Greystone Humidity Sensor Manual
Lauro Pericles
Built-in relative humidity, temperature sensors. Measured values are also converted to other humidity interpretation: dew point temperature, absolute humidity, specific humidity, mixing ratio, specific enthalpy.
Accurate temperature measurement is the foundation of any building control system. ACI has temperature sensors to fit every application and meet the most demanding specifications. Our temperature sensors are double-encapsulated to ensure durability. ACI has the manufacturing flexibility to produce unique solutions for all volume needs.
ACI humidity sensors are durable, accurate, reliable, and backed by a five-year warranty on the entire device. They can be field calibrated to reduce operating costs and paired with a temperature sensor to reduce installation costs.
ACI power meters can reduce energy consumption through predictive maintenance, identification of underperforming equipment, calculation of ROI, and many other measurements. They can communicate with a BMS or work as stand-alone data loggers. ACI has the technical knowledge to ensure your installation is on time and on budget.
Controlling IAQ is critical to maximizing building performance and occupant health/safety. ACI sensor solutions for IAQ include VOC and PM (volatile organic compound and particulate matter), CO2, temperature, and humidity with options to fit every application.
ACI offers additional products such as freeze stats, smoke detectors, power supplies, light level sensors, leak detectors, mounting clips/brackets, and others. Please contact us for technical and application support.
Indoor air quality (IAQ) is a major concern to businesses, schools, building managers, tenants, and workers because it can impact the health, comfort, well-being, and productivity of the building occupants.
ACI is actively expanding, and we are looking for qualified individuals to join our team. Discover your next career opportunity by browsing our active job postings ranging from entry-level manufacturing roles to upper management positions.
ACI is comprised of many talented people willing to help you. Find a Sales Representative, a Customer Support member, or a Technical Support individual to assist you with your needs. We hope to hear from you soon!
Read these instructions carefully before installing and commissioning the humidity transmitter. Failure to follow these instructions may result in product damage. Do not use in an explosive or hazardous environment, with combustible or flammable gases, as a safety or emergency stop device or in any other application where failure of the product could result in personal injury. Take electrostatic discharge precautions during installation and do not exceed the device ratings.
- Deactivate the 24 Vac/dc power supply until all connections are made to the device to prevent electrical shock or equipment damage.Use 14-22 AWG shielded wiring for all connections and do not locate the device wires in the same conduit with wiring used to supply inductive loads such as motors. Make all connections in accordance with national and local codes.Pull at least six inches of wire into the enclosure, then complete the wiring connection according to the wire diagram for the applicable power supply and output signal type as shown in Figure 7.Select desired signal output type (mA or Vdc) by setting switch on PCB to desired output configuration (mA or V) as shown in Figure 5.If mA was selected, no further Output set up is required. If VOLT output is selected in Figure 5, Set DIP switch for desired voltage output as shown in Figure 6. Setting one DIP switch to ON position will select the output (10V, 5V or 1V). NOTE: Only one of the Voltage select switches should be in the ON position.Connect the DC positive or the AC voltage hot side to the PWR terminal. For voltage output or AC power, the supply Common is connected to the COM terminal. The device is reverse voltage protected and will not operate if connected backwards. It has a half-wave power supply so the supply Common is the same as the signal Common. See Figure 7.The analog output is available on the OUT terminal. Check the controller Analog Input to determine the proper connection before applying power as shown in Figure 7.If installed, the resistance temperature output is available on the two terminals labeled TS1 and TS2 as shown in Figure 8.The RH and Temperature sensor PCB can be field replaced by removing filter at end of Duct Probe. Please refer to the product submittal sheet for replacement sensor selection.
Greystone Energy System HTRC series are the Humidity/Temperature transmitter which incorporates two sensors in one attractive wall mount enclosure for the most efficient environmental monitoring and control system. It uses a field-proven RH sensor to monitor relative humidity and a curve matched thermistor to measure temperature and provides two analog outputs of either 4-20 mA, 0-5Vdc or 0-10 VDC.
