ACI Industrial Sensors

ACI is a leading manufacturer of high-quality industrial sensors for HVAC, building automation and plant and environmental monitoring applications. Their broad product portfolio includes standards-compliant and innovative temperature, humidity, pressure, current, air quality/CO2, wireless and specialty sensors designed for accurate, dependable measurement and control in sensor-intensive systems. ACI is committed to manufacturing excellence, calibration quality and the rugged, long-term stability of every product manufactured.

ACI highlights the long-term stability, accuracy and calibration integrity of each of its key sensor technology lines. ACI describes the multiple mechanical and electronic design details built into each sensor to result in superior lifetime signal quality, minimal sensor drift and resistance to harsh installation conditions. ACI sensors are designed for long life and known to be well-built, robust products that hold their calibration.

ACI sensors are engineered for ease of integration in BMS, DDC, building/industrial automation and facility/process monitoring systems. Sensors support BACnet, Modbus, analog voltage or resistance (RTD/thermistor), dry contact relay, digital I/O and digital/analog current outputs to interface directly with system controllers.

Found 677 items
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Found 677 items
Manufacturer
ACI (677)
Component
Air Quality (6)
Current Sensor (30)
Current Switch (1)
Current Transformer (40)
Gas (385)
Smoke Detection (12)
(Instrument-Sensor) Measurement Accuracy
1% (94)
2% (261)
3% (232)
5% (4)
(Instrument-Sensor) Mounting
Duct (119)
Wall Plate (28)
(Instrument-Sensor) NEMA Protection
NEMA 3R (33)
NEMA 4X (84)
(Instrument-Sensor) Output Signal Range
0 - 5 VDC (8)
0 - 10 VDC (12)
0-5 VDC (72)
0-10 VDC (72)
1 - 5 VDC (1)
2 - 10 VDC (30)
4 - 20 mAmp (166)
Normally In Stock
ACI 122661 A/RH2-CP-D Duct Humidity
Free U.S Ground shipping
$221.76
$184.80
Normally In Stock
ACI 138320 A/RH2-1.8K-SP-010 Wall Plate Humidity
Free U.S Ground shipping
$221.26
$184.38
Normally In Stock
ACI 122687 A/RH2-D Duct Humidity
Free U.S Ground shipping
$215.21
$179.34
Normally In Stock
ACI 122882 A/RH3-CP-O Outside Air Humidity
Free U.S Ground shipping
$191.02
$159.18
Normally In Stock
ACI 122792 A/RH3-TT1K-D-4X-4 Duct NEMA 4X Humidity
Free U.S Ground shipping
$256.03
$213.36
Normally In Stock
ACI 122913 A/RH3-CSI-O Outside Air Humidity
Free U.S Ground shipping
$179.93
$149.94
Normally In Stock
ACI 122590 A/RH2-TT1K-D-4X-4 Duct NEMA 4X Humidity
Free U.S Ground shipping
$286.27
$238.56
Normally In Stock
ACI 122708 A/RH2-R Room Humidity
Free U.S Ground shipping
$211.18
$175.98
Normally In Stock
ACI 126182 A/RH1-TT1K-O-4X-4 Outside Air NEMA 4X Humidity
Free U.S Ground shipping
$449.57
$374.64
Normally In Stock
ACI 131093 A/RH3-10K-E1-D-3.25"-EH Duct Humidity
Free U.S Ground shipping
$173.88
$144.90
Normally In Stock
ACI 146522 BN2130-R2
Free U.S Ground shipping
$235.44
$196.20
Normally In Stock
ACI 148191 A/RH2-R-NIST Room Humidity
Free U.S Ground shipping
$250.49
$208.74
Normally In Stock
ACI 133793 A/RH3-10K-E1-R2 Room Humidity
Free U.S Ground shipping
$170.35
$141.96
Normally In Stock
ACI 137072 A/RH3-CP-O-SUN Outside Air Humidity
Free U.S Ground shipping
$374.47
$312.06
Normally In Stock
ACI 151393 Humidistat Duct
Free U.S Ground shipping
$57.52
$47.93
Normally In Stock
ACI 122922 A/RH3-D-010 Relative Humidity Sensor
Free U.S Ground shipping
$179.42
$149.52
Normally In Stock
ACI 152898 A/RH2-TTM1K-D-4X-2-5PTNIST Relative Humidity Sensor
Free U.S Ground shipping
$400.18
$333.48
Normally In Stock
ACI 152961 A/RH2-AN-R2SO-A03-B4 Relative Humidity Sensor
Free U.S Ground shipping
$250.99
$209.16
Normally In Stock
ACI CONFIGNIST67 A/RH2-CP-O-NIST Relative Humidity Sensor
Free U.S Ground shipping
$352.80
$294.00
Normally In Stock
ACI CONFIGNIST68 A/RH2-CP-O-SUN-NIST Relative Humidity Sensor
Free U.S Ground shipping
$650.66
$542.22
Normally In Stock
ACI 142736 A/RH3-AN-O-BB Relative Humidity Sensor
Free U.S Ground shipping
$184.46
$153.72
Normally In Stock
ACI CONFIGNIST87 A/RH2-100-2W-R-NIST Relative Humidity Sensor
Free U.S Ground shipping
$289.80
$241.50
Normally In Stock
ACI CONFIGNIST74 A/RH3-CP-R-NIST Relative Humidity Sensor
Free U.S Ground shipping
$286.27
$238.56
Normally In Stock
ACI 152943 A/RH3-AN-RS-A03-B4 Relative Humidity Sensor
Free U.S Ground shipping
$235.37
$196.14
Normally In Stock
ACI CONFIGNIST73 A/RH3-20K-R-NIST Relative Humidity Sensor
Free U.S Ground shipping
$243.43
$202.86
Normally In Stock
ACI CONFIGNIST97 A/RH2-CP-R2-NIST Relative Humidity Sensor
Free U.S Ground shipping
$310.97
$259.14
Normally In Stock
ACI 152887 A/RH2-CP-R2S-A02-G5 Relative Humidity Sensor
Free U.S Ground shipping
$93.24
$77.70
Normally In Stock
ACI 152875 A/RH3-AN-R2SO-A18-G5 Relative Humidity Sensor
Free U.S Ground shipping
$93.74
$78.12
Normally In Stock
ACI 151433 RH Sun Shield Platinum RTDs
Free U.S Ground shipping
$437.98
$364.98
Normally In Stock
ACI 151590 RH Room Thermistor
Free U.S Ground shipping
$172.87
$144.06
Normally In Stock
ACI 151591 RH TT Room
Free U.S Ground shipping
$263.09
$219.24
Normally In Stock
ACI 151595 RH Duct Thermistor
Free U.S Ground shipping
$173.88
$144.90
Normally In Stock
ACI 151618 RH Duct Thermistor
Free U.S Ground shipping
$201.10
$167.58
Normally In Stock
ACI 151653 RH Room Thermistor
Free U.S Ground shipping
$172.87
$144.06
Normally In Stock
ACI 152478 Relative Humidity, RH Outputs: 0-5VDC (Default)
Free U.S Ground shipping
$332.64
$277.20
Normally In Stock
ACI 152305 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$405.72
$338.10
Normally In Stock
ACI 152376 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$227.30
$189.42
Normally In Stock
ACI 152522 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$253.51
$211.26
Normally In Stock
ACI 152452 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$219.24
$182.70
Normally In Stock
ACI 152395 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$203.11
$169.26
Normally In Stock
ACI 152500 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$174.89
$145.74
Normally In Stock
ACI 152182 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$173.88
$144.90
Normally In Stock
ACI 152385 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$179.93
$149.94
Normally In Stock
ACI 152771 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$179.93
$149.94
Normally In Stock
ACI 152288 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$218.23
$181.86
Normally In Stock
ACI 152441 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$179.93
$149.94
Normally In Stock
ACI 152574 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$173.88
$144.90
Normally In Stock
ACI 152302 Relative Humidity, RH Outputs: 0-5
Free U.S Ground shipping
$392.11
$326.76

