Plot No. 5-5-35/205A, IDA Kukatpally, Hyderabad-500072. India
+91-9010398514
HVAC Solutions

Indoor Air Quality & Pressure Monitoring for HVAC Systems

Ace Instruments HVAC transmitters measure CO, CO2, VOC, particulate matter (PM2.5/PM10), temperature, humidity, differential pressure and ACH, individually or combined in the 6-in-1 IAQ Monitor. Suited for offices, hospitals, laboratories and green building compliance projects across commercial spaces.

CO CO2 Temperature Humidity PM10 PM2.5 VOC Differential Pressure ACH
Ace Instruments HVAC monitoring ecosystem: CO2 transmitter, PM detector, differential pressure transmitter, IAQ monitor and air quality index monitor reporting to a central dashboard
CO2, particulate and differential pressure instruments reporting to one dashboard
35+ Years of Excellence CE Certified Products Trusted by 1000+ Customers Made in India Quick Support & Service
Product Range

Complete HVAC Instrument Range

Room and duct level instrumentation covering CO2, VOC, particulate matter, temperature/humidity and differential pressure, built for HVAC control and indoor air quality monitoring.

6-in-1 Indoor Air Quality Monitor AI-IAQ6-PH

6-in-1 Indoor Air Quality Monitor

Tracks temperature, humidity, VOC, PM2.5, PM10 and CO2 in a single wall-mounted unit with a 3.5" TFT touchscreen, PoE, Wi-Fi or RS485 Modbus connectivity.

Carbon Dioxide CO2 Transmitter AI-CO2

Carbon Dioxide (CO2) Transmitter

Wall-mounted CO2 monitoring for demand-controlled ventilation, with 4-20mA, 0-10VDC or RS485 Modbus output for BMS integration.

Carbon Monoxide CO Transmitter

Carbon Monoxide (CO) Transmitter

Electrochemical CO sensing for confined spaces, parking lots and industrial plants, with 4-20mA/0-10VDC or RS485 Modbus output.

VOC Detector AI-VOC-D

VOC Detector

MOX gas sensor VOC detection for demand-controlled ventilation, offices and pharmaceutical facilities, with 4-20mA or RS485 Modbus output.

Particulate Matter Detector AI-PM-D

Particulate Matter Detector

Laser optical sensing for PM1, PM2.5 and PM10 with dual 4-20mA output and optional RS485 Modbus communication.

Differential Pressure Transmitter AI-DPTX

Differential Pressure Transmitter (AI-DPTX)

Low differential pressure transmitter for HVAC, pharmaceutical clean rooms, hospital rooms and kitchen hoods; can also be configured as a static pressure transmitter.

Duct Carbon Dioxide Transmitter

Duct Carbon Dioxide Transmitter

Duct-mounted photoacoustic CO2 transmitter for HVAC ductwork with configurable ranges up to 10,000 ppm, 4-20mA/0-10VDC output, and optional RS-485 Modbus.

Duct Volatile Organic Compound Detector

Duct Volatile Organic Compound Detector

Duct-insertion TVOC detector using a metal oxide semiconductor sensor (0-500 ppm), with dual 4-20mA outputs, 0-10VDC, and optional RS-485 Modbus RTU.

Temperature Humidity Transmitter (External Probe)

Temperature Humidity Transmitter (External Probe)

Remote-probe temperature (0-50C) and humidity (0-100% RH) transmitter in an IP65 enclosure with RS485 Modbus output, for cold rooms, ducts and enclosures.

Room Type Temperature Humidity Transmitter

Room Type Temperature Humidity Transmitter

Wall-mounted indoor temperature (0-50C) and humidity (0-100% RH) transmitter with graphic LCD, RS-485 Modbus and 4-20mA/0-10VDC outputs for BMS integration.

Oxygen Deficiency Detector

Oxygen Deficiency Detector

Weatherproof O2 monitor with galvanic cell sensor for confined spaces and gas storage rooms, with two-stage alarms, 4-20mA retransmission and optional RS485 Modbus/relay.

Duct Particulate Matter (PM2.5, PM10) Transmitter

Duct Particulate Matter (PM2.5, PM10) Transmitter

Laser-scattering duct sensor measuring PM2.5 and PM10 (up to 1000 µg/m³) plus air temperature, in an IP54 enclosure with RS-485 Modbus.

Carbon Dioxide, Temperature & Humidity Monitor (3-in-1)

Carbon Dioxide, Temperature & Humidity Monitor (3-in-1)

Wall-mounted 3-in-1 monitor using a photoacoustic sensor to track CO2, temperature and relative humidity, with optional RS-485 communication and touchscreen or GLCD display.

CO2 Controller

CO2 Controller

Standalone CO2 controller with photoacoustic sensor (ranges to 20,000 ppm), 4-20mA/0-10VDC outputs, optional relay and RS-485 Modbus, for programmable ventilation alarms.

Hydrogen Detector for Battery Banks

Hydrogen Detector for Battery Banks

Fixed hydrogen gas detector with catalytic combustion sensor (0-100% LEL) for battery rooms, in a flameproof housing with 4-20mA output, optional relays and RS-485 Modbus.

