RSA-TTH2A,3,4A Temperature & Humidity Transmitter
Applications & Features
- Humidity and temperature transmitters RSA-TTH2A (duct), RSA-TTH3A (outside) and RSA-TTH4A (remote) are designed for environment monitoring and controlling in industrial and commercial buildings
- High performance digital sensors and circuits, ensure accurate measurement and temperature compensation
- Digital technology applied, multiple outputs optional, over voltage and reverse polarity protection, high reliability 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
- Good long term stability and reliability
- 100% field changeable sensor without re-calibration
- Fast response
- High protection rate up to IP65
Specifications
Relative Humidity Sensor: Digital polymer Range: 0~100%RH Output: see models
Accuracy: 2%, 3%, (25°C, 20~80%RH)
Hysteresis: <±1%RH
Response time: <10s (25°C, in slow air)
Drift: <±0.5%RH / year
Temperature
Sensor: Digital temperature sensor or RTD/thermistor Range: 0~50°C, 0~100°C, -40~60°C, or others Output: 4~20mA (2wires), 0~10VDC (3wires),
RS485/Modbus, or RTD/thermistor: see Models and resistance table
Accuracy: transmitter: ≤±0.4°C @ 5~60°C or 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 more details on LCD & Keys operation
Work Temp.: -30~70°C (LCD: 0~50°C), 5~95%RH (Non cond.)
Housing: Fireproof ABS housing, UHMW-PE filter (H2/H4N), SS probe and sintered filter (H3N)
Protection: IP65
Weight: RSA-TTH2A:360g; RSA-TTH3A:270g; RSA-TTH4A:430g
Approval: CE
Models
- RSA-TTH2A,3,4A series current products are powered by RH circuit, so the RH circuit must be powered. Otherwise it could not work.
- Only when the temperature output is 1 or 2, the temperature range 1-7 is applicable. Otherwise, always use 0 as temperature range selection.
- See resistance table on page 1 of this catalog.
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