PS74B Handheld single-phase energy meter on-site calibratorDetailed product description：

The PS74B handheld single-phase energy meter on-site calibration instrument is the latest fully digital, multifunctional, high-precision, and intelligent on-site calibration and inspection instrument developed. It is a new product with outstanding advantages such as new practicality, beautiful appearance, easy portability, simple operation, complete functions, strong anti-interference ability, stable and reliable operation, etc; It can not only verify the errors of electric energy meters, but also measure electrical data such as voltage, current, active power, reactive power, apparent power, power factor, etc. The instrument adopts DSP high-speed data processing technology, single board fully automatic surface mount design, simple structure, few components, small size, light weight, high reliability, easy to carry, and is an ideal instrument for on-site verification and inspection. It is suitable for on-site verification of various specifications of single-phase and three-phase (phase separated) electric energy meters.
Basic configuration: 5 (20) A or 10 (40) A; Double clamp configuration: 20 (500) A;
Additional features: 1. Built in load; 2. CT connection (current within 10A); 3. 500A conversion ratio.

Main functions of PS74B handheld single-phase energy meter on-site calibrator

New digital technology enables direct AC sampling of voltage and current for each phase, and measurement of corresponding frequency, phase, power factor, power, and energy error calibration.
Built in test load, completely solves the error verification of electric energy meters when there is no power source on site.
Large screen LCD display with EL backlight, providing clear and intuitive display.
Combining direct buttons with Chinese menus is easy to learn and use.
Self calibration can be achieved by simply adding a standard signal without the need for other instruments.
The data storage function can record the calibration data of 1000 electric meters (energy meters). And it can be directly accessed on the instrument without losing data when turned off.
Dual battery design ensures that clock time and stored verification data are never lost after shutdown.
Borrowing electricity directly from voltage signals. The built-in charger uses a voltage signal as a power source to directly charge the battery.
It has the function of communicating with a PC and can directly upload the verification results of the calibrated table.
Built in real-time clock chip, which can accurately record, display verification and current time.
The unique electric energy accumulation function can verify the constant of the electric energy meter or the speed ratio of the mechanical meter.
There are two ways to verify pulse input: photoelectric pulse converter and manual switch.
Equipped with high-frequency pulse output, convenient for inspection.
Accuracy levels: 0.2, 0.3, 0.5