GF438II Handheld Power Quality Analyzer

The GF438II is a handheld three phase power quality analyzer with a 6000A current probe, for locating, predicting, preventing and troubleshooting power quality problems in three-phase and single-phase distribution systems, as the manufacturer states. The manufacturer's category page describes a patented energy-loss algorithm, unified power measurement, and GFUVE_PQA software.

A shop parameter table for the same model lists a 3-second statistical interval, continuous recording of 728 hours, up to 32GB storage, up to 1000 power energy parameters simultaneously, up to 10000 screenshots, 4 voltage and 4 current input channels, voltage ranges 120, 230, 400 and 1000V, frequency 50/60Hz, IEC 61000-4-30 method and Class A level, IEC 61000-4-15 flicker and IEC 61000-4-7 harmonics, safety CAT III 1000V and CAT IV 600V, size 263 x 168 x 65mm, weight 1.6kg, battery up to 6 hours with a 5-hour recharge, and a 640 x 480 display. These are the shop listing's figures for this model, stated here as such.

No single accuracy figure is stated for this model on this page. The reference material behind this site gives different accuracy figures for voltage and current in different parts of the same shop listing, and the manufacturer's category page gives no accuracy figure. The analyzer measures voltage and current with clamp-dependent accuracy; ask for the model datasheet to confirm the accuracy that applies to the clamps you will use.

Item and specification

How to select

Choose the GF438II when field troubleshooting needs a handheld analyzer with recording and a high-current probe, and when the measurement method must follow IEC 61000-4-30 Class A. Check the current probe range against the circuits you will measure, the recording time against the monitoring period, and the storage against the number of parameters you will record at once.

Before payment, confirm the model, the probe range, the accuracy that applies to those clamps (from the datasheet, in writing), the quantity, and the delivery terms. No price, minimum order or lead time figure is stated here; confirm each in writing with your inquiry.

Records and comparisons

Keep a record for every test this instrument performs. A useful record states the instrument model, the device under test, the test settings, the results, the date, and the person who ran the test. Records of that form can be checked months later, when a result is questioned or a device is retested after repair. A record that only says pass or fail cannot be checked, and a test that cannot be checked will eventually have to be repeated.

When comparing this model with a neighbouring model from the same family, compare the same items for both: the test functions, the ranges, the accuracy class, the display and output features, and the standards referenced. A comparison that uses one model's headline figures against another model's detailed figures is not a comparison. Ask for the current datasheet for each model under consideration, and compare datasheet against datasheet.

If the instrument will be used by more than one person, agree who owns the test records and where they are kept before the first test. Shared instruments with private records produce results that cannot be checked by anyone except the person who ran the test, which defeats the purpose of keeping records at all.

What to confirm before ordering

Before payment, confirm the model, the specification from the current datasheet, the quantity, the price, the lead time, and the delivery terms, in writing. Ask in your inquiry to confirm the payment terms, the trade terms, and the reply time you should expect, rather than assuming any of them. No price, minimum order or lead time figure is stated on this site.

Notes

This page makes no certificate claim for the company or the product. Standards named here are measurement method references from the source pages, not company certifications.