0872E3 RF Modem Table Data PROM
Only for South Florida Water Management District
weather applications supported water applications supported energy applications supported gas flux and turbulence applications supported infrastructure applications supported soil applications supported


Used with the DRL-based RF System, this specialized table data PROM is programmed specifically for the South Florida Water Management District. This PROM may be ordered as a replacement item for modems that were ordered with a different PROM.

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Technical Description

0872E3 detects ice accumulation on an ultrasonic axially vibrating tube and communicates the associated frequency changes through an RS-232 or digital current loop data link.

The 0872E3 is mounted on a pole and is designed to operate continuously in an outdoor environment. The 0872E3 requires only period recalibration; no other maintenance is normally required.

The 0872E3 consists of four functional assemblies: a Main circuit card assembly (CCA), an Output Interface CCA, a Filter assembly, and a Strut and Probe assembly. The CCAs and all electrical connections are contained within the 0872E3s housing.


    • Power Requirements: 115 VAC, ±10%, 60Hz
    • Power Consumption
      Sensing Mode: 10 Watts (0.087 Amps
      De-icing Mode: 385 Watts (3.35 Amps)
    • Output Format: RS-232, or RS232 Current Loop (300 BAUD)
    • RS232 Configuration: 8 Data Bits, 1 Stop Bit, No Parity, Full Duplex, Configured as Data Terminal Equipment (DTE)
    • Output Commands: (see appropriate Section for more information)
      • Send Data: Z1
      • De-ice: Z3XX, where XX is time in seconds (maximum = 60 sec)
      • Extended Diagnostics: Z4
      • Field Calibration: F5
    • Measurement Range: 0 – 2.5 mm (0 – 0.10 inches) of Ice
    • Minimum Measurement Threshold: 0.13 mm (0.005 inches) of Ice
    • Resolution: ± 4Hz
    • Environmental Limitations:
    • Operating Temperature: -50°C to +50°C
    • Operating Humidity Limits: 74% RH @ 35°C to 100% RH @ 25° C
    • Wind: Steady - up to 55.5km (30 knots), Gust - up to 85.2km (46 knots)
    • Rain: 76.2mm (3") per hr with 55.5km (30 knots) winds
    • Freezing Rain: Ice accretion to 25.4mm (1”) with a 37km (20 knot) wind, at a rate of 12.7mm (1/2”) per hour
    • Ingress Protection: IPX4
    • Maximum Cable Length: 30 meters
    • Mating Connectors: Connector 1 (J1): PT06J-12-13S Connector 2 (J2): PT06J-12-10S 
    • Cable Type: 0872E3CBL1-L (J1): 3 conductor, 16 AWG, Super Vu-Tron III jacket 0872E3CBL2-L (J2): Multiconductor, 2- pair, 22 AWG, Shielded, Santoprene jacket
    • Weight: 5.7 Kg (12.55 lbs)
    • Dimensions:
      • Electrical Housing: 230mm by 200mm by 110mm (L x W x D)
      • Sensing Element & Heat Sink: 164mm by 173mm by 110mm (Overall L x W x D)
    • Compliant Standards: CE and TUV (C / US)

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