More Maintenance Measurement Solutions from HIOKI
Test instruments for grounding, lighting, phase rotation, and more
HIOKI provides precise and practical test instruments for specific electrical tasks, from grounding resistance testing and lighting measurement to phase rotation detection.
Earth resistance testers like the FT6031-50 and FT6041 support fast, safe, and standards-compliant checks of protective and functional grounding systems – ideal for maintenance, inspections, and safety testing in building installations. For indoor lighting measurement, lux meters like the FT3425 help verify compliance with workplace lighting standards such as EN 12464-1, delivering quick readings and flexible data storage. The PD3129-10 phase rotation tester clearly identifies conductor arrangement in three-phase systems – perfect for fast verification during installation or servicing.
FT3151
FT3151 - ANALOG EARTH TESTER
The Classic Ground Resistance Tester FT3151 is equipped with an Easy Cord Winding System and operates using the AC potentiometer method. It offers both three-electrode and two-electrode measurement methods, which can be switched according to your needs. With measuring frequencies of 575 Hz and 600 Hz, the tester is designed for accurate and reliable ground resistance measurements. The measurement current is 15 mA rms or less for the three-electrode method and 3 mA rms or less for the two-electrode method. The open circuit voltage is 50 V AC rms or less, and the available resistance measurement ranges are 10, 100, and 1000 Ohm.Technical Details: Measurement methods: AC potentiometer method, Three-electrode method, Two-electrode method (switchable) Measuring frequency: 575 Hz / 600 Hz Measurement current:
o Three-electrode method: 15 mA rms or less
o Two-electrode method: 3 mA rms or less Open circuit voltage: 50 V AC rms or less Resistance measurement ranges: 10/100/1000 Ohm
FT3424
FT3424 - Luxmeter, compatible with LED/OLED
The FT3424 Lux Meter is a highly accurate instrument designed to measure illuminance in various environments, ensuring that lighting conditions meet the required standards. Its compact, lightweight design and fast response time make it suitable for use in industries such as construction, facility management, and quality control. Technical Specifications:Classification: JIS C 1609-1: 2006 General Class AA, DIN 5032-7: 1985 Class BLight Receiving Element: Silicon photo-diode Display: 4-digit LCD, 2000 counts, Display update rate: 500 ms ±20 ms Measurement Ranges:
o 20 lx, 200 lx, 2000 lx, 20000 lx, 200000 lx
o Measurement steps: 1 mV DC / 0.01 lx to 100 mV DC / 100 lx Linearity: ±2% rdg (Multiply by 1.5 for values over 3000 lx) Accuracy: ±4% f.s. Response Time: Auto: within 5 seconds, Manual: within 2 seconds Output Specifications: D/A output, 1 mV resolution, Output rate: 500 ms Power Supply: 2 × AA (LR6) alkaline batteries or USB bus power 5 V DC Operating Temperature: -10°C to 40°C (14°F to 104°F), 80% RH or less Dimensions: 78 mm (W) × 170 mm (H) × 39 mm (D) Weight: Approx. 310 g (including batteries)
FT3425
FT3425 - Luxmeter, compatible with LED/OLED, Bluetooth
The FT3425 Lux Meter is a highly accurate instrument designed to measure illuminance in various environments, ensuring that lighting conditions meet the required standards. Its compact, lightweight design and fast response time make it suitable for use in industries such as construction, facility management, and quality control. The FT3425 comes with Bluetooth wireless technology for seamless data transfer.Technical Specifications:Classification: JIS C 1609-1: 2006 General Class AA, DIN 5032-7: 1985 Class B Light Receiving Element: Silicon photo-diode Display: 4-digit LCD, 2000 counts, Display update rate: 500 ms ±20 ms Measurement Ranges:
o 20 lx, 200 lx, 2000 lx, 20000 lx, 200000 lx
o Measurement steps: 1 mV DC / 0.01 lx to 100 mV DC / 100 lx Linearity: ±2% rdg (Multiply by 1.5 for values over 3000 lx) Accuracy: ±4% f.s. Response Time: Auto: within 5 seconds, Manual: within 2 seconds Output Specifications: D/A output, 1 mV resolution, Output rate: 500 ms Wireless Connectivity: Bluetooth 4.0LE Power Supply: 2 × AA (LR6) alkaline batteries or USB bus power 5 V DCOperating Temperature: -10°C to 40°C (14°F to 104°F), 80% RH or less Dimensions: 78 mm (W) × 170 mm (H) × 39 mm (D) Weight: Approx. 320 g (including batteries)
FT6031-50
FT6031-50 - 2- and 3-pole earth tester
