RSA-TTH1A Room Temperature & Humidity Transmitter

Applications & Features

• It is designed for indoor air temperature and humidity measurement
• High performance digital sensors & circuits, ensure accurate measurement & temp. compensation
• Good long term stability and reliability
• 100% changeable sensors without re-calibration
• Fast response
• State of art housing design, easy installation & wiring
• All electrical terminals are on the inside bottom, avoid any possible destroy to PCB when wiring
• Digital technology applied, multiple outputs optional, over voltage and reverse polarity protection, high relia- bility and anti-interference capability
• LCD display temperature and humidity alternatively
• LCD & function keys can set parameters and calibrate output, so the product can be a stand alone controller

Specifications

Relative Humidity Sensor: Digital polymer
Range: 0~100%RH
Output: 4~20mA (2 wires), 0~10VDC (3 wires), RS485/Modbus
Accuracy: 2, 3%RH (25°C, 20~80%RH)
Hysteresis: <±1%RH
Response time: <10s (25°C, in slow air)
Drift: <±0.5%RH/year
Temperature
Sensor: Digital, RTD or thermistor, see models
Range: 0~50°C
Output: 4~20mA (2wires), 0~10VDC (3wires), RS485/Modbus, or RTD/thermistor: see Models and resistance table
Accuracy: transmitter: <±0.4°C(0.3°C )@5~60°C RTD or thermistor: typical 0.2~0.4°C@ 25°C, see models
Power: Current: 18.5~35VDC (RL=500Ω)； 8.5~35VDC (RL=0Ω)
Voltage: 16~28VAC/ 16~35VDC
Output Load: ≤500Ω (current), ≥2KΩ (voltage)
Relay output: 2×SPST, 3A/30VDC, 3A/250VAC
Display and Keys: 4 digits LCD, with unit indication, backlight (4-20mA N/A), 3 touch keys, see details on LCD & Keys operation
Display Resolution: 0.1°C, 0.1%RH
Temp. Limit: -20~70°C, 5~95%RH (Non cond.)
Storage Temperature: -20~80°C
Housing: ABS+PC
Protection: IP30
Weight: 110g
Approval: CE

Models

1. RSA-TTH1A series current products are powered on RH circuit, so the RH circuit must be powered. Otherwise it could not work.
2. Only when the temperature output is 1 or 2, the temperature range 1-7 is applicable. Otherwise, always use 0 as temperature range selection.
3. See resistance table on page 1 of this catalog.
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