Burkert 8711 MFC CO2. 0.25 SLPM, Flange Mount, 24 VDC 4-20mA, Cal Due 7/18/20,

Description

This is a
Burkert 8711 MFC CO2. 0.25 SLPM, Flange Mount, 24 VDC 4-20mA, Cal Due 7/18/20,
What you will get:
Burkert 8711 MFC CO2. 0.25 SLPM, Flange Mount, 24 VDC 4-20mA, Cal Due 7/18/20,
This is my item 8727.  These were removed from a bio-reactor system and these were mounted to a manifold.  So the input and outputs are on the bottom.  I will shoot more pictures of the bottom of these units later.
More Information:
The mass flow controller (MFC) Type 8711 is suited for regulating the mass flow of gases over a big flow range. The thermal MEMS sensor is located directly in the gas stream and therefore reaches very fast response times. A direct-acting proportional valve from Bürkert guarantees a high sensitivity. The integrated PI controller ensures outstanding control characteristics of the MFC. Type 8711 can optionally be calibrated for two different gases; the user can switch between these two gases. As electrical interfaces both, analog standard signals and fieldbuses are available. The mass flow controller type 8711 fits for various applications, like e.g. burner controls, heat treatment, material coatings, bio reactors, fuel cell technology or test benches.
Technical Data
Nominal flow range1) (Qnominal): 10 mlN/min2) to 80 l N/min (N2), see table on p. 2
Turn-down ratio 1:50, higher turn-down ratio on request
Operating gas Neutral, non-contaminated gases, on request
Calibration gas Operating gas or air with conversion factor
Max. operating pressure (Inlet pressure) 10 bar (145 psi) depending on the orifice of the valve
Gas temperature -10…+70 °C (-10…+60 °C with oxygen)
Ambient temperature -10…+50 °C
Accuracy ±0.8% o.R. ±0.3% F.S. (after 1 min. warm up time)
Repeatability ±0.1% F.S.
Settling time (t95%) <300 ms
Materials
Body Aluminium or stainless steel
Housing PC (Polycarbonate) or metal
Seals   FKM, EPDM
Port connection NPT ¼, G ¼, screw-in fitting or
flange
, others on request
Regulating unit (Proportional Valve) Normally closed
Valve orifice  0.05…4.0 mm
k VS value 0.00006…0.32 m3/h
Electr. connection Plug D-Sub 15 pin
Additionally with fieldbus:  with PROFIBUS-DP: Socket M12 5 pin with CANopen: Socket M12 5 pin
Power supply 24 V DC
Voltage tolerance ±10%
Residual ripple <2%
Power consumption Max. 3.5…14 W (depending on proportional valve used)
Input signal 0…5 V, 0…10 V, 0…20 mA or 4…20 mA
Input impedance
>20 kΩ (voltage),
<300 Ω (current)
Output signal 0…5 V, 0…10 V, 0…20 mA or 4…20 mA
Max. current (voltage) 10 mA
Max. load (current)  600 Ω
Digital communication RS232, Modbus RTU (via RS adapter)
via adapter possible: RS485, RS422 or USB
(see accessories table on p. 3)
Fieldbus option PROFIBUS-DP, CANopen
Protection class IP40
Dimensions [mm] see drawings 5-7
Total weight ca. 500 g (aluminium body)
Installation horizontal or vertical
Light emitting diodes (default functions, other functions programmable)
Indication for power, Limit (with analog signals) / Communication (with fieldbus) and error
Binary inputs Two
1. Start Autotune
2. not assigned
Binary output (default functions, other functions programmable)
A relay output for: 1. Limit (setpoint not reached) Max. Load: 25 V, 1 A, 25 VA 1)
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