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          • 131 T
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          • Calibration Chamber
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          • 103 HPT
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  • 133 STDT

133 STDT

SBEM’s Automatic Tank Level Gauge 133 STDT (Smart Tank Data Transmitter) is a robust, microprocessor-based device engineered for accurate digital conversion and transmitting product level and temperature data in large industrial storage tanks. Designed to integrate with SBEM’s float and tape-type ATLG or retrofit with other makes using suitable adaptors, the 133 STDT ensures precision measurement with ±1 mm level and ±0.2°C temperature accuracy. It utilizes spot or multi-point Pt-100 temperature sensors and transmits data via a two-wire RS485 bus, allowing up to 16 transmitters on a single cable. This intelligent transmitter features RS-232C output for tank side indicators and is housed in a flameproof enclosure with intrinsically safe terminals. The built-in diagnostics and self-checking microcontroller ensure reliable field performance, while optional displays provide sequential readings of level, temperature, and alarm status. Ideal for global tank inventory management systems, the 133 STDT ensures secure, centralized data access and reduced cabling infrastructure.

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  • Features
    • Precise level and temperature transmission
    • Automatic selection of temperature points / element for average temperature measurement
    • Two-way, two-wire, digital transmission on RS 485 bus. allows looping of 16 transmitters, reduces cabling
    • Level and temperature transmission on a common signal cable
    • RS 232C output for Tank Side Indicator
    • Flameproof housing and intrinsically safe terminals for temperature sensor
    • Local (field) level, temperature and alarm status indication
    • Microprocessor based, intelligent circuitry with self-diagnostics
  • Specification
    CIRCUITRY
    Type Microprocessor based
    CPU Microcontroller 80C31, 8MHz
    RAM 2K
    LEVEL MEASUREMENT AND TRANSMISSION
    Range 0-19999 mm
    Accuracy ± 1 mm *
    Input From sprocket shaft of SBEM or any other make of tank level gauge
    Conversion Through optical encoder
    * This error is due to mechanical coupling between transmitter and level gauge. Transmission error is zero.
    TEMPERATURE MEASUREMENT AND TRANSMISSION (OPTIONAL)
    Range -100.0 to +100.0°C
    Accuracy ± 0.2°C
    Resolution ± 0.1°C
    Sensor Type Pt-100 Spot / Averaging (Multi-point), Maximum 14 points, Selection through solid-state electronic multiplexer
    DATA TRANSMISSION, DISPLAY AND DIAGNOSTICS
    Communication 2 Way / 2 wire RS 485 ASCII coded Interface Unit
    Tank Side Serial RS 232C Indicator
    Baud Rate 1200 (standard), 2400 (optional)
    Data Protection Longitudinal and vertical parity check
    Inbuilt Display (Optional) 4 ½ digit, ½” high, 7-segment LCD to display sequentially:
    – Level in mm
    – Temperature in °C
    – Alarm status and diagnostics
    Diagnostics In-built
    POWER SUPPLY
    Voltage 110 VAC, ±10%, 50 Hz, 1 mains isolated, 4 VA
  • Service Downloads
    Leaflets:
    • 133 STDT Download

    Contact

    • 8600042374 | 7720065260
    • sales@sbem.co.in
    • Gat No. 326, Shriramnagar, Gaud Dara Road, Khedshivapur, Pune - 412205.

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