Meiyo osjetnici
Osjetnici temperature i tlaka za alarmni sustav
Finished plan for the engine-room monitoring sensors: Pt100 thermo-resistance bulbs with measuring point list, 4–20 mA pressure transmitters with test pieces and gauge valves, Danfoss KPS thermostats and RT pressure switches. It includes specifications, maintenance and inspection intervals for the bulbs, zero and span adjustment of the transmitters, and setting of the thermostats (range and differential).
Kliknite dio na modelu da vidite njegov broj i namjenu.Otvori 3D priručnik
Postupci održavanja
Pressure transmitter zero and span
- Power the transmitter for 20 minutes. str. 35
- Disconnect it from the pipe so it sees no pressure; output should be 4 mA ±1 % F.S.; if not, remove the blind screw and adjust ZERO. str. 35
- Reconnect, apply maximum range pressure, output should be 20 mA; adjust SPAN if needed. str. 35
- Repeat zero and span until both are correct. str. 35
Setting a KPS thermostat
- Loosen the locking screw between the spindles. str. 38
- Set the upper (function) temperature on the range spindle and the differential on the differential spindle, e.g. 95 °C with 5 °C differential for a cooling water alarm. str. 38
- Retighten the locking screw; fit the sensor in its pocket with heat-conductive compound. str. 38
Intervali održavanja
| Stavka | Kada | Radnja | Priručnik |
|---|---|---|---|
| Resistance bulbs — mechanical | 1 month after install, then 6 months | Inspect | str. 23 |
| Resistance bulbs — electrical and cleaning | 1 month after install, then yearly | Check insulation and clean | str. 23 |
Tehničke specifikacije
| Resistance bulb | Pt100, class B (DIN/IEC), tolerance ±(0.3 + 0.005 t) °C, 5 mA | str. 2 |
|---|---|---|
| Insulation | ≥ 10 MΩ at DC 500 V at normal temperature | str. 2 |
| Pressure transmitters | DC 24 V supply, 4–20 mA output, ranges 0–4.0 / 1.6 / 1.0 / 0.6 MPa, −0.1–0.4 MPa | str. 3 |
| Transmitter accuracy check | 4 mA at no pressure, 20 mA at full scale, ±1 % F.S. | str. 35 |
| KPS thermostat contacts | AC 10 A ohmic / 6 A inductive at 440 V, IP67, −40…+70 °C ambient | str. 38 |
Izvor: priručnik proizvođača „EM-38 THERMO RESISTANCE BULB-TRANSMITTER-THERMOSTAT-PRESSURE SWITCH”, 63 str. Brojevi stranica odnose se na izvornik. Prije rada provjerite priručnik na brodu.
Stranica je automatski prevedena. Brojevi dijelova, kôdovi i stranice su kao u izvorniku.