SI-40-N

The simply elegant design of the SI-40-N sets a new standard in aesthetics and functionality to provide superior accuracy and performance, SAP™, for the sensing and control of Temperature, Humidity, CO2 and VOC.  The aesthetic integrity of a building no longer has to be compromised to deliver optimum comfort and performance.  Architects and designers can now work in harmony with engineers and contractors.

High performance cost effective sensing and control capabilities have been designed into the SI-40-Nto provide an integrated solution for indoor air quality management.  Optimum user functionality has been built into every SI-40-N to provide extensive information on the ambient conditions while implementing user-friendly displays for intuitive straight-forward operation.

Analog voltage outputs provide access to humidity, CO2 and VOC conditions and direct connection to an on board thermistor for temperature provide the necessary sensing to the input of remote devices.

Network Communication:  None

Time
Real Time Clock: Super Cap Back-up

Power
Nominal Input Voltage: 24 VAC/VDC
Input Voltage Range: 21-28 VAC, 16-28 VDC
Typical Consumption: 4 VA
Maximum Consumption: 6 VA

Environmental
Operating Temperature: -0 °C to +50 °C, 32 °F to 122 °F
Storage Temperature: -20 °C to 70 °C, -4 °F to 158 °F

Temperature
Display Range: 0 to 50 °C (32 to 122 °F)
Accuracy: ±0.5 °C, ±1.0 °F

Temperature Sensor Output: On board Thermistor, 10KType II
Accuracy: ±0.5 °C, ±1.0 °F (0 to 50°C)

Humidity
Display Range: 0.0 to 100.0 Percent
Accuracy: ±2% RH (10 to 90%)

Humidity Analog Output: 0-10 VDC
Resolution: 12 Bit
Accuracy: ±1%FS (25°C, 77°F)
Protection Circuitry: ESD

CO2
Display Range: 0 to 2000ppm
Sensor:    Non-Dispersive Infrared (NDIR)
Accuracy: ±30ppm ±2% of measured value (25°C, 101.325kPa)
Repeatability: ±20ppm ±1% of measured value

CO2 Analog Output: 0-10 VDC
Resolution: 12 Bit
Accuracy: ±1%FS (25°C, 77°F)
Protection Circuitry: ESD

VOC
Display Range: 0 to 10.0
Sensor:    Metal Oxide Semiconductor

VOC Analog Output: 0-10 VDC
Resolution: 12 Bit
Accuracy: ±1%FS (25°C, 77°F)
Protection Circuitry: ESD

Output – Set Point Adjust
Resistance Range: 0-10K ohms
Accuracy: ±0.5°C, ±1.0°F (0 to 50°C)

Output – Override Push Button
Digital Output: Relay (Normally Open Contact)
Rating: 1A @ 24V AC/DC

Output – Alarm
Digital Output: Relay (Normally Open Contact)
Rating: 1A @ 24V AC/DC

Enclosure
Dimensions: L 5.14” x W 3.13” x H 1.04” (130.6 x 79.5 x 26.4 mm)
Material: ABS, UL 94-VO rated

Warranty
Period: 2 Years (Limited)

SI-40-N, Datasheet
 

SI-40-N, Application Manual

SI-40-N —

Model TH: On Board Temperature and Humidity Sensors

Model TC:  On Board Temperature and CO2 Sensors

Model THC: On Board Temperature, Humidity and CO2 Sensors

Model THCV: On Board Temperature, Humidity, CO2 and VOC Sensors