VOC Monitor (with Temperature and Humidity)

VOC Monitor (with Temperature and Humidity)

Wall-mounted 3-in-1 monitor measuring TVOC (0-500 ppm), temperature and humidity on a single Modbus address, with a touchscreen and RS-485 Modbus or Wi-Fi connectivity.

Duct Mounting Humidity Temperature Monitor

Duct Mounting Humidity Temperature Monitor

Duct-mounted polymer capacitive sensor measuring temperature (0-50C) and humidity (0-95% RH), with 4-20mA output for AHU supply/return air monitoring.

IVF Lab VOC Monitor

IVF Lab VOC Monitor

MOX-sensor VOC monitor with temperature and humidity, touchscreen, RS-485 Modbus or Wi-Fi dashboard, and configurable alarms for lab ventilation control.

Server Room Temperature Alarm Monitor

Server Room Temperature Alarm Monitor

Standalone temperature alarm with 4-digit LED display, programmable buzzer for high/low thresholds, wired external sensor and RS485 Modbus, network-independent operation.

Immersion Temperature Sensor

Immersion Temperature Sensor

RTD (Pt100/Pt1000) or NTC thermistor probe for measuring liquid temperature in HVAC systems, -40C to +150C, with optional stainless steel thermowells.

Duct Static Pressure Transmitter

Duct Static Pressure Transmitter

Duct-mounted static pressure sensor for BMS and VAV applications, 0.5% FS accuracy, standard 0-500 Pa range, with jumper-selectable 4-20mA/0-10VDC output.

Duct Carbon Monoxide (CO) Transmitter

Duct Carbon Monoxide (CO) Transmitter

Duct-mounted electrochemical CO transmitter (0-100/250/500 ppm) with 4-20mA or 0-10VDC output, optional RS-485 Modbus and relay, for car park and DCV applications.

Duct Mounted Indoor Air Quality (IAQ) Transmitter

Duct Mounted Indoor Air Quality (IAQ) Transmitter

Multi-parameter duct transmitter combining PM2.5, PM10, VOC, temperature and humidity in one unit, with RS-485 Modbus for BMS integration.

Room Type Dew Point Transmitter

Room Type Dew Point Transmitter

Wall-mounted transmitter with graphic LCD that displays temperature, relative humidity and calculated dew point, with two 4-20mA outputs and RS-485 Modbus.

Differential Pressure Switch (AI-32)

Differential Pressure Switch (AI-32)

Field-adjustable differential pressure switch for AHUs, ventilation systems and cleanrooms, with IP54 protection and 4-20mA or 0-10VDC output for filter monitoring.

Jumbo 4-Inch Humidity Temperature Indicator

Jumbo 4-Inch Humidity Temperature Indicator

Industrial temperature (0-50C) and humidity (0-99.9% RH) indicator with dual 4-inch LED displays, built-in or external sensor option, and optional RS485 Modbus.

10" Indoor Air Quality Monitor (6 Parameters) – LEED & WELL Ready

10" Indoor Air Quality Monitor (6 Parameters) – LEED & WELL Ready

Wall-mounted 10-inch touchscreen monitor tracking CO2, temperature, humidity, PM2.5, PM10 and TVOC, with RS-485 Modbus, optional Wi-Fi and WELL/LEED-ready reporting.

Portable Air Quality Index Monitor

Portable Air Quality Index Monitor

Portable/desktop monitor tracking PM1, PM2.5, PM10, AQI, temperature and humidity on a color TFT display with a rechargeable battery and USB-C charging.

Why HVAC Monitoring Matters

Keeping CO2, VOC, particulate and pressure readings within target range affects occupant comfort, filtration performance and building energy use.

  • Supports demand-controlled ventilation and energy savings
  • Confirms filtration and air handling performance
  • Flags out-of-range conditions with real-time alerts
  • Data available for occupant comfort and facility reporting

Building Management Integration

Transmitters in this range output over Modbus RS485, letting readings feed directly into an existing BMS or DDC controller where applicable to the specific instrument's output configuration.

  • Modbus RS485 output across the transmitter range
  • Direct integration with BMS and DDC controllers
  • CE marked, ISO 9001:2015 certified manufacturer
Compliance

Designed for Global Green Building Compliance

Ace Instruments HVAC and indoor air quality instruments are designed for compliance with, and help ensure compliance with, the ventilation and indoor air quality provisions of the following standards.

Where They're Used

Applications

Empowering buildings with air quality and pressure monitoring across offices, hospitals, education and data centers.

By Category

Our HVAC Solutions

FAQ

Frequently Asked Questions

What are HVAC solutions?

HVAC solutions include instruments and components used to measure, monitor, control, and maintain heating, ventilation, and air-conditioning systems. ACE Instruments provides a range of HVAC-related instruments covering parameters such as differential pressure, temperature, humidity, CO₂, air velocity, and airflow.

What types of HVAC instruments does ACE Instruments provide?

