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1.4.3 Power supply and battery charging
Operating power is provided by an internal battery that can be charged from the utility supply using the supplied
external charger. When you first receive the unit you must put the battery on charge for a minimum of 6.5hrs
before use. A fully charged battery will power the instrument for up to 20hrs depending on the output utilisation
and backlight usage.
If the backlight has been enabled the display is illuminated for 10 seconds every time a key is pressed. If the
backlight is active continuously it would reduce the available battery operating time to 8hrs. Similarly, if the 4-
20mA output is used constantly at 20mA, the battery life would reduce by 20%. It is therefore beneficial to turn off
the backlight and 4-20mA output facilities when they are not required.
When the instrument is operating in the ‘Flow Reading’ mode the percentage battery charge level is displayed
symbolically on the LCD screen. A warning message is triggered if the charge falls to approximately 30%, at
which point there is up to four hours of battery operation remaining, depending on usage. The battery can be
charged both while the instrument is in use or when switched off. The instrument’s internal data is stored in non-
volatile memory and will not be lost even if the battery discharges completely.
Key Point:
The battery is not a user-changeable item. The instrument must be
returned to your distributor if the battery needs replacing.
Key Point:
Only use the supplied charger, or special adaptor lead. Failure to comply
with this will invalidate your warranty.
1.5 Transducers
Two sets of ultrasonic transducers are provided as standard. When setting up the instrument it will indicate the
appropriate transducer set to use for a particular application, depending on data entered by the user. Default pipe
ranges are programmed into the instrument and most of the time there will be no need use an alternative
transducer set to the one suggested by the instrument. However, if circumstances dictate that a different set must
be used it is possible to manually programme the instrument to accept the alternative set.
Key Point:
Each transducer set has its designed working parameters and there are
limitations as to how far these can be extended in the field without degrading the
instrument’s sensitivity and accuracy. Contact Greyline for advice if needed.
Transducer set 'A'
Supplied as standard for use on pipes 0.51” to 4.525” (13mm to 115mm) outside diameter.
Transducer set 'B'
Supplied as standard for use on pipes 1.97” to 78.74” (50mm to 2000mm) outside diameter.
Transducer set 'D'
Type 'D' transducers are optional equipment that can be used by the Portaflow PT500 on pipes from 59” to 196”
(1500mm to 5000mm). They are supplied complete with ratchet straps for ‘diagonal mode’ attachment.
