- A Manning Model PSB series sampler is suitable
for automatic collection and preservation of composite non-toxic
liquid samples.
- The enclosure is made of structural resin with
NEMA 4X/NEMA 6 ratings and ABS clasps
- All wetted parts have a minimum ID of 1/4-inch
and is stainless steel or PVC (optional strainer), PVC (sampling
hose), and Pharmed• (pump tubing).
- The sampler incorporates a high-speed 1/4-inch
ID peristaltic pump with three rollers to increase tubing life and
improve consistency of sample delivery. The pump body is constructed
of corrosion and impact resistant polycarbonate. The pump mechanism
is clear to enable visual inspection of rollers, pump spindle, and
tubing. Samplers requiring removal of part or all of its pump housing
for visual inspection will not be acceptable.
- Sample liquid is under forced flow at all times
and does not pass through a metering chamber, valves or distribution
plate. It is equipped with a liquid sensing system that calculates
the flow rate of the liquid in the intake line every collection
cycle.
- The sampler is capable of collecting composite
samples. It is equipped with an overflow protection mechanism that
automatically terminates any further sampling once it has been activated.
- Bottle-full condition is detected by using a float-type
switch located in the bottle neck. It is easily removable for cleaning
or replacement without using special tools.
- The sampler is capable of transport velocities
of 2 ft./sec. through 1/4-inch tubing at a draw height of 5 feet
using the 1/4-inch ID pump.
- An optional weighted sampling strainer of PVC
or stainless steel is available.
- A hermetically sealed 24-button keypad and a 2-line
by 20-character alphanumeric backlit LCD linked to a programmable
CPU are used.
- The sampler is powered by:
- The standard internal 12-volt, 7-amp hour
lead acid battery. A power port is available to recharge the
sampler battery or to extend sampler operation from an external
12 VDC power source such as an appropriate auxiliary battery
or car cigarette lighter.
- An optional external 12-volt, 17-amp hour
lead acid battery, or,
- An optional external 110-220 VAC converter.
- The sampler comes equipped with an external battery
charger that can trickle charge the sampler battery while the sampler
is operating. Use of a current-limiting dual-stage charger to prevent
overcharging the sampler battery, diminishing its expected life
is recommended. The charger is:
- The standard basic, linear wall charger for
110 VAC operation that is not current limiting.
- An optional current-limiting dual-stage charger
for 110 VAC operation, or,
- An optional current-limiting dual-stage charger
for 220 VAC operation.
- No unique symbols or codes for programming or
to indicate operating conditions are used. The software is menu
driven, prompting input of requested information using the keypad.
The display indicates each programming step. After entering data,
the system automatically advances to the next programming step.
- A password feature to restrict access only to
authorized persons is used.
- A sampling program is able to be delayed by entering
the number of hours and minutes for the sampler to count down, or
the number of contact closures to occur. The delay is independent
of the sampling interval.
- The sampler purges the sample hose immediately
prior to and following each sample. Purge duration is selectable.
- The sampler has the capability to rinse the sample
hose with source liquid prior to each sample selected by the user.
- If a sample is not obtained on the first attempt,
the sampler immediately retries to collect the sample. If the sample
still cannot be collected, the sampler omits that sample and continues
the sequence.
- The sampler is capable of manual sampling independent
of a programmed sequence when initiated by a keystroke. It logs
manual collections and is selectable to allow taking test samples:
- Only when sampler is not running a program.
- During a program but the test sample is not
counted as a sample.
- During a program and the test sample is counted
as a sample.
- In the time mode, the interval between samples
is adjustable (1-9999 min. in 1 min. increments). In the flow mode,
the sampler accepts and totalizes contact closures (1-9999), a 12VDC
pulsed input or a 4-20mA DC analog signal input for sampling at
a user set point.
- Sampler operating status is reviewed with
minimal effort, and includes:
- Program status
- Current time
- Time and date program started
- Number of samples collected
- Volume collected
- Number of contact closures
- Number off-line blockages
- Minutes or flow signals remaining to the next
sample
- Number of samples remaining
- Volume remaining
- Time to override
All program settings are also reviewed in addition
to seeing the review of the completed program. The sampler has diagnostics
for
RAM, ROM, pump, and distributor.
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