Material
Transparent polyamide based (PA-T) technopolymer. Highly resistant to shocks, solvents, oils with additives, aliphatic and aromatic hydrocarbons, petrol, naphtha, phosphoric esters. Avoid contact with alcohol or detergents containing alcohol.
Screw, nuts and washers
Zinc-plated steel.
Packing rings
NBR synthetic rubber O-Ring.
Float
Polyamide based (PA) expanded technopolymer, black colour, with a built-in magnetic element to activate the electric contact when the oil level drops to a minimum; alarm threshold located at about 1.97 (50 mm) from the centre of the lower nut (in presence of mineral oil type CB68, according to ISO 3498, at 73°F-23°C).
Sensor bracket
Watertight in polyamide based (PA) technopolymer, black colour, with a built-in relay (reed) with two conductors wired to the two-pin connector. Two executions available:
- HCX/E+ST-N.A.: with electrical contact normally open.
- HCX/E+ST-N.C.: with electrical contact normally closed.
MAX temperature electrical sensor (175°F-80°C)
Zinc-plated screw with built-in sensor. Two executions available:
- HCX/E+ST-N.A.: with electrical contact normally open.
- HCX/E+ST-N.C.: with electrical contact normally closed.
Pre-set temperature for both executions is 175°F (80°C).
Swivelling two-pin connectors
With built-in cable glands and contact holders. Front or side output (right or left) including protection against water sprays (protection class IP 65 according to
IEC 529 table) that can be increased during installation with the necessary adjustments. Flat NBR synthetic rubber packing rings.
Contrast screen
White lacquered aluminium. The housing, in the appropriate external rear slot, guarantees the best protection from direct contact with fluid, avoiding yellowing effect due to the prolonged action of the fluid at high temperatures.
It can be removed before installation to fit marks and words (for example MAX-MIN).
Assembly
- When nuts can be fitted from the inside of the reservoir, by means of the supplied set screws and nuts.
- When nuts cannot be fitted from the inside of the reservoir and the walls are thick enough, by means of the supplied set screws, without nuts, by tapping the two holes in the reservoir walls.
- When nuts cannot be fitted from the inside of the reservoir and the walls are not thick enough, by means of the supplied set screws and the
Fast Mounting Kit.
To ensure the best sealing of the O-rings it is recommended to apply the maximum torque on the nuts as reported in the table and a roughness of the gasket application surface Ra = 3 µm.
Maximum continuous working temperature
190°F (90°C) (with oil).
Special executions on request (For sufficient quantities)
- Level indicators for use with fluids containing alcohol.
- Temperature electrical sensor with pre-set temperatures different from 175°F (80°C).
Features and performances
This column level indicator generates two electric signals: one when the oil goes down to the minimum level allowed and the other one when the temperature reaches the pre-set degrees (175°F-80°C).
Assembled using ultrasound welding to guarantee a perfect seal. Entirely in transparent material: maximum fluid level visibility even from side positions.
Technical data
In laboratory tests carried out with mineral oil for hydraulic systems type CB68 (according to ISO 3498) with gradually increasing pressure, at 73°F (23°C), the weld stood up to 18 bar.
In any case we suggest to verify the suitability of the product under the actual working conditions. If you need to use the indicator with other oils or fluids and under different pressure and temperature conditions, please contact ELESA Technical Department or carry out tests in order to guarantee a proper use.
Functioning of the electrical sensors
Execution HCX/E+ST-N.A. with electrical contacts normally open.
- MIN level electrical sensor: the electrical circuit is closed when the minimum level is reached.
- MAX temperature electrical sensor: the electrical circuit is closed when the pre-set temperature at 175°F (80°C) is reached.
Execution HCX/E+ST-N.C. with electrical contacts normally closed.
- MIN level electrical sensor: the electrical circuit is open when the minimum level is reached.
- MAX temperature electrical sensor: the electrical circuit is open when the pre-set temperature at 175°F (80°C) is reached.
Two-pin connectors assembly instructions
1. Remove the connectors from the indicator by unscrewing the set screw placed in the bottom, take the contact holders out and loosen the cable glands.
2. Slip on the two-pole cable into the connectors (standard connectors) and connect the wires to the terminals nr. 1 and nr. 2 of the relative contact holders.
3. Assemble by pressing the contact holders into the realtive connectors in the required position.
4. Screw the connectors to the indicator and then tighten the cable glands.