Telaire T8100NS, T8100NSP Specifications

Ventostat™

®

Amphenol

T8100 NS and
NSP Series

CO2 Sensor

Features

• Patented, Absorption Infrared Gas sensing
engine provides high accuracy in a compact
low cost package.

• Local temperature adjustments with slide pot
and night set override control

• Patented ABC Logic™ self-calibration system
eliminates the need for manual calibration in
most applications.

• Locking screw secures cover and sensor to the
mounting bracket for tamper resistance.

• Dual simultaneous analog outputs (V & mA)
available for CO

• Sensors are shipped factory calibrated.

.

2

• Lifetime CO
using ABC Logic™.

• Mounting plate with two-piece terminal blocks
provide quick, easy wiring.

• Gas permeable, water resistant CO
filter prevents particulate and water
contamination of the sensor.

Advanced Sensors

calibration guarantee when

2

diffusion

2

• Temperature sensor on all models.

• Modern enclosure with customized branding

available.

Ventostat Specifications

Amphenol

Sensing Method

Non-dispersive infrared (NDIR) absorption
Gold-plated optics
Patented ABC Logic self calibration algorithm

CO2 Measurement Range

T8100
0 to 2000 ppm (0 ppm = 0 V, 4 mA; 2000 ppm = 10/5V,
20 mA)

CO2 Accuracy

±30 ppm or 3% of the reading shown, whichever is
higher *

Power Supply Requirements

18-30 VAC RMS, 50/60 Hz, or 18 to 42 VDC, polarity
protected

Power Consumption

Typical 0.7 W at nominal voltage of 24V AC RMS

Temperature Dependence

0.2% FS per °C (±0.11% per °F)

Operating Conditions

32°F to 122°F (0°C to 50°C)
0 to 95% RH, non-condensing

Storage Conditions

-40°F to 158°F (-40°C to 70°C)

Flammability Classification

UL94 5VA

Thermistor Type

NTC 10 kW thermistor

Thermistor Accuracy

±1°C (15° to 35°C)

Night Setback Override Button (NS and NSP)

Shorts the thermistor output when depressed

Slide Potentiometer (NSP Only)

Left (stop) 0k Ohms (±5k W)
Center 50k Ohms (±7.5k W)
Right (stop) 100k Ohms (±10%)

Stability

<2% of FS over life of sensor (15 years)

Pressure Dependence

0.135% of reading per mm Hg

Certifications

CE and RoHS compliant

Signal Update

Every 5 seconds

CO2 Warm-up Time

< 2 minutes (operational)
10 minutes (maximum accuracy)

*C0

accuracy statement excludes standard gas used for

2

calibration that has an accuracy of 2%. In addition, there
is a potential digital to analog error of up to 1%.

ABC Logic™ Self Calibration System

ABC Logic™ (Automatic Background Calibration) self
calibration allows the sensor to continually recalibrate
itself when the indoor concentrations drop to outside
levels while the building is unoccupied. Generally a
building must be regularly unoccupied for 4 hours
or more for this self-calibration system to operate
properly. Under these conditions, ABC Logic™ should
maintain sensor calibration over the lifetime of the
sensor. The ABC Logic™ should be turned OFF where
a building is continuously occupied 24 hours per day,
or where there could be significant sources of non­occupant related CO2 such as greenhouses, breweries
and other industrial and food processing applications.

Output

Analog
0 to 5 V, (100 W output impedance)
0 to 10 V (100 W output impedance) and
4 to 20mA (RL maximum 500 W) available
simultaneously for CO2 output

Advanced Sensors

www.amphenol-sensors.com

© 2014 Amphenol Corporation. All Rights Reserved. Specifications are subject to change without notice.
Other company names and product names used in this document are the registered trademarks or
trademarks of their respective owners.

AAS-920-622A-03/2014