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The HT61 is a CAT IV, 6000-count TRMS digital multimeter from HT Instruments (HT Italia SRL). It uses true-RMS conversion and presents readings on a 4-digit LCD with a 6000-count display, sign and decimal-point indication, an analog bargraph, and a backlight, with an "OL" over-range indication and automatic polarity.
A true-RMS digital multimeter measures voltage, current, resistance, and related electrical parameters, reporting accurate values for both sinusoidal and non-sinusoidal signals. The HT61 covers DC and AC TRMS voltage, DC and AC TRMS current, resistance and continuity, diode test, frequency, and duty cycle within a single handheld instrument.
ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive, Elgin, Illinois.
| Specification | Value |
|---|---|
| DC Voltage (Accuracy [rdg + (num dgt × resolution)], ta 18°C…28°C, <75%RH) | |
| 600.0 mV (Resolution 0.1 mV) | (0.8rdg+5dgt) |
| 6.000 V (Resolution 0.001 V) | (0.8rdg+5dgt) |
| 60.00 V (Resolution 0.01 V) | (0.8rdg+5dgt) |
| 600.0 V (Resolution 0.1 V) | (0.8rdg+5dgt) |
| 1000 V (Resolution 1 V) | (0.8rdg+5dgt) |
| Input impedance | >10 MΩ |
| Overload protection | 1000VDC/ACrms |
| AC TRMS Voltage (Accuracy specified from 5% to 100% of measurement range) | |
| 6.000 V (Resolution 0.001 V) | (1.0rdg+8dgt) @ 50Hz…60Hz; (2.0rdg+8dgt) @ 61Hz…400Hz |
| 60.00 V (Resolution 0.01 V) | (1.0rdg+8dgt) @ 50Hz…60Hz; (2.0rdg+8dgt) @ 61Hz…400Hz |
| 600.0 V (Resolution 0.1 V) | (1.0rdg+8dgt) @ 50Hz…60Hz; (2.0rdg+8dgt) @ 61Hz…400Hz |
| 1000 V (Resolution 1 V) | (1.2rdg+8dgt) @ 50Hz…60Hz; (2.5rdg+8dgt) @ 61Hz…400Hz |
| Input impedance | >10 MΩ |
| Crest factor | 3 (up to 500V), 1.5 (up to 1kV) |
| Overload protection | 1000VDC/ACrms |
| DC/AC TRMS Voltage with Low Impedance (LoZ), 50Hz…400Hz | |
| 600.0 mV (DC only) (Resolution 0.1 mV) | (0.8rdg+5dgt) |
| 6.000 V (Resolution 0.001 V) | (0.8rdg+5dgt) |
| 60.00 V (Resolution 0.01 V) | (0.8rdg+5dgt) |
| 600.0 V (Resolution 0.1 V) | (0.8rdg+5dgt) |
| 1000 V (Resolution 1 V) | (0.8rdg+5dgt) |
| Input impedance | approx 3 kΩ |
| Overload protection | 1000VDC/ACrms |
| DC Current | |
| 600.0 µA (Resolution 0.1 µA) | (1.0rdg+3dgt) |
| 6000 µA (Resolution 1 µA) | (1.0rdg+3dgt) |
| 60.00 mA (Resolution 0.01 mA) | (1.0rdg+3dgt) |
| 600.0 mA (Resolution 0.1 mA) | (1.0rdg+3dgt) |
| 6.000 A (Resolution 0.001 A) | (1.5rdg+3dgt) |
| 10.00 A (Resolution 0.01 A) | (1.5rdg+3dgt); 20A for max 30s with not declared accuracy |
| Overload protection (inputs mA, µA) | Fast Fuse 800mA/1000VAC/DC |
| Overload protection (input 10A) | Fast Fuse 10A/1000VAC/DC |
| AC TRMS Current (Accuracy specified from 5% to 100% of measurement range, 40Hz…400Hz) | |
| 600.0 µA (Resolution 0.1 µA) | (1.5rdg+8dgt) |
| 6000 µA (Resolution 1 µA) | (1.5rdg+8dgt) |
| 60.00 mA (Resolution 0.01 mA) | (1.5rdg+8dgt) |
| 600.0 mA (Resolution 0.1 mA) | (1.5rdg+8dgt) |
