Depth-Integrating Wading Type, US DH-48
click pictures to enlarge
This
is a lightweight sampler for collection of suspended-sediment
samples where wading rod sampler suspension is used. The sampler
consists of a streamlined aluminum casting, 13 inches (33 cm)
long, which partially encloses a pint (0.47 liter) sample
container (sold separately). The sampler weights 4.5 pounds (2
kg) including sample container. A standard 1/2 inch (1.27 cm)
wading rod is threaded into the top of the sampler body for
suspending the sampler. The wading rods come in 1 foot and 3
foot long sections and are sold separately. The wading sampler
is supplied with one 1/4 inch (0.635 cm) yellow color coded,
calibrated, nylon nozzle. The sampler can be supplied with a
special epoxy coating for chemical and trace metal sampling
applications. In the sampling operation, the intake nozzle is
orientated into the current and held in a horizontal position
while the sample is lowered at a uniform rate from the water
surface to the bottom of the stream, instantly reversed, and then
raised again to the water surface at a uniform rate. The sampler
continues to take its sample throughout the time of submergence.
401-001 Sampler, Wading
Type,US DH-48 9 lbs.
401-002 Sampler, Wading
Type,US DH-48E 9 lbs.
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Depth-Integrating Hand Line Type - Model US DH-59 and DH-76
These are medium-weight suspended-sediment samplers for
handline or sounding reel suspension. The DH-59 sampler comprises
a streamlined bronze casting, 15 inches (38 cm) long, which
partially encloses a pint-size (0.47-liter) sample container (sold
separately). This sampler weighs approximately 22 pounds (10 kg),
and is equipped with a tail vane assembly to orient the intake
nozzle of the sampler into the approaching flow as the sampler
enters the water.
The DH-76 is 17 inches (43 cm) long, partially encloses a quart
size (0.95 liter) sample container and weighs approximately 24
pounds (11 kg). The DH-76 comes with an adapter sleeve and can be
used with pint (0.47 liter) sample containers also. The operation
of these samplers is identical to the operation of the DH-48. The
samplers nozzles are calibrated and are supplied in 1/4 inch (0.64
cm), 3/16 inch (0.48 cm), and 1/8 inch (0.32 cm) red color coded
nylon sizes. Sample containers can be furnished with the handline
suspended-sediment samplers. Each sampler is shipped in a hinged,
wooden box suitable for storing and transporting. The samplers can
be supplied with a special epoxy coating for chemical and trace
metal sampling.
401-008 US DH-59 35
lbs.
401-010 US DH-76 40
lbs.
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Depth-Integrating Reel Type, US D-74 and US D-74AL
This is a 64-pound (28 kg) sampler for suspension by cable,
reel, and crane to take suspended-sediment samples in streams up
to 18 feet (5.5 meters) in depth. The sampler has a cast bronze
streamlined body 24 inches (61 cm) long, in which a pint or quart
(0.47 or 0.95-liter) sample container is enclosed. These samplers
also can be cast in aluminum instead of bronze. In this case, the
sampler weighs 30 pounds (13.6 kg), and is designated as the US
D-74AL. The sampling operation is identical to that of the DH-48.
The instrument is suspended on a hanger bar attached to a
stainless steel cable and is lowered and raised by means of a
sounding reel mounted on a crane, cable car or boat. Each nozzle
is calibrated and supplied in 1/4 inch (0.64 cm), 3/16 inch (0.48
cm) and 1/8 inch (0.32 cm) green color coded nylon sizes. Shipment
is made in a hinged, wooden box suitable for storing and
transporting. The samplers can be supplied with a special epoxy
coating. The US D-74 replaces the old model US D-49. The primary
difference was the enlarging of the cavity for the sample
container allowing the sampler to use the quart container or pint
with adapter sleeve.
401-016 US D-74 82 lbs.
401-017 US D-74 AL 50
lbs.
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US D-77 Bag
Sampler
The D-77 Bag Sampler uses a collapsible bag that is placed in a
special slotted 3-L bottle with a US D-77 cap and nozzle assembly
in which the vent is plugged. The slotted bottle is held in the
D-77 sampler body. The D-77 bag sampler uses a mylar sample bag or
TEF (fluorocarbon polymer) bag with 1/4" or 5/16" nozzle.
Flow velocities should exceed 3 ft/s (to collect an isokinetic
sample). Isokinetic capability decreases at flow velocities less
than 3 feet/s. Use in water with depth greater than 15 ft. for an
isokinetic, depth-integrated sample.
Keep a clean, non-contaminating object such as a glass BOD
bottle stopper or a fluorocarbon polymer-coated magnetic stirring
bar in the bag.
