Technical specifications
Measurement / control system |
Flow range
(intermediate ranges available) |
min. 0,1…5 g/h
max. 4…200 g/h |
Mass flow accuracy |
±0,2% of rate |
Turndown |
≥ 1:50 |
Repeatability |
±0,05% of rate ± ½(ZS* x 100/flow)% based on digital output |
Zero Stability (ZS)* |
< ±0,1 g/h |
Settling time (<2% of setpoint) |
1 sec. (typical) |
Max. Kv-value |
3,4 x 10-4 |
Max. fluid viscosity |
0.1 Pa*s |
Operating temperature |
0…70°C;
for ATEX Cat.3, Zone 2 max. 50°C |
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 |
Housing |
stainless steel 430F |
Sensor |
single tube, DN 1.3 |
Pressure rating |
100 bar abs |
Process connections (welded) |
compression type or face seal couplings |
Purge connection |
1/8” OD compression type or 1/8" VCR |
Seals |
metal |
Valve seat |
Kalrez®-6375, other on request |
Weight |
1,5 kg |
Ingress protection (housing) |
IP65 (weatherproof) |
Electrical properties |
Power supply |
+15…24 Vdc +/- 10%
Max. ripple recommended: 50 mV tt |
Max. power consumption |
max. 7 W |
Analog output |
0...5 (10) Vdc, min. load impedance > 2 kΩ;
0 (4)...20 mA (sourcing), max. load impedance < 375 Ω |
Analog setpoint |
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 |
Analog/RS232 |
8-pin DIN (male); |
PROFIBUS DP |
bus: 5-pin M12 (female);
power: 8-pin DIN (male); |
Devicenet™/FLOW-BUS/Modbus |
5-pin M12 (male); |
* 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.