Barometers
Comfort Indicator
Number 993
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Features
* Small 3-1/8" color-coded dial
* Inexpensive
* Wire bail for tilt stand or wall hanging
* Combines "Precision" hygrometer and thermometer on single scale that will
stand on table or desk or hang on wall
* Case: Polished brass case
* Range: 10-100% relative humidity, 20-110°F
Features The combination of readings from this hygrometer with
Durotherm element and bimetallic Thermometer indicates |
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Certified Precision Barometer
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Thermo-Hygrograph Model 8145 Model 8145 Thermo-Hygrograph
records precise measurements of temperature and humidity. The Durotherm sensing element
for humidity will not dry out or get brittle with age — but will go on year after
year recording the humidity of the air. It is temperature-compensated by a bimetallic
strip which eliminates the expansion of the Durotherm elements due to temperature
variations. Lufft's Thermo-Hygrographs differ from other manufacturers' units in this
respect. The bimetallic temperature sensing element actuates the arm that records minute
temperature changes. Easily calibrated. Can be certified to NIST
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| SPECIFICATIONS: Model 8145 Range +6 to 120°F, quartz clock drive, uses one AA battery. Can be set at either 7-days, 24 hr, or 31 days Temperature Accuracy: ±1% of full scale Temperature Sensor: Bimetallic spring Temperature Chart Increments: 2° divisions Relative Humidity Range: 0 to 100% Relative Humidity Accuracy: ±3% Relative Humidity Relative Humidity Sensor: Durotherm Element Relative Humidity Chart Increments: 2% divisions Recording Pens: Long-writing felt tipped nibs (two included) Charts: One year supply, 55 charts, included. Case: White aluminum case with wrap around clear acrylic panels. Size & Weight: Length 9-3/4", Width 5", Height 9-1/2", weight 6 pounds. Prices NIST Certification $ 100 |
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Thermo-Hygrograph Model 8147
Thermo-Hygrograph Model 8147 The Model 8147R records precise measurements of both temperature and humidity. The Durotherm sensing element activates the arm that records the humidity and the bimetallic temperature spring activates the arm that records temperature. Easily calibrated. Quartz clock powered by one "AA" Battery. Revolution: Can be set for either 24-hr, 7-day, or 31-day.
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| SPECIFICATIONS: Temperature Range: +6 Temperature Range: +6 to 120°F Temperature Accuracy: ±1% of full scale Temperature Sensor: Bi-metallic spring Temperature Chart Increments: 2° divisions Relative Humidity Range: 20 to 90% Relative Humidity Accuracy: ±3% Relative Humidity Relative Humidity Sensor: Durotherm Element Relative Humidity Chart Increments: 2% divisions
Model 8147R Thermo-Hygrograph $775.04
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Abbeon products |
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 HUMIDITY METERS |
 THERMOMETERS |
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All prices subject to change without notice
