4 vs My LoopCal

4-20 Temperature Calculator is a practical tool for engineers, technicians, and field service professionals working with 4-20 mA transmitters. Use it to quickly convert: • 4-20 mA to temperature • Temperature to 4-20 mA The app helps you work faster in the field by giving you a simple and accurate way to check transmitter scaling, verify loop values, and troubleshoot signal readings. Key features: • Two-way conversion between current and temperature • Custom min/max process range • Support for negative temperature ranges • Celsius and Fahrenheit input/output • Fast, clean interface for everyday use • Useful for HVAC, process control, maintenance, and commissioning work Whether you are calibrating a transmitter, checking a loop, or validating process values, 4-20 Temperature Calculator gives you the numbers you need in seconds.

LoopCal turns a 4–20 mA loop check into a calibration worksheet you can hand over, and it is the quickest way to convert a signal in the field. Built for instrumentation and calibration technicians. Fully offline. FROM CHECK TO WORKSHEET • Guided three-point, five-point, and custom 2–21-point checks • As-found and as-left runs, with the error and pass/fail at every point • Up-scale and down-scale readings with hysteresis • Tolerance as percent of span, signal units, or engineering units • Worst point and maximum error summarized for you • A clean PDF worksheet with your company name and logo, in US Letter or A4, plus CSV for your records CONVERT IN SECONDS • 4–20 mA, 0–20 mA, 0–10 V, 1–5 V, and your own custom signal endpoints • Direct-acting and reverse-acting ranges • Linear and square-root (flow) transfer functions • Engineering ranges with any unit, including negative and offset spans • Percent, signal, and engineering values update as you type, with the substituted formula shown • Verify this loop: take the range you just entered straight into a check EVERY INSTRUMENT ON RECORD • Save instruments with their ranges and calibration history • See what is coming due, and get a reminder before the next calibration • Reopen a saved instrument and start its next check without retyping the range LOOP POWER MATH • Shunt resistor voltage drop • Required supply voltage and remaining compliance • Maximum loop and wire resistance PRIVATE BY DESIGN • Everything runs on your device. No account, no ads, no tracking, no network. LoopCal is a calculation aid and field worksheet — not a calibrator, an accredited calibration service, or a replacement for manufacturer procedures. Always follow site lockout/tagout, operations authorization, device manuals, and approved procedures. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/