Technical specifications
Measurement / control system |
Mass flow accuracy |
Liquid: ±0,2% of rate;
Gas: ±0,5% of rate |
Turndown |
Meter: up to 1:100;
Controller: ≥ 1:50
|
Repeatability |
±0,05% of rate ± ½(ZS* x 100/flow)% based on digital output |
Zero Stability (ZS)* |
< ±0,02 g/h |
Response time, meter (t98%) |
≤ 200 msec |
Settling time, controller
(<2% of setpoint) |
1 sec. (typical) |
Temperature range |
Ambient temperature range: 0...55°C
Process temperature range: 0...70°C
(Other temperature ranges on request) |
Temperature effect** |
on zero: < 0,01 g/h/°C;
on span: < 0,001% Rd/°C;
self heating (at zero flow): ≤ 15°C |
Temperature accuracy |
±0,5°C |
Density accuracy |
< ±5 kg/m3 |
Mounting*** |
Any position, attitude sensitivity negligible |
Leak integrity |
Outboard < 2 x 10-9 mbar l/s He |
Warm-up time |
> 30 min. for optimum accuracy |
Mechanical parts |
Material (wetted parts) |
stainless steel 316L or comparable |
Sensor |
single tube, DN 0.25 |
Pressure rating |
138 bar abs |
Process connections (welded) |
1/8" OD compression type; other on request |
Seals |
metal |
Valve seat (controllers) |
Kalrez®-6375, other on request |
Ingress protection (housing) |
IP66 |
Electrical properties |
Power supply |
+15…24 Vdc +/- 10%
Max. ripple recommended: 50 mV tt |
Max. power consumption |
Meter: max. 3 W;
Controller: max. 7 W |
Analog output |
0...5 (10) Vdc, min. load impedance > 2 kΩ;
0 (4)...20 mA (sourcing), max. load impedance < 375 Ω;
on request: Ex i output 4...20 mA |
Analog setpoint
(for MFM + pump or control valve) |
0...5 (10) Vdc, min. load impedance > 100 kΩ;
0 (4)...20 mA (sourcing), max. load impedance ~ 250 Ω |
Digital communication |
standard: RS232;
options: PROFIBUS DP, DeviceNet™, Modbus RTU or ASCII, FLOW-BUS |
Electrical connection |
All instrument connections are wired to screw terminals |
External actuator options to be connected to the controller |
Electromagnetic control valve (Bronkhorst®) |
C2I valve with XC coil or XB coil through barrier |
Pneumatic actuated control valve (Badger Meter) |
RC200 valve with Ex d TEIP11 I/P converter |
Mass Flow Meter controlled pump |
Pump with ATEX zone 1 U/f converter |
Ex-proof specifications |
Approvals (MFM) |
ATEX: II 2 G Ex d e IIB T6 Gb
DEKRA 12ATEX0144X
IECEx: Ex d e IIB T6 Gb
IECEx DEK 12.0040 |
* Guaranteed at constant temperature and for unchanging process and environment conditions.
** Depends on flow rate, heat capacity fluid, T amb., T fluid and cooling capacity.
*** To be rigidly bolted to a stiff and heavy mass or construction for guaranteed zero stability.
External shocks or vibrations should be avoided.
Technical specifications and dimensions subject to change without notice.