| 6.000 A (Resolution 0.001 A) | (2.0rdg+3dgt) |
| 10.00 A (Resolution 0.01 A) | (2.0rdg+3dgt); 20A for max 30s with not declared accuracy |
| Overload protection (inputs mA, µA) | Fast Fuse 800mA/1000VAC/DC |
| Overload protection (input 10A) | Fast Fuse 10A/1000VAC/DC |
| Diode Test | |
| Max test current | <0.9 mA |
| Open voltage | 2.8 V |
| Resistance and Continuity Test | |
| 600.0 Ω (Resolution 0.1 Ω) | (1.0rdg+4dgt) |
| 6.000 kΩ (Resolution 0.001 kΩ) | (1.0rdg+4dgt) |
| 60.00 kΩ (Resolution 0.01 kΩ) | (1.0rdg+4dgt) |
| 600.0 kΩ (Resolution 0.1 kΩ) | (1.0rdg+4dgt) |
| 6.000 MΩ (Resolution 0.001 MΩ) | (1.0rdg+4dgt) |
| 60.00 MΩ (Resolution 0.01 MΩ) | (2.0rdg+10dgt) |
| Continuity buzzer | <100 Ω |
| Overload protection | 1000VDC/ACrms |
| Frequency (Electronic circuits) | |
| 9.999 Hz (Resolution 0.001 Hz) | (0.1rdg+8dgt) |
| 99.99 Hz (Resolution 0.01 Hz) | (0.1rdg+8dgt) |
| 999.9 Hz (Resolution 0.1 Hz) | (0.1rdg+8dgt) |
| 9.999 kHz (Resolution 0.001 kHz) | (0.1rdg+8dgt) |
| 99.99 kHz (Resolution 0.01 kHz) | (0.1rdg+8dgt) |
| 999.9 kHz (Resolution 0.1 kHz) | (0.1rdg+8dgt) |
| 9.999 MHz (Resolution 0.001 MHz) | (0.1rdg+8dgt) |
| 40.00 MHz (Resolution 0.01 MHz) | (0.1rdg+8dgt) |
| Sensitivity | 0.8 Vrms min (20% < duty < 80%, <100kHz); 5 Vrms min (20% < duty < 80%, >100kHz) |
| Overload protection | 1000VDC/ACrms |
| Frequency (Electrical circuits) | |
| 10 Hz…400 Hz (Resolution 0.001 Hz) | (1.5rdg+5dgt) |
| Sensitivity | 15 Vrms / 10 Arms |
| Overload protection | 1000VDC/ACrms |
| Duty Cycle | |
| 0.1…99.9% (Resolution 0.01%) | (1.2rdg+2dgt) |
| Pulse width | 100 µs ÷ 100 ms |
| Frequency | 5 Hz…150 kHz |
| Overload protection | 1000VDC/ACrms |
| General Specifications | |
| Display | LCD, 4dgt, 6000 counts, sign, decimal point and bargraph |
| Polarity | Automatic polarity indication |
| Backlight | Yes |
| Over range indication | “OL” |
| Response time | 2/s |
| Conversion | TRMS |
| Features | Data HOLD, MAX/MIN, RANGE, REL |
| Power supply | 1x9V alkaline battery NEDA 1604 IEC 6F22 |
| Battery life | ca. 25h (backlight ON), ca. 50h (backlight OFF) |
| Auto Power OFF | After 15 minutes of idleness |
| Mechanical Specifications | |
| Dimensions (L x W x H) | 175 x 85 x 55 mm |
| Weight (included battery) | 360 g |
| Mechanical protection | IP40 |
| Environmental Conditions | |
| Working temperature | 5°C ÷ 40°C |
| Working humidity | <80%RH |
| Storage temperature | -20°C ÷ 60°C |
| Storage humidity | <80%RH |
| Altitude max of use | 2000 m |
| Reference Guidelines | |
| Safety | IEC/EN61010-1 |
| EMC | IEC/EN61326-1 |
| Pollution degree | 2 |
| Insulation | Double insulation |
| Measurement category | CAT IV 600V – CAT III 1000V |
Important: Measurement category: CAT IV 600V – CAT III 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.
Ships within 48 hours · Estimated delivery Jun 28 - Jul 3
US$40
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