- Weather Stations
- Barometric Pressure
- Solar Radiation
Ambient Air Temperature TT-101-QR Temperature Sensor
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The Texas Electronics, Inc. TT-101QR Air Temperature Sensor with the proper signal processor provides a DC signal proportional to ambient temperature. A highly sensitive linear thermistor-resistor network is utilized as the sensing element. Sensors feature direct interchangeability with one another without system recalibration. (See "Calibration/Cleaning Frequency" below.) Air temperature variations create a resistance bridge imbalance, the subsequent output signal varying linearly with temperature. A naturally aspirated sensor shelter is provided which permits temperature measurement substantially free of solar radiation. Exposed shelter components are constructed of aluminum with a white baked-enamel finish for maximum environmental protection. The signal conditioner output voltage may be interfaced with various types of recorders, indicators, dataloggers, etc. as required by the user.
Two or more sensors may be mounted on a tower to obtain vertical temperature profile studies for the measurement of inversion conditions. This differential air temperature may be displayed or programmed, in the same formats as the single sensor.
The TT-101QR now features a quick-release mounting bracket for easy installation and maintenance.
Features & Benefits
- Available in four different temperature ranges
- Signal Conditioner output can be interfaced with indicators or dataloggers
- Quick Release Mounting Bracket provides ease in installation and maintenance
- Sensing element utilizes a highly sensitive linear thermistor-resistor network
- Optional Yellow Springs sensing element available
- Over 25 years in production
- Lightweight and rugged white baked-enamel finished aluminum exterior
Installation & Maintenance
The radiation shield with sensing element can be pole or mast mounted. Whenever possible, sensors should be installed at a height of 4 ft. (1.2 meters) or greater over earth or sod at least 100 ft. (30.48 meters) away from any concrete or other hard-surfaced area and not closer to any other object than four times the height of the object above the instrument shelter or remote sensors. Avoid roof installations if possible. If it is necessary to roof-mount shelters and sensors, they should not be closer than 30 ft. (9.14 meters) to any large, vertical reflecting surface (walls, etc.), exhaust fans, or cooling towers. Electronic remote sensors when roof-mounted should be at least 9 ft. (2.74 meters) or greater above the roof surface. To minimize radiation effects from the roof, they can also be mounted on a horizontal boom so that they will extend from the side of the building roof or tower assembly.
The system is delivered consisting of two principle parts: (1) the radiation shield containing the sensor with 60 feet (18.28 meters) of cable attached; and (2) an electronics package. The radiation shield may be installed with provided clamps in whatever area that it is desired to sense the temperature. The electronic package may be installed within 60 ft. (18.28 meters) of the sensor. Longer cable is available upon request.
Calibration / Cleaning Frequency:
The temperature system should not require calibration, however, the system may be checked for accuracy each six months, if desired. In the event that it is required, field calibration (zeroing and spanning) can be readily accomplished by substituting fixed standard resistor values for the sensor output.
No cleaning program should be required with normal use.
|Ranges Available:|| -40° to +120°F
-60° to +40°C
-40° to +50°C
+60° to +220°F
|Response (Nominal):||Time to reach 90% of DT 0.8 sec./F|
Signal output in many forms, depending on signal processor
|Accuracy:|| +/- 1° within the range of -30° to + 110°F (-34.4° to +43.3°C)
+/- 3° from -30° to -40°F (-34.4° to -40°C) and
+/- 3° from +110° to + 120°F (+43.3° to +48.8°C)
Temperature: -55° to +180°F (operating range: -40° to +120°F)
6.75"H x 7.25"W (17.1cm x 18.4cm)
60 ft. (18.28 meters)
Temperature Sensor Characteristics
|Degrees F||Degrees C||Resistance||Degrees F||Degrees C||Resistance|
Optional Parts / Accessories
|Cable||Additional Cable available upon request|