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Model EX640B71D Loop Powered, Current Output, Industrial Vibration Sensor Installation and Operating Manual For assistance with the operation of this product, contact PCB Piezotronics, Inc. Toll-free: 800-959-4464 24-hour SensorLine: 716-684-0001 Fax: 716-684-3823 E-mail: imi@pcb.com Web: www.imi-sensors.com...
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Service, Repair, and Return Policies and Instructions The information contained in this document supersedes all similar information that may be found elsewhere in this manual. also good practice to recalibrate after Service – Due to the sophisticated exposure to any severe temperature nature of the sensors and associated extreme, shock,...
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list(s) accompanying the shipment. A complete list of distributors and offices detailed account of the nature of the found www.pcb.com. problem(s) being experienced with the Customers within the United States may equipment should also be included contact their local sales representative inside the package(s) containing any factory customer...
Table of Contents Introduction ........................Page 3 General Features Dimension Drawing ......................Page 4 Operation and Wiring ...................... Page 5 Standard Wiring Taking Measurements RV Option TO Option EP Option ESD Sensitivity ....................... Page 10 Warranty/Servicing Warranty, Service & Return Procedure ................Page 11 Customer Service ......................
Introduction The Model 640/641/645/646 B7 Series Industrial 4-20mA Sensors combine the capabilities of a piezoelectric vibration sensor and a 4-20mA vibration transmitter. The sensor outputs a 4-20mA signal that is proportional to the overall velocity or acceleration of the machinery. Ideal for monitoring the vibration of process equipment such as fans, motors and pumps, the output of the sensor is used for process control or predictive maintenance.
Operation and Wiring Standard Wiring The Model 640/641/645/646 B7 Series uses plug-in type screw terminal connectors for all input and output connections and operate from a standard 2-wire, 4-20mA loop. Attach the positive (+) input from the power supply to Pin 2 and the negative (-) input from the power supply to Pin 3. Figure 1 –...
- Resistor value must be less than: (Vsupply – 12) x 50. Taking Measurements When measuring the current output from the unit, use the following formula to calculate the vibration level: Vibration Output = (Measured Output – 4mA) x (Full Scale Vibration Output /16mA) Measured mA 640BX0 640BX1...
RV Option The RV (raw vibration) option includes a 100mV/g ±20% additional output. The accelerometer frequency range is 1 Hz-1 kHz, maximum amplitude of 15 g-pk. Data collectors or analyzers can use this vibration signal for further analysis. Figure 3 – RV wiring Note: -The Acceleration Signal Negative has to be isolated from any grounding.
TO Option The TO (Temperature Output) option includes an additional independent 4-20mA output for temperature measurement. The temperature range is from -40°C to 125°C with an overall accuracy of ±5%FSO. The imbedded temperature sensor monitors the environment internal to the sensor housing and is situated at approximately mid level.
EP Option The EP option includes an Explosion Proof capped elbow for applications in rigid or IMC conduit systems where space is limited and access is needed for pulling conductors or maintenance. Standard conduit hub size is 1”NPT. CAPPED ELBOW 3.850 5.777 3.990...
Warning 1 – ESD sensitivity The power supply/signal conditioner should not be opened by anyone other than qualified service personnel. This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid injury. Warning 2 –...
Service Because of the sophisticated nature of IMI instrumentation, field repair is typically NOT recommended and may void any warranty. If factory service is required, return the instrumentation according to the “Return Procedure” stated below. A repair and/or replacement quotation will be provided prior to servicing at no charge. Before returning the unit, please consult a factory IMI applications engineer concerning the situation as certain problems can often be corrected with simple on-site procedures.
IMI, a division of PCB Piezotronics, guarantees Total Customer Satisfaction. If, at any time, for any reason, you are not completely satisfied with any IMI product, IMI will repair, replace, or exchange it at no charge. You may also choose to have your purchase price refunded.
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Model Number Revision: NR LOOP POWERED, CURRENT OUTPUT, INDUSTRIAL VIBRATION SENSOR EX640B71D ECN #: 42927 Performance ENGLISH OPTIONAL VERSIONS Measurement Range 0.0 to 1 in/sec pk 0.0 to 25.4 mm/s pk Optional versions have identical specifications and accessories as listed for the standard model...