TempCalc

TempCalc ETO is a comprehensive marine electro-technical calculation suite designed for Electro-Technical Officers (ETOs), marine engineers, refrigeration technicians, and electrical professionals working in the maritime industry.

═══ SENSOR CALCULATORS ═══

RTD Sensor Calculator (IEC 60751)
— Supports PT100 (R₀=100Ω), PT500 (R₀=500Ω), PT1000 (R₀=1000Ω)
— Callendar-Van Dusen equation per ITS-90 standard
— 4 modes: Table Generator, Ω → Temperature, Temperature → Ω, Tolerance Check
— Tolerance classes: Class A (±0.10 + 0.0017·|T|°C), Class B (±0.30 + 0.005·|T|°C)
— Valid range: −200°C to 850°C
— Units: °C, °F, K

Thermocouple Calculator (IEC 60584 / NIST MN-175)
— Supports 8 thermocouple types: K, J, T, E, N, R, S, B
— Linear interpolation on ITS-90 reference tables
— 4 modes: Table Generator, mV → Temperature, Temperature → mV, Tolerance Check
— Tolerance classes: Class 1, Class 2
— Cold junction compensation included

═══ ETO CALCULATION SUITE ═══

Electrical Calculations (8 tools):
— Ohm's Law: Solve any two unknowns (V, I, R, P)
— 3-Phase Power: Calculate kVA, kW, kVAR, PF, line current
— Voltage Drop: Single-phase / three-phase with copper resistivity (IEC 60364)
— Motor Calculator: Full load current, DOL starting current (7×), shaft torque
— Transformer Calculator: Turns ratio, secondary current
— Battery Calculator: Runtime and required capacity with depth of discharge
— Cable Sizing: Minimum CSA for allowed voltage drop
— RPM / Frequency Converter: Hz ↔ RPM synchronous speed

Unit Converters (3 tools):
— Pressure: bar ↔ psi ↔ kPa ↔ MPa ↔ atm ↔ mmHg
— Power: kW ↔ hp (metric) ↔ hp (imperial) ↔ W ↔ MW
— Torque: N·m ↔ ft·lb ↔ kgf·m ↔ in·lb

Marine Engineering (2 tools):
— Fuel Consumption: Generator fuel use based on SFOC (g/kWh)
— Tank Volume: Rectangular and horizontal cylindrical tanks with partial fill

═══ REFRIGERATION ENGINEERING ═══

Reefer Alarm Reference Database:
— 414 alarms across 4 major OEMs: Daikin, Carrier, Thermo King, Star Cool
— Filter by OEM, severity (Warning / Fault / Critical), and text search
— Each alarm includes: code, description, possible causes, corrective actions, notes, sub-model, and source document reference

Refrigerant Tools:
— P-T Tables (Pressure-Temperature saturation) for 8 refrigerants: R134a, R404A, R410A, R22, R407C, R744 (CO₂), R452A, R448A
— Display modes: bar gauge, bar absolute, psi gauge
— Superheat Calculator with status indicators (target 5–12 K)
— Subcooling Calculator with status indicators (target 4–8 K)
— COP Calculator with efficiency ratings
— Cooling Capacity Converter: kW ↔ TR ↔ BTU/hr ↔ kcal/h ↔ kJ/h
— Refrigerant reference cards with GWP, ODP, safety class, phase-out status, and alternatives

═══ STANDARDS REFERENCED ═══
ITS-90 • IEC 60751 • IEC 60584-1 • NIST Monograph 175 • IEC 60364 • IEEE Std 141 • SOLAS • ASHRAE 34 • Kigali Amendment / Montreal Protocol

═══ DISCLAIMER ═══
This application is provided for educational and informational purposes only. Calculations are based on standard industry formulas and may not reflect any specific sensor or installation. Do not use for safety-critical systems without verification by a qualified engineer. Always confirm with calibrated professional instruments. The developer assumes no liability for any damages resulting from use of this app.