More Information about ACI Industrial Sensors

ACI offers a wide range of sensor element types, mechanical form factors, wiring terminations, mounting accessories and enclosures for ease of application in retrofit or new construction. ACI provides exceptional installer and integration support, product documentation and product modifications to solve special sensing applications. ACI’s industrial sensor lines have long been known for accuracy, reliability and flexibility. ACI’s sensors have been and continue to be trusted by HVAC, Facilities Management and Industrial Automation professionals.

FAQs

What types of HVAC and building control applications use ACI industrial sensors?

ACI sensors are widely used in HVAC control, air handling units, building automation systems, hydronic systems, and environmental monitoring because they provide accurate measurement of temperature, humidity, pressure, CO2, current, and other critical building variables.

Why are ACI sensors known for long-term reliability in building automation?

ACI builds its sensors with high-quality components, strong signal stability, and robust housings that resist moisture, vibration, and electrical interference. This ensures long-lasting accuracy and reduces maintenance costs across the lifespan of building systems.

How do ACI sensors support energy efficiency in commercial buildings?

ACI sensors deliver precise data to BAS controllers, enabling optimal equipment cycling, demand-control ventilation, and real-time load verification. By preventing over-operation of HVAC components, they help lower utility costs and improve system efficiency.

Are ACI sensors easy to install for contractors and technicians?

Most ACI sensors come in installer-friendly formats with clear wiring diagrams, flexible mounting options, and compact housings. Their straightforward design reduces installation time and makes them ideal for large-scale commercial projects.

What sets ACI apart from other HVAC and BAS sensor manufacturers?

ACI focuses on specialized building automation solutions, offering extensive customization, fast lead times, and high sensor reliability. Their customer support and industry expertise make them a preferred choice among contractors and BAS integrators.

Why Buy ACI Industrial Sensors from RSP Supply

RSP Supply provides a comprehensive selection of ACI industrial sensors backed by expert support, fast shipping, and competitive pricing. Our team helps you find the right sensor solution for HVAC, automation, and environmental monitoring applications to ensure accuracy, reliability, and system performance.