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The HT Instruments HT65 is a CAT IV true-RMS digital multimeter rated for DC voltage measurement up to 1500 V. It uses TRMS conversion for accurate readings on both AC voltage and AC current, and combines a broad set of electrical measurement functions in a single handheld instrument carrying a CAT IV 600 V / CAT III 1000 V to-ground measurement category with double insulation.
A digital multimeter measures fundamental electrical quantities — voltage, current, resistance and related parameters — and presents the result on a numeric display. The HT65 extends that core role across a wide function set: DC and AC TRMS voltage, a low-impedance (LoZ) voltage mode, DC and AC current via transducer clamps, resistance and continuity, capacitance, frequency, duty cycle, diode test, and temperature with a Type K probe.
ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, so the instruments we list are equipment we actually keep on hand.
| Specification | Value |
|---|---|
| DC Voltage (Input impedance 10MΩ, Overload protection 1500VDC) | |
| 400.0mV (res 0.1mV) | (1.2rdg+4dgt) |
| 4.000V (res 0.001V) | (1.2rdg+4dgt) |
| 40.00V (res 0.01V) | (1.2rdg+4dgt) |
| 400.0V (res 0.1V) | (1.2rdg+4dgt) |
| 1500V (res 1V) | (1.5rdg+2dgt) |
| AC TRMS Voltage (50Hz÷1kHz, Input impedance 10MΩ, Overload protection 1000VDC/ACrms) | |
| 4.000V (res 0.001V) | (1.2rdg+10dgt) |
| 40.00V (res 0.01V) | (1.5rdg+3dgt) |
| 400.0V (res 0.1V) | (1.5rdg+3dgt) |
| 1000V (res 1V) | (2.0rdg+4dgt) |
| Non-sinusoidal waveform (50HzĂ·60Hz) | (10.0%rdg+10dgt) |
| DC/AC TRMS Voltage with Low Impedance (LoZ) (Input impedance approx 3kΩ, Overload protection 600VDC/ACrms, 50Hz÷1kHz) | |
| 4.000V (res 0.001V) | (3.0rdg+40dgt) |
| 40.00V (res 0.01V) | (3.0rdg+40dgt) |
| 400.0V (res 0.1V) | (3.0rdg+40dgt) |
| 600V (res 1V) | (3.0rdg+40dgt) |
| Non-sinusoidal waveform (50HzĂ·60Hz) | (10.0%rdg+10dgt) |
| Diode Test (Overload protection 250VDC/ACrms) | |
| Resolution 1mV, Max open voltage <3VDC | (10%rdg+5dgt) |
| DC Current with Transducer Clamps (Overload protection 1000VDC/ACrms) | |
| 10A (100mV/1A, res 0.01A) | (1.5%rdg+6dgt) |
| 40A (10mV/1A, with HT4006) | (1.5%rdg+26dgt) (instrument + clamp) |
| 100A (res 0.1A) | (1.5%rdg+6dgt) |
| 400A (1mV/1A, with HT4006) | (1.5%rdg+26dgt) (instrument + clamp) |
| 1000A (res 1A) | (1.5%rdg+6dgt) |
| AC TRMS Current with Transducer Clamps (Overload protection 1000VDC/ACrms) | |
| 1000mA (1V/1A, res 1mA) | (2.5%rdg+10dgt) |
| 10A (100mV/1A, res 0.01A) | (2.5%rdg+10dgt) |
| 30A (100mV/1A) | (2.5%rdg+10dgt) |
| 40A (10mV/1A, with HT4006) | (3.5%rdg+30dgt) (instrument + clamp) |
| 100A (10mV/1A, res 0.1A) | (2.5%rdg+10dgt) |
| 300A | (2.5%rdg+10dgt) |
| 400A (1mV/1A, with HT4006) | (3.5%rdg+30dgt) (instrument + clamp) |
| 1000A (1mV/1A, res 1A) | (2.5%rdg+10dgt) |
| 3000A | (2.5%rdg+10dgt) |
| Resistance and Continuity Test (Overload protection 250VDC/ACrms, Buzzer <50Ω) | |
| 400.0Ω (res 0.1Ω) | (1.2rdg+4dgt) |
| 4.000kΩ (res 0.001kΩ) | (1.0rdg+2dgt) |
| 40.00kΩ (res 0.01kΩ) | (1.2rdg+2dgt) |
| 400.0kΩ (res 0.1kΩ) | (1.2rdg+2dgt) |
| 4.000MΩ (res 0.001MΩ) | (1.2rdg+2dgt) |
| 40.00MΩ (res 0.01MΩ) | (2.0rdg+3dgt) |