The advantage of the D-77 Bag Sampler over the Frame-Bag
sampler is that use of the D-77 Bag Sampler results in a smaller
unsampled zone (distance between the nozzle and the bottom of the
sampler.)
Field calibrate bag samplers each time they are used because
streamflow characteristics vary each time a sample is collected.
401-026 D-77 3L Slotted
Sample Bottle 5 lbs.
401-027 Mylar Sample
Bag 1 lb.
401-028 TEF
Sample Bag 1 lb.
401-029 Field
Calibration Worksheet - Water-proof 0.5 lb.
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Depth-Integrating Suspended Type- US D-77
This is a 65 pound (29.5 kg) sampler for suspension by cable,
reel and crane to take larger suspended sediment or water quality
samples. Originally designed to take samples in streams that are
below freezing, it has mainly been used as a water quality sampler
in its epoxy coated trace metal version.
The sampler has a cast bronze streamlined body which is
completely open in the front to hold a 3-liter plastic container
(sold separately). The section tail enables the instrument to
orient into the streamflow for velocities up to 8.2 feet/sec. A
plastic nozzle cap screws onto the sample bottle and has a tapped
hole to receive a 5/16 inch inside diameter nozzle. An opening in
the nozzle cap is provided to allow air escape as it is displaced
by the sample being collected in the container.
Each sampler is furnished with one D-77 nozzle cap and two
nozzles. Shipment is made in a hinged wooden box suitable for
storing and transporting. The D-77-A1 TEF cap is sold
separately.
The sampler is also available in an aluminum cast body for use
with velocities up to 4.3 feet/sec. and is designated as the US
D-77AL. The D-77AL weighs 25 lbs. The samplers can be supplied
with an epoxy coating for trace metal sampling.
401-023 US D-77 90 lbs.
401-024 US D-77 AL 48
lbs.
401-025 USD-T1-A1 TEF Cap
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USGS
Frame-Bag Sampler
The Frame-Bag Sampler uses a collapsible bag that is placed in
a special slotted 4 or 8 L bottle with a US D-77 cap and nozzle
assembly in which the vent is plugged. The slotted bottle is held
in a plastic-coated metal frame to which various sizes of sounding
weights can be attached. The size of the weight depends on the
stream velocity along the cross section that will be sampled. The
advantages of the Frame-Bag Sampler over the D-77 Bag Sampler are
that the Frame-Bag Sampler can be used to collect a larger sample
volume and, therefore, to sample greater depths. It can be used to
collect samples in streams with greater velocities because heavier
weights can be attached to maintain proper orientation of the
sampler in the stream.
401-035 4-L Frame Bag
Sampler 18 lbs.
401-036 8-L Frame Bag
Sampler 23 lbs.
401-040 4L Mylar Sample
Bag 1 lb.
401-041 8L Mylar Sample
Bag 1 lb.
401-044 4L TEF
Sample Bag 1 lb.
401-042 8L TEF
Sample Bag 1 lb.
401-029 Field
Calibration Worksheet - waterproof 0.5 lb.
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Depth-Integrating Suspended Type- US DH-75
This is a lightweight, freeze-resistant sampler for collection
of suspended-sediment samples where wading-rod suspension is used.
It was designed for use in sub-freezing winter conditions and use
under ice cover.
The open sheet-metal body of this sampler provides easier
removal of the sampler container when ice forms over the sampler
as it leaves the stream. The low mass of the sampler also defrosts
more rapidly than the US DH-48.
The sampler consists of a streamlined plated steel frame. The
sampler weighs 4 pounds (1.8 kgs) including the sample container
(sold separately). An intake nozzle extends horizontally from the
nose of the sampler body. A standard 1/2" wading rod is threaded
into the top of the sampler body for suspending the sampler. The
sample container is held in place and sealed against a rubber
gasket in the sampler head, by a rubber cord at the rear of the
sampler. The instrument can sample to within 3 1/2 inches (9 cm)
of the streambed. The sampler is calibrated and supplied with two
1/4 inch nylon nozzles. The DH-75Q pop sampler is a modification
of the DH-75 allowing it to tilt to a vertical position to permit
use through a 6-inch ice hole to obtain a suspended-sediment
sample.
401-045 DH-75P Sampler
(pint) 4 lbs.
401-046 DH-75Q Depth
Sampler (quart) 4 lbs.
401-047 DH-75H Depth
Sampler (2 L) 4 lbs.
401-048 DH-75 Pop
Sampler 7 lbs.
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Depth-Integrating Wading Type- US DH-81
The US DH-81 is most commonly used for trace metal, biological
or sediment sampling during normal flow in small to
intermediate-size streams or through ice. It uses the US D-77 cap
that has an internally molded vent tube. The DH-81 consists of a
DH-81A adapter and D-77 cap and nozzle. All parts are autoclavable.
