Diehl Metering Sharky 775 Muayene ve Test Talimatı - Sayfa 3
Ölçüm Cihazları Diehl Metering Sharky 775 için çevrimiçi göz atın veya pdf Muayene ve Test Talimatı indirin. Diehl Metering Sharky 775 18 sayfaları. Ultrasonic energy meter
Sayfayı Yazdır1. 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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