The RM3548-50 is a precision handheld resistance meter measuring from 0.1 µΩ to 3.5 MΩ. It offers effortless operation and accuracy, making it ideal for EV maintenance, aircraft overhaul, and motor inspections. This kit includes a 9465-11, 2 x Z5020 and an EV maintenance manual.
The RM3548-50 is a precision handheld resistance meter measuring from 0.1 µΩ to 3.5 MΩ. It offers effortless operation and accuracy, making it ideal for EV maintenance, aircraft overhaul, and motor inspections. This kit includes a 9465-11, 2 x Z5020 and an EV maintenance manual.
Leveraging its precision, the RM3548-50 goes beyond basic resistance measurement. It not only performs temperature correction but also converts resistance to estimated motor temperatures and calculates cable lengths with 1 cm precision. Its versatile probes, including high-durability pin-types and needle probes that measure through paint, meet various maintenance needs. Advanced connectivity enables seamless wireless data output for efficient recording and management of measurements. Ensuring precise readings with a four-wire method and offset voltage compensation (OVC), the RM3548-50 is the go-to tool for dependable precision maintenance.
Features
Precision engineering
Simple resistance measurement
Automatic calculations
Easy! Just connect the optional Z3210 Wireless Adapter to your Hioki compatible instrument, to make it Bluetooth® ready.
Direct Excel® integration
Variety of probes to choose from
Circuit protection
In EV maintenance or battery busbar testing, accidental contact with live voltage can damage a resistance meter. The RM3548-50 features automatic overvoltage protection to prevent this, stopping measurements and safeguarding the circuit from live voltages of up to 60 V DC.
4 essential test tools for EV high-voltage shutdown and reinitialization
Recommended by leading EV and hybrid manufacturers for reliable and precise maintenance tasks, the RM3548-50 meets the UN ECE R100 international safety standards, which require a minimum measurement current of 0.2 A.
| Resistance range | 3 mΩ (3.5000 mΩ display Max., 0.1 µΩ resolution) to 3 MΩ range (3.5000 MΩ display Max., 100 Ω resolution), 10 steps Measurement accuracy: ±0.020 % rdg. ±0.007 % f.s. |
| Testing current | [at 3 mΩ range] 1 A DC to [at 3 MΩ range] 500 nA DC |
| Open-terminal voltage | 5.5 V DC max. |
| Temperature measurement | -10.0°C to 99.9°C, accuracy: ±0.5°C (Temperature Sensor Z2002 and RM3548-50 combined accuracy) |
| Measurement speed | Fixed |
| Display refresh rate | Without OVC: approx. 100 ms With OVC: approx. 230 ms |
| Functions | Temperature correction, temperature conversion, offset voltage compensation (OVC), comparator (ABS/REF%), length conversion, judgment sound setting, auto hold, auto power save (APS), Averaging, panel store/panel load, USB communication interface (RM3548-50 internal memory is recognized as a mass storage device when connected to a PC), wireless communication via Bluetooth® (Z3210 is necessary) |
| Memory storage | Number of recordable data points: up to 1000 for manual/auto, up to 6000 for interval Interval: 0.2 s to 10.0 s (0.2 s step) Acquisition of data from memory: display, USB mass storage (CSV, TXT files) |
| Power supply | LR6 alkaline batteries × 8 HR6 nickel-metal hydride batteries × 8 Continuous use: approx. 10 hours Rated voltage: 5 VA max. |
| Dimensions and weight | Approx. 199 mm (7.8 in.) W × 132 mm (5.2 in.) H × 60 mm (2.4 in.) D (including the protector) Approx. 890 g (31.4 oz) (including the batteries and protector) |
| Resistance range | 3 mΩ (3.5000 mΩ display Max., 0.1 µΩ resolution) to 3 MΩ range (3.5000 MΩ display Max., 100 Ω resolution), 10 steps Measurement accuracy: ±0.020 % rdg. ±0.007 % f.s. |
| Testing current | [at 3 mΩ range] 1 A DC to [at 3 MΩ range] 500 nA DC |
| Open-terminal voltage | 5.5 V DC max. |
| Temperature measurement | -10.0°C to 99.9°C, accuracy: ±0.5°C (Temperature Sensor Z2002 and RM3548-50 combined accuracy) |
| Measurement speed | Fixed |
| Display refresh rate | Without OVC: approx. 100 ms With OVC: approx. 230 ms |
| Functions | Temperature correction, temperature conversion, offset voltage compensation (OVC), comparator (ABS/REF%), length conversion, judgment sound setting, auto hold, auto power save (APS), Averaging, panel store/panel load, USB communication interface (RM3548-50 internal memory is recognized as a mass storage device when connected to a PC), wireless communication via Bluetooth® (Z3210 is necessary) |
| Memory storage | Number of recordable data points: up to 1000 for manual/auto, up to 6000 for interval Interval: 0.2 s to 10.0 s (0.2 s step) Acquisition of data from memory: display, USB mass storage (CSV, TXT files) |
| Power supply | LR6 alkaline batteries × 8 HR6 nickel-metal hydride batteries × 8 Continuous use: approx. 10 hours Rated voltage: 5 VA max. |
| Dimensions and weight | Approx. 199 mm (7.8 in.) W × 132 mm (5.2 in.) H × 60 mm (2.4 in.) D (including the protector) Approx. 890 g (31.4 oz) (including the batteries and protector) |