Raven SID-10200 User manual

RAVEN ENVIRONMENTAL PRODUCTS
Sludge Interface Detector
Model SID-10200
Made in USA

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Thank you for purchasing a Raven Environmental Products process
control instrument. Please contact our Customer Service Department
at 800-545-6953 for service or visit us at RavenEP.com.
TABLE OF CONTENTS
Tool Description 3
Set Up 3
Tool Familiarity 3
Sludge Interface Detection 4
Sensitivity Adjustments 5
Fine Tuning 5
Maintenance 6
Troubleshooting 6
Replacement Parts 7
Warranty 7
TOOL DESCRIPTION
RAVEN ENVIRONMENTAL PRODUCTS
333 LEFFINGWELL AVE., SUITE 117
ST. LOUIS, MO 63122 USA
800-545-6953
FAX [phone]
RAVENEP.COM for online ordering and product support

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TOOL DESCRIPTION
The Raven SID-10200 Sludge Interface Detector (SID) is a rugged portable
field instrument specifically designed to detect sludge density and measure
sludge blanket elevation in sedimentation tanks and clarifiers. Precision
electronics and the latest IRED technology enable accurate and repeatable
measurements. Operator features like single-handed operation, belt clip and
onboard cable stowage make it easy to use.
SET UP
1. Switch power-off.
2. Remove 4 screws on faceplate, pull away faceplate to expose case
chamber.
3. Connect battery snap to battery cradle.
4. Inspect the foam gasket attached to the backside of the faceplate. It should
be securely affixed and uniformly routed around the perimeter.
5. Secure faceplate to the case with the 4 screws.
TOOL FAMILIARITY
Before using the SID, take a minute to observe how it works.
Two on/off switches –one for Power and one for Horn.
A single lightbar segment lights up when the SID is powered-on.
Lightbar segments increase with horn as sludge density increases.
Horn may be muted by rotating the sounder vent or can be silenced by the
switch. The probe sensor emits an IRED beam that is invisible and
harmless. Low battery lamp will flash when battery replacement is due.
Quick check
Switch-on the POWER and HORN.
Place your finger over one of the sensor eyes in the probe gap. All lightbars
illuminate and the horn sounds off. The horn can be switched-off without affecting
the operation of the unit.

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To prolong the life of the signal cable, avoid winding it too tightly around the
cable stowage bracket.
It is recommended when transporting the tool to support the weight of the
sensor probe. Do not allow the sensor probe to dangle from the signal cable
while transporting the tool. The sensor probe can be lodged in between the
stowage bracket and the yellow meter during transport.
Never replace less than all six batteries. The tool is most reliable when all
six batteries are replaced with new alkaline AA batteries.
Never allow the faceplate to remain unattached from the yellow meter for
more than 30 minutes. Moisture may corrode the electronics and shorten
the life of the tool. A foam gasket prevents moisture and debris from
entering the meter. The four stainless steel shoulder screws prevent
mashing of the foam gasket.
SLUDGE INTERFACE DETECTION
1. Rotate Sensitivity Knob to position [1] low sensitivity.
2. Lower the SID probe all the way to the bottom of the tank. NOTE: If needed,
increase sensitivity just enough to light up all the lightbars. THIS IS THE
SENSITIVITY BASELINE FOR THIS TANK.
3. Grasp the signal cable at the top of the railing. Using this as a reference
point, slowly raise the SID probe out of the sludge blanket until most or all of
the lightbars go out. At this level, you have detected the sludge blanket
interface.
4. The amount of cable pulled away from the reference point (top safety railing)
represents the height of the blanket from the bottom of the tank.

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SENSITIVITY ADJUSTMENTS
The Sensitivity Knob is used to compensate for varying types of sludge
density.
KNOB SETTING PROBE ATTITUDE SENSITIVITY
1 Ignores the smallest solids Low
5 Detects the smallest solids High
Note: Sensitivity range is set at factory. Range modification instructions
available upon request.
FINE TUNING
Now that you’ve established the baseline sensitivity for this tank, you can fine-
tune the SID by increasing the sensitivity above the baseline.
At the baseline sensitivity setting determined in the previous step, the probe is
exhibiting an “all or nothing” reading.
At sensitivities higher than your baseline, you can detect the ragged edge on
top of the sludge blanket.
By lowering and raising the SID probe in and out of the sludge
blanket interface at various sensitivity settings above your baseline, you will get a
feel for the SID’s “personality” and how it reacts to the particular influents at your
plant.
Sludge blankets rarely have a well defined interface with the supernatant.
Experience with the Sensitivity adjustment will allow the keen operator to measure
the ragged edge of the sludge blanket. It is not uncommon in a dynamic
environment such as a secondary clarifier to identify several feet of gradual density
change on top of the sludge blanket.

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It is interesting to measure the amount of lift the sludge blanket experiences just
after the skimmer passes under the tank bridge. A steady hand lowering the
sensor probe will allow the operator to track the settling of the blanket after the
skimmer passes under the bridge. With experience, you will come to expect a
certain rate of settling after the skimmer passes. Unexpected settling differences
may indicate a process problem.
Always be aware of the skimmer location prior to lowering the sensor probe into
the tank.
Check for uniformity of blanket height by walking the length of the bridge
while maintaining the sensor probe just above the identified blanket.
Please feel free to share with Raven any other creative ways that you have
found to use this interactive tool in your process. Just logon to
Ravenep.com and leave us a note on the Contact page –
[email protected].
MAINTENANCE
Replace all 6 batteries as a group with new AA alkaline batteries of the
same type and brand.
Switch SID power switch-off when not in use to conserve batteries
Store SID for long periods with the batteries removed
Store SID in cool dry place and out of direct sunlight
Clean probe sensor eyes with mild detergent
TROUBLESHOOTING
NO POWER –remove faceplate and verify connections between
battery cradle and printed circuit board.
NO POWER –replace all six batteries with new of same brand
ALL RED LIGHTS ILLUMINATED with no blockage of sensor probe
gap –indicates failure of signal cable. Likely point is near sensor
probe. Bend and wiggle signal cable along five foot section of cable

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starting near sensor probe. If red lights go out or flicker while bending
signal cable, the cable has broken conductors and must be replaced.
See next section for part number. Replacement signal cable and
sensor is simple to replace.
REPLACEMENT PARTS
This tool, well taken care of, will provide many years of reliable service.
NAME PART # UNIT of MEASURE
Signal Cable & Probe SID-10203-n Feet (n = feet)
WARRANTY
Sensor probe and signal cable is warranted for six (6) months from the date
of purchase. If this part should fail during this period of time, Raven will
replace the part at no charge. Raven reserves the right to request proof of
purchase and to examine the failed part at the expense of purchaser to
return the failed part to Raven.
Meter is warranted for one (1) year from the date of purchase. If this part
should fail during this period of time, Raven will replace the part at no
charge. Raven reserves the right to request proof of purchase and to
examine the failed part at the expense of purchaser to return the failed part
to Raven.

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