Go to GlobalSpec.com Home
Newsletter   FREE GlobalSpec e-Newsletters
Receive the latest news, trends, and technology relevant to your work.
(See Titles)

Important Information Concerning Mercury

From Palmer Wahl Instrumentation Group
 

 

Per National Bureau of Standards-NBS Monograph 90 Mercury separations commonly occur as a result of exposure to shock and rough handling during shipment. This condition can generally be corrected by carefully following the procedure below, which was developed by the National Bureau of Standards (now NIST). Please read the instruction completely before attempting the repair. Contact Palmer Instruments (800) 421-2853 if you have questions, or if we can assist you in any way.

Many inquiries are received concerning separated mercury columns, particularly after shipment. Since no means of avoiding such occurrences has yet been found, the recourse of stating some directions for joining the mercury is adopted. The process of joining broken columns consists of one or a series of manipulations which may be effective, and these are briefly described here.


Products & Services
Digital thermometers are portable temperature sensing devices that have permanent probes and a digital display. Search by Specification | Learn more about Digital Thermometers
Laboratory thermometers are used to measure temperatures or temperature changes with a high degree of precision.  Traditional liquid-in-glass design offers ease of use and low cost. Search by Specification | Learn more about Laboratory Thermometers
Resistance temperature detector (RTD) temperature transmitters convert RTD resistance measurements to current signals, eliminating the problems inherent in RTD signal transmission via lead resistance. Search by Specification | Learn more about RTD Temperature Transmitters
Thermocouple temperature transmitters convert the small millivolt output of a thermocouple to a current signal (typically 4-20 mADC) that is immune to noise and voltage drops over a long distance. Search by Specification | Learn more about Thermocouple Temperature Transmitters
Thermistor temperature probes sense temperature by using thermistors, devices made of semiconductor materials which exhibit a large change in resistance for a small change in temperature. Search by Specification | Learn more about Thermistor Temperature Probes

Product Announcements
Palmer Wahl Instrumentation Group - Rigid Dial Thermometer Mercury Actuated
Direct-Drive Double-Wound Bourdon Coil With this type of construction, the pointer shaft operates directly from the center coil. This eliminates the conventional sector and pinion type movement and... (read more)
Palmer Wahl Instrumentation Group - Direct Drive Remote Reading Dial Thermometer
3 ½" Direct Drive Remote Reading Dial Thermometer Flush mounted model. Fully adjustable all angle case awith Rotatable Dial Face or optional Fixed Back Connected. Type 302 Staninless Steel Case. (read more)
Palmer Wahl Instrumentation Group - Industrial Thermometer
Flexibility Just two screws permit cases to be rotated 180° and stem to be positioned in 10° increments, for most desirable viewing position. Easy Readability Lens front red-reading, mercury-filled... (read more)
Control Company - Traceable® Hygrometer/Therm./Baro./Dew Point Pen
Portable - Easy operation Quick response Minimum and Maximum Memory Measure temperature, humidity, barometric pressure and dew point in the palm of your hand. At the press of a button, unit recalls... (read more)
Joining Technologies / Laser Joining Technology - Quality Metal and Micro Welding Services
Joining Technologies offers a spectrum of modern materials joining services. Focused on non-contact processes that include Laser, Electron Beam and Transferred Arc Welding, we will match your joining... (read more)
Joining Technologies / Laser Joining Technology - High-Speed Laser Welding Services
Joining Technologies performs ultra-high precision welding for demanding applications using the most modern laser equipment available today. Our experienced laser welding engineers have the knowledge... (read more)
Control Company - Traceable® Refrigerator/Freezer Thermometers
Accurately monitor temperatures in freezers, water baths, heating blocks, incubators, and refrigerators with this enclosed temperature-buffered" sensor. Bottle insulates sensor from rapid temperature... (read more)
Datatronics™ - CT Series Current Sense Transformers
CT Series Current Sense Transformers manufactured by Datatronics Distribution, Inc., now meet the requirements of European Directive 20002/95/EC governing the manufacture of electronic components... (read more)
Solar Light Company, Inc. - SPF Testing 6 port Solar Simulator
Delivery on 601 Multiport is stock to two weeks. Every product is calibrated to NIST traceable standards before shipment. 1 year Standard Warranty. Lifetime free telephone technical support. Extended... (read more)
Control Company - Traceable® Jumbo Refrigerator/Freezer Thermometer
Perfect jumbo digit thermometer for monitoring freezers, water baths, heating blocks, incubators, and refrigerators. Accurately monitor temperatures with this enclosed temperature-buffered sensor. (read more)

Topics of Interest
NIST stands for National Institute of Standards and Technology. The institute is a government agency, which started out as the National Bureau of Standards (NBS) and changed its name in 1988. (Many... (Read More)
FIPS PUB 199 _____________________________________________________ FEDERAL INFORMATION PROCESSING STANDARDS PUBLICATION Standards for Security Categorization of Federal Information and... (Read More)
10.1 OVERVIEW 10.1.1 Traceability to National Standards Before discussing focused calibrations, we should review the purpose and process of instrument calibration in general. Calibration is the... (Read More)
Overview Calibration and Reasons to Calibrate When one buys gasoline for the car, one expects to get exactly one gallon of gas when paying for one gallon. When one takes a child's temperature,... (Read More)
AMS Analysis and Measurement Services Corporation ANO Arkansas Nuclear One ANSI American National Standards Institute APD amplitude probability density AR... (Read More)