Time standards and frequency standards can include cesium or rubidium atomic clocks, quartz oscillators, hydrogen masers and other master clocks. Time reference sources are used in networks & telecommunications, observatories, utilities and navigation (GPS). Learn More about Time and Frequency Standards

Optical time domain reflectometers (OTDR) measure the elapsed time and intensity of light reflected along an optical fiber. They are useful tools for locating problems in an optical network as they can compute the distance to breaks or attenuation. Search by Specification | Learn More about Optical Time Domain Reflectometers

Ultrasonic sensors reflect acoustical signals and calculate distance based on the signal’s return time and the measurement medium’s propagation velocity. Variable reluctance sensors are also available. Selecting linear position sensors... Search by Specification | Learn More about Linear Position Sensors

Humidity measurement instruments test for absolute humidity, relative humidity, or dew point in air. Search by Specification | Learn More about Humidity Measurement Instruments

Liquid flow meters are used for measuring the flow or quantity of a moving fluid. Search by Specification | Learn More about Liquid Flow Meters

Dimensional measurement and metrology services use mechanical gaging, CMM measurement, non-contact imaging or other specialized methods to inspect and measure part dimensions and geometry. Search by Specification | Learn More about Dimensional Measurement and Metrology Services

Time of flight optical sensors determine displacement and distance by measuring the time it takes light to travel from the instrument to a target and back. Search by Specification | Learn More about Time of Flight Optical Sensors

...and sensors; RTD elements and transmitters; and thermistors, thermocouples, thermopiles, and thermal switches. There are two basic methods for temperature measurement, contact and noncontact. Within these two groupings, an engineer is likely to come... Search by Specification | Learn More about Temperature Instruments

Product and component testing services is the evaluation of a finished product or component through performance in electrical, life, environmental exposure, dynamic, ergonomic or other specialized tests. Also testing to standards such as UL 489, CE or MIL-STD 810. Search by Specification | Learn More about Product and Component Testing Services

Ultrasonic flow meters use sound waves to determine flow rates. They can be either Doppler Effect meters or Time-of-Flight meters. Search by Specification | Learn More about Ultrasonic Flow Meters

...a monochromator in cascade with the optical spectrum analyzer can lessen this effect. Michelson interferometer based optical spectrum analyzers are used for direct coherence-length measurements as well as very accurate wavelength measurements. Other types... Search by Specification | Learn More about Optical Spectrum Analyzers

Volumetric liquid flow switches measure the flow or quantity of a moving fluid in terms of a unit of volume per time, such as liters per minute. These flow sensing devices have a switch output. Search by Specification | Learn More about Volumetric Liquid Flow Switches

Interface level measurement equipment includes sensors and meters for the detection and measurement of interface levels between different media, such as oil/water interfaces and liquid/solid interfaces. Learn More about Interface Level Measurement Equipment

Time delay relays and solid state timers use solid state electronic devices to provide a time delay. Search by Specification | Learn More about Time Delay Relays and Solid State Timers

Thickness gages are used to make precise dimensional measurements on a wide variety of coatings and materials including steel, plastic, glass, rubber, ceramics, paint, electroplated layers, enamels, etc Search by Specification | Learn More about Thickness Gages