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LIQUIDS and SOLIDS
• Mount the IMP away from any obstructions, falling
water/solids, rough walls, pumps, switches, etc…
• Visualize looking down the echo path of the IMP and
seeing a nice clear shot (2’+ dia.) to the very bottom
during fill and empty cycles.
• Ensure the maximum level does not come within the
minimum blanking distance.
• Confirm the inside of the standpipe is smooth and does
not have any protrusions at the weld.
• Increase the blanking distance 2+ inches beyond the
end of the standpipe where it attaches to the vessel.
• Typically, mount the IMP 1/2 the tank radius.
• Be careful screwing the IMP into a NPT thread and do
not over-tighten.
(Call Pulsar Technical Support for Special Service
Passcode and Instructions 850-609-1777.)
MOUNTING
• Do not over-tighten the threads! Try loosening if level is
reading very high.
LIQUIDS
• Dome top tanks will require First Echo Algorithm.
• If reading false level, use P21 and set true distance.
SOLIDS
• Consult factory if the silo is dusty—we may need to up-
grade to a stronger system.
• If reading false level, use P21 and set true distance.
• If acoustically noisy, change to Largest Echo Algorithm.
IMP PC SOFTWARE
• Warning… in 2-wire mode, inserting the RS232 cable will
result in automatic 20mA output.
Pulsar, Inc., PO Box 799, Shalimar, FL 32579 Phone: (850) 609-1777 Fax: (850) 651-4777 suppor[email protected]
IMP INSTALLATION TROUBLESHOOTING
ESC
(Display invert)
UP
(Temperature)
Down
(Echo Strength)
Enter
(Loop Current mA)
Congratulations on your purchase of a
Pulsar IMP - the low cost integral solution!
This quality system has been developed with the
latest digital ultrasonic technology for liquids,
slurries, and solids. No more noise and beam
angle problems. Also, no handheld programmer
or software required.
It provides non-contacting level and volume
measurement with 2 user-defined relays. Comes
standard as both 2-wire and 3-wire configuration.
Intrinsically Safe loop powered version available
with ATEX approval for hazardous areas.
IMP WIRING
2– wire (I.S. version must use barrier) 3– wire (relays can be used)
Pulsar Quick Start Manual - IMP
3– wire (rarely used as source)
PROGRAMMING
1. Enter Program Mode (Passcode is 1997)
( press and hold each button until the dash appears)
To Program a Relay (pg. 27 of the manual)
Choose “Relay Type” (P210, 220)
0=Not in Use 1=Alarm 2=Control
(Alarm=de-energize ON and energize OFF, Control= is opposite)
Choose “Relay Function” (P211, 221)
0=Off 1=Level 4=Loss of Echo
Choose “Relay Setpoint 1” (P213, 223)
This is the ON setpoint.
Choose “Relay Setpoint 2” (P214, 224)
This is the OFF setpoint.
(no setpoints are required when “Loss of Echo” function is used)
To go to Run Mode, follow Step 3.
3. Calibration is done, go into Run Mode!!!
2. Choose “APP” (pg. 25 in manual)
Choose “Mode of Operation (P100)”
1=Distance 2=Level 3=Space 4=Volume
Choose “Measurement Units (P104)”
1=meters 2=cm 3=mm 4=feet 5=inches
Choose “Empty Level (P105)”
=distance from the transducer face to empty level (bottom of
vessel/pump station) - automatically sets 4mA
Choose “Span (P106)”
=distance from empty level (bottom of vessel) to 100% level
- automatically sets 20mA
Choose “Near Blanking Distance (P107)”
=distance from transducer face that is not measurable (can be
increased to blank out obstructions)
Choose “Far Blanking Distance (P108)”
=distance (in %) beyond Empty Level that is measurable
“rL”
Press both simultaneously,
“PASS” will display briefly,
then “0000” will appear.
For “1000”
For “1900”
For “1990”
For “1997”
This is the “Enter” button. Use the
“Enter”, “Up”, and “Down” buttons to
program the following parameters:
This is the “Esc” button. Use the “Esc”,
“Up”, and “Down” buttons to scroll
through the various categories:
“APP” (Application) “rL” (Relays) “Vol” (Volume)
“DisP” (Display) “LOOP” (mA Output)
“Cop” (Compensation) “StA” (Stability)
“SyS1” (System) “tESt” (Test) (scrolls back to APP)
“run”
Program Relay 1 (P210 - P214) and
then program Relay 2 (P220 - P224)
To Troubleshoot a false echo (pg. 40 of the manual)
To go to Run Mode, follow Step 3.
“SyS1”
Displays “P921”.
Displays “P021” (Get out of Jail Free Card).
Enter the true distance from the transducer
face to the material level.
This will map out all false echoes and store
the information permanently.
IMP PC Software screen shot of echo profile
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