Siemens 7KQ3101 MicroSAM Process Gas Chromatograph Unit

Module Feature

7KQ3101 is Siemens MicroSAM miniature process gas chromatograph adopting MEMS micro‑chip chromatographic technology. Built‑in valveless live injection, micro‑fabricated capillary separation column and high‑sensitivity detector. It is housed in Ex‑d flame‑proof enclosure, suitable for Zone 1 / Div 1 hazardous‑area installation. Can be mounted directly close to sampling point, shortens sample transport pipeline, reduces sample lag time. It performs continuous multi‑component gas analysis, widely applied for natural‑gas processing, petrochemical reactors and pipeline gas monitoring. This unit is legacy equipment, mostly supplied as used / refurbished spare instrumentkassystem.....

Working principle

Sample gas enters analyzer, micro‑chip valveless injection system injects fixed‑volume sample into capillary column. Each gas component obtains different migration velocity inside separation column to achieve component separation. Detector converts component concentration into electrical signal; internal CPU performs chromatogram calculation and outputs each component concentration result. Carrier‑gas (hydrogen / helium) provides driving force for component separation.

Onboard components

MEMS micro‑chip analysis module, valveless live‑injection unit, micro‑capillary separation column, high‑performance detector, electronic pressure regulating assembly, Ex‑d flame‑proof metal enclosure, gas path manifold, internal CPU & communication circuit, gas inlet / outlet manifold interface.

LED indicators

Front‑panel status LED lamps for power‑on, run, fault and alarm status; detailed chromatogram and diagnostic data read via host PC software.

Hardware self‑diagnosis

Self‑diagnosis covers carrier‑gas pressure anomaly, sample‑gas pressure deviation, detector fault, column oven temperature drift, internal communication error. Fault codes and event logs can be viewed by configuration software.

Programming software

Configuration, chromatogram viewing, calibration and fault diagnosis are completed by MicroSAM PC software; supports Modbus‑RTU, TCP/IP Ethernet communication to DCS system.

Electrical & Process Parameters

Model:7KQ3101 Brand:Siemens Device type:Miniature Process Gas Chromatograph Technology:MEMS micro‑chip chromatography Hazardous‑area rating:Ex‑d Zone 1 / Div 1 Power supply:24 VDC Carrier gas:Hydrogen / Helium Sample‑gas absolute pressure:≤1.6 bar Auxiliary‑gas absolute pressure:≤8 bar Communication:Ethernet TCP/IP, Modbus‑RTU Function:Multi‑component continuous gas‑composition analysis for petrochemical & natural‑gas sites

Mechanical & Structure

Mounting:Wall‑mount / bracket‑mount near process sampling point Protection class:Ex‑d flame‑proof enclosure Housing:Heavy‑duty cast‑metal explosion‑proof cabinet assembly

Environmental

Operating temperature:-20℃ ~ +55℃ Storage temperature:-40℃ ~ +70℃ Ambient humidity:5~95% non‑condensing Certification:ATEX / IECEx explosion‑proof compliant Status:Legacy process‑analyzer instrument, available as used / refurbished spare unit

Installation

Mount analyzer bracket close to process sampling point. Connect sample‑gas pipeline, carrier‑gas and vent pipeline strictly following pressure‑specification requirements. Connect 24 VDC power supply and communication cable. Complete chromatographic method configuration, perform calibration, then put into continuous analysis operation. Comply with hazardous‑area installation specification.

Interface

Multiple gas‑path threaded ports (sample‑in, carrier‑gas, vent), 24 VDC power terminal, RJ45 Ethernet communication port.

Diagnostic

Analysis result drift:Carrier‑gas pressure unstable or column performance degradation. Analysis peak missing:Sample‑gas supply interruption or injection unit anomaly. Hardware fault alarm:Check software diagnostic log for oven temperature, detector or gas‑path abnormal information.

Product Brief

Siemens 7KQ3101 MicroSAM MEMS miniature explosion‑proof process gas chromatograph, installed near process sampling point for fast multi‑component gas‑composition measurement in petrochemical and natural‑‑gas applications.