The HSH Tankguard 831 has been designed for centralized display of cargo conditions, e.g. pressure/level/temperature in cargo tanks on vessels. The Tankguard 831 (TG831) is also equipped with hardware and software to monitor the HSH FTLG 806 & 807. The transmission circuit between level gauge and remote level indicator is intrinsically safe as well as fail-safe: it is continuously monitored and in case of a failure that would result in an erroneous level indication.
TankGuard 831
TankGuard 831
Additionally, input & output signals are provided for communications with remote data acquisition systems and/or analog or digital sensors, e.g. 4-20 mA and HART communication are supported, Modbus RS232 or RS485 and Modbus over TCPIP can be used for communications with AIS. The actual /average or voyage level is displayed by means of a digital LCD display. Depending on the settings the level can be displayed in “ullage” or “innage” mode with increments of 1 mm. “Innage” read out is most common (“zero” level at tank bottom).
The remote level indicators are designed for flush panel-mounting and can easily be incorporated in (cargo) control panels. As the indicators are solid state (no moving parts), no periodical maintenance is required.
Specfications
Dimensions
Panel cut-out: 138 x 89 mm
Font dimensions: 146 x 100 mm
Depth behind panel: 60 mm
Weight: approx. 850 g
Max. ambient temperature: + 70 °C
Min. ambient temperature: – 25°C
Performance
Measuring range: 0 – 99999 mm
Measuring speed: max. 1000 mm/sec
Accuracy: ± 1 mm
Power consumption: 1.3 Watt nom. / 4.2 Watt max.
Parallel output: 5 characters BCD TTL
Measuring range: 0 – 65535 mm
Accuracy: ± 1 mm
Analog Output
Measuring range: 0 – 8000 mm / 16000 mm / 32000 mm
Accuracy: ± 0,04% of max. measuring range
Resolution: 16 bits
Level alarm outputs
Measuring range: 0 – 65535 mm
Accuracy: ± 1 mm
Max. contact rating: 1 A # 24 VDC / 0.5 A # 120 VAC 24 W /60 VA
Electrical
Transmission circuit Ex II (1) G [EEx ia] IIC
C max. (cabling): 460 nF
R max. (cabling): 150 Ohm / core
L max.: 0.8 mH
Power input: 12 V DC max.
Max. power consumption: 3 A max. per indicator (fully featured)
Options
Serial output: RS232 / RS485
Measuring range: 0 – 65535 mm
Accuracy: ± 1 mm
Min. update speed: 0.1 s
Baud rates: 9600 Baud
Format: 1 startbit / 8 databits / 1 stopbit
Software feature
Pre-setup – For accurate calibration of 4-20 mA signals
Extensive FTLG monitoring, predictive maintenance
Extended Log – A log is constantly logging all actions that can be monitored, e.g. times reference switch activated, occurred errors & alarms, total traveled distance.
Web-interface, for upgrade, serviceability and download of log
Settable alarms for all inputs
Full control of LCD brightness and contrast
PIN code security for important/advanced settings
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