The Hioki FT6031-50 Earth Tester is a rugged and reliable instrument designed for measuring ground resistance using either the two-electrode or three-electrode method. With an IP67 rating for dustproof and waterproof performance, it is ideal for use in tough outdoor environments. The device features automatic pre-check functions for disturbance voltage and auxiliary grounding resistance, ensuring accuracy and efficiency. It also supports optional Bluetooth® wireless communication via the Z3210 adapter, enabling fast data transfer to smartphones or tablets for easy report generation. The FT6031-50 is engineered to withstand a 1-meter drop onto concrete, making it a dependable tool for fieldwork.Technical Information: Measurement system: Two-electrode / Three-electrode Measurement range: 0 to 2000 Ω Accuracy: ±1.5% rdg. ±4 dgt.Operating temperature: −25°C to 65°C Power supply: 4 AA (LR6) Alkaline batteries Dustproof and waterproof rating: IP67 Drop-proof: 1 m onto concrete Safety category: CAT IV 100 V / CAT III 150 V / CAT II 300 V
FT6041
FT6041 - Earth tester
The Hioki FT6041 Earth Tester is a versatile instrument designed for measuring earth resistance in complex ground systems using both the two-electrode and three-electrode methods. It offers IP67-rated dustproof and waterproof protection, making it highly durable for tough outdoor conditions.The FT6041 also features wireless communication support via the optional Z3210 adapter for seamless data transfer to mobile devices, enabling efficient report generation. With automatic checks for disturbance voltage and auxiliary earthing resistance, it ensures accurate measurements. Built for fieldwork, the device is drop-proof from a height of 1 meter onto concrete. Technical Information: Measurement system: Two-electrode / Three-electrode Measurement range: 0 to 2000 ΩAccuracy: ±1.5% rdg. ±4 dgt. Operating temperature: −25°C to 65°C Power supply: 4 AA (LR6) Alkaline batteries Dustproof and waterproof rating: IP67 Drop-proof: 1 m onto concrete Safety category: CAT IV 100 V / CAT III 150 V / CAT II 300 V
FT6380-50
FT6380-50 - CLAMP ON EARTH TESTER
The FT6380-50 is designed for multi-grounded systems, providing accurate true RMS measurements for leakage and load currents. It features high resolution and precision. Technical Details: Current range: 20 mA to 60 A Resolution: 0.01 mA / 0.1 A Accuracy: +/-2%rdg, +/-0.05 mA Measurement type: True RMS
FT9847
FT9847 - Signal induction clamp
The Hioki FT9847 Signal Induction Clamp is a key accessory for the FT6041 Earth Tester, designed to inject measurement signals during two-clamp earth resistance tests. This clamp ensures efficient and accurate measurements when used with the FT6041. It supports signal injection through conductors up to 52 mm in diameter or busbars with dimensions of 78 mm × 20 mm. With a maximum input current of 1000 A (for 1 minute) and a rated current of 50 A, it is ideal for precise signal injection in field testing. Built for tough conditions, it operates in temperatures from −25°C to 65°C and offers IP40 protection during storage. Technical Information: Maximum input current: 1000 A (1 minute, 45 Hz to 128 Hz) Rated current: 50 A (45 Hz to 128 Hz) Measurable conductor diameter: 52 mm or less Cable length: 2 mOperating temperature: −25°C to 65°C Dust and water resistance: IP40 (storage condition)Safety category: CAT III 600 V / CAT IV 300 V Connector: 4 mm banana plug
PD3129
PD3129 - Direction of rotation indicator up to 600V
The PD3129 is a phase detector designed for safe, non-contact phase detection on thin conductors. It handles voltages up to 600 V AC and features clear LED indications for positive and negative phase detection. This compact and lightweight device offers reliable live line checks, making it ideal for a variety of environments. Technical Details: Voltage Range: 70 to 600 V AC (continuous sine wave) Frequency Range: 45 Hz to 66 Hz Conductor Size: 2.4 mm (0.09 in) to 17 mm (0.67 in) insulated wiring Phase Indication:
o Positive phase: LEDs light in clockwise order, buzzer sounds intermittently, green arrow lights up
o Negative phase: LEDs light in counterclockwise order, buzzer sounds continuously Functions: Live line check, battery check function Power Supply: R6P manganese battery × 2 Operating Time: 5 hours Dimensions: 70 × 75 × 30 mm (2.76 × 2.95 × 1.18 in) Cable Length: 70 cm (2.30 ft) Weight: 200 g (7.1 oz) Safety Category: CAT IV 600 V
PD3129-10
PD3129-10 - Direction of rotation indicator
The PD3129-10 is a phase detector built for thicker conductors and higher voltage applications. It supports voltages up to 1000 V AC and provides safe, non-contact phase detection. With clear LED phase indications and live line checking functions, it ensures efficient and reliable operation for industrial environments. Technical Details: Voltage Range: 70 to 1000 V AC (continuous sine wave) Frequency Range: 45 Hz to 66 Hz Conductor Size: 7 mm (0.28 in) to 40 mm (1.57 in) insulated wiringPhase Indication:
o Positive phase: LEDs light in clockwise order, buzzer sounds intermittently, green arrow lights up
o Negative phase: LEDs light in counterclockwise order, buzzer sounds continuously Functions: Live line check, battery check function Power Supply: R6P manganese battery × 2 Operating Time: 5 hours Dimensions: 70 × 75 × 30 mm (2.76 × 2.95 × 1.18 in) Cable Length: 70 cm (2.30 ft) Weight: 240 g (8.5 oz) Safety Category: CAT IV 600 V, CAT III 1000 V