UNI-T UT705 Single Function Loop Calibrator
The UNI-T UT705 is a handheld, single-function loop calibrator designed for high-precision work in industrial instrumentation and control systems. Its primary role is to verify, calibrate, and troubleshoot 4-20 mA current loops, which are the standard signal type for transmitting sensor data in process automation. It serves as a reliable reference tool for technicians to ensure the accuracy of transmitters, controllers, and other loop-powered devices.
This device operates in two key modes: measurement and source/simulation. In measurement mode, it can accurately read DC voltage and, most importantly, the current in a live 4-20mA loop. A standout feature is its ability to simultaneously power a 2-wire transmitter and measure its output current, eliminating the need for an external power supply. In source mode, it generates a precise and stable DC current signal to simulate a transmitter’s output for testing receivers and control systems.
Built for efficiency in the field, the UT705 features an ergonomic design with a clear LCD display and a logical button layout for one-handed operation. It includes advanced automated functions like stepping and ramping, which automatically cycle the output signal to quickly test the linearity and response of a connected device. This combination of precision, functionality, and automated testing features makes it a dedicated tool for improving calibration workflow.
Features:
- Measures DC voltage, DC current, and 4-20mA loop current.
- Outputs/simulates DC current for testing.
- Provides 24V loop power to a transmitter while simultaneously measuring its mA output current.
- High accuracy of up to 0.02% for both measurement and output.
- Automatic ramp and step output functions for fast linearity detection.
- Ability to store and recall frequently-used settings.
- Compact, handheld, and ergonomic design for easy portability.
- Adjustable backlight brightness for various lighting conditions.
Specifications:
| Parameter | Range | Resolution | Accuracy |
|---|---|---|---|
| DC Voltage Measurement: | 0V – 31V | 0.001V | ±(0.02% + 2 digits) |
| DC Current Measurement: | 0mA – 24mA | 0.001mA | ±(0.02% + 2 digits) |
| Loop Current Measurement: | 0mA – 24mA | 0.001mA | ±(0.02% + 2 digits) |
| DC Current Output (Source): | 0mA – 24mA | 0.001mA | ±(0.02% + 2 digits) |
| 24V Loop Power Output: | 24V | – | ±10% |
| Operating Temperature: | 0°C to 50°C |
Applications:
- Calibration of 4-20mA Process Transmitters.
- Troubleshooting Control Loops.
- Testing and Simulating Instrumentation Inputs.
- Maintenance of PLCs and Recorders.
Package Contents:
- 1x UT705 Single Function Loop Calibrator Unit
- 1x User manual
- 1x Test leads
- 1x Alligator clip
- 1x 9V battery (type 6F22)
Note: Available after 60 days
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