Vibration Monitoring for the Paper Industry

Download the printer-friendly Vibration Monitoring for the Paper Industry Application Note

Predictive maintenance is essential to the paper and pulp manufacturing process to ensure product efficacy, operational uptime, and prevent catastrophic failure. Due to the intense heat and caustic processes involved in paper manufacturing, machine fires are a common occurrence in the absence of predictive maintenance.

Condition monitoring programs can be used to monitor the vibration of the bearings throughout the plant and improve the reliability of the overall process.

Commonly Monitored Machines within a paper mill include:

▶ Calendars
▶ Chippers
▶ Dryers
▶ Drying Cylinders
▶ Fans
▶ Gearboxes
▶ Motors
▶ Compressors
▶ Paper Machine Rolls
▶ Couch Rolls
▶ Pumps
▶ Winders

Common faults like misguided felts, breaks, and fires can be caused by defects in rolling element bearings resulting from:

▶ Improper Lubrication
▶ Misalignment
▶ Uneven Wear
▶ Overloading

Due to the often hot, wet, and chemically challenging environment present in paper and pulp processing, CTC recommends the permanent mounting of vibration sensors to the machine. CTC offers a variety of robust and reliable hardware tailored to meet the needs and environments of each industrial process within the paper industry.

FORMING / PRESSING AND CALENDAR SECTIONS

Recommended Products

Standard Accelerometer Offerings for environments up to 250 °F (121 °C):

AC102 and AC104 Multipurpose Accelerometers, 2 Pin Connector, 100 mV/g, ±10%, ±80 g, Dynamic Range

AC292 and AC294 Premium Compact Accelerometers, 2 Pin Connector, 100 mV/g, ±5%, ±80 g, Dynamic Range

UEB332 and UEA332 Dynamic Vibration IEPE Ultrasound Sensor, 1/4-28 Mounting, 2 Pin Mini-MIL Connector, 100 mV/g, ±10%, ±80 g, Dynamic Range

TREA330 Miniature Industrial Triaxial Accelerometer, 4 Pin Mini-MIL Connector, 100 mV/g, ±5%, ±80 g, Dynamic Range

500 mV/g Accelerometer Offerings for slow, low-frequency applications:

AC133 and AC134 Low-Frequency Accelerometers, 2 Pin Connector, 500 mV/g, ±10%


TXFA333 Low Frequency, Triaxial Accelerometer, Side Exit, 4 Pin Mini-MIL Connector, 500 mV/g, ±5%

 

CTC’s Dual Output Sensors are also very popular choices for paper mill predictive maintenance programs. Dual Output Sensors allow the user to measure both temperature and vibration in one sensor.

Dual Output Vibration and Temperature Offerings:

TA200 Series Dual Output Sensors, Temperature and Acceleration - Options:
25 mV/g and 10 mV/°C
100 mV/g and 10 mV/°C
500 mC/g and 10 mV/°C


TR100 Series RTD Sensors, Temperature and Acceleration - Options:
100 mV/g and 10 mV/°C
500 mV/g and 10 mV/°C

VT200 Series Dual Output Piezo Velocity Sensors, Velocity and Temperature - Options:
100 mV/in/sec and 10 mV/°C

 

CTC’s Nylon Connectors are the ideal choice for use with multi-purpose accelerometers and Dual Output Sensors in paper processing. Our nylon connectors have strong chemical resistance to caustic environments to protect the efficacy of your data. For high moisture concerns, select V Series Viton™ Seal-Tight Boots for an IP69-rated seal:

A2A and A3A Nylon Molded Connectors, 250 °F (121 °C)

B2N and B3N Seal-Tight Silicone Boot Connectors with Nylon Inserts, 250 °F (121 °C)

V2N and V3N Seal-Tight Viton™ Boot Connectors, with Nylon Inserts, 250 °F (121 °C)

J4N Nylon-Molded Connector for 4-Pin Triaxial Accelerometers, 250 °F (121 °C) 

 

 

CTC recommends FEP Jacketed Cabling for the chemical concerns present in paper processing:

CB111 Twisted, Shielded Pair Cable for Single-Axis Sensors, 392 °F (200 °C) 

CB112 3-Conductor, Shielded Cable for Dual Output Sensors, 392 °F (200 °C) 

CB119 4-Conductor, Shielded Cable for Triaxial Sensors, 392 °F (200 °C) 

DRYER SECTION AND HIGH-TEMPERATURE APPLICATIONS

Recommended Products

For high-temperature environments, CTC offers a variety of IEPE Sensors with high-temperature resistance up to 325 °F (162 °C):

AC207 and AC208 High Temperature, IEPE Accelerometers, 2-Pin Connector, 100 mV/g, ±10%

TXEA331-HT High Temperature, Triaxial Accelerometer, Side Exit 4-Pin Connector, 100 mV/g, ±5%

Pair CTC’s high-temperature resistance sensors with our high-temperature resistance connectors. CTC offers a variety of PPS Connectors rated for temperatures up to 325 °F (162 °C). CTC’s V2R (for single-axis sensors) and JV4R (for triaxial sensors) are Viton® Seal-Tight Boot Connectors with PPS Inserts. These connectors are great in caustic environments and have an IP69-rated seal to protect against hot and wet environments:

A2R 2-Socket, MIL-Style, PPS-Molded Connector, 392 °F (200 °C)

A2S 2-Socket, MIL-Style, PPS Molded Connector and Locking Ring, 392 °F (200 °C)

V2R 2-Socket, MIL-Style, Seal-Tight Viton™ Boot with PPS Insert, for Single-Axis Sensors, 350 °F (177 °C)

JV4R 4-Socket, Mini-MIL, Seal-Tight Viton™ Boot Connector with PPS Insert, for Triaxial Accelerometers, 350 °F (177 °C)

 

When permanently mounting sensors, it is important to run cables back to a safe data collection point to limit analyst exposure to the high temperatures found in the dryer section. CTC Junction Boxes provide a common cable termination point for bringing compatible cables for sensors back to one location for routine data collection with portable data collectors.

CTC offers a wide variety of Junction Boxes ranging from 1 channel up to 48 channels. Multiple channel count configurations mean that you only pay for the number of channels that you require. Due to moisture ingress concerns in paper processing, CTC recommends only selecting enclosures with latching doors for a NEMA 4X (equivalent to IP66) rating.