- Single-channel current data loggers
- Easy to use, ready to operate in minutes
- Includes software for analysis and reporting of recorded data
- Remote access over the internet
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| User Manual |
- Two-channel current data loggers
- Wide range of current transformers available for each application
- Easy to use, set up in minutes
- Remote access over the internet
- Includes software for analysis and reporting of recorded data
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- Single-channel voltage data loggers
- With a rated voltage of 1500 V DC, it is suitable for use in photovoltaic systems.
- Easy to use, ready to operate in minutes
- Remote access over the internet
- Includes software for analysis and reporting of recorded data
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- Voltage quality diagnostics
- Full compliance with IEC 61000-4-30 Class A Ed 3
- Highly communicating instrument
- Qualistar range of easy-to-use products
- Alarms, recordings, transients, Inrush, etc.
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- 5 voltage inputs & 4 current inputs
- 10-minute Inrush mode
- Calculation of distorting power
- IP67: all-terrain model available
| Datasheet |
- TRMS AC+DC voltage up to 1,000 V
- TRMS AC+DC current: 5 mA to 10 kA (depending on the sensors)
- Frequency measurement
- Power values: W, VA, var, VAD, PF, DPF, cos φ, tan φ
- Energy values: Wh, varh, VAh, VADh, BTU, toe, Joule
- Harmonics: 0 to 50th order with phase information
- Transients: up to 50 events
- Inrush current capture over 4 periods
- Recording of selected parameters at maximum sampling rate from several days to several weeks
- Alarms: 4,000 entries across 10 alarm types
- Peak value detection
- Vectorial representation
- Available in more than 27 languages
- Protection rating: IP53 / IK08
- USB communication
- Compliance: IEC 61000-4-30 Class B
- Dimensions: 240 × 180 × 55 mm
- Weight: 1.9 kg
| Datasheet |
- TRMS AC+DC voltage up to 1,000 V
- TRMS AC+DC current: 5 mA to 10 kA depending on the sensors
- Frequency
- Power values: W, VA, var, VAD, PF, DPF, cos φ, tan φ
- Energy values: Wh, varh, VAh, VADh, BTU, toe, Joule,
- Harmonics from 0 to the 50th order, phase
- Transients: up to 210
- Inrush with waveform over a period > 10 minutes
- TrueInrush function
- Recording of a selection of parameters at the maximum sampling rate for several days to several weeks
- Alarms: 10,000 of 40 different types
- Peak detection
- Vectorial representation
- Available in more than 27 languages
- IP53 / IK08
- USB communication
- IEC 61000-4-30 Class B
- Dimensions / weight: 240 x 180 x 55 mm / 1.9 kg
| Datasheet |
C.A 8436, the rugged, waterproof IP67 Qualistar+:
- Indoor and outdoor use, even when it is raining
- 5 voltage inputs, 4 current inputs
- Continuous recording of all the parameters simultaneously
- Monitoring with alarms
- All types of installations
| Datasheet |
| User Manual |
Ergonomic, magnetized and suitable for all types of cabinets, PEL102 loggers provide all the power and energy measurements simultaneously.
- Voltage up to 1,000 V
- Current up to 10,000 A
- Voltage ratio / current ratio up to 650,000 V / up to 25,000 A
- Power from 10 W/var/VA to 10 GW/Gvar/GVA
- Energy up to 4EWh / 4 EVAh / 4 Evarh
- Phase: cos φ, tan Φ, PF
- Harmonics up to 50th order
- 8 GB SD memory card (SD-HC card up to 32 GB)
| Datasheet |
Ergonomic, magnetized and suitable for all types of cabinets, PEL103 loggers provide all the power and energy measurements simultaneously.
- Single-phase, split-phase and three-phase installations with or without a neutral, as well as other complex configurations.
