| ENCLOSURE | |
|---|---|
| Type | Flame Proof as per IS:2148-1981 suitable for Gr IIA & IIB area. |
| Certificate No. | CMRI/TC/H554 dated 19/12/96 issued by CMRI, Dhanbad. |
| Weather Proof | Conforming to IP-65 as per IS:2147-1962. |
| Cable Entries | 4 nos. Standard – 1/2″ NPT (F). |
| TWO WIRE TRANSMITTER | |
| Range | 8000 / 12000 / 16000 / 24000 mm |
| Output | 4 to 20 mADC |
| Input Sensor | 3 wire, precision, multi-turn wire wound potentiometer |
| Source Voltage (Vsource) | Max. 36 VDC, Min. {12 + (0.02 x Loop resistance in Ω)} VDC |
| Minimum Span | 25% of the range |
| Accuracy | ± 0.75% for measuring range below 6000 mm ± 0.50% for measuring range above 6000 mm |
| Terminals | Suitable for conductor size up to 2.5 mm² |
| LIMIT SWITCH | |
| Range (Factory Set) | 8000 / 12000 / 16000 / 24000 mm |
| Number of Switches | 2 or 4 |
| Range of Adjustment | 0-50% for LO & LO-LO 50-100% for HI & HI-HI |
| Repeatability | ± 20 mm |
| Hysteresis | For 8000/12000/16000/24000 mm ranges – 40 / 55 / 70 / 100 mm respectively |
| Contact Type and Rating | Microswitch, 5A @ 230 VAC or 2A @ 24 VDC (Resistive) |
| Contact Configuration | 1 c/o (NO, NC, POLE) per limit switch |
| The minimum distance between two setpoints should be (Hysteresis + 50) mm. | |
SBEM’s Automatic Tank Level Gauge (ATLG) Series 133 TWT with Limit Switch Assembly is a robust and integrated solution for precise tank level monitoring and control, offering both 4-20 mA current output and adjustable limit switch contacts in a single flameproof and weatherproof enclosure. Designed for global tank inventory management applications, this two-wire transmitter supports level ranges up to 24,000 mm, segmented into optimized gear train ranges for maximum accuracy. The built-in limit switch feature, available in 2 or 4-contact configurations, provides customizable setpoints for high and low-level alarms with reliable repeatability. The system allows output and alarm settings without changing the tank levels, ensuring operational ease. Certified as intrinsically safe (Ex ia IIA IIB T6), the unit is suitable for hazardous areas with required safety barriers and isolators. With advanced design, durable construction, and field-proven reliability, SBEM’s 133 TWT enhances industrial automation for sectors including oil, gas, and chemicals worldwide.
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Specification
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