EBTRON - Model HTX104-T -Airflow Measurement Device with Temperature & Alarm Capability
The HTx104-T is EBTRON’s measurement solution for round ducts between 4 and 16 inches in diameter when a remote display is desired. Ideal for small duct airflow measurement and airflow tracking applications. More output circuit protection than the EF-x2000-T with a true 4-20mA output option (HTA104-T) make this the best choice for all small duct measurement applications.
- Thermal Dispersion Technology
- Cost Effective Single Probe
- NIST-Traceable Calibration
- %-of-Reading Accuracy
- Airflow and Status Alarm
- Temperature Output Capability
- Analog and RS-485 Output Models
- Duct Insertion Mounting
- Remote Transmitter with LCD
- 3-year Warranty
- High-Performance CV/VAV Terminal Box Measurement
- Small Duct Outdoor Air Delivery Monitoring
- Small Duct Airflow Tracking
- Hospital Pressurization
- Laboratory Pressurization
- Improve Terminal Box Performance with Turndown
- Comply with ASHRAE Standards
- Satisfy LEED Prerequisites and Credits
- Provide Acceptable IAQ
- Save Energy
- Reduce Liability
- Improve Performance
- Accurate and Repeatable
- Low Airflow Capability
- Volumetric or Mass Airflow Measurement
- Long-term Stability
- “Plug and Play” Operation
- Intuitive User Interface
- Waterproof Sensor Assembly
- FEP Plenum Rated Cables
Probe and Sensor Node Configurations
1 probe x 1 sensor node/probe (4 inch [101.6 mm] probe)
1 probe x 2 sensor nodes/probe (5 to 16 inch [127.0 to 406.4 mm] probes)
Installed Airflow Accuracy¹
±3% of reading
Sensor Node Averaging Method
Airflow: Independent arithmetic average
Temperature: Independent, velocity weighted average
Listings and Compliance
UL: UL-873 and CSA C22.2 No. 24;
CE: Non-UK European shipments only
UKCA::UK shipments only
BACnet International::BTL Listed (HTN104 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 °F [-28.9 to 71.1 °C]Transmitter: -20 to 120 °F [-28.9 to 48.9 °C]Humidity: (non-condensing)
Probes: 0 to 100%
Transmitter: 5 to 95%
Sensing Node Sensors
Self-heated sensor: Precision, hermetically sealed, bead-in-glass thermistor probe
Temperature sensor: Precision, hermetically sealed, bead-in-glass thermistor probe
Sensing Node Housing
Material: Glass-filled Polypropylene (Kynar® with /SS option)
Sensor Potting Materials: Waterproof marine epoxy
Sensing Node Internal Wiring
Type: Kynar® coated copper
Airflow Measurement
Accuracy: ±3% of reading to volumetric airflow standards (includes transmitter uncertainty)
Calibrated Range: 0 to 3,000 FPM [0 to 15.24 m/s]Calibration Points: 7
Temperature Measurement
Accuracy: ±0.15 °F [0.08 °C] to NIST-traceable temperature standards (includes transmitter uncertainty)
Calibrated Range: -20 to 160 °F [-28.9 to 71.1 °C]Calibration Points: 3
Tube
Material: Gold anodized 6063 aluminum (316 stainless steel with /SS option)
Mounting Brackets
Material: 304 stainless steel
Options & Standard Size Limits2
Insertion: 6 to 191 in. [152.4 to 4851 mm]Stand-off: 6 to 190 in. [152.4 to 4826 mm]Internal: 8 to 194 in. [203.2 to 4928 mm]
Probe to Transmitter Cables
Type: FEP jacket, plenum rated CMP/CL2P, UL/cUL listed, -67 to 302 °F [-55 to 150 °C], UV tolerant
Standard Lengths: 10, 15, 20, 25, 30, 40 and 50 ft. [3.1, 4.6, 6.1, 7.6, 9.1, 12.2 and 15.2 m]Connecting Plug: 0.60” [15.24 mm] circular DIN
Power Requirement:
24 VAC (22.8 to 26.4 under load) @8V-A
PCB Connections:
Gold-plated PCB interconnects and test points
User Interface:
16-character LCD display and 4 button interface
B.A.S. Connectivity Options
HTA104 Transmitter: Two field selectable (0-5/0-10 VDC or 4-20mA), scalable and isolated analog output signals (AO1=airflow, AO2=temperature or alarm)
HTN104 Transmitter: One field selectable (BACnet MS/TP or Modbus RTU) and isolated RS-485 network connection- Individual sensor node airflow rates and temperatures are available via the network
Airflow Alarm
Type: Low and/or high user defined setpoint alarm
Tolerance: User defined % of setpoint
Delay: User defined
Zero Disable: Alarm can be disabled when the airflow rate falls below the low limit cutoff value (unoccupied periods)
Reset Method: Manual or automatic
Visual Indication: Yes, LCD display
Network Indication: Yes (HTN104 only)
Analog Signal Indication: Yes, on AO2 assignment (HTA104 only)
System Status Alarm
Type: Sensor diagnostic system trouble indication
Visual Indication: Yes, LCD display
Network Indication: Yes (HTN104 only)
Analog Signal Indication: Yes, on AO2 assignment (HTA104 only)