Diehl Metering Sharky 775 Instruções de inspeção e teste - Página 3
Procurar online ou descarregar pdf Instruções de inspeção e teste para Instrumentos de medição Diehl Metering Sharky 775. Diehl Metering Sharky 775 18 páginas. Ultrasonic energy meter
Imprimir página1. General information
The following tests and adjustments are possible:
Volume
Energy
The start/stop calibration can be performed manually or by communication. The meter can also be
calibrated on a NOWA test rig. If ZVEI is selected as the communication method, a wake-up
sequence is necessary as per EN 1434 (2.2 s 010101... Sequence at 2400 bauds).
The meters can be evacuated to remove air. The evacuation time must not exceed 2 minutes.
Both temperature sensors must be continuously connected to the meter during the volume test.
The temperature sensor which belongs to the flow- sensor (e.g. for return meter the return sensor)
must have the water temperature at flow calibration.
Note: A wrong water- temperature influences the flow calibration!
The displays for volume test and energy test are high-resolution displays, i.e. a factor of 1000 times
better than "normal" display resolution. The decimal point and unit are displayed correctly in both
modes.
Storage mode:
The storage mode is activated if the meter is without water for a day. The meter must be filled with
water for min. 1 minute to leave storage mode.
Test volume:
The following test volumes and times must be observed:
Flying start/stop:
Standing start/stop:
Test Ccondition:
It is necessary to an adequate rinsing of the test bench in front of the volume test. Effective rinsing is
done with nominal flow rate for at least 60s.
A multiple opening / closing the valves support the vent system.
For installation of multiple meters at the test bench is a distance of 5 DN between the meters is
recommended.
The inner diameter of the pipes and adapters between the meters at the test bench shall be 15mm for
DN15 meter, 20mm for DN20 , and so on.
Industriestraße 13
91522 Ansbach
Deutschland
Tel. +49 981 18 06-015
www.diehl.com/metering
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180 seconds
60 seconds
360 seconds
120 seconds
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