BACnet and Modbus available only on HTB116, HTC116, HTM116, and HTS116.
BACnet is a registered trademark of ASHRAE. ASHRAE does not endorse, approve or test products for compliance with ASHRAE standards. Compliance of listed products to the requirements of ASHRAE Standard 135 is the responsibility of BACnet International. The BTL logo is a registered trademark of BACnet International.
The HTx116-B is a unique multi-node bidirectional bleed airflow measurement device designed to detect airflow direction and extremely low pressure differentials (as low as 0.0002 in. H₂O) between adjacent spaces by sensing the airflow induced by the pressure gradient. Supporting up to four bidirectional bleed sensor nodes from a single transmitter, the HTx116-B can determine airflow through fixed openings when a reference airflow rate is available. Integrated temperature measurement, configurable analog outputs, BACnet® and Modbus® communication options provide a flexible solution for monitoring multiple critical airflow locations.
Probe and Sensor Node Configurations (max)
4 bi-directional, dual 1/2” NPT female bleed sensor housing
Installed Airflow Accuracy
Airflow through an opening or across an obstruction: Requires field measurement of a reference airflow of the specific installation. The Field Adjust Wizard (FAW) facilitates setup.
Equivalent pressure between two adjacent spaces: Requires field measurement of a reference pressure to correct the default flow coefficient of the specific installation. The Field Adjust Wizard (FAW) facilitates setup.
Listings and Compliance
UL: 60730-1 and CAN/CSA-E60730-1
BACnet International: BTL Listed (HTB116, HTM116, HTC116, and HTS116 transmitter).
FCC: This device complies with Part 15 of the FCC rules.
RoHS: This device is RoHS2 compliant.
Environmental Limits
Temperature:
Probes: -20 to 160 ⁰F [-28.9 to 71.1 ⁰C]
Transmitter: -20 to 120 ⁰F [-28.9 to 48.9 C]
Humidity: (non-condensing)
Probes: 0 to 100%
Transmitter: 5 to 95%
Sensing Node Sensors
Self-heated sensor: Two precision, hermetically sealed, bead-in-glass thermistor probes
Temperature sensor: One precision, hermetically sealed, bead-in-glass thermistor probe
Sensing Node Housing
Material: Glass-filled Polypropylene
Sensor Potting Materials: Waterproof marine epoxy
Airflow Measurement
Accuracy: ±2% of reading to NIST-traceable airflow standards (includes transmitter uncertainty)
Calibrated Range: -3,000 to 3,000 fpm [-15.24 to 15.24 m/s]
Calibration Points: 9
Temperature Measurement
Accuracy: ±0.15 ⁰F [0.08 ⁰C] to NIST-traceable temperature standards (includes transmitter uncertainty)
Calibrated Range: -20 to 160 ⁰F [-28.9 to 71.1 ⁰C]
Calibration Points: 3
Probe to Transmitter Cables
Type: FEP jacket, plenum rated CMP/CL2P, UL/cUL listed, -67 to 302 ⁰F [-55 to 150 ⁰C], UV tolerant
Standard Lengths: 10, 25 and 50 ft. [3.1, 7.6 and 15.2 m]
Connecting Plug: 0.60” [15.24 mm] nominal diameter
Power Requirement
24 VAC (22.8 to 26.4 under load) @16V-A max
PCB Connections: Gold-plated PCB interconnects and test points
User Interface: 2 line x16-character backlit LCD and 4 button interface
B.A.S. Connectivity Options
All Transmitters: Two field selectable (0-5/0-10 VDC or 4-20mA), scalable and isolated analog output signals (AO1=airflow or equivalent ∆P, AO2=temperature or alarm).
HTA116 Transmitter: No additional connectivity to B.A.S.
HTC116 Transmitter1: One additional field selectable (BACnet MS/TP or Modbus RTU) and isolated RS-485 network
HTB116 Transmitter1: One additional isolated RS-485 and one additional isolated Ethernet network connections field configurable as follows:
HTM116 Transmitter1: One additional isolated Ethernet network connection field configurable as follows:
HTS116 Transmitter1: Two additional isolated Ethernet network connections field configurable as follows:
Note: B.A.S. network connections can simultaneously support BACnet IP or BACnet Ethernet, Modbus TCP, and TCP/IP.
HTU116 Transmitter: One additional USB connection for thumb drive data-logging of sensor node airflow rates and temperatures
Alarms
Airflow (or Pressure): Low and/or high user-defined setpoint alarm
System Status: Sensor diagnostic system trouble indication
EB-Link Bluetooth® low energy Interface for Android®: Available for firmware updates if required.2
1 Individual sensor node airflow rates and temperatures are available via the network
2 Order with the /NR option when RF devices are not permitted.