- Implementation without cutting off the mains power supply
- BlueTooth, Ethernet and USB communication
- Automatic recognition of the sensors connected
- Recording on SD and SD-HC cards
- Real-time communication with a PC and analysis using PEL Transfer software
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- Compact magnetized casing,
- Communication via Wifi, GPRS, LAN (Ethernet), Bluetooth and USB
- ANDROID application
- Self-powered via its voltage inputs up to 600 V
- Continuous recording with an interval of 200 ms between measurements
- Measurements as per the IEEE 1459 standard
- 4 voltage inputs and 3 current inputs
| Datasheet |
| User Manual |
- IP67 all-terrain casing resistant to shock, UV light and high temperatures
- Communication via Wifi, GPRS, LAN (Ethernet), Bluetooth and USB
- Self-powered via its voltage inputs up to 1,000 V
- Continuous recording with an interval of 200 ms between measurements
- Measurements as per the IEEE 1459 standard
- 4 voltage inputs & 4 current inputs
- Ideal for installation on electricity poles
| Datenblatt |
| Bedienungsanleitung |
- Markets: small tertiary and residential
- electricians for consumption monitoring
- can be used to differentiate between the different loads
- More accurate thanks to the MINI94 current sensor
- Ergonomics: easy to read, simplicity, connections, compact design
- Connection via clamp without cutting off the power supply
| Datasheet |
| User Manual |
- Markets: small tertiary and residential
- electricians for consumption monitoring
- can be used to differentiate between the different loads
- More accurate thanks to the MINI94 current sensor
- Ergonomics: easy to read, simplicity, connections, compact design
- Connection via clamp without cutting off the power supply
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- Possibility of recordings covering several months
- Breakdown of energy losses
- Installation without cutting off the mains supply
- Android application with motor diagnostics
| Datasheet |
| User Manual |
- Possibility of recordings covering several months
- Breakdown of energy losses
- Installation without cutting off the mains supply
- Android application with motor diagnostics
| Datasheet |
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PQA820 is the innovative proposal by HT to easily analyze all involved components on a three-phase or single-phase electric system. When designing them, HT has taken particular care of three aspects: setting, the operating or storage environment and data transfer.
- PQA820 do not need to be set. They simply need to be connected, started and they respectively record 383 and 44 quantities simultaneously.
- They are provided with a comfortable IP65 case, which allows working in any kind of environment.
- When recording has finished, thanks to the WI-Fi connection, the devices are capable of transferring all data onto a tablet, smart phone or PC.
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- 4 Kanäle für Strom 0,1A bis 1000A AC TRMS
- Kanäle für Spannung 10V bis 460V AC TRMS
- Schein-, Wirk- und Blindleistungsmessung
- Schein-, Wirk- und Blindenergiemessung
- Messung von cos und Leistungsfaktor (PF)
- Messung von Frequenz
- Berechnung des THD für Spannung und Strom
- Oberschwingungsanalyse Spannung & Strom bis zur 50. Ordnung
- Netzarten: einphasig, Drehstrom mit oder ohne Neutralleiter
- Konfiguration und Datenübermittlung über USB, Wi-Fi
- Echtzeit-Analyse über Wifi oder USB
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One instrument for all electrical safety tests and Power Quality analysis GSC60 was designed with the aim of making safety of electrical installations visible and valuable, easily and quickly. Thanks to the new HTOS™ system the unit displays a message OK - NOT OK after completing the test. The user interface, totally updated under HTOS™, permits to set and carry out measurements in few steps. You can store all recorded data and create folders and subfolders for each kind of test adding comments and notes by means of virtual keyboard. GSC60 is also a three-phase power and energy consumption analyzer boasting, as unique feature, its FREE APP HTAnalysis compatible with iOS and Android. Test results can be transferred through Wi-Fi onto smartphone or tablet enclosing a picture, a video or a voice note to each measurement. You can transfer everything onto HT Cloud and make data available in real time for your colleagues all over the world. GSC60 makes the job of installer, electrician or consultant easy, rapid and cost-effective.
