mass flowmeter for compressed air

Transcription

1 mass flowmeter for compressed air VARIOMASS ECO pressure and temperature compensated easy and cost effective installation of the sensor no pressure loss caused by the sensor no moving parts, i.e. maintenance free high turndown ratio and good accuracy

2 The VARIOMASS ECO system is a compact mass flowmeter for compressed air working according to the thermal dispersion principle for pipe sizes from ½ up to 2 as In-Line meter with complete flow body and for pipe size 2.5 (65 mm) up 20 (500 mm) as an Insertion meter. Compare to the original VARIOMASS flowmeter we do not need a separate electronic with sensor cable so it will reduce the installation cost and also the system price. The microprocessor controlled electronic is within the sensor head enclosure and has a 24 VDC power supply so there is no need for installation of the separate transmitter enclosure. All analog and digital outputs are on the sensor circuit board and via the optional software WIN-ECO and the USB port with a PC the user can readout and change all preset values or can use the PC as a data logger for the flow values data s vs. time. An optional LCD display with 2 x 16 sign can be mounted within the sensor enclosure lid to indicate the actual and total flow values with flow units. The analog outputs (0-20 ma or 4-20 ma) transmit the actual flow values and the optional pulse output (example 1 m³/puls) gives you the total flow value to a pulse counter. TECHNICAL DATA Power supply 24 V DC max. 8 Watt Ambient temperature 0 to + 45 C Protection class IP 65 / NEMA 4X aluminum enclosure with PG cable gland Output signal 0 / 4-20 ma linear equal to the flow range 0 to 100% Flow rate units Nm³/h, Nm³/min., NL/min. or SCFM Norm / Standard conditions (N) According to ISO 1217 of 20 C & 1 bar abs. (optional 0 C) Media: AIR at 4 to 12 bar g (optional other gases or pressure ranges) Media temperature range: 20 C (+/- 20 C) Optional other temp. ranges possible Max. Working pressure 16 bar g (Optional up to 40 bar g.) Process connection R ½" for the Insertion Sensor and ½ up to 2 NPT-M thread for In-Line Sensor or R 1 or R 2 Accuracy +/- 2% of reading with turn down ratio of 100:1 Turn down ratio 10:1 up to 800:1 depends on the flow rate Repeatability +/- 0,5% of reading Wetted material Stainless steel (1.4571) Pipe size and flow ranges In-Line Sensor from 1 NL/min up to 600 Nm³/h Insertion Sensor from 65 mm up to 500 mm pipe size from 1 Nm³/h up to Nm³/h Up- and Downstream area Min. 10 x D and 5 x D, optional with the flow conditioner only 3 x D and 2 x D (D = pipe diameter) Table of In-Line Sensor: Model Pipe size diameter Flow body Process Standard flow range No. DN (inch) Inside di Length L Thread (M) (optional 2 times higher) E-2 DN 15 (1/2 ) 15,8 mm 178 mm 1/2" NPT 0-20 Nm³/h (0,35 Nm³/min.) E-3 DN 20 (3/4") 20,9 mm 178 mm 3/4" NPT Nm³/h (1,65 Nm³/min.) E-4 DN 25 (1") 26,6 mm 300 mm R 1" Nm³/h (2,5 Nm³/min.) E-5 DN 32 ( 1 1/4") 35,1 mm 254 mm 1 1/4" NPT Nm³/h (4,15 Nm³/min.) E-6 DN 40 (1 1/2") 40,9 mm 381 mm 1 1/2" NPT Nm³/h (5,85 Nm³/min.) E-7 DN 50 (2") 52,5 mm 750 mm R 2" Nm³/h (10 Nm³/min.) Fig. 1) of the front page shows a VARIOMASS ECO Insertion Sensor with L=300 mm and Option BVR ½

3 DIMENSIONS Insertion Sensor: d = 1/2" L = 300 (12 ) or 400 mm (16 ) Fig. 2): Insertion Sensor with Standard Swagelok fitting ½ and optional distance holder ring In-Line Sensor: FLOW L di Fig. 3): In-Line Sensor 2 with optional LCD Display within the sensor enclosure lid

