# HT Italia HT322 CAT IV Digital Multimeter with Temperature Measurements # HT Italia HT322 CAT IV Digital Multimeter with Temperature Measurements ## Key Features At A Glance - Rated to CAT IV 600V / CAT III 1000V per EN 61010-1, with double-insulation construction - Type K thermocouple temperature measurement from -40°C to 800°C (also °F scale) - DC voltage 200 mV to 600 V with ±(0.8%rdg+1dgt) basic accuracy and 10 MΩ input impedance - AC voltage to 600 V over 45–400 Hz at ±(1.5%rdg+3dgts) - Resistance 200 Ω to 20 MΩ, plus diode test and continuity buzzer (R<120 Ω) - 3½-digit backlit LCD, 1999-count maximum reading with auto polarity and OL indication - MAX, HOLD, manual RANGE selection, and Auto Power OFF after 15 minutes - Handheld 163×88×48 mm, 280 g, powered by 2 × 1.5 V AAA alkaline batteries The HT322 is a CAT IV digital multimeter with temperature measurements manufactured by HT Italia. It is a handheld 3½-digit instrument with a 1999-count maximum reading, automatic polarity indication, and a double-insulated enclosure that combines standard multimeter functions with Type K thermocouple temperature measurement in a single package. A digital multimeter is a general-purpose electrical measurement instrument that reads voltage, resistance, and related parameters on a single display. The HT322 measures DC and AC voltage, resistance, and performs diode and continuity testing, and adds a dedicated temperature function that reads contact temperature through a Type K thermocouple probe. ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. ## Product Core & Specifications Specification Value DC Voltage (Accuracy = ±(%rdg + digits) at 23°C ± 5°C, <75%HR) 200.0 mV (resolution 0.1 mV) ±(0.8%rdg+1dgt) 2.000 V (resolution 0.001 V) ±(0.8%rdg+1dgt) 20.00 V (resolution 0.01 V) ±(0.8%rdg+1dgt) 200.0 V (resolution 0.1 V) ±(0.8%rdg+1dgt) 600 V (resolution 1 V) ±(1.0%rdg+2dgt) Input impedance 10 MΩ Overload protection 600 VDC/ACrms AC Voltage (45 ÷ 400 Hz) 200.0 mV (resolution 0.1 mV) Not specified 2.000 V (resolution 0.001 V) Not specified 20.00 V (resolution 0.01 V) Not specified 200.0 V (resolution 0.1 V) Not specified 600 V (resolution 1 V) ±(1.5%rdg+3dgts) Input impedance 10 MΩ Overload protection 600 VDC/ACrms Resistance 200.0 Ω (resolution 0.1 Ω) ±(1.0%rdg+8dgts) 2.000 kΩ (resolution 0.001 kΩ) ±(1.0%rdg+8dgts) 20.00 kΩ (resolution 0.01 kΩ) ±(1.0%rdg+8dgts) 200.0 kΩ (resolution 0.1 kΩ) ±(1.0%rdg+8dgts) 2.000 MΩ (resolution 0.001 MΩ) ±(1.0%rdg+3dgts) 20.00 MΩ (resolution 0.01 MΩ) ±(3.0%rdg+3dgts) Open voltage about 3.0 V Overload protection 600 VDC/ACrms (< 30 sec) Diode Test Resolution 1 mV Open voltage circa 1.5 VDC Overload protection 600 VACrms (< 30 sec) Continuity Test Buzzer R < 120 Ω Open voltage about 1.5 VDC Overload protection 600 VACrms (< 30 sec) Temperature with Type K Probe \-40°C ÷ 0°C (resolution 1°C) ±5°C 0°C ÷ 800°C (resolution 1°C) ±(2.0%rdg+3dgt) \-40°F ÷ 31°F (resolution 1°F) ±9°F 32°F ÷ 1382°F (resolution 1°F) ±(2.0%rdg+5dgt) Overload protection 600 VACrms (< 30 sec) Display Type LCD display, 3 ½ digit with maximum reading 1999 counts with sign and decimal point Polarity Automatic polarity indication Backlight Yes Over range indication “OL” Features MAX Yes HOLD Yes RANGE Manual selection Auto Power OFF After 15 minutes of don’t work Low battery indication Symbol appears when battery voltage is low General Operating temperature \-5°C to 40°C, <80%HR Storage temperature \-10°C to 60°C, <70%HR Altitude max 2000 m Pollution degree 2 Insulation Double insulation Power supply 2 x 1.5 V alkaline batteries type AAA MN2400 LR03 AM4 Sizes 163(L) x 88(W) x 48(H) mm Weight (included batteries) 280 g Applied standards (LVD) EN 61010-1 CAT IV 600V – CAT III 1000V Applied standards (EMC) EN60326 > **Important:** Overload protection: 600 V DC/AC rms. Resistance, diode, continuity, and temperature inputs are rated to 600 V AC rms for under 30 seconds. ## 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:** 135.0 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 | 135.00 USD | In stock | ## Images - HT322 HT Instruments Multimeter --- > Source: [ValueTronics](https://valuetronics.com/products/ht322-ht-instruments-multimeter-new) > Updated: 2026-06-20