# HT Italia HT63 CAT IV 60000-Count TRMS Multimeter # HT Italia HT63 CAT IV 60000-Count TRMS Multimeter ## Key Features At A Glance - CAT IV 600V / CAT III 1000V measurement category with double insulation per IEC/EN61010-1 - 60000-count TRMS display with dual 3½-digit (6000) and 4½-digit (60000) resolution, bargraph, and backlight - TRMS measurement of AC, DC, and AC+DC voltage and current - Low-impedance LoZ mode (~3kΩ input) for AC/DC voltage measurement - AC/DC current measurement with transducer clamps up to 3000A - Type K thermocouple temperature measurement from -40°C to 760°C - Capacitance to 6mF, frequency to 10MHz, resistance to 60MΩ - DC 4-20mA% loop readings plus PEAK, MAX/MIN, REL, and Data/Auto HOLD functions The HT63 is a CAT IV 60000-count true-RMS (TRMS) digital multimeter manufactured by HT Instruments (HT Italia SRL). It pairs a dual-resolution LCD — 3½-digit at 6000 counts and 4½-digit at 60000 counts — with a bargraph, backlight, automatic polarity indication, and an "OL" over-range indication, and applies TRMS conversion across its AC measurement functions. A digital multimeter is the most universal instrument on an electrical or electronics bench, consolidating voltage, current, resistance, and a range of derived measurements into a single handheld unit. A true-RMS meter measures the actual heating value of an AC signal, which keeps readings accurate on the distorted, non-sinusoidal waveforms common in modern electrical systems. ValueTronics stocks and holds its own inventory in a 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. ## Product Core & Specifications Specification Value General Accuracy Conditions Accuracy formula \[reading + (num dgt × resolution)\] at ta 18°C–28°C, <75% RH HIRES feature Accuracy specified with HIRES not active; with HIRES active, multiply ×10 the dgts of the accuracy DC Voltage (Input impedance >10 MΩ; Overload protection 1000 V DC/AC rms) 600.0 mV Resolution 0.1 mV; Accuracy (0.9%rdg + 5dgt) 6.000 V Resolution 0.001 V; Accuracy (0.9%rdg + 5dgt) 60.00 V Resolution 0.01 V; Accuracy (0.9%rdg + 5dgt) 600.0 V Resolution 0.1 V; Accuracy (0.9%rdg + 5dgt) 1000 V Resolution 1 V; Accuracy (1.2%rdg + 5dgt) AC TRMS Voltage (Input impedance >10 MΩ; Overload protection 1000 V DC/AC rms) 600.0 mV Resolution 0.1 mV; Accuracy (1.0%rdg + 5dgt) \[50 Hz–1 kHz\], (3.0%rdg + 5dgt) \[1 kHz–5 kHz\] 6.000 V Resolution 0.001 V; Accuracy (1.0%rdg + 5dgt) \[50 Hz–1 kHz\], (3.0%rdg + 5dgt) \[1 kHz–5 kHz\] 60.00 V Resolution 0.01 V; Accuracy (1.0%rdg + 5dgt) \[50 Hz–1 kHz\], (3.0%rdg + 5dgt) \[1 kHz–5 kHz\] 600.0 V Resolution 0.1 V; Accuracy (1.0%rdg + 5dgt) \[50 Hz–1 kHz\], (3.0%rdg + 5dgt) \[1 kHz–5 kHz\] 1000 V Resolution 1 V; Accuracy (1.0%rdg + 5dgt) \[50 Hz–1 kHz\], Not specified \[1 kHz–5 kHz\] AC Voltage notes Accuracy specified from 5% to 100% of the measuring range and crest factor ≤3. PEAK function accuracy (10%rdg + 30dgt), response time 1 ms. dBV function accuracy (1.5%rdg + 5dgt) (f≤60 Hz), (3.0%rdg + 5dgt) (60 Hz–1 kHz), not specified (1–5 kHz). For non-sinusoidal waveforms: (4.5%rdg + 10dgt) (50 Hz–1 kHz), (10.0%rdg + 10dgt) (1 kHz–5 kHz) AC+DC TRMS Voltage (50 Hz–1 kHz; Input impedance >10 MΩ; Overload protection 1000 V DC/AC rms) 600.0 mV Resolution 0.1 