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MODEL TTH-1315 TEMPERATURE HUMIDITY SENSOR
DESCRIPTION
The Texas Electronics, Inc. Model TTH-1315 Sensor utilized a Rotronics HygroClip S3 Humidity Temperature
Probe with interchangeable sensing elements that do not require calibration.
The unit is encased in a corrosive-resistant spun aluminum radiation shield that allows for wind aspiration and
protection from the sun's UV rays. The shield is finished in white baked-enamel to provide for virtual cosmetic
invisibility while reflecting much of the radiant heat from surrounding objects and the sun.
Overcurrent protection is provided in a NEMA 4X enclosure that is mounted to the angled mounting bracket on
the sensor. Tranzorbs are utilized to protect the sensor and signal conditioning units in an overcurrent situation.
With DC voltage applied to the sensor, the unit will return signal voltages that are linear to the range of the
instrument. Signal conditioning is applied to ensure proper voltages are returned and can be amplified or
modified to a current output to connect to any analog signal processing unit.
SPECIFICATIONS
Humidity Sensor: ROTRONIC HygromerÒ C94
(capacitive)
Temperature Sensor:
RTD Pt100 Ohm, 1/3 DIN
Sensor Protection: Wire Mesh filter (standard) /
foam filter (optional)
Measuring Range: 0-100 % Relative Humidity
-40° to +140°F (-40° to +60°C)
Temperature
Operating Limits: Same as measuring range
Accuracy at
73°F / 23°C:
+/- 1.5% RH and +/- 0.5°F /
0.3°C - standard calibration
+/- 1.0% RH and +/-
04°F / 0.2°C
- special calibration (optional)
Repeatability: Better than 0.5% RH and 0.1°C/
32.18°F
Analog output signals: 0…100% RH = 0…1V
(minimum load >10k ohm)-
40…+140°F = 0…1V (-
40…+60°C)
Analog Signal Resolution 0.02%
RH and 0.1°F