Compressed Air-Supply Meter

Transcription

1 Compressed Air-Supply Meter measuring monitoring analysing Completely assembled measuring system for precise supply metering and leakage measurement even with low throughputs Economical with direct mass flow rate measurement Easy to install Measuring accuracy: ±3%, verified by certificate Accurate sensor positioning and defined flow area Nominal sizes: DN 15-DN 100 Low pressure loss 01/ 0502 / Ko /10 KOBOLD offices exist in the following countries: ARGENTINA, AUSTRIA, BELGIUM, BRAZIL, CANADA, CHINA, FRANCE, GREAT BRITAIN, ITALY, NETHERLANDS, POLAND, SWITZERLAND, USA, VENEZUELA KOBOLD Messring GmbH Nordring D Hofheim/Ts. (06192) Fax (06192) info.de@kobold.com Internet: Model: DLV 1

2 Description KOBOLD compressed air-supply meters are supplied in a complete measuring path. The throughput is sensed by a sensor using the proven calorimetric principle. Reproducible flow velocity measurement is achieved with defined and constant sensor installation conditions, constant flow conditions and known inlet and outlet routes. This is a prerequisite for the economical determination of the mass flow with a high degree of measuring accuracy. Pressure correction is not required because mass flow is measured directly. One of the two Pt100 elements in the sensor is heated with a heating control loop by a constant temperature difference over the medium temperature, which at the same time is sensed by the second Pt 100 element. The greater the mass rate of flow, the more heat is dissipated and the more current is drawn. The heating current is therefore a measure of the gas flow rate. It is digitized in the sensor and output as a nonlinear 25 to 100 Hz signal. The nominal-size-specific linearization is stored in the seriesconnected flow computer along with measuring range, analogue output and filter function. Two displays are available for actual flow and for flow metering. A special ball valve ensures that the sensor arrangement is always constant; it also facilitates easy cleaning and sensor replacement. Two types of ball valve are available: fitting and removing the sensor during operation with or without flow interruption. Applications Measuring and recording service compressed air and nitrogen Monitoring and leakage measurement Regulating the air supply from compressors Efficiency measurement Capacity measurement Recording consumption and cost Other gases on request The compressed air-supply meter is calibrated at the factory and supplied fully assembled with a certificate. After fitting and connection to the supply the system is ready for operation. 2

3 Technical details Flow computer and meter Displays: 4-position LCD display for instantaneous value 6-position electromechanical summator with zero button Supply: V AC, Hz, 6 VA Output: (0)4-20 ma, max. load 600 Ω pulse, 1 pulse per Nm 3, RS 485-interface Protection type: IP 65 Ambient temperature: -20 to +50 C Complete measuring path Accuracy: ±3% Sensor: heating-up period for initial startup: average value 30 s Connection: DIN flange DN 15 to DN 100 Max. pressure: 16 bar Operation with replacement fitting: 10 bar Temperature: (operating and ambient) - 20 to +60 C Materials Inlet and outlet pipe section: stainless steel Ball valve: Case: brass nickel-plated or stainless steel Ball: brass nickel-plated or stainless steel Gasket: PTFE Filler plug: stainless steel Union nut: brass or stainless steel Replacement fitting: Case: stainless steel Gasket: FPM Sensor: Case: stainless steel Sensor: polyamide, ceramic, glass-passivated adhesive Fitting with ball valve Sensor installation and removal during operation with flow interruption Model Fitting Measuring range in m 3 N/h Connection..01..= 1.5 to 50..F15..= DN 15 flange..02..= 1.5 to 75..F20..= DN 20 flange DLV-A..1..= Brass..2..= Stainless steel..03..= 2.5 to = 4.0 to 200..F25..= DN 25 flange..f32..= DN 32 flange..05..= 6.2 to 310..F40..= DN 40 flange..06..= 10.0 to 500..F50..= DN 50 flange Fitting with replacement fitting Sensor installation and removal during operation without flow interruption Model Fitting Measuring range in m 3 N/h Connection..01..= 1.5 to 50..F15..= DN 15 flange..02..= 1.5 to 75..F20..= DN 20 flange..03..= 2.5 to 125..F25..= DN 25 flange DLV-B2 Stainless steel..04..= 4.0 to 200..F32..= DN 32 flange..05..= 6.2 to 310..F40..= DN 40 flange..06..= 10.0 to 500..F50..= DN 50 flange = 25.0 to F80..= DN 80 flange = 40.0 to DN 100 flange 3

4 Dimensions Fitting with ball valve Sensor installation and removal during operation with flow interruption LK1 fitting brass (drawing: brass) LK2 fitting stainless steel filler plug Inlet pipe section Outlet pipe section H K D H1 DIN 2566 threaded flange connector ELKA 40 power supply cable cable LIYCY 3-wire, 0.25 mm 2, shielded Model DN [mm] G [inch] D [mm] K [mm] LK1 [mm] LK2 [mm] H1 [mm] H (mm) DLV-A...01F / DLV-A...02F /4 105 DLV-A...03F DLV-A...04F /4 140 DLV-A...05F /2 150 DLV-A...06F

5 Fitting with ball valve Sensor installation and removal during operation without flow interruption Outlet pipe section D K DIN 2566 threaded flange H1 max. travel 25 mm O-ring Sensing element can be removed (Service) L Sensing element in medium Inlet pipe section Model DN [mm] G [inch] L [mm] D [mm] K [mm] H1 [mm] DLV-B2 01F / DLV-B2 02F /4 475 DLV-B2 03F DLV-B2 04F /4 713 DLV-B2 05F /2 878 DLV-B2 06F DLV-B2 07F DLV-B2 08F1H 1H

6 Flow indicators can be found......in our brochure S6 6