This construction enables the sampler to be used for collection of
depth-integrated samples for bacterial analysis. The DH-81 is also
available in all TEF construction as well as a TEF
covered wading rod can be ordered separately.
The DH-81 is useful for sampling during cold weather because
the plastic sampler head and nozzle attach directly to the bottle,
eliminating a metal body and a sampler-freeze up condition. The
DH-81 uses a quart-size glass container and a standard wading rod.
Nozzles are available in 1/8 inch (3.2 mm), 3/16 inch (4.8 mm),
1/4 inch (6.4 mm), and 5/16 inch (7.9 mm) diameter sizes.
401-050 US DH-81 7 lbs.
401-051 US DH-81 TEF 7 lbs.
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Depth-Integrating Suspended Type- US DH-95
The US DH-95 is a lightweight suspended-sediment/water-quality
sampler capable of being used as a hand-line sampler. It is
approximately the same size as the US DH-59 and US DH-76 samplers.
Neither the US DH-59 or US DH-76 can meet the standards for a
"clean" water-quality/suspended sediment samplers.
The US DH-95 weighs approximately 29 lbs. and is 22 inches in
length from the tip of the intake nozzle to the rear of the
tailfin. The unsampled zone, the distance between the centerline
of the nozzle and the streambed, is 4.8 inches. The sampler is
designed to use a one liter TEF or plastic bottle adapted to
the US D-95 cap and US D-77 sampler cap and nozzle. The US D-95
Cap is manufactured from TEF and mates directly to the 1 liter TEF bottle without the use of a bottle adapter. The
external dimensions of the US D-95 Cap are identical to those of
the US D-77 Cap therefore the US D-95 Cap will mate to the US
DH-81A adapter.
The bottle cavity is machined from a low-lead bronze casting
and is coated with plastic. The tail section is constructed from
plastic.
401-055 US DH-95 47
lbs.
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Depth-Integrating Suspended Type- US D-95
The US D-95 Suspended Sediment Sampler is a depth-integrating
instrument designed for use in streams not exceeding 15 feet in
depth and meets the U.S. Geological Survey requirements for water
quality sampling. The sampler is designed to sample at an
acceptable inflow efficiency in stream velocities ranging from 1.5
to 7.5 ft./sec.
The sampler weighs 64 pounds and has a streamlined body that is
26" in length. The bronze body casting is coated with plastic and
the tail section is constructed from plastic to help avoid metal
contamination during water quality sampling. The sampler is
designed to accept either the 1 liter TEF or 1 liter plastic
bottle and the US-95 or US D-77 sediment sampler cap and nozzles.
An adapter is required to mate the US D-77 cap to the 1 liter
TEF bottle. No adapter is required when using the 1 liter
plastic bottle. Four nozzles are available for the US D-77 cap:
5/16, 1/4, 3/16 and 1/8". Nozzles, caps, bottles, and adapters are
not supplied with the sampler and must be ordered separately. A
hanger bar is furnished. The unsampled zone, the distance between
the centerline of the nozzle and the streambed, is 4.8 inches. The
recommended sample volume to be collected with the US D-95 sampler
is 800 ml.
401-058 US D-95 86 lbs.
405-028 Bottle 1 liter,
TEF. Requires adapter to fit US D-77cap. No adapter is
required for use with the US D-95 cap 3 lbs.
401-060 Adapter bottle,
TEF, 1-liter. Used or connecting 1-liter TEF bottle to
TEF US D-77 cap.1 lb.
405-027 Bottle, US
D-77, 3 liter, TEF 5 lbs.
401-064 Cap, US
D-77-A1, TEF. This cap mates directly to the 3-liter TEF
bottle used with the US D-77.1 lb.
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Depth-Integrating
Suspended Type- US D-96
The US D-96 is a bag-type depth integrated
suspended-sediment/water-quality sampler designed to be used with
a crane and reel. The sampler is designed to meet U.S. Geological
Survey requirements for water-quality sampling.
The US D-96 weighs 130 lbs. and is 35 inches long. The sampler
will collect three liters of sample using a perfluroalkozy bag.
The body is constructed of bronze and aluminum with a plastic
tail. Maximum design depth is 39 ft. with a 5/16" nozzle, 60 ft
with a 1/4" nozzle, and 110 ft. with a 3/16" nozzle.
The sample bag is held in a tray that slides into the bottom of
the sampler. This tray can easily be removed to remove the sample
bag. The bag can then either be opened to remove the sample for
compositing or be sealed to ship the entire bag to the laboratory.
401-070 D-96 Bag-Type
Sampler 115 lbs.
401-071 3 L
Perfluroalkozy Sample Bag 0.2 lb.