mV; Accuracy (1.5%rdg + 10dgt) 6.000 V Resolution 0.001 V; Accuracy (1.5%rdg + 10dgt) 60.00 V Resolution 0.01 V; Accuracy (1.5%rdg + 10dgt) 600.0 V Resolution 0.1 V; Accuracy (1.5%rdg + 10dgt) 1000 V Resolution 1 V; Accuracy (1.5%rdg + 10dgt) DC/AC TRMS Voltage with Low Impedance (LoZ) (Input impedance approx 3 kΩ; Overload protection 1000 V DC/AC rms) 6.000 V Resolution 0.001 V; Accuracy (3.0%rdg + 40dgt) 60.00 V Resolution 0.01 V; Accuracy (3.0%rdg + 40dgt) 600.0 V Resolution 0.1 V; Accuracy (3.0%rdg + 40dgt) 1000 V Resolution 1 V; Accuracy (3.0%rdg + 40dgt) LoZ note AC+DC accuracy: (3.5%rdg + 40dgt) Diode Test Max test current <1.5 mA Open voltage 2.8 V 4-20 mA % Readings Range \-25% to 125% Resolution 0.1% Accuracy 50dgt Scaling 0 mA = -25%, 4 mA = 0%, 20 mA = 100%, 24 mA = 125% DC Current (Overload protection: Fast Fuse 0.8 A/1 kVAC/DC on inputs mA, µA; Fast Fuse 10 A/1 kVAC/DC on 10 A input) 600.0 µA Resolution 0.1 µA; Accuracy (1.5%rdg + 5dgt) 6000 µA Resolution 1 µA; Accuracy (1.5%rdg + 5dgt) 60.00 mA Resolution 0.01 mA; Accuracy (1.5%rdg + 5dgt) 600.0 mA Resolution 0.1 mA; Accuracy (1.5%rdg + 5dgt) 10.00 A Resolution 0.01 A; Accuracy (1.5%rdg + 5dgt) AC TRMS Current (Overload protection: Fast Fuse 0.8 A/1 kVAC/DC on inputs mA, µA; Fast Fuse 10 A/1 kVAC/DC on 10 A input) 600.0 µA Resolution 0.1 µA; Accuracy (2.5%rdg + 5dgt) \[50 Hz–1 kHz\], (3.5%rdg + 5dgt) \[1 kHz–5 kHz\] 6000 µA Resolution 1 µA; Accuracy (2.5%rdg + 5dgt) \[50 Hz–1 kHz\], (3.5%rdg + 5dgt) \[1 kHz–5 kHz\] 60.00 mA Resolution 0.01 mA; Accuracy (2.5%rdg + 5dgt) \[50 Hz–1 kHz\], (3.5%rdg + 5dgt) \[1 kHz–5 kHz\] 600.0 mA Resolution 0.1 mA; Accuracy (2.5%rdg + 5dgt) \[50 Hz–1 kHz\], (3.5%rdg + 5dgt) \[1 kHz–5 kHz\] 10.00 A Resolution 0.01 A; Accuracy (2.5%rdg + 5dgt) \[50 Hz–1 kHz\], (3.5%rdg + 5dgt) \[1 kHz–5 kHz\] AC Current notes Accuracy specified from 5% to 100% of the measuring range. PEAK function accuracy (10%rdg + 30dgt). AC+DC accuracy: (2.8%rdg + 5dgt) (50 Hz–1 kHz). For non-sinusoidal waveforms: (4.5%rdg + 10dgt) (50 Hz–1 kHz), (10.0%rdg + 10dgt) (1 kHz–5 kHz) DC Current with Transducer Clamps (Accuracy referred to instrument only, without transducer clamp; Overload protection 1000 V DC/AC rms) 1000 mA Output ratio 1000 mV/1000 mA; Resolution 1 mA; Accuracy (1.5%rdg + 6dgt) 10 A / 30 A Output ratio 100 mV/1 A; Resolution 0.01 A 40 A Output ratio 10 mV/1 A; Accuracy (1.5%rdg + 26dgt) 100 A Resolution 0.1 A; Accuracy (1.5%rdg + 6dgt) 300 A / 400 A Output ratio 1 mV/1 A; Resolution 1 A; Accuracy (1.5%rdg + 26dgt) 1000 A Accuracy (1.5%rdg + 6dgt) AC TRMS Current with Transducer Clamps (Accuracy referred to instrument only, without transducer clamp; Overload protection 1000 V DC/AC rms) 1000 mA Output ratio 1000 mV/1000 mA; Resolution 1 mA; Accuracy (2.5%rdg + 10dgt) 10 A / 30 A Output ratio 100 mV/1 A; Resolution 0.01 A 40 A Output ratio 10 mV/1 A; Accuracy (3.5%rdg + 30dgt) 100 A Resolution 0.1 A; Accuracy (2.5%rdg + 10dgt) 300 A / 400 A Output ratio 1 mV/1 A; Resolution 1 A; Accuracy (3.5%rdg + 30dgt) 1000 A Accuracy (2.5%rdg + 10dgt) 3000 A Output ratio 1 mV/1 A; Resolution 1 A AC Clamp notes Accuracy specified from 5% to 100% of the measuring range. For pulse waveforms: (10.0%rdg + 10dgt). PEAK function accuracy (10%rdg + 30dgt). AC+DC