Technical information

Common features:  
Typical measuring range in [mm] below the top edge of the copper mold plate: slab min. 100 × 600 mm or bloom min. 260 × 350 mm 20 to 160 mm
bloom min. 180 × 180 mm 20 to 100 mm
Nominal range in [mm] recommended for the automatic mold level control: slab min. 100 × 600 mm or blok min. 260 × 350 mm 60 to 100 mm
bloom min. 180 × 180 mm 40 to 70 mm
Minimum mold level that can be approximately indicated (for auto-start purposes only): slab min. 100 × 600 mm or bloom min. 260 × 350 mm 220 mm
bloom min. 180 × 180 mm 120 mm
Digital setting-up of the slope, example: 4 mA = 160 mm, 20 mA = 0 mm
Linearity: ±3 % of measuring range
Long-term stability of global level measurement = very slow drift of output signal in 8 hours at the mold level of 80 mm: ±5 mm
Measurement accuracy = Short-time fluctuation of an output signal: < ±1 % of the measuring range for mold level of 80 mm
Resolution: 0,2 mm
Response time: Adjustable 0,1 s to 2,5 s
Influence of temperature: comprised in a long-term stability
Influence of mold oscillations:
(the phase shift variation of input impulses must be less than 2°)		 < 20 % of the mold stroke at oscillations frequency 0,4 to 10 Hz

 

Data of slab sensor SH7‑S10 and bloom sensor SH7‑B, SH7‑R or SH8‑U:

Minimum mold size: slab 100 × 600 mm
bloom 180 × 180 mm
Storing temperature for the sensor: 0 °C to 60 °C
Ambient temperature for sensor cable/connector/protective hydraulic hose: max. 180/125/100 °C
Sensor cable length: max. 10 m, option: sensor cable split into sensor cable and intermediate cable which are coupled by an intermediate connector placed on the mold or in its vicinity
Dimensions and mass (cable included) and sensor cover: slab sensor SH7‑S10 63 × 150 × 540 mm, approx 30 kg
slab sensor cover 83,5 × 100,5 × 590 mm, 19 kg
universal sensor SH8‑U 63 × 150 × 420 mm, 16 kg (1 piece)
Dimensions and mass of frame shaped bloom sensors SH7‑B or SH7‑R depend on the bloom size
Relative humidity: 100 %
Cooling: water, 20 to 25 l.min-1, 10 to 40 °C, max. input pressure 5 bar, metallic particles < 0,5 mg.l-1

 

Preamplifier SH‑P, 3SHP:

Power supply: from evaluation unit
Dimensions: preamplifier is situated in a junction box 300 × 300 × 150 mm
Mass: approx 8 kg
Protection: IP 55
Ambient temperature: 0 to 60 °C (−25 až 60 °C on request)
Relative humidity: up to 90 %

 

Evaluation unit SH‑E, 3SH‑E (i.e. one-signal evaluation unit, three-signal evaluation unit):

Power supply: 1/N/PE AC100 to 230 V, 50 or 60 Hz, 150 VA
Protection: Fuse F 2A/L 250V, inside fuse F3, 15 A/H
Dimensions: rack 19”, height 132 mm, depth 355 mm
Mass: 10 kg
Protection type: IP 20
Ambient temperature: 0 to 40 °C
Relative humidit: 80 %/20 °C
Digital serial line interface (now available for evaluation unit SH‑E only): Profibus DP via interface module UNIGATE SC

 

Analog outputs: Electrically isolated signal 0 or 4 to 20 mA/max. 500 Ω):

 SH‑E: 1) Global mold level
2) Global mold level identical with signal 1) or sensor temperature (option)
   
3SH‑E: 1), 2) Global mold level or sensor temperature – see SH‑E
3) Local level next to the right sensing coil
4) Local level next to the left sensing coil (common minus terminal with signal 3)

 

Digital Inputs:

DI1 Autoset required
DI2, DI3 Reserve (optional: slab thickness setting, setting of parameters for different ferromagnetic platings of mold).
DI4 Mold Oscillations

Digital Outputs:

D01 Level < min.
D02 Level > max.
D03 Oscillation rejection
D04 Warning
D05 Detector failure
D06 Reserve
D07 Sensor connected
D08 AUTOSET ended