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Trang chủ   /  THỦY VĂN   /  Thiết bị lấy mẫu nước tự động PVS4120D

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Thiết bị lấy mẫu nước tự động PVS4120D

Mã sản phẩm : 1489836941

The PVS4120D is a lightweight, portable, battery-powered water sampler that deposits its water samples into 24 containers. It includes a programmable controller with 16-key intuitive touch pad. The controller can accept a pulse input (e.g., rain gage), a 4 to 20 mA signal (e.g., flow meter), or initiate a sample on a timed basis. The sampler can also be interfaced with our dataloggers to measure a variety of sensors, as well as control the sampler based on time, event, or measured conditions.

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  • CAMPBELL SCIENTIFIC, INC.

    Benefits and Features Lightest discrete sampler offered by Campbell Scientific—weighing only 12 kg Vacuum technology benefits over peristaltic pump samplers: Accurate sample volumes Rapid transport velocities mean more-representative samples Less disturbance of sample Minimal wear on the tubing, resulting in less-frequent maintenance Reduced cross-sample contamination Side handles for easy lifting (increases diameter) Handcart available for easy transport Stainless-steel suspension harness offered for sampling in sewer systems Interfaces with Campbell Scientific dataloggers for more measurement and control capabilities Detailed Description The PVS4120D uses an external vacuum pump to draw water through intake tubing, instead of the traditional peristaltic pump that induce flow by squeezing flexible tubing. Advantages of the vacuum pump method include faster sampling rates, longer sampling distances, and less maintenance. Because the vacuum method disturbs the water samples less, they better represent the original water solution, especially if the solution has high concentrations of suspended solids. The pump in the PVS4120D is smaller than our larger models. The lightweight pump is able to take samples at over 5 ft/sec for horizontal draws of up to 25 ft. The enclosure of the PVS4120D is a molded medium-density linear polyethylene, designed to handle tough environmental challenges and weathering. The hub has an insulated ring and a cavity for crushed ice, giving more control over the temperature of the samples.   Specifications General Enclosure Molded medium-density linear polyethylene, three-piece construction and stainless-steel fittings Integral Battery 115 Vac/60 Hz or 12 Vdc Cooling System Insulated container wall cavity space for ice Body Case Diameter 42.8 cm (16.85 in.) Height 80.9 cm (31.875 in.) 96.2 cm (37.875 in.) with extended base Sampler Weight 10.4 kg (23 lb) without battery Battery Weight 1.8 kg (4 lb) Vacuum System Pinch Valve Fixed – normally open Purge Cycle Adjustable from 5 to 99 s Suction Cycle Variable (Adjusts automatically to double the input value of the purge time setting or until liquid contacts level electrode in metering chamber.) Sample Volume Adjustable, 50 to 250 cc Horizontal Sample Transport Velocity 1.2 m/s (4 ft/s) at 30.5 m (100 ft) > 0.8 m/s (2.5 ft/s) at 67 m (220 ft) Horizontal Sample Transport Maximum Distance 67 m (220 ft) Metering Chamber Cover Nylon Volume Control Tube 316 stainless steel Metering Chamber Level Electrode 316 stainless steel Discharge Hose Material Latex

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