The benchtop unit has an accuracy of 0.05 C over the range of -183 to 850 C. This thermometer is programmable to match any probe's constant and coefficients for maximum linearity and accuracy.

The ERTCO-Hart RTD High Precision Thermometer comes complete with the RS-232 interface. An optional mini-printer is available for hard copy output of your measurements.

The specific gravity for a given gas is the ratio of the density of the gas to the density of air. Since the density of air varies markedly with both temperature and pressure, precise measurements should reflect both conditions. Common reference conditions are 0°C at 1 atmosphere.

Hydrometers work on Archimedes principal, that is, the upthrust on the body immersed in a fluid (either liquid or gas) equals the weight of the fluid displaced. According to this principal, the hydrometer will sink until it displaces its own mass. The volume of liquid displaced is indicated by the level of the scale and the density is equal to the mass divided by the volume. Since fluid density fluctuates with temperature, proper temperature corrections must be made. A separate thermometer or a combined hydrometer containing its own thermometer should be used to determine the temperature of the sample.

PLAIN FORM HYDROMETERS

Hydrometers which do not incorporate their own thermometers, an auxiliary thermometer should be used to measure the temperature of the sample and correct for any temperature variations.
COMBINED FORM HYDROMETERS (THERMOHYDROMETERS)

Hydrometers that incorporate their own thermometer inside the body or stem to measure the temperature of the sample. Most of ERTCO's precision plain form hydrometers can be ordered as thermohydrometers on special

The only handheld dry-well available

Includes six-point NIST traceable certificate

If you want to check the accuracy of your thermometers and sensors, but you don't want a bench full of heavy and expensive equipment, the new 9100 HDRC will meet your needs.
This miniature gem breaks traditional portability standards in calibrator technology with the industry's first hand held design. Even at 572 F you can wrap your hand around it and take it anywhere. Nothing comes close to its size, simplicity or convenience.

The 9100 is easy to set up. Plug it in, switch it on and set the temperature you want to check using the fast up/down buttons on the front panel. Display resolution is 0.1 degree for the precision you need.

Put your thermometer or probe in the hole that best matches it diameter and compare its reading to the reading on the 9100. The difference is the error in your device. It's that simple!

To check other temperatures, just change the setting and wait a few minutes. Because the aluminum block is small and fan-cooled, the 9100 won't take as long to heat and cool as one of those heftier models.

At this price, you can put several in your plant to encourage frequent measurement checks!

Each 9100 HDRC includes a NIST traceable calibration certificate with actual data. The 9100 can be converted in the field from C to F, but you should specify your preference when you order. The optional carrying case is virtually unbreakable. Its O-ring gasket and locking clasps protect the 9100 from moisture or other damage.