HOBOnet Pulse Input - Contact Closure Sensor
Overview
The HOBOnet Wireless Pulse Input Sensor connects to sensors with pulse output. This sensor is compatible with contact closures, such as tipping-bucket rain gauges or reed switches. HOBOnet Wireless Sensors communicate data directly to the HOBO RX3000 or the HOBO MicroRX station, or pass data through other wireless sensors back to the central station. They are preconfigured and ready to deploy, and data is accessed through HOBOlink, Onset’s innovative cloud-based software platform.
Manufactured by: Onset
Model: HOBOnet Pulse Input - Contact Closure Sensor
Services offered for this product
- Sales
- Rental
- Installation
- Calibration
- Maintenance
- IoT Cloud Compatible
Applications
Pulse input
Specification
| Sensor | RXW-UCD-xxx For Contact Closures |
| Measurement Input Frequency | 2 Hz (2 pulses per second) |
| Measurement Range | 0-65,533 pulses per logging interval |
| Resolution | 1 pulse |
| Lockout Time | 327 µs ±10% |
| Recommended Input Type | Mechanical contact closure (example: reed switch in a tipping-bucket rain gauge) |
| Preferred Switch State* | Normally open |
| Edge Detection | Falling edge, Schmitt Trigger buffer (logic levels: low =2.7 V) |
| Minimum Pulse Width | 1 ms |
| Input/Output Impedance | 100 K? |
| Open Circuit Input Voltage | 3.3 V |
| Maximum Input Voltage | 3.6 V |
| User Connection | 24 AWG wires, 2 leads: white(+), black(-) |
| Wireless Mote | |
| Operating Temperature Range | -25° to 60°C (-13° to 140°F) with rechargeable batteries -40 to 70°C (-40 to 158°F) with lithium batteries |
| Radio Power | 12.6 mW (+11 dBm) non-adjustable |
| Transmission Range | Reliable connection to 457.2 m (1,500 ft) line of sight at 1.8 m (6 ft) high Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high |
| Wireless Data Standard | IEEE 802.15.4 |
| Radio Operating Frequencies | RXW-UCC-900 and RXW-UCD-900: 904-924 MHz RXW-UCC-868 and RXW-UCD-868: 866.5 MHz RXW-UCC-921 and RXW-UCD-921: 921 MHz RXW-UCC-922 and RXW-UCD-922: 916-924 MHz |
| Modulation Employed | OQPSK (Offset Quadrature Phase Shift Keying) |
| Data Rate | Up to 250 kbps, non-adjustable |
| Duty Cycle | <1% |
| Maximum Number of Motes | Up to 50 wireless sensors or 336 data channels per one HOBO RX station |
| Logging Rate | 1 minute to 18 hours |
| Number of Channels | 2 |
| Battery Type/ Power Source |
Two AA 1.2 V rechargeable NiMH batteries powered by built-in solar panel or two AA 1.5 V lithium batteries for operating conditions of -40 to 70°C (-40 to 158°F) |
| Battery Life | With NiMH batteries: Typical 3-5 years when operated in the temperature range -20° to 40°C (-4°F to 104°F) and positioned toward the sun (see Deployment and Mounting), operation outside this range will reduce the battery service life With lithium batteries: 1 year, typical use |
| Memory | 16 MB |
| Dimensions | Cable length: 6.5 m (21.3 ft.) Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches) |
| Weight | Cable: 250 g (9 oz) Mote: 223 g (7.87 oz) |
| Materials | Mote: PCPBT, silicone rubber seal |
| Environmental Rating | Mote: IP67, NEMA 6 |