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133-CIU Communication Interface Unit

SBEM’s Communication Interface Unit 133 CIU is a globally recognized microprocessor-based instrument, engineered to offer real-time tank inventory monitoring for up to 64 tanks. This advanced unit interfaces with Smart Tank Data Transmitters, Servo Gauges, and Radar Gauges to provide precise measurements of tank level in millimeters and temperature in °C, along with interface level and density in the case of Servo Gauges. Designed for industrial tank farms and control rooms, the 133 CIU supports seamless two-way RS-485/RS-232C communication with IBM-compatible PC-AT systems and dot matrix printers, forming a complete Tank Inventory Management System (TIMS). Featuring a built-in keyboard, programmable alarms, leak detection, relay outputs, and current outputs, this system ensures optimal control and safety. The modular design allows easy integration and future expansion, while variants like the LPG CIU, STI, and RDU enhance flexibility. Trusted worldwide, this SBEM product meets ISO 9001 standards and is ideal for hazardous and non-hazardous environments.

  • Features
    • Real-time, on-line, indication of level in mm and temperature in C (with tank number) for up to 64 tanks
    • Input from SBEM Smart Tank Data Transmitter, Servo Gauge & Radar Guage
    • Alternative indication of alarm and diagnostic data
    • Alternative indication of interface level and density (in case of Servo Gauge)
    • Keyboard for operator interface and programming of alarms, date/time and autoprinting intervals
    • Additional keys for full operator access to Servo Gauge functions, including calibration
    • Interface with IBM compatible PC-AT and standard dot matrix printer on RS 232C serial interface to form a complete Tank Inventory Management System
    • In-built user programmable alarm annunciator for 4 level and 1 temperature alarm per tank
    • Leak alarm with programmable rate
    • Optional, programmable, open collector alarm outputs, relay contact outputs and current outputs for control action
    • Microprocessor based circuit with in-built diagnostics
  • Specification
    Specification Details
    CIRCUITRY
    Microprocessor Based
    CPU Z-80, 4 MHz
    RAM 8K Battery backed
    RTC In-built
    LEVEL AND TEMPERATURE INDICATION
    Input / Output / Command ASCII coded signal from SBEM Smart Tank Data Transmitter, Servo Gauge, and Radar Gauge on a 2-way 1/2 wire RS 485 bus
    Display – 11 digit, 1/2” high 7-segment LED to simultaneously display:
    – CU connection no. (2 digit)
    – Level in mm (5 digit)
    – Temperature in °C (4 digit)
    – Alternative indication of interface level and density (in case of Servo Gauge)
    Data Update Less than 2 seconds
    COMMUNICATION
    With STDT &/or Servo Gauge On RS 485 port, Baud rate 1200 (standard), 2400 (optional)
    With Computer On RS 232C port, Baud rate 2400 (standard), 4800 (optional)
    With Printer On RS 232C port, Baud rate 1200 (fixed)
    Note * IBM compatible PC-AT minimum
    * Dot matrix printer with serial interface card
    PROGRAMMING AND OPERATOR INTERFACE
    Keyboard In-built keyboard with 13 keys for operator interface – to select tank no., for tank data display and program alarms, date/time, auto printing time interval.
    7 additional keys provide operator full access to the Servo Gauge functions.
    ALARM ANNUNCIATION (IN-BUILT)
    Level Alarms Programmable 4 alarms per tank – LL, L, H, and HH
    Temperature Alarm Programmable 1 alarm per tank – TH
    Leak Alarm Programmable
    Alarm Indication Alarm annunciated on display – display flashes showing tank no. and alarm type.
    On acknowledgment, alarms stop flashing on the keyboard, and display returns to normal tank data display.
    Alarms are stored in non-volatile RAM.
  • Service Downloads
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