The HVAC range includes Siemens differential pressure sensors, electrohydraulic actuators, room temperature sensors, temperature and humidity sensors, CO₂ transmitters, air velocity sensors, duct sensors, flow switches, differential pressure switches, and humidity-temperature sensors.

Why is differential pressure monitoring important in HVAC systems?

Differential pressure measurement helps monitor pressure differences across HVAC components and spaces. It can be used for applications such as checking airflow conditions, monitoring filters, and supporting fan control. ACE Instruments lists differential pressure sensors and switches within its HVAC instrument range.

How is a CO₂ transmitter used in an HVAC system?

A CO₂ transmitter can provide information about carbon dioxide concentration in an occupied space or air-handling system. This information can be used by a building automation system to monitor indoor conditions and support ventilation control. ACE Instruments offers the AI-CO2-DT and AI-CO2-T as part of its HVAC instrument range.

What is the purpose of a room temperature sensor in HVAC?

A room temperature sensor measures the temperature of the occupied space and provides information that can be used by an HVAC control system. This helps the system maintain the required room temperature according to the configured control strategy.

Why are temperature and humidity sensors used in HVAC systems?

Temperature and humidity measurements provide information about the environmental conditions within a building or HVAC system. These measurements can be used for monitoring and controlling heating, cooling, humidification, and dehumidification processes.

What is a duct sensor used for?

A duct sensor measures an HVAC parameter directly within the air duct. This allows the control system to obtain information from the air being transported through the ventilation system rather than relying only on measurements from the occupied space. ACE Instruments lists Siemens QFM2160 as one of its duct sensor offerings.

What is an air velocity sensor used for?

An air velocity sensor measures the speed of air movement within an HVAC system. Air velocity information can help HVAC engineers and building automation systems assess airflow conditions and verify system performance. ACE Instruments lists the Siemens QVM62.1 Air Velocity Sensor in its HVAC range.

What is the purpose of a flow switch in an HVAC system?

A flow switch detects whether an airflow or fluid flow condition is present. In an HVAC installation, this type of device can be used as part of equipment protection, monitoring, or control sequences depending on the system design. ACE Instruments lists the Siemens QVE1901 Flow Switch among its HVAC instruments.

Can HVAC instruments be integrated into building automation systems?

Yes. Depending on the selected instrument, HVAC measurement and control devices can provide the required signals or communication interfaces for building automation and control systems. The appropriate interface depends on the specific instrument and system requirements.

Does ACE Instruments supply both ACE and Siemens HVAC instruments?

Yes. The HVAC Solutions page includes both ACE Instruments products and Siemens instruments. The listed range includes ACE's AI-CO2-DT/AI-CO2-T as well as Siemens sensors, actuators, switches, and other HVAC components.

Which HVAC applications can these instruments support?

The instruments can be selected for HVAC measurement and control applications involving room temperature, temperature and humidity, differential pressure, CO₂, air velocity, duct conditions, and flow detection. The appropriate product depends on the parameter being measured and the control requirements of the HVAC system.

How do I select the right HVAC instrument?

Start by identifying the parameter that needs to be measured or controlled, such as temperature, humidity, CO₂, differential pressure, air velocity, or flow. Then consider the installation location, required measurement range, output or communication interface, environmental conditions, and compatibility with the existing HVAC control system.

Can ACE Instruments help with HVAC instrument selection?

Yes. ACE Instruments has experience in process-control instrumentation and develops solutions for HVAC, pharmaceutical, healthcare, and related applications. Customers can share their application requirements with the technical team to identify a suitable instrument.

What industries can use ACE Instruments HVAC solutions?

ACE Instruments states that its instrumentation solutions serve industries including pharmaceutical, healthcare, biomedical, manufacturing, and automation. HVAC instruments can be selected according to the requirements of these facilities and their building or process systems.

Can HVAC instruments be used for retrofit projects?

Yes. HVAC sensors, transmitters, switches, and related instruments can be selected for both new installations and existing systems, subject to compatibility with the existing equipment, wiring, control system, and installation conditions.

What information should I provide when requesting an HVAC instrument?

Useful information includes the parameter to be measured, measurement range, installation location, existing HVAC or BMS system, required output or communication protocol, power supply, environmental conditions, and quantity required. Providing these details helps the technical team recommend an appropriate configuration.

Does ACE Instruments provide technical support for HVAC applications?

Yes. ACE Instruments describes its business as combining technical expertise, field experience, product design, and service support. Customers can contact the company for product questions, quotations, and technical assistance.

Can ACE Instruments provide customized HVAC instrumentation solutions?

ACE Instruments states that its R&D and engineering teams work on customized instrumentation solutions based on field requirements, including applications in HVAC, pharmaceutical, healthcare, and bulk drug facilities.

How can I request an HVAC instrument or solution from ACE Instruments?

Share your HVAC application details, required instrument or parameter, quantity, and technical requirements with the ACE Instruments team. The company provides product enquiries, quotations, and technical support through its sales team.

Need Help Specifying the Right HVAC Instruments?

Talk to Ace Instruments about parameter selection, mounting and BMS integration.

Enquire Now