Gen 2 Wireless Soil Moisture Sensor


  • Part #:RFI-0293-2
  • Weight:8.3 oz (235.3g)
  • Dimensions:3.7" L x 2.3" W x 1.38" H
  • Availability: Inquire

Price: $507.15
Price: $694.80


Description

The GEN2 Wireless Soil Moisture Sensor measures soil moisture tension and soil temperature. It uses a resistive granular matrix element to accurately measure the soil's matric water potential (soil moisture tension). It also measures accurate soil temperatures. The sensor takes its measurements based on a user-configurable time interval or Heartbeat. On every Heartbeat, the soil moisture element takes a resistive measurement within a defined and consistent internal matrix material. The sensor also uses a temperature element on the end of the soil moisture lead to make accurate soil temperature measurements. These measurements are then sent to the gateway, making the data available in Premiere or another approved data service.


Features:

  • Reports matric potential (soil water tension) which is the best indicator of water availability in the soil.
  • Moisture Range: 0 to 240 centibar (kPa)
  • Moisture Resolution: ~0.3 centibar or kPa
  • Temperature Accuracy: +/- 1.0°C (1.8°F)
  • Temperature Resolution: 0.1°C
  • Configurable thresholds for critical condition monitoring
  • Wireless range of 2,000+ feet through 18+ walls1
  • Frequency-Hopping Spread Spectrum (FHSS)
  • Best-in-class interference immunity
  • Best-in-class power management for longer battery life2
  • Encrypt-RF Security (Diffie-Hellman Key Exchange +
  • Advanced Encryption Standard (AES)-128 Cipher
  • Block Chaining (CBC) for sensor data messages)
  • Sensor logs 2000 to 4000 readings if the gateway connection is lost (non-volatile flash, persists through power cycling):
    • 10 minute Heartbeats = ~ 22 days
    • 2 hour Heartbeats = ~ 266 days
  • Automatic over-the-air updates to sensor firmware (future-proof)
  • Premiere Basic Online Wireless Sensor Monitoring and Notification System to configure sensors, view data, and send alerts via SMS text, email, and voice call

 

1 Actual range may vary depending on the environment and gateway.

2 Battery life is determined by the sensor reporting frequency and other variables. Other power options are also available.




Technical Specifications:


 

Element Type

Resistive element with granular matrix

 

Range

0.0 to 240.0 centibar or kPa (Water Tension)

 

 

 

 

Resolution

~0.3 centibar or kPa1

Moisture

Dimensions

Diameter: 0.875 in. (22 mm)

Sensing

 

Length: 3.25 in. (83 mm)

Element

 

Materials

ABS plastic caps with stainless steel body over a hydrophilic

 

 

 

fabric covered granular matrix. (Will not dissolve in soil or be

 

 

compromised by freezing temperatures)

 

Response Time

~5 Minutes2

 

Element Type

Thermistor embedded in sealed metal bullet

Temperature

Accuracy

+/- 1.0 Celsius

Sensing

Measurement Range

-40°C to 125°C (-40°F to 257°F)

Element

 

 

Resolution

0.1° C

 

Response Time

Typically, less than 15 seconds

 

General Composition

Soil moisture and temperature leads coupled together in a

 

 

single sealed cable wrapped in a braided sleeve. Sleeve ends

 

 

fixed using adhesive lined heat shrink.

 

 

 

 

Length

63 in. (160 cm)

 

 

 

Cable Physical

Cable Sleeve Material

Polyethylene terephthalate (PET)

Specifications

Overall, Cable Operating Temperature

-40°C to 80°C (-40°F to 176°F)3,4

 

Weight

4.07 oz. (115 g)

 

 

 

 

Connector End

Keyed M8 6-pin female connector, with M8 female coupling

 

 

collar.

 

Sensor Base Connector

Keyed M8 6-pin male connector

 

 

 

 

Data logging

Sensor logs 2000 to 4000 readings if gateway connection is lost

 

 

(non-volatile flash, persists through power cycling): 10-minute

 

 

Heartbeats = ~22 days - 2-hour Heartbeats = ~266 days

GEN2

Wireless protocol

GEN2 Proprietary Frequency-Hopping Spread Spectrum (FHSS)

Wireless

 

 

Wireless transmission power (EIRP)

50 mW (900MHz), 25 mW (868 MHz), 10 mW (433 MHz)

 

 

 

 

 

Wireless range

2,000+ ft. through 18+ walls with the GEN2 XL® Gateway

 

Security

Encrypt-RF®  (256-bit key exchange and AES-128 CTR)

 

Battery voltage range

2.0 to 3.8 VDC

 

Operating altitude (non-pressurized environments)

-15.2 to 1,982 m (-50 to 6,500 ft)5

 

Storage altitude (non-pressurized environments)

-15.2 to 3,048 m (-50 to 10,000 ft)5

 

Operating humidity

5 to 85% RH (non-condensing)

General

Certifications

900 MHz sensors: FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1.

 

868 and 433 MHz sensors tested and comply with: EN 55032:

 

 

 

 

2015/A11:2020; EN 55035:2017/A11:2020; ETSI EN 300 220

 

 

V3.2.1 (2018-06); ETSI EN 301 489-3 V2.2.0. (2021-11); and

 

 

ETSI EN 303 645. All sensors tested and comply with: EN

 

 

61010-1 and EN 60950 and meet RoHS 2015/863 and REACH

 

 

224 (June 2022), according to IEC 63000:2016/AMD1:2022.

 

 

 

 

1.       The resolution increases as the centibar readings get lower. Resolution at 0 centibar is ~0.05 centibar, at  240 centibar it is ~0.36 centibar. The sensor is limited to 0.1 centibar by the sensor firmware.

2.       The response time is calculated by measuring the time it takes for the sensor to go from fully dry to saturated by placing the moisture element upright in 1" of water. Therefore, actual response times may vary.

3.       Heat shrinks adhesive melts at ~85° C. Using temperatures at or above this level may compromise the waterproofing of the cable and allow the heat shrink and sleeve to slip and become loose.

4.       The soil moisture element will not work properly while frozen, but the sensor readings will return to normal when thawed.

5.       Operating and storage altitude without DC power supply is  -30.48 to 9144 m (-100 to 30000 ft).




Battery

1x 3.6V AA Lithium Thionyl Chloride, 1500mAh, pre-installed

 

 

Battery Life

10+ years expected

 

 

Operating temperature range1

-25°C to 80°C (-13°F to 176°F)

Wireless antenna type

1/2-wave waterproof dipole with RP-SMA connector and swivel

 

neck; dBi of 3.0 (900/868MHz) or 2.5 (433 MHz); length of 8.27"

 

(210mm) (900/868MHz) or 7.68" (195mm) (433 MHz); diameter

 

at thickest point of 0.55" (14mm)

 

 

Weight

8.3 ounces (235.3g) (senor body and lead)

 

 

Enclosure rating

NEMA 1, 2, 4, 4x, 12, and 13 rated, sealed, and weatherproof

 

 

UL rating

UL Listed to UL508-4x specifications (File E194432)

 

 

 

























1.       Operating below 0°C (32°F) degrees will reduce battery life.