multiple formats (PDF/XLS/JPEG/CSV)
• Document system performance over time

This connectivity transforms the UT197 from a simple measurement tool into a complete diagnostic system, enabling technicians to document system performance, share findings with team members, and maintain comprehensive maintenance records.

Professional Applications

Industrial Power Systems

Power engineers and technicians rely on the UT197's industry-leading safety rating and precision for:

• Distribution panel voltage verification
• Load balance analysis across three-phase systems
• Ground system integrity testing
• Circuit breaker testing and verification
• Power quality analysis with True RMS measurement

Motor Drive Systems

Motor maintenance specialists leverage the UT197's specialized features for:

• Variable frequency drive diagnostics using VFD mode
• Motor current draw measurement with external clamp
• Winding resistance testing with high precision
• Bearing temperature monitoring
• Control circuit signal verification

HVAC and Refrigeration

HVAC technicians depend on the UT197's durability and measurement range for:

• Compressor electrical diagnostics
• Temperature verification across system components
• Control circuit troubleshooting
• Capacitor testing and verification
• Environmental chamber validation

Renewable Energy Systems

Solar and wind system technicians utilize the UT197 for:

• Solar inverter performance verification
• PV array output measurement
• Battery system diagnostics
• Charge controller verification
• System grounding integrity testing

Technical Specifications

Additional Features

• Display Count: 600000 (DCV); 9999 (frequency)
• Display Type: Large LCD with backlight
• True RMS Measurement: Yes
• Non-Contact Voltage Detection: Yes
• Peak Capture: Yes (250μs bandwidth)
• Data Hold: Manual/Auto
• Maximum/Minimum Value: Yes
• High Voltage Alarm: Yes
• Auto Power Off: Approximately 15 minutes
• Bluetooth Communication: Yes
• Industry-Leading Safety Standards: CAT IV 1000V
• IP Protection Level: IP67
• Drop Test: 5m (16.4 ft)
• Operating Temperature: -40°C to 55°C (-40°F to 131°F)
• Power Supply: 9V battery
• Product Dimensions: 195 x 95 x 58mm (7.68 x 3.74 x 2.28 inches)
• Weight: 437g (15.4 oz)

Package Contents

• UNI-T UT197 Professional Digital Multimeter
• Test Probes
• 9V Battery
• User Manual
• Certificate of Calibration
• Carrying Case

Product Comparison

Frequently Asked Questions

How does the 600,000-count display improve measurement accuracy?

The UT197's 600,000-count display provides significantly higher resolution than standard multimeters, allowing technicians to see smaller changes in measurement values. This increased resolution is particularly valuable when measuring precision components, monitoring small signal variations, or performing comparative measurements where detecting slight differences is critical. For DC voltage measurements, this higher resolution combines with the exceptional base accuracy of ±(0.015%+10) to provide laboratory-grade precision in a field instrument.

What makes the CAT IV 1000V safety rating industry-leading?

The UT197's CAT IV 1000V rating represents the highest safety level available in handheld multimeters, providing protection when working with primary power distributions and overhead lines. While most competitors offer only CAT III ratings or limited CAT IV 600V ratings, the UT197 delivers comprehensive protection at the industry's highest level. This superior rating ensures technician safety when working in industrial power environments, utility service connections, and outdoor installations where transient overvoltages present significant hazards, setting the UT197 apart as one of the few meters on the market offering this level of protection.

What advantages does the VFD anti-interference mode provide in industrial applications?

The UT197's VFD (Variable Frequency Drive) anti-interference mode filters out carrier-frequency and distorted-voltage interferences that are common when testing modern electronic motor controls and power inverters. Without this filtering, standard multimeters often provide unstable readings when connected to VFDs due to the high-frequency switching noise present in these systems. This specialized mode allows maintenance technicians to obtain accurate voltage measurements on inverter outputs, motor terminals, and other points in VFD-controlled systems, enabling proper evaluation of system performance and troubleshooting of drive-related issues.

How does the Bluetooth connectivity enhance the UT197's capabilities?

The UT197's Bluetooth connectivity transforms the multimeter from a simple measurement tool into a complete diagnostic system by connecting with the UNI-T Smart Measure application. This connection enables technicians to record measurement data over time, creating graphs and trend analysis that reveal intermittent issues or performance degradation that single readings might miss. The ability to generate professional reports with measurement data, graphs, and system information streamlines documentation for maintenance records, client reports, and team collaboration. Additionally, the remote monitoring capability allows technicians to place the meter in difficult-to-access locations while viewing readings from a safe distance.

Why is the extended temperature range important for industrial applications?

The UT197's exceptional operating temperature range of -40°C to 55°C (-40°F to 131°F) ensures reliable performance in extreme environments where standard instruments would fail. This capability is critical for outdoor installation and maintenance in cold climates, hot industrial processes, refrigeration systems, and environmental testing facilities. By maintaining accuracy across this extended range, the UT197 eliminates the need for specialized equipment in extreme temperature environments, ensuring consistent measurements regardless of ambient conditions and allowing technicians to work confidently in any environment.

What is the warranty period for the UNI-T UT197?

UNI-T provides a 1-year warranty on the UT197, covering manufacturing defects and component failures under normal use conditions. This standard warranty ensures your investment in professional measurement equipment is protected, giving you confidence in your purchase decision.

Support and Warranty

UNI-T stands behind the UT197 with comprehensive technical support and a 1-year warranty. Our dedicated support team is available to assist with application questions, measurement techniques, and warranty service.

Industrial-Grade Measurement for Professional Technicians

The UNI-T UT197 Industrial Digital Multimeter delivers exceptional precision, durability, and specialized features for demanding industrial environments. With its 600,000-count display, 5-meter (16.4 ft) drop protection, IP67 rating, and industry-leading CAT IV 1000V safety rating, it provides reliable performance for maintenance professionals who need comprehensive diagnostic capabilities for today's complex industrial systems.

Order Your UNI-T UT197 Today and Experience Professional-Grade Industrial Measurement Capabilities