Katalog Produk

(Gambar)

Keterangan

Since 1930 the Petersen Grab has been used in fresh water for collecting macroscopic fauna in sand, gravel, marl, clay or clay combinations. Widely used over 6 decades, it’ s ideal for comparing data collected previously by a Petersen Grab.
Vent holes permit water to flow through while the grab is being lowered, minimizing diagonal movement as well as reducing the frontal shock wave generated by descent. Jaws close clamshell fashion. We include a safety-pin latch to prevent the scoop from closing to help prevent injury. The bayonet-style trip mechanism is designed to release only when the sampler is on the bottom and the cable is slack. This is a deliberately heavy device for biting deep into hard bottoms and can hold up to 6 removable weights for even more oomph. Operation requires winch and crane due to the working weight.
Petersen must be used in 7 m or large boats with winch and crane at minimum and only in low wave.

Sesuai untuk sampling dasar perairan berupa pasir, kerikil, dan ranting-ranting.

Model : APAL - PGB
Specification ;
- Material: Zinc Plate Steel
- Weight & volume : approximate 30 kg / 98900 ml Volume
- Sample area : 305 x 305 mm
- Include : Manual and wood case
- Optional : Hand winch and galvanic sling line 4 mm