PVS4120CPortable Composite Water Sampler

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概述

The PVS4120C is a lightweight, portable, battery-powered water sampler that deposits its water samples into one container. 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 data loggers to measure a variety of sensors, as well as control the sampler based on time, event, or measured conditions.

Vacuum technology benefits over peristaltic pump samplers:

准确的样品体积
Rapid transport velocities mean more-representative samples
Less disturbance of sample
管道上的磨损最小，导致维护不足
减少了跨样本污染

Lightest composite sampler offered by Campbell Scientific—weighing only 12 kg
侧柄易于抬起（增加直径）
可以轻松运输手工艺品
不锈钢悬架安全带可用于在下水道系统中进行采样
Interfaces with Campbell Scientific data loggers for more measurement and control capabilities

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Detailed Description

The PVS4120C 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.

PVS4120C中的泵比我们较大的型号小。轻量级泵可以在5英尺/秒以上取样，以达到25英尺的水平抽奖。

The enclosure of the PVS4120C 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

Enclosure	Molded medium-density linear polyethylene, three-piece construction and stainless-steel fittings
Integral Battery	115 VAC/60 Hz或12 VDC
Cooling System	Insulated container wall cavity space for ice
高度	80.9 cm (31.875 in.) 96.2 cm (37.875 in.) with extended base
身体病例直径	42.8厘米（16.85英寸）
Sampler Weight	10.4 kg (23 lb) without battery
电池重量	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	8.71 L (2.3 gal)
水平样品传输速度	30.5 m（100 ft）时1.2 m/s（4 ft/s） > 0.8 m/s (2.5 ft/s) at 67 m (220 ft)
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

Controller
Display	2 x 16字符背光液晶
Touchpad	6键（带有多层菜单）
Start Delay	Disabled, Time/Day, Pulse Count, 4 to 20 mA (0 to 100 pulses/min.), External Contact, Level Control
样品启动	Disabled, Time/Day, Pulse Count, 4 to 20 mA (0 to 100 pulses/min.), External Contact, Level Control
程序类型	Composite, Multi-Composite, Consecutive, Daily Cycle, Timed Step
Clock	Real-time clock and operating system
Direct Function Keys	Manual sample, Manual purge, Manual bottle advance, Restart
开关	Controller on/off (SPST toggle)
Available Displays	Real-time clock, process timing, process totals, pulse counting, event response, multilevel descriptions, flashing prompts, diagnostics
Automatic Displays	Container Full, Fault, Power Interrupt (program resumed), Alternating Time Stamp, Cycle(s) abandoned

Compatibility

Controller

The PVS4120C 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 data loggers. Our data loggers can measure nearly any turbidity, water level, or hydrometeorological sensor, as well as control the sampler based on time, event, or measured conditions.