High Precision Voltage Current Loop Calibrator Handheld Auto Signal Generator

Basic characteristics of the product

• Input measurement characteristics

• Basic functions

DC voltage DCV, DC current DCI

• The maximum measurement accuracy is 0.05% and the measurement display is 5 digits.
• Measurement rate: 2-3 times/sec.
• Loop detection function, internal 24V circuit power supply, and simultaneous measurement of current.
• mA has a percentage display mode.

• Analog output characteristics

• Basic functions

DC current DCI

The maximum measurement accuracy is 0.05% and the measurement display is 5 digits.

• Output settings can be manually increased or decreased by position.
• DCI output includes active output (internal 24V power supply) and passive output (external 24V power supply).
• mA has a percentage display mode.
• During DCI output, it can provide manual stepping and automatic waveform output functions.

The manual stepping output mode includes: 25% stepping and 100% stepping.

The output current is selectable from 0~20mA or 4~20mA.

Automatic wave output type includes: automatic step, sawtooth wave, triangle wave, and automatic waveform working parameters can be configured.

• Internal 24V circuit power supply.
• It has maintenance setup functions, including

Auto power-off, backlight, flashlight

• Others

• The segment code is displayed on an LCD with a white backlight.
• It has a LED flashlight for lighting.
• It is powered by 3 AA battery cells. The battery compartment door is convenient for battery replacement. Low-battery detection is available.
• It is small, firm, reliable, suitable for field use, and cheap.
• User-optional large-suction magnetic sling is provided.

II. Basic function and performance of the product (technical index)

Analog measurement function [Used within one year after calibration, 23 ℃± 5 ℃, 20-70% RH, accuracy=± (% set value+% reading)]

Other characteristics:

• Uncertainty includes standard uncertainty, hysteresis, nonlinearity, repeatability, and typical long-term stability over the period mentioned (K = 2).
• Maximum applied voltage at input end: about 30Vpk; Maximum applied current at input end: about 25mA
• The temperature range of internal temperature compensated sensor RJC is -10 to 50°C. The temperature measurement accuracy at 18 to 28°C is ±0.5°C, and the temperature measurement accuracy at other temperature is ±1°C. Cold end compensation time is 10S/ times.
• Temperature coefficient: 0.1 × basic accuracy/℃ (temperature range < 18℃ or > 28℃)

Input output function [Used within one year after calibration, 23℃±5℃, 20-70% RH, accuracy =+/-(% set point + reading %)]

Other characteristics:

• Uncertainty includes standard uncertainty, hysteresis, nonlinearity, repeatability, and typical long-term stability over the period mentioned (K = 2).
• Display refresh rate: 2~3 times / second.
• Maximum applied voltage at input end: 60 Vpk; Maximum applied current at input end: 50mA.

Current input protection: 100mA/250V Fast FUSE

• Input common-mode rejection: 50Hz /60 Hz > 120 db; Input serial-mode rejection: 50Hz /60 Hz > 60 db
• The temperature range of internal temperature compensated sensor RJC is -10 to 50°C. The temperature measurement accuracy at 18 to 28°C is ±0.5°C, and the temperature measurement accuracy at other temperature is ±1°C. Cold end compensation time is 10S/ times.
• Temperature coefficient: 0.1 × basic accuracy / ℃ (temperature range <18℃ or >28℃)