Knowledge Base:  
You are here: Knowledge Base > Technical Notes

Page of 2
Tech Note 101: Wiring CMCP1100 (ICP) Accelerometers
CMCP-1100 Industrial Low Cost Accelerometers are of the “ICP” type, which are the Industry Standard. All ICP accelerometers are powered using a CCD or “Constant Current Diode” between 2 and 10 mA. Po
Tech Note 102: Powering – 24 VDC Eddy Probes
All Eddy Probes, Proximity Probes or NCPU's (Non-Contacting Pickups) System’s, Drivers or Proximitors in common use today require –24 VDC power. In transmitter based PLC and DCS monitoring systems wi
Tech Note 103: Accelerometer Powering with CCD Diode
When connecting a CMCP525/530 Transmitter to a Accelerometer that is already powered by another device the CCD (Constant Current Diode) should be cut to prevent overpowering of the Accelerometer by c
Tech Note 104: Wiring Relays with Common Alarms
CMCP500 (A) Series Monitors may be wired either with individual alarms or with common alarm outputs grouped by machine or system. When wiring common alarms the OK (normally energized) circuit is wire
Tech Note 105: Reversing Normal Thrust Direction CMCP545(A)
CMCP545(A) Transmitters and Monitors ship standard with "upscale towards probe". To change the upscale direction on a CMCP545 from normally towards the probe to normally away and where the range opti
Tech Note 106: Recalibrating CMCP505 Digital Displays >01/01/07
CMCP505 Displays sold after 01/01/07 may be calibrated in the field for a full scale display reading of 00.1 to 1.000. Displays are calibrated at the factory per order requirements. If the full scale
Tech Note 107: Recalibrating CMCP505 Digital Displays <01/01/07
CMCP505 LED/LCD Displays sold prior to 01/01/07 can only be recalibrated to a different full scale by changing resistor R2. The existing R2 resistor may be removed using a soldering iron and sold
Tech Note 108: Installation of Accelerometer Extension Cables
CMCP602 and CMCP603 Accelerometer Extension Cables are compatible with any male MIL-Spec 2 and 3 Pin connectors. Connector back shells are completely potted to meet liquid-tight specifications. T
Tech Note 109: Troubleshooting 500 Series Transmitters
OK Light Off: Check +24VDC Power at bottom left terminals Check to be sure Sensor is wired properly to top left terminals. OK Light will turn on after 30 seconds if sensor is OK. If OK Li
Tech Note 110: Troubleshooting CMCP420VT(T)
Bench testing a CMCP420VT(T) is quite easy and can be accomplished using a 24 VDC power supply and a DVM (Digital Volt Meter) in mA (Amp) mode. Be sure that the fuse in the mA input of your
Tech Note 111: CMCP510 Display Calibration
CMCP510 Displays may be recalibrated in the field for a full scale reading of 000 to 1999. Displays are calibrated at the factory per order to match the requirements specified by the customer. If
Tech Note 112: Vibration Severity Level ISO 10816-1
Vibration Severity Chart 10816-1 Published by ISO by Machine Class. Shaft Speed (RPM) Less than 2 , 000 Greater than 2 , 000 Mounting Drive
Tech Note 113: CMCP420VT(T) Compliance
In General: The output compliance of the CMSS420VT-x has been increased from the original black terminal model such that; a single LED or LCD display and, one external load of 250 Ohms can be use
Tech Note 114: Double Integration of Vibration Signals
STI recommends performing double integration (Acceleration to Displacement) when required by using a CMCP793V Velocity Output Accelerometer and a CMCP535(A) Transmitter or Monitor. As each integr
Tech Note 115: Shunt Resistors
Occasionally a customer will ask us how to interface one of our Transmitters with a 4-20 mA output to a DC Input Field IO Card. What is important to understand is that even a 4-20 mA Input Card u
Tech Note 116: Electro-Mechanical Velocity Sensors
The base model CMCP535-100V vibration transmitter is designed for use with an IEPE (Integrated Electronics Piezo Electric) type velocity sensor. This type of sensor requires constant current sensor p
Tech Note 117: ISO Standard 10816-3
Part 3: Industrial machines with normal power above 15kW and nominal speeds between 120 and 15,000 RPM when measured in situ. Second edition 2009-02-01 Classification according to machine typ
Tech Note 118: What We Need to Know!
A. Machine Train Information: If you would like us to help with the proper application of sensors to your machine we will need to know the following for each case or element of the machine train: 1.
Tech Note 119: CMCP420VT Buffered Output
The CMCP420VT buffered is intended for connection to a portable data collector or analyzer that is isolated (floating) relative to system ground. Connection of this type of instrument will not affect
Tech Note 120: CMCP575 Tachometer Precision Calibration
CMCP575 Speed Transmitters labeled sold after 1/1/2009 feature the new Smart Touch technology which allow users to calibrate the transmitter within 10% of the frequency span simply by depressing t