mass flowmeter for compressed air

Transcription

1 mass flowmeter for compressed air VARIOMASS MF High End electronic for air measurement & analyse - 1 -

2 The VARIOMASS flow meter for compressed air is a comfortable system for air mass flow measurement, which consists of a thermal dispersion sensor and the remote electronic. Customers can use it for accurate compressed air mass flow measurements line size between ½ up to 2 as In-Line sensor with a complete flow body. Furthermore allows it the employment for pipe sizes from 65 mm up to 500 mm as an insertion sensor. Compared with the reliable VARIOMASS air mass flow measurement system do we supply a new field electronic called VARIOMASS MF, which allows simultaneous signal processing of 1 up to 4 sensors. The 4 inputs can use with 4 different mass flow sensors and are moreover able to determine other inputs such as temperature, pressure, relative humidity or dew point sensor. There exist analog and digital outputs for every sensor. The LCD display can simultaneously show for each channel the actual and total flow values. An integrated data logger to determine the current gas mass flow and consumption values is optionally available. This data logger can be read out with a serial interface by using the software VARLOG II. Besides the analog outputs we can supply a pulse output, two programmable relay contacts and digital interfaces like RS 232 and RS 485 optionally available. We additionally supply a digital input that can for example be used for recording the load and unloaded condition of one compressor. The big graphic display (dimensions B*H: 120*65 mm) may also be used for short time online recordings on every channel. This diagram works independent of the data logger and serves to control. The scale takes places over the full scale value of the input channel and dimension. The time period is fixed for about 30 minutes. Every channel can easily be chosen via the keyboard. The clear structured of the menu facilitates the use. A new achievement in the operation is the directly start of the data logger without input of start and stop time. The two counters were extended of the 12 totalizer that can record the air mass consumption per year for each month. A new function for an automatically zero adjustment has been added too. The insertion sensor (here with the option ball valve retractor assembly) can be chosen to measure the air mass consumption in pipe sizes from 65 mm up to 300 mm as sensor for input channel number one. fig.1): Insertion meter with option BVR ½ (ball valve retractor assembly) Additionally or alternatively In-Line sensors with fixed flow body for pipe sizes from ½ up to 2 (50 mm) can be chosen. Optionally is an integrated flow straighter with two plates with wholes for these In-Line sensors available. These can be used for short up and downstream area or for mobile measurements. The advantage of these In-Line sensors is higher measurement accuracy at small pipe diameters

3 TECHNICAL DATA Power supply Ambient temperature range: - 10 C up to + 50 C Protection class: Output signal: Flow units: Normal conditions (N): Media: 90 up to 240 VAC (optional 24 VDC) with max. 32 Watt IP 65 (NEMA 4X) aluminum enclosure with cable glands 0 / 4-20 ma linear equal to each flow range Nm³/h, Nm³/min., Nl/min., Nl/sec., kg/h, kg/min., SCFM, SCFH According to ISO 20 C & 1 bar abs. (optional other) Compressed air (Optional N2, O2, or other gases) Media temperature: 20 C (+/- 20 C) Optional 10 C up to C Media pressure: Max. process pressure: Process connection: Calibration accuracy (with necessary up- and downstream area) Turn down ratio: Repeatability 4 12 bar g. (Optional -1 bar g up to + 40 bar g.) 16 bar g. (Optional up to 40 bar g.) R ½" for Insertion Sensor ½ up to 2 NPT-M thread for In-Line Sensor (Optional DIN or ANSI flanges) 0 80 Nm/sec. (Optional 0 up to 200 Nm/sec.) +/- 2% of reading at turn down ratio of 100:1 within the pressure and temperature range 1:10 up to 1:1000 depends on flow rate +/- 0,5% of reading Wetted material: Stainless steel Pipe sizes In-Line Sensor with flow body for pipe size ½ up to 2 (Optional flow body up to pipe size 200 mm) Insertion Sensor from 65 mm up to 500 mm pipe size (Optional up to 1000 mm pipe size) Up- and Downstream area At least 10 x D and 5 x D, with flow conditioner only 3 x D and 2 x D with D = pipe inside diameter after a 90 elbow In-Line Sensor: Model Pipe size Inside Diameter Flow body Process Standard Flow ranges *** No. DN (Inch) Flow body Length L Thread (optional double) M-2 DN 15 (1/2 ) 15,8 mm 178 mm 1/2" NPT 0-20 Nm³/h (0,35 Nm³/min.) M-3 DN 20 (3/4") 20,9 mm 178 mm 3/4" NPT Nm³/h (1,65 Nm³/min.) M-4 DN 25 (1") 26,6 mm 203 mm 1" NPT Nm³/h (2,5 Nm³/min.) M-5 DN 32 ( 1 1/4") 35,1 mm 254 mm 1 1/4" NPT Nm³/h (4,15 Nm³/min.) M-6 DN 40 (1 1/2") 40,9 mm 381 mm 1 1/2" NPT Nm³/h (5,85 Nm³/min.) M-7 DN 50 (2") 52,5 mm 508 mm 2" NPT Nm³/h (10 Nm³/min.) Insertion Sensor: Model Pipe size * Inside diameter Total ** Process Standard Flow ranges *** No. DN (Inch) To DIN 2458 Flow Area Thread (optional double) M-0 DN 65 (2 1/2 ) 70,9 mm 1 m R ½" Nm³/h (15 Nm³/min.) M-0 DN 80 (3") 83,1 mm 1,2 m R ½" Nm³/h (23 Nm³/min.) M-0 DN 100 (4") 107,9 mm 1,6 m R ½" Nm³/h (38 Nm³/min.) M-0 DN 125 (5") 132,5 mm 2 m R ½ Nm³/h (58 Nm³/min.) M-1 DN 150 (6") 160,3 mm 2,4 m R ½ Nm³/h (83 Nm³/min.) M-1 DN 200 (8") 210,1 mm 3,1 m R ½" Nm³/h (150 Nm³/min.) M-1 DN 300 (12 ) 312,7 mm 4,7 m R ½ Nm³/h (333 Nm³/min.) M-1 DN 500 (20 ) 495,4 mm 7,4 m R ½ Nm³/h (833 Nm³/min.) * bigger pipe sizes on request ** total up- ad downstream area for 10 * D Up- plus 5 * D downstream behind a 90 elbow *** N = Normal Condition to ISO 1217 (20 C & 1 bar abs. & 0% relative humidity) other standard conditions on request - 3 -

