Flow measurement for compressed air and gases

Each factory needs compressed air, however, often it is not realized that compressed air is one of the most expensive types of energy. Therefore, the intelligent use of flow measurement DS 400, holds an enormous potential for saving energy. In most cases the user mainly concentrates on the production, i. e. on the compressors. In order to save energy very often new compressors, control systems or heat recovery systems are installed.

Flow measurement DS 400 consisting of:

Flow sensor VA 500:

• Easy installation and removal under pressure via 1/2″ ball valve
• Several gas types – freely adjustable at DS 400
• Usable from 1/2″ to 12″ DN 300
• Diameter freely adjustable at DS 400
• Output for 4…20 mA for m³/h
• Pulse output for m³ (total flow)

Chart recorder DS 400:

• 3.5″ graphic display with touch screen – shows the progression of the measured values in graphic form
• 2 sensor inputs for flow sensors/ dew point sensors
• USB interface for reading out the data logger via USB stick
• 2 additional sensor inputs for pressure sensors, current meters and so on
• Option: Data logger for 100 million measured values (2 GB SD card)
• Option: Ethernet and RS 485 interface (Modbus protocol)
• Option: Webserver
• Option: CS Soft Basic – comfortable evaluation of the measured data

 

VA500
Parameters:	m3/h, I/min (1000 mbar, 20° c) in case of compressed air resp. Nm3/h, NI/min (1013 mbar, 0°C) in case of gases
Units adjustable via keys at display:	m3/h, m3/min, I/min, I/s, ft/min, cfm, m/s, kg/h, kg/min
Adjustable via keypad:	Diameter for volume flow calculation, counter resettable
Meas. principle:	Calorimetric measurement
Sensor:	Thermal mass flow sensor
Meas. medium:	Air, gases
Gas types adjustable via external device DS 400, DS 500, PI5OO	Air, nitrogen, argon, nitrous oxide, CO2, oxygen
Accuracy: (m.v.: of meas. value) (f.s.: of full scale)	± 1.5 % of m.v. ± 0.3 % of f.s. on request ± 1.0 % of m.v. ± 0.3 % of f.s.
Operating temp.:	-30 … 110 °C probe tube -30 … 80 ° C housing
Operating pressure:	up to 50 bar
Digital output:	RS 458 interface, Modbus RTU, M-Bus (optionally)
Analogue output:	4 … 20 mA for m3/h resp.I/min; on request: scaling for cfm,m3/min, I/min, I/s, ft/min, m/s
Pulse output:	1 pulse per m3 resp. per liter galvanically separated
Power supply:	18. ..3 6 voe, 5 w
Burden:	< 500 Ω
Housing:	polycarbonate
Probe tube:	stainless steel, 1.4301 mounting length 220 mm, Ø10 mm
Mounting thread:	G 1/2″
DS400
Dimensions:	118x 115 x98mm IP 54 (wall housing) 92 x 92 x 75 mm (panel mounting)
Inputs:	2 digital inputs for VA 500/520
Interface:	USB
Power supply:	100 … 240 VAC, 50-60 Hz
Accuracy:	please see VA 500
Alarm outputs:	2 relays, (pot.-free)
Options:
Data logger:	100 million measuring values start/stop time, measuring rate freely adjustable
2 additional sensor inputs:	for connection of pressure sensors, temperature sensors, clamp-on ammeters, third-party sensors with 4 … 20mA 0 to 10 V, Pt 100, Pt 1000