Liquid to be sampled flows into the sampling chamber through a 2" NPT line. After thorough mixing, it flows over an adjustable weir to waste through a 3" NPT line. Flow into the sample chamber may be by either gravity flow or by pumping and is exhausted to waste by gravity in either case. Flow through the sample chamber should be from ten to thirty gallons per minute. Samples are collected from the flowing liquid in the sample chamber by oscillating, constant volume dipper.
Control is provided by an on-board Programmable Logic Controller (PLC) which may be programmed for time cycle sampling or proportional sampling with an external contact making or 4-20madc flowmeter. The dipper periodically enters the liquid and removes a 20 ML sample at which point it returns to the raised position. Collected sample flows out of the dipper, through the sample transfer tube to the sample storage container. The sampler is provided with an integral refrigerator to maintain the sample storage temperature at no more than 5°C. A precision temperature regulator is set at the factory for 4C° +/- 1°C.
The following controls are provided
PLC (Programmable Logic Control):
This control may be programmed as either a timer or counter. In the timer modes it is set with the
required period between samples. In the flow mode it will totalize up to 9999 counts or impulses
from a remote flowmeter (by others) or 4-20milliamp signals from flowmeter (by others.).
TEST push button:
This is used to check sampler operation or to collect grab samples.
It does not effect the automatic operation settings. Green sample light is lighted during sample collection.
Sample Counter located on PLC:
Sample counter indicates number of samples collected. It may be adjusted to suit installation. It
must be reset at start of each new composite.
Sample Chamber:
The sample chamber is fabricated of virgin, unplasticised PVC plate. This is welded by a combination
of hot nitrogen and chemical welding. The chamber is divided into two parts by an adjustable weir.
Chamber turbulence keeps liquid well mixed for collection by the sampling dipper.
Sample Dipper:
Individual samples are collected by an oscillating, constant volume dipper which enters the liquid
only at the moment of sampling and then is raised clear of the liquid to transfer sample to the
sample container. Sample dipper is cast aluminum with a baked on Teflon™ coating.
Sample Collector Assembly:
Collected sample is delivered to the sample container by a combination collector funnel and depth
gage. This is cast aluminum with a baked on Teflon™ coating. The sample collector includes a
shut off valve to be used when the sample chamber is to be cleaned or sterilized.
Dipper Drive Mechanism:
The dipper is raised and lowered by motor located under the sample chamber. The motor is
hermetically sealed and operated submerged in an oil bath and is rated NEMA4X (IP65).
Technical Specifications
Inlet connection: 2”NPS with flexible connector
Effluent connection: 3”NPS with flexible connector
Dimensions 20"H x 16"W x 10"D
(over all dimension depend on refrigerator used
Weight 26 lbs (without refrigerator)
Materials of Construction:
Sample Chamber Rigid, Unplasticised PVC
Sampler Control Housing Compression Molded Fiberglass
Programmer Housing Rating NEMA-4X (Self Certified)
Would you like to place an order or request prices?
For more information, please write
nconsys@n-con.com
(800) 932-6266 FAX: (706) 743-8114This page was last updated on November 7, 2007