Transonic HT331-FT - Disposable Flow-QC Key (Flowmeter Models: HT314-FT, HT354 & HT364); Invert Function

AU-OPR-AureFloFT-EN,
Rev H
5
1. DISPOSABLE FLOW-QC
®
KEY (FLOWMETER MODELS: HT314-FT, HT354 & HT364)
HT314-FT, HT354 & HT364 Flowmeters are activated by inserting a disposable Flow-QC
®
Key or single
use disposable Probe. When the Meter is turned on and no Flow-QC
®
Key or single use Probe is
inserted, the Meter Display reads “INSERT KEY OR 1X USE PROBE”
Two Flowprobe Tests can be performed without the Flow-QC
®
Key inserted in the Flowmeter.
a) Flowprobe/Flowmeter Compatibility Test. When a Flowprobe is connected to the Flowmeter, the
Flowmeter displays one of two messages:
i) The Flowprobe’s ID such as “HQD3FMC”
ii) “NO PRB” or “NO PROBE” (Meter dependant)
b) Flowprobe Ultrasonic Signal Quality Test. If the Flowprobe
is coupled by immersion in saline or ultrasonic couplant and
the Flowprobe is connected to the Flowmeter, the Flowmeter
tests the transmitted ultrasound signal and displays either:
i) “GOOD SIGNAL”
ii) “LOW SIGNAL”
iii) “X NO SIGNAL” (where X equals the Probe ID).
FUNCTIONALITY OF A FLOW-QC
®
KEY
When a Flow-QC
®
Key is inserted into the Flowmeter without a Flowprobe attached, the Flowmeter
displays either (messages are Meter dependant):
i) “DISCARD KEY” or “DISCRD KEY” indicating that the key has already been used.
ii) “NO PRB” or “NO PROBE” indicating that the key is good but no Probe is connected.
FLOW-QC
®
KEY MEASUREMENT PERIOD
The Flow-QC
®
Key’s 4 hour measurement period begins when a Flowprobe is connected to the
Flowmeter and the Flowprobe’s ultrasonic window is lled with ultrasonic couplant enabling signal
transmission (Fig. 2.3). Once the Flowprobe is coupled (with saline or gel), the Flow-QC
®
Key’s specied
time period begins. At the end of the time, the Flow-QC
®
Key expires. Please note, if the Flowmeter is
unplugged during the measurement period for 20 minutes or more, the Flow-QC
®
Key will expire.
FLOW-QC
®
KEY MEASUREMENT PERIOD EXPIRATION
To warn the user that a Flow-QC
®
Key’s measurement period is ending, the Flowmeter generates two
types of alarms beginning ve minutes before the Flow-QC
®
Key’s ow measurement period is up.
i) Display Alarm as the minutes count down: “TIME LEFT 5 MIN”, “TIME LEFT 4 MIN”, “TIME LEFT 3
MIN”, “TIME LEFT 2 MIN”, “TIME LEFT 1 MIN” then “TIME IS UP”
ii) Audio Alarm during the last ve minute count down: three beeps, once each minute.
FLOW-QC
®
DISPOSAL
When a Flow-QC
®
Key’s ow measurement period is up, the Flowmeter will display “TIME IS UP.” Flow
measurement will continue to be taken until the acoustic transmission is disrupted for more than 15
seconds or the Key is removed. Once the signal is interrupted or the Key removed, ow measurement
stops and the message “DISCARD KEY” or “DISCRD KEY” is displayed. Discard the key immediately, it
can no longer be used to activate the Meter.
2. INVERT FUNCTION
Transonic
®
Flowprobes are bi-directional: they measure forward and reverse ow. If the ow
waveform is upsidedown, the [Invert] button can be used to ip the waveform without having to
adjust the Flowprobe. The indicator light above the button illuminates when the button is pushed and
the invert function is active. The invert function remains active until the button is pushed again or the
meter is powered off.
Fig. 2.3: Perivascular Flowprobe with
Ultrasonic Window Filled with
Ultrasonic Couplant
Functions & Controls