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The AMA011 and AMA012 are compact, rugged Volt/mA Loop Calibrators built for technicians who need fast, accurate calibration of transmitters, PLCs, and control loops in the field or on the bench. As a full Volt mA Loop Process Calibrator, each unit measures and sources 0–24 mA DC current and 0–20 V DC voltage, while the AMA012 adds direct thermocouple measurement and simulation — making it a true all-in-one Loop Calibrator for process instrumentation, industrial automation, and quality-control applications. Whether you're troubleshooting a 4–20 mA loop, powering a transmitter under test, or verifying a thermocouple sensor, this volt ma calibrator delivers lab-grade accuracy in a pocket-sized, field-ready housing.
Measures and sources 0–24 mA DC current and 0–20 V DC voltage in one unit
Thermocouple measurement and output for types J, K, T, E, R, S, B, N (AMA012)
Built-in 24 V loop power supply for powering transmitters directly during test
Large dual 5-digit LCD display for simultaneous readout of measured and reference values
Ladder and ramp output modes for automated step and sweep testing
Store and recall up to 10 group settings for repeatable calibration routines
Quick-output presets — assign a value to a single key for one-touch output
USB / remote interface for automated benchtop operation
Compact, rugged, field-ready design with rubberized holster
Accuracy up to ±0.06% (voltage) and ±0.7 °C (temperature), model dependent
This Volt/mA Loop Process Calibrator is widely used across process industries for:
Calibrating and troubleshooting 4–20 mA transmitter loops
Verifying PLC and DCS analog input/output channels
Simulating transmitter signals during commissioning and maintenance
Measuring and sourcing thermocouple signals for temperature instrumentation
Pharmaceutical, food & beverage, oil & gas, and general manufacturing quality control
Robotics and automated production line instrument testing
| Function | AMA011 | AMA012 |
|---|---|---|
| DC Voltage Input & Output | 0–100.00 mV ±(0.06% + 4) 0–20.000 V ±(0.08% + 5) | 0–100.00 mV ±(0.1% + 5) 0–20.000 V ±(0.1% + 5) |
| DC Current Input & Output | 0–24.000 mA ±(0.1% + 3) | 0–24.000 mA ±(0.08% + 5) |
| Thermocouple Types | — | J, K, T, E, R, S, B, N |
| Loop Power Output | 24 V ±10% | 24 V ±10% |
| Over-Voltage Protection | 30 V | 30 V |
| Input Impedance | 2 MΩ | 2 MΩ |
| Display | Large dual 5-digit LCD | |
| Type | Range | Accuracy |
|---|---|---|
| K | -200.0 °C ~ +1370.0 °C | ±0.7 °C |
| J | -200.0 °C ~ +1200.0 °C | ±0.7 °C |
| E | -200.0 °C ~ +1000.0 °C | ±0.7 °C |
| T | -200.0 °C ~ +400.0 °C | ±0.7 °C |
| N | -250.0 °C ~ +1300.0 °C | ±0.9 °C |
| S | -20 °C ~ +1750 °C | ±2 °C |
| R | -20 °C ~ +1750 °C | ±2 °C |
| B | +600 °C ~ +1800 °C | ±2 °C |
Cold-junction compensation (CJC) adds ±0.3 °C additional error. Specifications apply from +18 °C to +28 °C over a one-year calibration cycle.
| Dimensions | 204 (L) x 96 (W) x 41 (H) mm |
| Weight | Approx. 418 g (without battery) |
| Power Supply | 6 x AAA batteries; optional AC/DC adapter (12 VDC, 2 A max) |
| Fuse | F 0.125 A / 250 V fast-acting |
| Operating Temperature | -10 °C to +50 °C (14 °F to 122 °F) |
| Storage Temperature | -40 °C to +60 °C (-40 °F to 140 °F) |
| Operating Altitude | Up to 2000 m |
| Temperature Coefficient | ±0.01% of range per °C (below 18 °C and above 28 °C) |
| EMC Compliance | EN 61326-1 |
| Certification | CE |
| Volt/mA Loop Calibrator (AMA011 or AMA012) | 1 pc |
| Test lead set | 1 set |
| Alligator clip set | 1 set |
| Mini-USB cable | 1 pc |
| Software CD | 1 pc |
| K-type thermocouple sensor (VA702) | 1 pc |
From routine 4–20 mA loop checks to full transmitter simulation and thermocouple verification, the AMA011/AMA012 series delivers the accuracy, portability, and versatility that instrumentation technicians rely on every day. As a dependable Volt mA Loop Process Calibrator, it replaces multiple bench instruments with one rugged handheld tool — helping you calibrate faster, reduce downtime, and keep your process instrumentation running within spec.