FMTB Series Flow Meter Group Principle
The FMTB series works uniquely. Using digital signal processing with a sample rate of 250 kHz it permits a start/stop time measurement on any pulse transition for both the Meter Under Test and the reference meters. In this way, a stream of test data is collected and analyzed in a short time producing reliable values.
Because of the short test time, the result is not influenced by changes in environmental conditions such as thermal expansion due to temperature changes. A large amount of data in combination with smart algorithms make it possible to calculate average values and filter out unreliable measurements.
The complete system is operated by a small but powerful computer in combination with a bus system for controlling all analog and digital in- and outputs. In the sensor box, it is possible to sample 4 pulse outputs of the Meter Under Test simultaneously.
A silencer is used to overcome interaction or interference between the Meter Under Test (especially rotary gas meters) and the reference meters. High-end replaceable dust filters protect reference meters from pollution. The reference meters are specially designed and manufactured to guarantee the highest accuracy and best performance.
The FMTB series is suitable for testing several meter types in a large flow range. This makes the FMTB series attractive for manufacturers of gas meters and test laboratories, and also for companies with many fields installed gas meters that have to be checked periodically.
The compact design makes it possible to place the test bench in a small area. Due to the small volume of the FMTB and short test times the line pack effect (thermal expansion of the volume between the Meter Under Test and the reference meters during the test) is reduced to a minimum.
- Set of travel standards
- Side connection to calibrate multiple diaphragm meters in series.
- Lower minimum capacities
- Side inlet on the upper header for second MUT position
- Calibration by independent institutes like VSL, PTB or equivalent
- Technical training at manufacturer location or on-site including certificate of participation
- On-site commissioning
FMTB Series Flow Meter Group Technical Specification
|Type||Flow range (m3 /h)||Number of master meters||Power supply (Vac)||Dimensions W x D x H (mm)||Weight (kg)|
|FMTB-B650/IO||0,25 – 650||2||200 – 240||1350 x 1150 x 1500||500|
|FMTB-B1000/IO||0,25 – 1000||2||380 V 3 phase||1350 x 1150 x 1500||500|
|FMTB-B1600/IO||0,25 – 1600||3||380 V 3 phase||1350 x 1150 x 1500||600|
|FMTB-B2500/IO||0,25 – 2500||3||380 V 3 phase||1350 x 1150 x 1500||650|
Download Catalog: FMTB series-flow meter group