Reciprocating compressors are often some of the most critical systems at a production facility. Industrial facilities can expect widely varying lifecycle costs and reliability from their own installations due to many factors like adequacy of maintenance practices and operational factors. Thanks to the SINT Technology experience in turbomachinery performance evaluation and automatic fault detection the RCX-Reciprocating Compressor Analyzer is now available. RCX is actually the only portable system for reciprocating compressors analysis ATEX approved.

1. SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com
Reciprocating compressors are often some of the most critical systems at a production facility. Industrial facilities can expect
widely varying lifecycle costs and reliability from their own installations due to many factors like adequacy of maintenance
practices and operational factors. Thanks to the SINT Technology experience in turbomachinery performance evaluation and
automatic fault detection the RCX-Reciprocating Compressor Analyzer is now available. RCX is actually the only portable sy-
stem for reciprocating compressors analysis ATEX approved.
Analysis of cylinder pressure is one of the main ways of checking reciprocating compressor efficiency and of promptly detec-
ting abnormal behaviour, such as:
Multi-channel system for reciprocating compressors diagnostics in
Hazardous Area (ATEX Approved)
RCX- Reciprocating Compressor Analyzer
 Portable
 Multichannel (up to 16 chs)
 Hazardous Area approved (Ex nA e i IIC T3)
 Stand-alone recording
 Wireless connection to PC
 On-machine collecting data
 User friendly Software
 Ex ia sensors
 Up to 12 Dynamic pressure probes
 IEPE Accelerometers
 Velocimeters
 Tacho probe (i.e. optical, magnetic and inductive probe)
The RCX System
Due to the use of NI cRIO product it was possibile to design the RCX system to be used both as a stand alone recording sy-
stem or a user driven system. In both cases a graphical user interface provides an intuitive and software driven configuration
of the system itself.
 faulty valve behaviour
 suction and discharge pressure pulsations
 excessive valve pressure loss
 leaking packing and piston rings
 gas backflow to the suction and discharge valves

2. SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com
System features
Smart setup
 Dedicated user interface
 Sensors database manager
 Multi-measurement sets managment
 Automatic dead center detection
Recorded data
 Cylinder pressure (indicated cycle)
 Suction and discharge pressure
 High Freqeuncy Vibration
 Rod-drop and run-out
RCX- Reciprocating Compressor Analyzer
85-264 Vac@47-63 Hz
Ex-i sensors
No Ex-i Sensors
Zone 0
Zone 1
Zone 2
Wireless access
point
Powersupplies
(to 24Vdc and to 12 Vdc)
RS232 from
datalogger
DataAcquisition
system
Ex-i sensors
TB
Safety
barriers
Real time analysis
 Angle, stroke and volume domain visualization for
cylinder pressure
 Time and frequency domain visualization for vibra-
tion and pressure
 Valve cover temperature collection
 Valve cover vibration analysis
 Performance paramaters calculation
 Overlay of theoretical cycle
Data post-processing
 Playback mode of recorded signals
 Re-editable setup and data update
 Multi domain visualization (angle, stroke, volume time, frequency)
 Performance paramaters calculation (compression ratio, theoretical and measured volume efficiency, cleareance, ca-
pacty, etc.).
 Data export
Real Time diagnostic performance
 Cylinder and Piping Pulsations
 Mechanical Looseness
 Leaking Valves and Rings
 Excessive Valve Losses and Deficiencies
 Passage Flow Restrictions
 Defective Unloaders
 Clearance Discrepancies
 Horsepower and Capacity Variances

3. SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com
RCX- Reciprocating Compressor Analyzer
Technical specifications
Acquisition modules
Channels 1-12
Input range ±10 V
Resolution 24-Bit
Sample rate 50 kS/s/ch
Filters antialias filter
Channels 13-16
Input range ±10 V
Resolution 16-Bit
Sample rate 500 kS/s/ch
Note: the bandwidth of the channel is limited by the corresponding safety barrier, if present
WLAN Interface
Standards IEEE 802.11a/b/g/h for Wireless LAN
Operating Channels
(central frequency)
2.412 to 2.472 GHz (13 channels) - 5.18 to 5.24 GHz (4 channels)
Physical Characteristics
Housing glass-fiber reinforced duroplastic polyester, with hinged door
Ingress protection IP66 to EN60529
Weight 13 kg
Dimensions 405 x 305 x 202 mm (excluding the glands)
Power Requirements
Input Voltage 110-230 Vac @ 47-63 Hz
Power Consumption 120 W
Approvals
ATEX (Ex nA e i IIC T3)