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General| Brand | Elster Instromet |
|---|---|
| Model | RABO |
| Category | Measuring Instruments |
| Language | English |
For calibratable volumetric metering of flammable & non-flammable gases.
Not for metering aggressive gases like oxygen or hydrogen.
Covers type, size, diameter, pressure, temperature, and housing material.
Technical specifications for LF, Wiegand, and HF pulse generators.
Details indexes, rollers, temperature, safety class, and interfaces.
Flow must be free of vibrations/pulsations for accurate measurement.
Adherence to type label ambient conditions is vital for safe operation.
Gas must be dry and free from particles exceeding 50 μm.
Piston shafts/rollers must be horizontal; index rotates 355°.
Avoid dry cloths on index plastic hood due to explosion risk.
Verify caps removed, check for damage, ensure pistons move freely.
Table lists screw sizes, quantities, and tightening torques by DN.
Install gas-tight, in flow direction, unstressed, and weatherproof.
Use original Elster-Instromet parts; Shell Morlina S2 BL 10 oil.
Depressurize, fill slowly, and check oil level in the inspection borehole.
Drain all oil before transporting meter to prevent internal damage.
Fill system slowly to operating pressure (<350 mbar/s rise), use bypass line.
Avoid exceeding measuring range; perform a tightness test.
Use filter initially to catch dirt, remove after 4-6 weeks.
Measure pressure loss to check meter function and detect contamination.
Intrinsically safe generators require ATEX certification and adherence to temperature limits.