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1500V Multifunction I-V Curve Tracer for maintenance and efficiency tests on single-phase installations.
- Measurement of efficiency of a single-phase photovoltaic system
- Measurement of I-V Curve of a module or of a string up to 1500V/10A - 1000V/15A
- Measurement of open-circuit voltage of a module or of a string (VOC) 1500V
- Measurement of short-circuit current of a module or of a string (ISC) 15A
SOLAR I-Ve allows both testing a single-phase (three-phase with optional MPP300) photovoltaic system and verifying I-V curve. Thanks to remote unit SOLAR02, it is possible to test the system complying with the requirement of simultaneity as provided for by the reference standard. SOLAR02 is a datalogger which, synchronized with SOLAR I-Ve, acquires the data relevant to irradiation and temperature while tests carried out by SOLAR I-Ve are carried out. For measuring I-V curve, SOLAR I-Ve manages an internal database of the modules, which can be updated at any time by the user by comparing the measured data with the rated values, thus allowing the immediate evaluation whether the string or the module fulfills the efficiency parameters declared by the manufacturer. Current and voltage measurement at modules/strings output is measured with the 4-terminal method, which allows extending possible measuring cables without considering any compensation of their resistance, thus obtaining always precise measurements. At the end of the test, the display of I-V curve on the screen is a clear indication about the compliance with the specifications declared by the panel manufacturer.
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9 types of electrical systems available
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DC/AC TRMS voltage for single-phase/three-phase systems up to 600V
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Current DC/AC TRMS single-phase/three-phase systems up to 3000A
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Active, Reactive and Apparent Power/Energy
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Cosphi and Power Factor
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Voltage, Current, DC Power
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Neutral current measurement
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Voltage dips and peaks on 20ms @50hz
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Voltage dissymmetry (NEG%, ZERO%)
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Voltage/current waveforms
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Voltage/current harmonic histograms and THD%
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Voltage/current vector diagram
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Periodic recording with selectable PI between 2s and 30min
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Maximum number of quantities that can be selected simultaneously 600
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Voltage/current harmonic analysis up to the 49th
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Calculation and recording THD% voltages/currents
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Recording autonomy indication
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Recording of leakage currents
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| User Manual |
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9 types of electrical systems available
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DC/AC TRMS voltage for single-phase/three-phase systems up to 600V
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Current DC/AC TRMS single-phase/three-phase systems up to 3000A
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Active, Reactive and Apparent Power/Energy
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Cosphi and Power Factor
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Voltage, Current, DC Power
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Neutral current measurement
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Voltage dips and peaks on 20ms @50hz
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Voltage dissymmetry (NEG%, ZERO%)
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Voltage/current waveforms
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Voltage/current harmonic histograms and THD%
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Voltage/current vector diagram
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Periodic recording with selectable PI between 2s and 30min
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Maximum number of quantities that can be selected simultaneously 600
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Voltage/current harmonic analysis up to the 49th
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Calculation and recording THD% voltages/currents
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Recording autonomy indication
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Recording of leakage currents
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XL421 is a Data Logger capable of measuring and recording the true root mean square(TRMS) value of AC current up to 2500A in single-phase electric systems for different applications (evaluation of load currents, rated powers of transformers, etc.). The device has a comfortable mobile structure with integrated flex clamp jaws which allow surrounding also a big-sized cable or bar. Thanks to a an advanced memory management algorithm it is possible to monitor a system even for a long time. The device starts recording with a sampling period which can be selected through software among 1, 6, 30 and 60 seconds and, when memory is almost full, the previously recorded values are “re-sampled” according to the subsequent value of the sampling period, thus freeing part of the memory; the device then goes on recording new values, using the new measuring interval. In this way, it is possible to keep the device recording up to approximately 1 year. Each recording is kept stored in the internal memory and can be downloaded and managed by PC always through a dedicated software. Data Logger XL421 is also provided with a special adhesive strap which makes it possible to place it in any place in the installation where measuring is needed. The high protection rating (IP65) makes this device fully reliable also under extreme operating conditions.
