Troubleshooting Microwave & RF Problems Using Insertion Loss Measurement Understanding the Role of Transmission Line Performance In any wireless communication network, transmission feed line performance directly impacts signal quality, system reliability, and coverage range. Faulty cables, connectors, or antennas can quickly degrade network efficiency, causing dropped calls, data loss, or costly downtime. Insertion loss measurement is one of the most effective diagnostic techniques for assessing the health…
Calibrate Pressure Transmitters Much Easier Now
The Higher the Pressure the Tighter the Seal Ralston NPT Male Quick-connect Adapters make calibrating pressure transmitters much easier. Using a unique pressure-assisted seal the Ralston Quick-test male NPT QD adapter saves time and prevents leaks. Connect to any female NPT process connection without using thread tape or a wrench. This has saved technicians countless hours…
NIST Numbers… What Are They?
What is the official NIST Number on my report? The official NIST number, or the number that NIST uses to keep track of reports, is a long number containing the number for the Division performing the service, the number the NIST Calibration Program Office generates, and the year the service is performed. This number should be on every page of the report. For example, a typical number for our Division (821) is 821/123456-97. Many reports will…
Quickly Create a High Pressure Connection for Calibration, Hydrostatic Testing & Safety Valves
Ralston Tube Fitting Quick-test Adapters Ralston Tube Adapters can make connecting to tube fittings much easier. You can use Ralston Tube Adapters to connect to any brand of tube fitting without a wrench. Simply remove the tube nut and ferrules and then thread on the Ralston Tube Adapter. They seal using an integral o-ring so there are no worries…
Don’t Trust a Zero Shift
PIE Current Leak Detection A current leakage in a process loop, sometimes referred to as a ground fault condition, can be one of the most difficult and frustrating problems to diagnose. Often caused by incorrect grounding, corrosion or moisture, a current leakage will appear as a zero shift in calibration of the loop transmitter. Using a Loop Diagnostic Calibrator like the PIE 334 Plus allows…
Pressure Transmitter Calibration
Digital Manometer Applications High accuracy digital manometers/calibrators like the Meriam M400 are particularly useful as calibrators for pressure transmitters, pressure recorders, and other pressure measuring devices. A typical set-up for transmitter calibration is shown at the right. The digital manometer is connected through a tee to a transmitter and a pressure source (often a hand pump). The 4 – 20 mA…
