Terminal operations managers, tank farm automation engineers, custody transfer & compliance officers, and EPCs need ultra-accurate custody transfer measurement, safe and easy calibration in hazardous environments, seamless system integration, and regulatory compliance in hazardous environments. For them, the MCG 1500SFI servo gauge offers up to ±0.4 mm accuracy, density and BS&W measurement, explosion-proof safety. It also supports ground-level calibration, and multiple communications protocols.
Unlike conventional servo gauges that demand tank-top access and frequent maintenance, the MCG 1500SFI combines ±0.4 mm precision, infrared ground-level calibration, field-upgradeable electronics, and multi-protocol compatibility in a compact, explosion-proof design. Its brushless motor and minimal moving parts ensure long-term reliability in the most demanding custody, process, and storage environments.
Designed for both new installations and retrofit upgrades, the MCG 1500SFI protects operators, reduces maintenance, and ensures audit-ready accuracy for custody transfer, density, and BS&W measurement worldwide.
Achieves ±0.4 mm accuracy and ±0.1 mm sensitivity for true custody-grade performance and inventory precision.
Calibrate or configure from the ground without opening the housing or entering hazardous areas — improving safety and reducing technician time.
Servo motor system with minimal moving parts extends service intervals and uptime, even in harsh or viscous applications.
Integrates easily via L&J Tankway, Modbus, HART, Foundation Fieldbus, Profibus, and WirelessHART, plus legacy emulation for seamless retrofit projects.
Provides full custody data — product, interface, and sediment/water layers — for compliance and quality verification.
Operates from –40 °C to +315 °C and rated up to 300 psi, suitable for LPG, LNG, asphalt, and other demanding services.
Certified to UL, ATEX, CENELEC, and CE, ensuring worldwide compliance in Class I, Div. 1 environments.
Supports up to four discrete relays for pump, valve, and safety interlocks — ideal for automated process control.
| Parameter | Specification |
|---|---|
|
Accuracy |
±0.4 mm (±0.016 in) |
|
Sensitivity |
±0.1 mm (±0.004 in) |
|
Technology |
Servo displacement with Smart Flash IR calibration |
|
Range |
0–75 ft (22 m) standard, up to 150 ft (46 m) optional |
|
Density Accuracy |
±5 kg/m³ (custody-grade) |
|
Temperature Accuracy / Resolution |
±0.5 °F (±0.3 °C) / 0.1 °F (0.06 °C) |
|
Communications |
L&J Tankway, Modbus, HART, Foundation Fieldbus, Profibus, WirelessHART, legacy emulation |
|
Baud Rate |
Selectable 300–9600 |
|
Display |
4-line × 20-character LCD (optional ground-level display) |
|
Control I/O |
Up to 4 relay dry contacts; valve/pump control; discrete inputs/outputs |
|
Power Consumption |
200 mA @ 110 VAC |
|
Pressure Rating |
25 psi standard; optional 150 psi / 300 psi |
|
Operating Temperature |
Drum: –40 °C to +315 °C; Electronics: –40 °C to +85 °C |
|
Construction |
Aluminum (25 lb) or Stainless Steel |
|
Mounting |
2″ NPT or ANSI 150#/300# flange |
|
Certifications |
UL/C-UL, ATEX II 1/2 G EEx d IIB T6, CENELEC, CE |
|
Lightning Protection |
Built-in surge suppression |
Have a look at the flyer to get all the tech specs and product features.
Brochure
Read the manual for detailed information and instructions.
Manual
Check out a sample cert from our calibration lab.
Certificate
If you have a question that we have not covered then just get in touch and we’ll be happy to help.
We have tried to answer the most common questions we are asked here.
With over a century of tank gauging expertise, Cognesense and L&J Technologies deliver the MCG 1500SFI — a globally trusted servo gauge that combines custody-grade precision, infrared safety, and system flexibility in one solution.
Engineered for accuracy down to 0.4 mm, it measures level, density, and BS&W in even the harshest conditions, while its brushless design and field-upgradeable electronics reduce lifecycle costs.
Certified to UL, ATEX, and CE standards and compatible with modern and legacy protocols, the MCG 1500SFI empowers operators to measure, monitor, and protect their most critical assets — safely, accurately, and efficiently.