4 DIMENSIONS Insertion Sensor: d = 1/2" L = 300 or 400 mm Dimensions of the Insertion meter Fig. 2): Insertion Sensor with Standard Swagelok fitting ½ and distance holder ring Fig. 3): Insertion Sensor with option BVR ½ and a security strap at Plexiglas pipe of 100 mm

5 In-Line Sensor: FLOW L di Fig. 4): In-Line Sensor for pipe size 2 (above) and 1 ½ ACCESSORIES Fig. 5): BVR ½ (ball valve retractor assembly) Fig. 6) flow body without and with flow conditioner - 5 -

6 OTHER SENSOR Pos. External Sensor range Unit Process Max. pressure Max. Temp. 1.0 Temperature 0 to C ½ 25 bar 100 C 1.1 Temperature - 25 to + 80 C ½ 10 bar 150 C 2.0 Pressure 0 10 Bar g ½ 25 bar 80 C 2.1 Pressure 0 40 Bar g. ½ 60 bar 80 C 2.2 Pressure Absolute mbar abs. ½ 1060 mbar 40 C 3.0 Rel. Humidity % ½ 10 bar 50 C 3.1 Rel. Humidity % ½ 25 bar 50 C 4.0 Dew point - 10 to + 50 C tp G ½ 20 bar 50 C 4.1 Dew Pont - 30 to + 20 C tp G ½ 20 bar 50 C 4.2 Dew Point - 80 to + 20 C tp G ½ 20 bar 50 C 5.0 Please quote maximally 3 additional sensors, thus the VARIOMASS MF electronics maximal four inputs own and the first one declared is with a mass flow sensor. The cable length of the additional sensors is the same as the one of mass flow sensor (6, 12, 24 metres or alternatively up to 100 meter). 4 mass flow sensors can also be employed for example to cover pipe sizes from ½ up to 500 mm pipe size or to manage 4 different flow applications with one evaluation electronic. Example: Humidity plus Temperature Sensor as combination for ambient air Options please indicate: flow conditioner for In-Line Sensor 24 VDC power supply of the electronic distance ring for Insertion Sensor BVR ½ with security strap carrying case for mobile measurements isolated inputs board External Sensor (number and specs.) Special calibration (i.e Nm/sec.) Gas name if not air (N 2, O 2, or other) for compressed air f dew point sensor pressure Sensor - 6 -

7 SOFTWARE The software VARLOG II will be delivered with the optional data logger. This program, which is based on MS Windows, can read out the saved data at the data logger of MF electronics with the serial interface. Besides this, the program is able to display the data as a diagram over the time. Furthermore is the user able to set the data logger in the device with this software. The memory of 8 MB is able to record the values in the device as long as 12 months at a chosen record time for each value every 60 seconds. At an insert of maximum numbers of sensors up to 5graphics (for example mass flow) can be represented on one mask. All graphics can be printed directly or the data can be exported to MS EXCEL or MS WORD

8 MODEL NUMBER M Pos. 1) number of Sensor 1-4 pcs. 1 = 1 Sensor, 2 = 2 Sensors aso. Pos. 2) 1 = without and 2 = with Data logger i.e. 42 means 4 Inputs with Data logger cable length Sensor - electronic: 06 = 6 meter (Standard) 12 = 12 meter 24 = 24 meter XX = XX meter (max. 100 meter) Output signal: 00 = Analog Output (Standard) I = pulse output M = M-Bus output K = Relay alarm contacts (2 pcs.) D = digital Input Process connection Sensor: 0 = Swagelok fitting ½ (Standard) bzw. NPT-thread for In-Line Sensor K = BVR ½ (not for In-Line Sensor) F = DIN flanges for In-Line Sensor Z = special Sensor material: S = stainless steel (Standard) pipe size / probe shaft length 0 = DN 65 to DN 300 / L = 300 mm or DN 65 to DN 125 with BVR ½ 1 = DN 300 to DN 500 / L = 400 mm or DN 125 to DN 300 with BVR ½ 2 = In-Line Sensor 1/2" (DN 12) 3 = In-Line Sensor 3/4" (DN 19) 4 = In-Line Sensor 1" (DN 25) 5 = In-Line Sensor 1 1/4" (DN 32) 6 = In-Line Sensor 1 1/2" (DN 38) 7 = In-Line Sensor 2" (DN 50) Z = special VAR MF E Dielen GmbH Zeppelinstr. 9 D Straelen / Germany Tel Fax info@dielen-gmbh.de