4 Optional parts Fig. 4a): In-Line Sensor a) with b) without flow conditioner Fig. 5) BVR ½ -D with pressure transmitter Fig 6): Option ball valve retractor assembly BVR ½ Fig 7): Option LCD display flow conditioner for In-Line Sensor for use with short up- and downstream area distance holder ring for Insertion Sensor to fix the insertion depth VARIOMASS ECO enclosure with LCD Display (for actual and total flow reading) BVR ½ ball valve retractor assembly in stainless steel for Insertion Sensor allows to install or retract the Sensor probe under pipe pressure pipe size 65 mm to 500 mm Software: WIN-ECO for parameter settings or reading values software WINVAR with the RS 485 output allows to monitor up to 32 unit via PC BVR ½ -D ball valve retractor assembly in stainless steel for Insertion Sensor with pressure transmitter (0-10 bar) allows to install or retract the Sensor probe under pipe pressure pipe size 65 mm to 500 mm and gives you a 4-20 ma output of actual line pressure

5 SOFTWARE All VARIOMASS ECO units can be used with the Software WIN-ECO and a PC to adjust and readout all settings. The following data s can be read: total air consumption since installation, 2 separate totalizer consumption reset able, date and time, flow range and unit, pipe inside diameter, analog output, maximum flow values, calibration date of the Sensor and so on. The optional RS232 port in combination with the software WIN-ECO can be used as an Online monitoring of the flow values over the time on the PC. These data can be save on the PC and the software WIN-ECO will make a graphic over the time for maximum one day. All graphics can be print out or zoom in or out. WIN-ECO Online graphic: WIN-ECO day graphic: The new WIN-ECO software used the communication via USB output or optional via Bluetooth signal. You can use this software for Online monitoring or setup the unit via a PC with Bluetooth output. On request we can setup the VARIOMASS ECO board with an M-BUS output board for actual and total flow value (the serial number is the M-BUS ID number) or with an optional PROFIBUS DP output. For applications when supplying the power supply of 24 VDC from a SPS and use the ECO 4-20mA output on the same potential we recommend to use the optional galvanic isolation of the input board. If you need to record the line pressure we can supply the ball valve retractable assembly BVR ½ -D with a small pressure transmitter which gives you a 4-20 ma signal for the line pressure of example 0 to 10 bar. This pressure transmitter needs an external 24 VDC power supply.

6 MODEL NUMBER E - - S - - output signal: 00 = Analog Output (Standard) I = Pulse output V = Serial port output RS 232 K = Relay output (2 pcs.) B = Bus RS 485 output + Software WINVAR process connection of the sensor: 0 = bored through fitting 1/2" thread (Standard) NPT-M thread for the In-Line sensor K = ball valve retractor assembly (not for In-Line) F = DIN flanges in 316 SS for In-Line sensor Z = special sensor material: S = all in stainless steel (Standard) pipe size / probe length L 0 = DN 65 up to DN 300 / L = 300 mm (12") or DN 65 up to DN 100 with balve valve option 1 = DN 125 up to DN 500 / L = 400 mm or DN 125 bis DN 300 with ball valve option 2 = In-Line Sensor 1/2" (DN 12) 3 = In-Line Sensor 3/4" (DN 20) 4 = In-Line Sensor 1" (DN 25) 5 = In-Line Sensor 1 1/4" (DN 32) 6 = In-Line Sensor 1 1/2" (DN 40) 7 = In-Line Sensor 2" (DN 50) Z = special Option (please indicate): Software WIN-ECO (Disc plus USB cable plus manual) optional with Bluetooth communication Flow conditioner for In-Line Sensors from pipe size ¾ up to 2 Distance holder ring for Insertion Sensor E C O e n g 2 x 16 sign LCD display within the sensor enclosure lid galvanic Isolation of the input board M-BUS output or Profibus DP output moduls within the sensor electronic board Dielen GmbH PO Box 1127 D Straelen Germany Tel Fax info@dielen-gmbh.de