Q: Can I use the GDP E304 LEEA Harris Portable for overhead lifting as a primary safety device? A: No—this is a monitoring device, not a safety device. It tells you the load; it does not prevent overload. You still need a crane with a functional overload limiting device (OLD). However, the GDP E304 is ideal for verifying that the OLD is working correctly.
Q: Is the “Harris Portable” waterproof enough for offshore use? A: The standard unit is IP67, which is rain and splash-proof. For continuous immersion or saltwater deck use, you need the optional “Marine” variant with IP68 connectors and a sacrificial zinc anode. gdp e304 leea harris portable
Q: How does the LEEA certificate come with the GDP E304? A: Each new unit ships with a signed LEEA Certificate of Conformity and a calibration report showing as-found and as-left data. Keep this in your lift file. If you lose it, you can request a digital copy from the Harris serial number database for a small fee. Q: Can I use the GDP E304 LEEA
Q: Can this unit measure compression as well as tension? A: Most GDP E304 LEEA Harris Portable units are tension-only (load cells). If you need compression (e.g., weighing a silo or testing a jack), you require a different model—specifically the GDP C305 series. Do not invert a tension load cell to measure compression; it will void the calibration. In practical terms, when you search for "GDP
Why does the keyword include "Harris"? For decades, crane operators and oil rig workers trusted Harris for portable tension meters like the "Harris DYNA-LINK" and "Harris Model 9500." While GDP may manufacture the electronics, the "Harris Portable" descriptor signals:
In practical terms, when you search for "GDP E304 LEEA Harris Portable," you are looking for a complete mobile load testing kit—not a stationary bench scale.
The LOLER regulations (in the UK) and ASME B30 standards (in the US) require thorough examination of overhead cranes every 6 to 12 months. Using a GDP E304 portable load cell, an inspector can test the crane’s overload cut-off switch safely, verifying that the crane trips at exactly 110% of rated capacity.