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XL422 is a Data Logger capable of measuring and recording the true root mean square(TRMS) value of AC current up to 2500A in three-phase 3-wire electric systems for different applications (evaluation of load currents, rated powers of transformers, etc.). The device has a comfortable structure with integrated flex clamp jaws which allow surrounding also big-sized cables or bars. Thanks to a an advanced memory management algorithm it is possible to monitor a system even for a long time. The device starts recording with a sampling period which can be selected through software among 1, 6, 30 and 60 seconds and, when memory is almost full, the previously recorded values are “re-sampled” according to the subsequent value of the sampling period, thus freeing part of the memory; the device then goes on recording new values, using the new measuring interval. In this way, it is possible to keep the device recording up to approximately 90 days. Each recording is kept stored in the internal memory and can be downloaded and displayed on the PC always through a dedicated software. Data Logger XL422 is also provided with a special adhesive strap which makes it possible to place it in any place in the installation where measuring is needed. The high protection rating (IP65) makes this device fully reliable also under extreme operating conditions.
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XL423 is a Data Logger capable of measuring and recording the true root mean square(TRMS) value of AC voltage up to 600V in single-phase electric systems for different applications (evaluation of mains voltage, load unbalance, etc.). The device has a comfortable fully mobile structure complete with cables for measuring voltage with safety alligator clips. Thanks to a an advanced memory management algorithm it is possible to monitor a system even for a long time. The device starts recording with a sampling period which can be selected through software among 1, 6, 30 and 60 seconds and, when memory is almost full, the previously recorded values are “re-sampled” according to the subsequent value of the sampling period, thus freeing part of the memory; the device then goes on recording new values, using the new measuring interval. In this way, it is possible to keep the device recording up to approximately 1 year. Each recording is kept stored in the internal memory and can be downloaded and displayed on the PC always through a dedicated software. Data Logger XL423 is also provided with a special adhesive strap which makes it possible to place it in any place in the installation where measuring is needed. The high protection rating (IP65) makes this device fully reliable also under extreme operating conditions. Not available anymore. Alternative products: PQA820 MERCURY
| Datasheet |
XL424 is a Data Logger capable of measuring and recording the true root mean square(TRMS) value of AC voltage up to 600V in three-phase 4-wire electric systems for different applications (evaluation of mains voltage, load unbalance, etc.). The device has a comfortable fully mobile structure complete with cables for measuring voltage with safety alligator clips. Thanks to a an advanced memory management algorithm it is possible to monitor a system even for a long time. The device starts recording with a sampling period which can be selected through software among 1, 6, 30 and 60 seconds and, when memory is almost full, the previously recorded values are “re-sampled” according to the subsequent value of the sampling period, thus freeing part of the memory; the device then goes on recording new values, using the new measuring interval. In this way, it is possible to keep the device recording up to approximately 90 days. Each recording is kept stored in the internal memory and can be downloaded and displayed on the PC always through a dedicated software. Data Logger XL424 is also provided with a special adhesive strap which makes it possible to place it in any place in the installation where measuring is needed. The high protection rating (IP65) makes this device fully reliable also under extreme operating conditions. Not available anymore. Alternative products: PQA820 MERCURY
| Datasheet |
The F205 clamp is ideal for low and medium-power Low-Voltage applications, maintenance of tertiary or industrial electrical installations and troubleshooting and sizing of electrical power supplies.
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- AC and DC measurements
- Measurements of power and energy values
- Decomposition of harmonic orders
- Measurement recorder
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- AC and DC measurements
- Power and energy measurements
- Decomposition of harmonic orders
- Measurement recorder
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To deal with the highest level of low-voltage electrical installations, the F400 Series has a high protection rating and is ideal for maintenance, testing, monitoring and diagnostics on medium-power installations.