TRMS current accuracy (50 Hz–1 kHz): (3.0%rdg + 10dgt). For non-sinusoidal waveforms: (4.5%rdg + 10dgt) (50 Hz–1 kHz) Resistance and Continuity Test (Overload protection 1000 V DC/AC rms) 600.0 Ω Resolution 0.1 Ω; Accuracy (2.0%rdg + 9dgt); Buzzer <35 Ω 6.000 kΩ Resolution 0.001 kΩ; Accuracy (1.2%rdg + 5dgt) 60.00 kΩ Resolution 0.01 kΩ; Accuracy (1.2%rdg + 5dgt) 600.0 kΩ Resolution 0.1 kΩ; Accuracy (1.2%rdg + 5dgt) 6.000 MΩ Resolution 0.001 MΩ; Accuracy (2.0%rdg + 10dgt) 60.00 MΩ Resolution 0.01 MΩ; Accuracy (2.0%rdg + 10dgt) Frequency (Electrical circuits) (Overload protection 1000 V DC/AC rms) 40.00 Hz – 10.00 kHz Resolution 0.01 Hz; Accuracy (0.5%rdg); Sensitivity 15 Vrms Frequency (Electronic circuits) (Sensitivity >2.0 Vrms min for <100 kHz, 5 Vrms min for >100 kHz, 20% < duty < 80%; Overload protection 1000 V DC/AC rms) 60.000 Hz Resolution 0.001 Hz; Accuracy (1.0%rdg + 2dgt) 600.00 Hz Resolution 0.01 Hz; Accuracy (1.0%rdg + 2dgt) 6.0000 kHz Resolution 0.0001 kHz; Accuracy (1.0%rdg + 2dgt) 60.000 kHz Resolution 0.001 kHz; Accuracy (1.0%rdg + 2dgt) 600.00 kHz Resolution 0.01 kHz; Accuracy (1.0%rdg + 2dgt) 6.0000 MHz Resolution 0.0001 MHz; Accuracy (1.0%rdg + 2dgt) 10.000 MHz Resolution 0.001 MHz; Accuracy (1.0%rdg + 2dgt) Duty Cycle (Overload protection 1000 V DC/AC rms) 0.1 – 99.9% Resolution 0.01%; Accuracy (1.2%rdg + 2dgt); Pulse width 100 µs – 100 ms; Frequency 5 Hz – 100 kHz Capacitance (Overload protection 1000 V DC/AC rms) 60.00 nF Resolution 0.01 nF; Accuracy (3.5%rdg + 10dgt) 600.0 nF Resolution 0.1 nF; Accuracy (3.5%rdg + 10dgt) 6.000 µF Resolution 0.001 µF; Accuracy (2.5%rdg + 10dgt) 60.00 µF Resolution 0.01 µF; Accuracy (2.5%rdg + 10dgt) 600.0 µF Resolution 0.1 µF; Accuracy (2.5%rdg + 10dgt) 6.000 mF Resolution 0.001 mF; Accuracy (3.5%rdg + 10dgt) Temperature with Type K Probe (Accuracy referred to instrument without probe; Overload protection 1000 V DC/AC rms) \-40.0 °C ÷ 600.0 °C Resolution 0.1 °C; Accuracy (2.0%rdg + 3°C) 600 °C ÷ 760 °C Resolution 1 °C; Accuracy (2.0%rdg + 3°C) \-58.0 °F ÷ 600.0 °F Resolution 0.1 °F; Accuracy (2.0%rdg + 5.5°F) 600 °F ÷ 1400 °F Resolution 1 °F; Accuracy (2.0%rdg + 5.5°F) General Specifications Display LCD, 3½ dgt (6000 counts) and 4½ dgt (60000 counts), decimal point and bargraph Polarity Automatic polarity indication > **Important:** Current inputs are protected by fast fuses rated 0.8 A/1kV AC/DC (mA and µA inputs) and 10 A/1kV AC/DC (10 A input). ## About this New unit This is a brand-new, factory-sealed unit, supplied exactly as it arrives from the manufacturer and backed by the full manufacturer warranty. For the exact configuration, available options, included accessories, or current lead time for your application, our Test Architects can confirm the details before you order. ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 299.0 USD - **Vendor:** HT Italia - **Type:** Multi Met - **Tags:** HT Instruments, Manufacturers, Meters & DAQ, Multimeter, product_manual_group_3, Product_new ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 299.00 USD | In stock | ## Images - HT Italia HT63 CAT IV 60000-Count TRMS Multimeter --- > Source: [ValueTronics](https://valuetronics.com/products/ht63-ht-instruments-multimeter-new) > Updated: 2026-06-20