HCV-ST Column level indicators with MAX temperature electrical sensor
Description
Main specifications
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.
Screws, nuts and washers
Zinc-plated steel.
Packing rings
Step-shaped for the seal on the reservoir walls and NBR synthetic rubber O-ring under screw head.
Suggested roughness of the packing ring application surface Ra = 3 µm.
Sensor bracket
Watertight in glass-fibre reinforced polyamide based (PA) technopolymer, black colour, with MAX temperature sensor (80°C).
For a correct assembly see Warnings.
Swivelling connector
With built-in cable gland and contact holder. Front or axial output (high or low) ensuring protection against water sprays (protection class IP 65 according to table EN 60529 table).
Contrast screen
White lacquered aluminium. The housing, in the appropriate external rear slot, guarantees the best protection from direct contact with fluid.
It can be taken out from the inclined side, before assembly to allow the insertion of level lines or words.
Standard executions
- HCV-ST-NO: with electric contact normally open (NO).
- HCV-ST-NC: with electric contact normally closed (NC).
Maximum continuous working temperature
90°C (with oil).
General information
Features and performances
In addition to the visual control, HCV-ST column level indicator, generates an electric signal when the temperature reaches the pre-set degrees (80°C).
Ultrasound welding to guarantee a perfect seal.
Maximum fluid level visibility even from side positions.
Lens effect for a better visibility of the fluid level.
Technical data
In laboratory tests carried out with mineral oil type CB68 (according to ISO 3498) at 23°C for a limited period of time, the weld stood up to: 18 bar (HCV.127) 12 bar (HCV.254).
For use with other fluids and under different pressure and temperature conditions, please contact ELESA Technical Department.
In any case we suggest to verify the suitability of the product under the actual working conditions.
Electrical features
Functioning of the MAX temperature sensor
- HCV-ST-NO: the electrical contact closes when the pre-set temperature is reached at 80°C.
- HCV-ST-NC: the electrical contact opens when the pre-set temperature at 80°C is reached.
| Electrical features | MAX temperature sensor | |
| Tension feed | AC/DC | |
| Electric contacts | NO normally open NC normally closed | |
| Voltage / Maximum current | 250 Vac - 2 A | (resisteve loads) |
| 115 Vac- 3A | ||
| 24 Vdc - 3 A | ||
| 12 Vdc - 4 A | ||
| Minimum current | 50 mA | |
| Cable gland | Pg 7 (for cables in sheath with Ø 6 or 7 mm) | |
| Conductors cross-section | Max. 1.5 mm2 | |
Other executions
Special executions on request
- Level indicators with stainless steel screws, nuts and washers.
- Level indicators for use with fluids containing alcohol.
- UV resistant transparent technopolymer level indicators.
- MAX temperature electrical sensor with trigger threshold at 70°C or 90°C.
Instructions of use
Connector assembly instructions
- Remove the connector from the indicator by unscrewing the set screw placed on the connector, take the contact holders out and loosen the cable gland.
- Slip on the cable into the connector (standard connector) and connect the wires to the terminals 3 and earth of the contact holder.
- Assemble by pressing the contact holder into the connector in the required position.
- Screw the connectors to the indicator and then tighten the cable glands.
HCV-ST
