mini CORI-FLOW Ex d XM14

Ex-Proof Coriolis Mass Flow Meter/Controller for low flow rates

  • High accuracy, excellent repeatability
  • Fast response
  • Independent of fluid properties
  • Additional density and temperature output
  • IECEx and ATEX Zone 1 approved
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mini CORI-FLOW Ex dXM14

Ex-proof Coriolis Mass Flow Meters/Controllers for low flow rates

mini CORI-FLOW Ex d Mass Flow Meters are precise and compact instruments for low flow rates, based on the Coriolis measuring principle, built in an explosion proof housing for use in IECEx and ATEX Zone 1 hazardous areas, ATEX approval II 2 G Ex d e IIB T6 Gb. Bronkhorst® model XM14 Mass Flow Meter (MFM) is suited for highly accurate measurement of gas or liquid flow ranges between 0,03…1 kg/h and 0,3…30 kg/h (which corresponds with 0,4…13,3 ln/min up to 4…400 ln/min when used on nitrogen) at operating pressures up to 107 bar (a).

The instrument contains a microprocessor based pc-board with signal and fieldbus conversion and a PID controller for optional mass flow control by means of a separately mounted control valve or pump.

Technical specifications

Measurement / control system
Flow range
(intermediate ranges available)
min. 0,03…1 kg/h
max. 0,3…30 kg/h
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/actual flow)%
Zero Stability (ZS)* < ±6 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
Temperature effect** on zero: < 0,5 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 1.3
Pressure rating 107 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, 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.

For dimensional drawings and hook-up diagrams please visit the product page on our website


mini CORI-FLOW Ex d brochure

Manual (incl. dimensions)
mini CORI-FLOW Ex d - Manual

IECEx: IECEx DEK 12.0040
JPEx: DEK 19.0041

Bronkhorst High-Tech B.V.

Nijverheidsstraat 1A
NL-7261 AK Ruurlo (NL)
Tel. +31 573 45 88 00
[email protected]

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