Dynasonics 902_903 Series Portable Doppler Ultrasonic Flow Meter - Manual (Page 11)

Rev. 10/08
- 9 - D902/3
PART 2 - PRE-INSTALLATION CHECKOUT
After unpacking, it is recommended to save the shipping
carton and packing materials in case the instrument is
stored or re-shipped. Inspect the equipment and carton for
damage. If there is evidence of shipping damage, notify
the carrier immediately.
The D902/3 flow meter can be checked for basic
functionality using the following Bench Test procedure. It
is recommended that this operation be performed before
each day of operation.
Procedure:
1. Open the D902/3 transmitter cover.
2. Connect the transducer cable connector plug to the
corresponding connector socket located on the side of
the D902/3 enclosure. See Figure 3.
3. Set the transmitter SENSITIVITY control (located on
the front panel) to -2.
4. Apply power.
5. Hold the transducers, the flat sides facing each other,
approximately 6 - 8 inches (150 - 200 mm) apart.
6. Move the transducers towards and away from each other
1 inch (25 mm) for several cycles at approximately 1
second intervals.
7. If unit is functioning properly, the READ LED will
illuminate and the rate display will indicate flow
readings.
Bench Test is Complete
Unpacking
Functional Test
Figure 3
Transducer Connection