Description
MKS 1179B Mass-Flo 1000 sccm ar Argon Gas Viton Mass Flow Controller
Part 1179BX13CR14VSPC1
From the manufacturer:
The digital mass flow controllers of the 1179B series accurately measure and control the mass flow rate of gases. The type 179B of this series is a mass flow meter for mass flow measurement only and is completely metal sealed.
Based upon an patented* MKS measurement technique, these instruments use a laminar flow device whose precise indication of mass flow is achieved through the use of a laminar bypass element in parallel with a sensor tube. The 1179 digital controllers use a PID algorithm which compares the flow signal with an external setpoint command, thus creating a control signal which is applied to a solenoid driven control valve to set the desired flow rate. The controllers also feature in the analog mode the ability to accept TTL level commands to remotely open and close the control valve. The control valve is located at the outlet of the meter section, also inside the metal instrument housing. The metal cover plus the RF bypass capacitors virtually eliminate RFI and EMI interference.
The flow signal as derived from the sensor and also an analog setpoint signal are digitalized. Therefore linearization, flow control and handling of all other signals and commands is operated by the microcomputer, in both digital and analog versions of the B series. This provides best accuracy and optimizes the controller's response and stability.
Condition: Used
This item has been inspected and appears to be in good condition. It was pulled from a working environment where it was in use and functional.