Titan Metraflow 240-020, Инструкция по эксплуатации

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©Titan Enterprises Ltd 2018 www.flowmeters.co.uk MetraflowManual_v1219
Advanced User Tab
Interface Management:
This allows the operator to restrict access to the configuration of each meter.
Protect (with PIN) Advanced Features Only: Allows users to restrict access to advanced pages.
Protect (with PIN) all controls: Allows users to restrict all configuration modifications to the system.
To use these features it is first necessary to create a PIN. This is a four digit number in the range
0001 to 9999. Setting a value of 0000 tells the software there is no PIN and this is how to remove the
PIN. After allocating a PIN these check boxes can lock all of the settings or just the advanced user.
If you forget your PIN please contact you supplier for the default value. Once entered, all the setting
parameters remain visible. In the ‘Help’ menu, the user can ‘Log On using PIN...’ but the user will be
prompted for the PIN prior to making any changes.
Zero Null Feature
There will always be a small amount of “background noise” due to ultrasound remaining within the tube
between successive pings. This should be zeroed for best accuracy.
The noise affects low end performance and accuracy across the whole temperature range. The meter
is calibrated at ambient temperature, typically 21 to 25°C. To zero the background noise, fill the meter
with fluid under pressure at the desired metering temperature and use the Zero Null Feature: