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SI-40-N

  • 4 Sensors: Temperature, Humidity, CO2, VOC
  • 1 Direct Output (Thermistor 10K, Type II): Temperature
  • 3 Analog Outputs (0-10Vdc): Humidity, CO2, VOC
  • 1 Analog Output (0-10k ohms): Set Point Adjustment
  • 2 Digital Outputs (Relay, 1A) Override Push-button, Alarm
  • Selectable Display Screen Options

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 – Model TH

On Board Temperature and Humidity Sensors

SI-40-N – Model TC

On Board Temperature and CO2 Sensors

SI-40-N – Model THC

On Board Temperature, Humidity and CO2 Sensors

SI-40-N – Model THCV

On Board Temperature, Humidity, CO2 and VOC Sensors

Address

10000 St Clair Avenue

Fairview Heights, IL 62208

Phone

(618) 394-0300