The VARIOMASS LC 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 from 2.5” (65 mm) up 20” (500 mm) as an Insertion meter. Compare to the VARIOMASS ECO flowmeter we do not have that high accuracy so this will reduce the system price to a low budget unit. The microprocessor controlled electronic is within the sensor head enclosure and has a 24 VDC power supply, an analog and pulse output. The optional software WIN-LC and the USB port with a connection to a PC allows the user to readout and change all preset values or he can use the PC as a data logger for the flow values data’s vs. time. All units have a LCD display with 2 x 16 sign 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 pulse output (example 1 m³/puls) gives you the total flow value for example to an external pulse counter. All electrical connections are made by a round 8-Pin female metal connector with protection class IP 65 (NEMA 4).
STANDARD AND OPTIONAL PARTS
Fig.1): In-Line Sensor with and Fig.2) without flow conditioner Fig.3) BVR ½“-D with pressure transmitter Fig.4): Option ball valve retractor assembly BVR ½“ Fig 5): LCD Display with backlight (Standard) * 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 *BVR ½“ ball valve retractor assembly in stainless steel for Insertion Sensor allows to install or retract the Sensor probe under pipe pressure up to 12 bar g *Software: WIN-LC for parameter settings or reading values with USB port (Option V) *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 (max. 12 bar g) and gives you a 4-20 mA output of actual line pressure *8-PIN male counter connection with protection class IP 65 (NEMA 4) without or with interconnecting cable in length of 2, 5, 10, 20 or xx meter (xx = 21 up to 99 Meter – please indicate)
ECHNICAL DATA
Power supply 24 V (+/- 20%) DC max. 8 Watt Ambient temperature: -10°C up to + 60°C Protection class: IP 65 (NEMA 4) aluminum enclosure with male connector Output signal: 0/4 - 20 mA linear acc. to flow range & pulse output 1m³/pulse Flow unit: Nm³/h, Nm³/min., Nl/min. or SCFM Normal / Standard conditions(N): Acc. to ISO 1217 with 20°C (68°F) & 1 bar abs. (14.5 PSI) (optional other standard conditions possible – please indicate) Media: air at 4 to 12 bar g (Optional other pressure range or gases) Media temperature range: 20°C (+/- 20°C) (Optional up to 200°C) Max. working pressure: 16 bar g. / 230 PSI (Optional 40 bar g. / 580 PSI) Process connection: R ½" male thread for Insertion sensor and NPT ½“ up to R 2“ male thread for In-Line sensor Accuracy: +/- 2% of reading +/- 1% of FS (Full Scale) Turn down ratio: 10:1 up to 100:1 Repeatability: +/- 0.5% of reading Wetted parts: Stainless steel (316 SS) Pipe size and flow ranges according to normal conditions (N) of 20°C, 1 bar abs. & 0% r. humidity In-Line sensor from 1 NL/min (SLPM) up to 600 Nm³/h (SCMH) and Insertion meter from 65 mm up to 500 mm pipe with 1 Nm³/h up to 100.000 Nm³/h with high flow option Up- and Downstream area: min. 10 x D and 5 x D, with conditioner 3 x D and 2 x D
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