WILDLIFE AquaPulse Impulse Counter User manual

IOP 017C.1
Effective Date: 1/179/2020
Replaces IOP 017C.0
Page 1 of 2
U.S. Fish and Wildlife Service
Marquette Biological Station
3090 Wright Street
Marquette, Michigan 49855
U.S.A.
and
U.S. Fish and Wildlife Service
Ludington Biological Station
5050 Commerce Drive
Ludington, Michigan 49431
U.S.A.
and
Fisheries and Oceans Canada
Sea Lamprey Control Centre
1219 Queen Street East
Sault Ste. Marie, Ontario P6A 2E5
Canada
INSTRUMENT OPERATING PROCEDURE
INSTRUMENT:
Stream Flow Current Meter Sensor
MODEL:
AquaPulse Impulse Counter/Timer
MANUFACTURER:
Rickly Hydrological Co.
PRECAUTIONS:
Unit is water resistant only. Take precautions to avoid excess rain exposure.
If dropped in water, open back cover and dry with a hair dryer as soon as possible.
POTENTIAL INTERFERENCES
Dirty or corroded phone plug on gauging rod. Clean with steel wool.
If battery is low, the decimal point in the time display will turn off. Open battery compartment on back of
computer and replace 9-volt alkaline battery.
If display locks up, disconnect and reconnect battery and resume operation.
SAFETY
No special safety concerns

IOP 017C.1
Effective Date: 1/179/2020
Page 2 of 2
PROCEDURES:
1. Connect the AquaPulse to the top of the wading rod.
2. Press the ON/SELECT button to turn unit on.
3. Press the ON/SELECT button to cycle through time intervals until you get to either 100 or 200
seconds.
4. Place current meter at desired location in the stream and press “Count/Stop” to begin the counting
process. The unit will begin counting after the first impulse and the time and revolutions will be
displayed.
5. After at least 40 seconds has elapsed and the number of revolutions reaches one of the numbers on
the standard rating table (3, 7, 10, 15, 20, etc.), press the Count/Stop button. The revolution will
be displayed in the Count window and the time will be displayed in the Time window. Record
the revolutions and time (rounded to the nearest second) on a discharge measurement form.
6. Use the USGS Standard Rating Table 2 to find the velocity. Record velocity on a discharge
measurement form.
7. Go back to step 3 for next measurement.
MAINTENANCE:
Replace battery when needed.
Wipe with dry soft cloth before storing.
REFERENCES:
Rickly Hydrological Co. AquaPulse Impulse Counter/Timer Instruction Manual.
This procedure has been reviewed and approved by the undersigned representative of the U.S.
Fish and Wildlife Service.
REVIEWED/APPROVED______________________________ DATE____________
Field Supervisor (U.S.)
Jessica M. Barber
Digitally signed by
JESSICA BARBER
Date: 2020.03.10
11:22:55 -04'00'