MV-191-He Mass flow meter
Mass Flow Meter for gases with integrated display
- Direct thermal mass flow measurement
- High accuracy
- Actual calibrated on Helium He
- Bright, graphical OLED display
- Digital or analog output; alarm and counter functions
Multi gases
Pre-installed ranges
| Ranges | Flow range (relative Air) |
|---|---|
| Range 1 | 20 mln/min .. 200 mln/min (sccm) |
| Range 2 | 20 mln/min .. 100 mln/min (sccm) |
| Range 3 | 20 mln/min .. 50 mln/min (sccm) |
Pre-installed gas
| Gas | min. range .. max. range |
|---|---|
| He Helium | 20 .. 200 mln/min (sccm) |
Features of MV-191-He Mass flow meter
- Clear indication in:
- actual flow rate (bar graph and value)
- desired flow units
- type of gas
- totalised flow - Bright, wide-angle OLED display
- Free of parallax error
- Virtually independent of temperature and
pressure variations - Low pressure drop
- Wide flow ranges
- Fast response
- High accuracy
- Electronic output:
- Analog (0 .. 5 Vdc)
- RS-232 interface (with FLOWBUS)
- Modbus-RTU/ASCII interface - Configurable password protection
- Alarm and counter functions
- Relays
- Digitally calibrated
- Free software tools
Scope of delivery
- MASS-VIEW flow meter
- packing box
- 9.17.054 Short form manual
- (optional) fittings
- (optional) power supply
- (optional) Battery Pack
Please note:
Our mass flow meters are sold without fittings and without power supply, please use the 'Accessories' tab to order additional accessories. For your convenience, we also have our flow ranges in other flow units.
Technical specifications
Measurement / control system
Flow range
20 mln/min .. 200 mln/min (sccm)
Mass flow units ln/min and SLM refer to normal operating conditions, i.e. 0°C (32°F) and 1013 mbar (14.7 psi)
Mass flow units ln/min and SLM refer to normal operating conditions, i.e. 0°C (32°F) and 1013 mbar (14.7 psi)
Accuracy
± 2% RD for flow > 50% of max. capacity
± (1% RD + 0.5% FS) on lower flows
Technical specifications are based on Air at maximum FS
± (1% RD + 0.5% FS) on lower flows
Technical specifications are based on Air at maximum FS
Repeatability
< 0.2% FS typical
Operating pressure
0 .. 10 bar(g) / 0 .. 150 psi(g)
Pressure coefficient
0.2% / bar typical at Air
Standard calibration gas
Helium He
Rangeability
up to 1:10
Response time (sensor)
(t63%) 2 seconds
Operating temperature
0 .. 50°C (32 .. 122°F)
Temperature coefficient
Zero: <0.1%FS/°C, Span: <0.2%RD/°C
Leak integrity, outboard
< 1 x 10-9 mbar l/s He
Attitude sensitivity
< 0.1% FS
Mechanical parts
Material (wetted parts)
Meter: aluminium, Viton® (FPM)
Test pressure
21 bar (a) / 300 psi (a)
Process connections
G 1/4" BSPP female
(compression fittings optional)
(compression fittings optional)
Seals
Viton®, PTFE
Weight
0.7
kg
Ingress protection
IP-40
Electrical properties
Power supply
+15 … 24 Vdc (+/- 10%)
Max. power consumption
approx. 135 mA
Analog output
0 .. 5 Vdc
EMC
EU declaration
Digital Communication
RS232 / RS485 (Modbus-RTU/ASCII)
Min. And max. Relay contacts
switching current 0.5 A,
24 Vdc one side grounded (0 Vdc power)
24 Vdc one side grounded (0 Vdc power)
Electrical connection
8-pin RJ-45 modular jack
Product details
Downloads
Brochure & Certificate
Dimensional drawing
Stepfile
Applications
The fields of application for MASS-VIEW® mass flow meters are diverse:
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Frequently Asked Questions
- Accuracy & Repeatability Flow meters
- Menu options on display
- How to connect MASS-VIEW® using RS-232 to a computer?
- How to connect several MASS-VIEWs (5, 6, 7) to a RS-485 bus system?
- What is the sensor principle of MASS-VIEW?
- From which measurement value does the counter start to count?
- Which maximum capacity does a MASS-VIEW® flow meter have?
- What is the amplitude of the square wave pulse output?
- What is the pressure drop over the instrument?
- What is the difference between mass flow meters and volume flow meters?
More questions on our FAQ page