| Frequency (Electrical circuit) (Overload protection 600VDC/ACrms) | |
| 10HzĂ·10kHz (res 0.001HzĂ·0.01kHz) | (1.5%rdg+5dgt) |
| Frequency (Electronic circuit) (Overload protection 250VDC/ACrms, Sensitivity >8Vrms) | |
| 9.999Hz (res 0.001Hz) | (1.5%rdg+5dgt) |
| 99.99Hz (res 0.01Hz) | (1.5%rdg+5dgt) |
| 999.9Hz (res 0.1Hz) | (1.2%rdg+3dgt) |
| 9.999kHz (res 0.001kHz) | (1.2%rdg+3dgt) |
| 99.99kHz (res 0.01kHz) | (1.2%rdg+3dgt) |
| 999.9kHz (res 0.1kHz) | (1.2%rdg+3dgt) |
| 9.999MHz (res 0.001MHz) | (1.5%rdg+4dgt) |
| 10.00MHz (res 0.01MHz) | (1.5%rdg+4dgt) |
| Duty Cycle (Pulse frequency 5Hz÷10kHz, Pulse duration 100µs÷100ms) | |
| 0.5%Ă·99% (res 0.1%) | (1.2rdg+2dgt) |
| Capacitance (Autorange, Overload protection 250VDC/ACrms) | |
| 40.00nF (res 0.01nF) | (5.0%rdg+7dgt) |
| 400.0nF (res 0.1nF) | (3.0%rdg+5dgt) |
| 4.000µF (res 0.001µF) | (3.0%rdg+5dgt) |
| 40.00µF (res 0.01µF) | (3.0%rdg+5dgt) |
| 400.0µF (res 0.1µF) | (5.0%rdg+5dgt) |
| 4.000mF (res 0.001mF) | (10%rdg) |
| 40.00mF (res 0.01mF) | (10%rdg) |
| Temperature with Type K Probe (Autorange, Overload protection 250VDC/ACrms) | |
| -20°C ÷ 760°C (res 1°C) | (3.0%rdg+5°C) |
| -4°F ÷ 1400°F (res 1°F) | (3.0%rdg+9°F) |
| Display | |
| Type | LCD, 4 dgt 4000 counts, decimal point and bargraph |
| Polarity | Automatic polarity indication |
| Backlight | Yes |
| Over range | “OL” over range indication |
| Response time | 3/s |
| Conversion | TRMS |
| Features | |
| Functions | Data HOLD, RANGE, REL |
| Power Supply | |
| Battery | 1 x 9V alkaline battery type IEC 6F22 |
| Battery life | ca 45h (backlight ON), ca 60h (backlight OFF) |
| Auto Power OFF | After 15 minutes of idleness |
| Mechanical Specifications | |
| Dimensions (L x W x H) | 175 x 85 x 55mm |
| Weight (included batteries) | 360g |
| Mechanical protection | IP40 |
| Environmental Conditions | |
| Working temperature | 0°C ÷ 40°C |
| Working humidity | <70%RH |
| Storage temperature | -20°C ÷ 60°C |
| Storage humidity | <80%RH |
| Altitude max of use | 2000m |
| Reference Guidelines | |
| Safety | IEC/EN61010-1 |
| EMC | IEC/EN61326-1 |
| Pollution degree | 2 |
| Insulation | Double insulation |
| Measurement category | CAT IV 600V – CAT III 1000V to ground |
Important: Measurement category: CAT IV 600 V – CAT III 1000 V to ground. Double insulation, pollution degree 2.
Important: DC and AC current measurements are performed with external transducer clamps; the 40 A and 400 A ranges require the HT4006 transducer, and accuracy marked (***) refers to the instrument plus clamp. The transducer clamp is not part of the instrument's own specifications.
Important: Temperature measurement requires a Type K thermocouple probe; the stated accuracy is referred to the instrument without the probe.
Important: Measurement category: CAT IV 600V – CAT III 1000V to ground. Maximum DC voltage input 1500V; maximum AC TRMS voltage input 1000V.
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.
Model No
HT
Condition
Factory New
Manufacturer
HT Italia
Multi_met_acv
1000 V
Multi_met_dcv
1500 V
Multi_met_dig
4000 counts
Multi_met_type
TRMS
30+ Years in Business
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On-site Lab
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