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With protection against electric shocks up to 12 kV, the F600 Series fulfils the most demanding safety criteria (CAT IV 1,000 V) and offers a high protection rating allowing users to work in total safety on all LV installations.
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Power and Energy Analysers
Power and energy analysers are measuring instruments designed to monitor and evaluate electrical parameters in power supply, distribution and consumption systems. They record quantities such as voltage, current, active power, apparent power, reactive power, energy consumption, power factor, frequency and, depending on the device, harmonic distortion. These analysers are essential tools for load studies, power quality assessments, energy optimisation and long-term monitoring of electrical installations.
FAQ
What is a power and energy analyser?
A power and energy analyser measures and evaluates electrical parameters over time, including voltage, current, various power types, energy, power factor and frequency. Many instruments also offer power quality analysis.
Which electrical quantities can be measured?
Commonly measured quantities include AC current and voltage, active power (kW), apparent power (kVA), reactive power (kvar), energy (kWh), power factor, frequency, inrush currents, load profiles and harmonic distortion.
Why are these instruments used?
They help identify inefficiencies, analyse load behaviour, verify system performance, detect power quality issues and document energy consumption for optimisation or compliance.
What advantages do they offer compared to simple measuring devices?
Unlike basic multimeters or clamp meters, power analysers record long-term data, energy values, harmonic content and detailed load profiles, enabling comprehensive diagnostics and reporting.
How do they work in single-phase and three-phase systems?
In single-phase systems the analyser measures voltage and current to calculate power and energy. In three-phase systems it measures all phases or uses configured wiring methods and calculates total power, load balance and energy according to the chosen connection scheme.
What accuracy and safety category are important?
High accuracy is required, especially for documentation or audits. The safety category rating (e.g., CAT III or CAT IV) must correspond to the installation environment for safe measurements.
Which additional functions are common?
Typical functions include data logging, time stamping, min/max/peak recording, graphical trend displays, SD card storage, USB or Ethernet interfaces, alarms and downloadable reports.
How important is harmonic and power quality analysis?
In systems with non-linear loads, harmonic analysis is essential for preventing overheating, malfunction and inefficiency. Many analysers detect harmonics, voltage dips, flicker and unbalance.
How is a power analyser correctly installed?
Clamp meters or current transformers are placed around conductors, voltage inputs are connected securely and the correct phase sequence is configured. All connections must be stable and properly rated before starting a measurement.
How can recorded data be exported?
Most devices allow export in formats such as CSV or Excel, or via USB, Ethernet or serial communication. Data can also be integrated into monitoring or SCADA systems.
How long can measurements be performed?
Depending on memory size and sampling rate, measurements can run for hours, days or weeks, allowing detailed long-term monitoring of energy use and load behaviour.
What should be considered when selecting an analyser?
Important criteria include phase compatibility, current range and transformer support, accuracy, storage capacity, interface options, harmonic analysis capability and robustness for industrial environments.
How are measurement results evaluated?
Results can be viewed directly on the device via graphical displays or analysed in software, enabling trend analysis, comparison of measurement periods and report creation.
Which industrial applications are typical?
Applications include load studies, machine commissioning, energy audits, system diagnostics, switchgear monitoring, power quality assessments and long-term facility monitoring.
How can energy analysers support energy efficiency?
By identifying load peaks, inefficient equipment, unbalanced phases or poor power factor, analysers enable targeted optimisation and energy-saving measures.
Which safety aspects must be observed?
All voltage and current connections must be rated for the measurement environment. Proper insulation, safe distances and correct current transformer placement are essential for safe operation.
How do analysers compare to smart meters?
Power analysers provide far more detailed measurement data, are portable, independent of utility equipment and include diagnostic and analytical tools that smart meters typically lack.
When should calibration be performed?
Calibration is recommended at regular intervals, particularly when measurements are used for audits, documentation or compliance verification.