ARD
INDUSTRIAL METER
Application
Diehl Metering offers a modular system based on the volumetric technology. Modules are available in various materials and can be easily assembled. A large choice of materials, adapted to the nature of the measured liquid, can be proposed for each measurement problem.
Modular system gives the possibility to exchange or add one or several pulse emitter modules.
Measuring chamber and rotary piston control and cleaning operations can be carried out on the site, without dismounting the ARD meter from the pipe. It's possible to integrate a heating device in the measuring chamber according to the type of liquid to be measured. These meters have an important measuring dynamic and even very low flowrates are recorded with precision.
Features
- Volumetric meter
- Possibility to measure various liquids
- High measurement dynamics
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Technical characteristics
Nominal diameter DN mm 15 20 25 40 50 Nominal pressure**** bar 10..40 (4) 10..40 (4) 10..40 (4) 10..40 (4) 10..40 (4) Operating temperatures range**** °C 40..180 (4) 40..180 (4) 40..180 (4) 40..180 (4) 40..180 (4) Max. flowrate l/h 400 1500 3 000 9 000 30 000 Discontinuous flow l/h 320 1200 2 400 7 200 24 000 Continuous flow l/h 200 750 1 500 4 500 15 000 Min. flowrate** l/h 10 30 75 225 750 Min. flowrate*** - aluminium piston l/h 10 37.5 75 225 750 Min. flowrate*** - ebonite/graphite/stainless piston l/h 20 75 150 450 1 500 Min. flowrate*** - PPS/PTFE piston l/h 40 150 300 900 3 000 Starting flow l/h 4 12 30 90 300 Volume of the measuring chamber (cyclical volume) cm³ 12 36 100 330 1 200 Verification step l 0.01 0.1 0.1 0.1 1 Recording capacity m³ 1000 10 000 10 000 10 000 100 000 Max. recording time with continuous flow and no reset h 5000 13 333 6 666 2 222 6 666 Width of the safety filter mesh mm 0.4 0.4 0.4 0.8 0.8 Max. width of the impurity collector mesh mm 0.1 0.1 0.25 0.25 0.25 * For chemical liquids up to approximately 10 000 mPa.s
** For light fuel oil meter with measuring chamber in brass and a piston in aluminium
*** For other liquids and piston materials and measuring chamber
**** According to construction materials -
Metrology
Error tolerance of the instantaneous value between Qmax and Qmin % ±0.5 Repeatability % ±0.1 Metering in both flow direction Yes Straight length Not necessary -
Assembly
Rotary piston meters may be fitted on all positions but the dial of the register must never face down. No straight length before or after the meter is required. Meters with a register must be installed to be read easily. Rotary piston meters are precision instruments and must always be protected by an impurity collector or a filter. The mesh width must be less than 100 microns (0.1 mm).
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Dimensions : Thread version
Nominal diameter DN mm 15 20 25 40 50 a 165 165 190 300 350 b 45 54 77 116 166 c 20 20 24 35 41 Øf 105 105 130 210 280 Øe 95 105 115 150 - Øp 3/4" 1" 1-1 / 4" 2" 2-3/8" Weight Kg 2.1 2.5 4.2 16 36 -
Dimensions : Flange version
Nominal diameter DN mm 15 20 25 40 50 a 165 165 190* 300 350 b 45 54 77 116 166 c 20 20 24 37 43 d - - 107 140.5 - Øf 105 105 130 210 280 Øe 95 105 115 150 165 g - - 26 38 - Øj - - 160 210 - Weight Inox Kg 4.5 5.5 8.5 21 40 Weight synthetic Kg - - 10 23 - *Only for metal housing, for synthetic housing length is 260 mm. -
Pressure loss graph
