Manual Thermometers
Mercury, non-mercury (liquid in glass), or bimetallic thermometers with analog displays, for general and application-specific use, with various temperature-range capacities and accuracies; may be traceable or certified to international standards.
In 1714, the mercury-in-glass thermometer was invented in Europe by physicist Daniel Gabriel Fahrenheit. Typically, the mercury is contained in a reservoir that opens to narrow glass tube. The distance that the mercury flows into the tube is dependent on the temperature to which the thermometer is subjected. The space above the mercury may be filled with air or an inert gas, or it may be a partial vacuum.
Thermometers are calibrated by exposing them to a known temperature and then marking the height of the mercury at that temperature. For example, one might calibrate to the freezing temperature of water (0°C or 32°F) by placing the thermometer in a mixture of ice and water. Then the thermometer could be submerged in boiling water to determine the point where the water changes from a liquid to a vapor (100°C or 212°F).
Mercury thermometers are still considered to be some of the most accurate temperature indicators. They can be used for a wide range of temperatures, from -37°C to 356°C (-35°F to 673°F). Modifications such as adding an inert gas above the mercury or replacing the glass with fused quartz can extend the upper temperature limit to as high as 800°C (1,470°F).
Mercury cannot be used below -38.83°C (-37.89°F), the temperature at which it becomes a solid. Moreover, nitrogen in the thermometer can flow down into the column and become trapped if the mercury solidifies, which makes the thermometer unusable. Use a thermometer that contains a mercury-thallium alloy for measuring lower meteorological temperatures – it will remain liquid to -61.1°C (-78.0°F).
Thermco Products Inc Precision lab Hg thermometer, Fractional degree, -1 deg./201 deg.C, 0.2 deg.C div, 76mm imm, 610mm
High precision mercury SAMA thermometer that meet or exceed the specifications of the American National Standards Institute. Specifications approve by N.I.S.T. and ASTM. Individually serialized and permanetly marked. Made with precision yellow backed tubing. SAMA No. CP50
Thermco Products Inc NIST Traceable Thermometer, -1/201C x 0.5C, Blue Spirit, 76mm Imm, 430mm long, Factory Certified @ 0, 25, 37, 44.5, 56, 105, 121, 180, 200C
Thermco Certified Thermometers are used in temperature verification and calibration procedures. These instruments can be used to calibrate Liquid-In- Glass, RTD, Thermistors, Thermocouples, and Bi-Metal Thermometers. The certified thermometers are carefully inspected to insure they conform to exact specifications and are certified against NlST standards. Each thermometer is furnished with a document proving traceability and a felt-lined leatherette storage case.
Thermco Products Inc Accu-Safe Enclosed Chamber Bottle thermometer, Incubator, Spirit, 25 deg./45 deg.C, 0.1 deg.C div, 190mm, 60ml bio-safe glycol/H2O
NC0634163 INCUBATOR THERMOMETER 25-45 DE
Thermco Products Inc THERMOMETER
NIST traceable - Factory Certified Non-Mercury Glass Thermometers - Spirit Filled, -1/51C x 0.1C Partial immersion, Cert @ 0, 10, 20, 30, 37, 40, 50C
Thermco Products Inc Incubator Enclosed Bottle Thermometer, 18/50C x 0.5C, Red Spirit, Bio-Safe Glycol/Water - 30 ml, Certified
NC0796075 ACCUSAFE INCUBATOR THERMOMETER
Deltatrak Inc CERT REFRIG/FREEZ THERMOMETER, Packaged individually
The 12237 Certified Alarm Thermometer comes with a Min/Max memory, a large, easy-to-read LCD, and high/low alarm settings. The thermometer monitors temperature inside freezers, refrigerators, or cold holding display cases. The sensor has a 3 meter cable and a stainless steel, blunt probe enclosed in a sealed plastic bottle of propylene glycol. This enclosure prevents false alarms because the measurements of the probe are not impacted by rapid temperature fluctuations caused by frequent door openings that occur.Measurement Range -58F to 158F (-50C to 70C) Operating Range 14F to 122F (-10C to 50C) Accuracy 1.0F (-22F to 131F) 0.5C (-30C to 55C); otherwise 1.8F (1.0C) Display Resolution 0.1F/C Display Reading Update 10 seconds. High and Low Alarms with audible buzzer and flashing red light. Display in C/F Certification/Calibration CE mark, NIST traceable, RoHS, WEEE; Manufacturers Certificate of Compliance
Thermco Products Inc Accu-Safe Enclosed Chamber Bottle thermometer, Refrigerator, Spirit, -2 deg./10 deg.C, 0.1 deg.C div, 240mm, 60ml bio-safe glycol/H2O
NC0621888 SPIRIT REFRIG THERMO-2 TO 10C
Thermco Products Inc General lab Hg thermometer, -10 deg./400 deg.C, 2 deg.C div, 76mm imm, 405mm
Mercury filled thermometer, yellow back tubing, with toughened bulbs. Suspension ring for hanging, vertical numbering. Individual serial numbered. Packed in non-roll square tubing. Permanent markings.
Thermco Products Inc Precision lab Hg thermometer, Fractional degree, -1 deg./201 deg.C, 0.1 deg.C div, TOTAL imm, 610mm
High precision mercury SAMA thermometer that meet or exceed the specifications of the American National Standards Institute. Specifications approve by N.I.S.T. and ASTM. Individually serialized and permanetly marked. Made with precision yellow backed tubing. SAMA No. CT50
VWR INTERNATIONAL INC Oven Thermometer (with 30 mL bottle of Glass Beads)
Range: +20 to 130°C, Length: 145 mm, Accuracy: ±1.5°C; ±2°C above 100°C, Divisions: 1°C
Ptc Instruments 10° to 400°C Magnetic Surface Thermometer 314C
10° to 400°C Magnetic Surface Thermometer with, Aluminum Dial and 2 Magnet Base.
Certifications include; as received and as returned data, a statement of uncertainty, laboratory conditions, and information on the primary standards.
