R151 Tethered Temperature Sensor
The R151 Tethered Temperature Sensor is a battery-powered RF transmitter that monitors and reports the temperature observed by a digital thermometer that is embedded at the end of a 6-foot wire (tether). This modular design provides physical separation between the RF transmitter (tag) and the sealed temperature sensor itself; this allows the tethered sensor to be installed in harsh environments (particularly in applications where use of the R150 Temperature Tag is not practical, such as potentially wet conditions or inside freezers).
The RF transmitter will periodically report its own unique ID, along with the ambient temperature observed by the sensor (updated every 20 seconds). The R151 sensor is designed for use in a variety of challenging environmental monitoring applications. This form factor is particularly well-suited for environments where the RF transmitter (tag) module is mounted in open space while the temperature sensor is installed inside RF-blocking enclosures such as a metal ductwork or refrigerators. Mounting is easy and flexible; the tethered sensor can be routed into difficult to reach places, such as above a suspended ceiling or inside HVAC air ducts.
The RF transmitter (tag) comes in a polycarbonate enclosure with a strong industrial adhesive on the back of the enclosure. It can be securely mounted using adhesive, mechanical fasteners (screws) or zip ties. The digital thermometer (sensor) is sealed at the end of plenum-rate cable that can be detached from the RF transmitter (tag) during the installation process and then re-attached via screw-terminal block.
Features
-
Accurate temperature monitoring within 2° F from 14° F to 185° F
-
Continues reporting temperature down to -67° F and up to 212° F (+/- 4° F typical)
-
Tethered temperature sensor can be installed inside a metal enclosure or submerged in liquid
-
Removable and re-attachable sensor cable
-
Industrial-strength adhesive mounting and flexible mounting options
-
Sensor and cable design suitable for plenum spaces
-
Monitor harsh environments (e.g., temperature/humidity extremes, condensation)
-
Encoded radio transmissions at 433 MHz
-
Works with all RF Code fixed and mobile readers
Benefits
-
Real-time temperature monitoring for challenging environments
-
Leverages customers’ existing active RFID infrastructure
-
Ideal for high density environments, such as inside the data center
Operation | |
| Operating Frequency |
433.92 MHz |
| Unique Tag ID Codes | > 540,000 unique IDs per Group Code |
| Typical Transmission Range |
> 30 ft. in the data center and up to 300 ft open field |
| Radiated Emissions | 71.8 dBuV/m at 3 meters (maximum) |
| Modulation | ASK |
| Stability | Saw Stabilized |
Enclosure: RF Transmitter (Tag) | |
| Width | 2.53 in (64.3 mm); 3.50 in (88.9 mm) including mounting wings |
| Depth | 2.53 in (64.3 mm) |
| Height | 1.03 in (26.2 mm) |
| Case Weight | 2.61 oz (74 g) |
| Construction |
Polycarbonate |
| Durability |
Tough, impact resistant and temperature stable |
| Mounting Options |
Mechanical screws (2 places) or adhesive pads |
Digital Thermometer Sensor Tether | |
| Sensor Width |
0.38 in (9.7 mm) |
| Depth | 0.84 in (21.3 mm) |
| Height | 0.30 in (7.6 mm) |
| Tether Construction | 0.15 in (3.8 mm) diameter plenum-rated cable |
| Tether Length |
72 in (1829 mm) = 6 ft (1.83 m) |
Environmental: RF Transmitter (Tag) | |
| Operating Temperature* |
-20° C to +70° C (-4° F to +158° F) * |
| Storage Temperature |
-40° C to +80° C (-40° F to +176° F) * |
Environmental: Digital Temperature Tether | |
| Operating Temperature Range (+/- 4° F typical) |
-55° C to +100° C (-67° F to +212° F) |
| Accurate Temperature Range (+/- 2° F) | -10° C to +85° C (14° F to +185° F) |
| Liquid Durability | Suitable for condensing environments |
Power | |
| Battery Type |
Three (3) Lithium CR2032 replaceable coin cells |
| Smart Tag Feature | Low battery indication |
| Battery Life* | 5 years |
|
* The R151 RF Transmitter (Tag) will continue to operate over the Operating Temperature range and withstand periods of time subjected to the Storage Temperature limits, however the battery life is optimized at 5 years for normal use in temperature-controlled environments between 50° F and 130° F. If the RF Transmitter (Tag) module is subject to prolonged exposure or use under extreme temperature conditions, this will decrease the useful life of the batteries. The RF Transmitter (Tag) module should be protected from condensing environments; condensation can cause the mechanical wiring / connector to become unreliable. Exposing the RF Transmitter (Tag) to liquids may cause the product to malfunction, or permanently damage the circuitry, and voids the product warranty. | |
