TANK LEVEL GAUGE TLG20D For Water / Foam Tanks Operating Principle Wiring and Application Diagram The pressure gauge is designed to display a liquid’s volume to 5% tank level accuracy with a 7 segment ultra-bright LED display. When the tank level is below 25% the display ashes and when the tank level is below 10% the relay output is turned on (optional).The indicator is able to communicate with other displays (remote indicators) over the one wire datalink. The unit uses a 0-400/600 mbar (0-5.8 PSI) temperature compensated pressure transducer to obtain tank level information. The transducer measures the column of liquid in the tank above the opening of the elbow and provides a signal that is proportional to the volume. The complete measuring equipment TLG20D consists of the: • indicator IN20D which displays the level of the liquid, • suitable pressure transducer PT04, • the 3-wire sensor cable with the connector plug. Specication Power supply Power consumption* Alarm relay output Pressure range Level indication 10 V ... 30 V DC approx. 3 W Power supply voltage, max.6 A 0...400/600 mbar (0...4/6 m tank heightI) 3 x 7 seg. LED displays (super bright), 0 - 100%, 5% step Detectable substances Water, Fire-smothering foam, Oil, Gasoline,... Transducer Electrical Connection M12x1 Transducer pressure port tting G 1/4” wit adapter G1/2” Transducer Housing Stainless steel Enclosure protection ( IEC 529) IP65 (Transducer); IP65 (Indicator-front panel) Operating temperature-indicator from -45 °C to +85 °C Dimensions of the indicator (IEC 61554) 72 x 36 x 85 mm Transducer cable 3 x 0,25/35 mm2 (chemical and oil resistant) + connector M12 Weight Transducer: 0,1 kg, Indicator: 0,1 kg * No outputs active 02 03

• Accurately and reliably measures the water or foam level in a fire truck • The liquid levels are indicated by the 3 digit ultra-brigh t LED display and are easily readable in thedark, from the distance or even in direct sunlight • Water and Foam displays available • Alarm relay output (6A) when the level is below 10% • Auto-fill and refill function (Hysteresis) • High Current MosFET outputs for large external light (Large Light Driver) - • Remote indicator which can be connected via 1-wire datalink • Requires minimal maintenance • Pressure transducer made from stainless steel, suitable for...