Greystone AIR4100 Room Air Quality Transmitter Provides an output of 0-5 or 0-10 Vdc linear analog signal output for connecting to a building automation system as well as analog 0-10Vdc output that is stepped. There are add-on features available, including a temperature sensor, manual override, and adjustable relay output.
The GS-CMA Series are carbon monoxide gas detectors. They use an electrochemical sensor to monitor the carbon monoxide level and output a field-selectable 4-20 mA, 0-5 or 0-10 Vdc. The sensing range and output may be scaled to either 100, 150, 300, 400 or 500 ppm via the on-board menu.
The GS-CMA Series are carbon monoxide gas detectors. They use an electrochemical sensor to monitor the carbon monoxide level and output a field-selectable 4-20 mA, 0-5 or 0-10 Vdc. The sensing range and output may be scaled to either 100, 150, 300, 400 or 500 ppm via the on-board menu. A front panel LCD is standard to ensure easy setup and operation. It is available in either wall/surface or duct mount congurations. Other standard features include a back light for the LCD, a front panel test switch, status indication and an alarmbuzzer. The test function may also be controlled remotely with a digital input signal. The on-board menu allows local conguration of all device parameters. Optional features include one or two alarm relays and/or RS-485 network communication congured for ModBus protocol.
The GS-CMB Series are carbon monoxide gas detectors. They use an electrochemical sensor for reliability and accuracy in even the most critical applications. The standard product features a 2-wire loop-powered output. Optionally, the device may be configured with an alarm relay which operates in 3-wire sourcing mode and/or with Modbus communications.
The GS-2AQD, Indoor Air Quality Sensor usesan advanced MEMS metal oxide semiconductorsensor to detect poor air quality. The sensorreacts quickly to detect a broad range of VOCssuch as smoke, cooking odors, bio-effluence,outdoor pollutants and from human activities.
The GS-2AQD, Indoor Air Quality Sensor usesan advanced MEMS metal oxide semiconductorsensor to detect poor air quality. The sensorreacts quickly to detect a broad range of VOCssuch as smoke, cooking odors, bio-effluence,outdoor pollutants and from human activities.The sensor captures all VOC emissions thatare completely invisible to CO2 sensors. TheGS-2AQD provides a linear analog signal outputof 0-5 or 0-10 Vdc for connection to a buildingautomation system, as an analog stepped outputof 0-10 Vdc as well as an adjustable relay output.Optional temperature output is available.
The GS-2CDD Series are duct carbon dioxide gas detectors. These devices provide precision measurement of CO2 gas. These sensors use ahighly accurate and reliable Non-dispersive Infrared(NDIR) sensor combined with state-of-theartdigital linearization and temperature-compensatedcircuitry to monitor duct CO2 levels.The duct CO2 transmitter principal of operationis based on the Venturi effect of the probe thatextends into the HVAC duct. Air flowing throughthe duct is forced into the vent holes on one sideof the probe, into the enclosure, over the CO2sensor, and then the air is drawn back out of theenclosure via the vent holes on the opposite sideof the probe. Optional temperature sensor andadjustable relay output is also available.
The GS-AQDPM Duct Particulate Matter Sensoruses an optical sensor based on laser scatteringprinciples and features innovative contaminationresistance technology to perform highly accurateand reliable PM measurements.
The replaceable sensor measures particles ofPM1.0, PM2.5, PM4.0, or PM10, with a continuousoperation lifetime of more than 8 years. Thesensor will provide long-term reliability and highresolution particle size binning for the detectionof environmental dust and other particles.
The GS-SDD Series Smoke Detector are the latest innovation for early detection of smoke and products of combustion present in air moving through HVAC ducts in commercial, industrial and residential application. The GS-SDD Series, 4-wire duct housing will accommodate either the ionization sensor or the photoelectronic sensor.
The GS-2CDHTD Series are duct temperature,relative humidity and CO2 detectors. They usea highly accurate and reliable non-dispersiveinfrared (NDIR) sensor to monitor CO2, a precisionthermistor to monitor temperature and athermoset polymer-based capacitance sensor tomeasure humidity level. This is combined withstate-of-the-art digital linearization and temperaturecompensated circuitry and provides 3analog outputs.
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