Yokogawa CA71 Handy Calibrator

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Yokogawa CA71 Handy Calibrator

The CA71 Portable Calibrator is a small, lightweight, multifunction calibrator by Yokogawa that can simultaneously source and measure voltage, current, resistance, TC, RTD, frequency, and pulse signals with high accuracy. The Handy Calibrator incorporates rotary switches for simple handling. Just open the carrying case cover and connect the cables, and you're ready to take measurements.

Features

Source
Values set in steps of 4-20 mA 24V DC Power Supply to Transmitter
Divided output (n/m) function
Output settings are divided, eliminating the need for bothersome calculations for percentage output.
Autostep function
Changes the output value in step form based on the setting from the divided output (n/m) function. Changes can be sourced automatically every 10% or 25%.
Online communication (CA71 only) RS-232C-compliant optically isolated interface
Sweep function
Linearly increases or decrease the output. The increasing/decreasing time can be set to either 16 or 32 seconds.
Memory function
Source values and measurements forming individual value sets can be saved to or read from the Handy Calibrator’s internal memory (maximum 50 value sets).
Temperature monitor function

Product Details

Auto-Step Output Function n value sent automatically when n/m function selection is selected (two options: approximately 2.5 seconds/step or approximately 5 seconds/step)
Sweep Functions Sweep time (two options: approximately 16 seconds or approximately 32 seconds)
Memory Function 50 value sets (generated and measured values are stored as value sets with the same address (up to 50 value sets can be stored))
Measuring Unit Maximum Input Voltage terminal: 300 V AC Current terminal: 120 mA DC
Current Terminal Input Protection Fuses: 125 mA/250 V
Measuring Unit Ground Voltage Maximum 300 V AC
Measurement Display Updating Rate Approximately once per second
Serial Interface Enabled when communication cable (RS232) is connected; sold separately as optional accessory
Display Segmented LCD (Approx. 76 mm × 48 mm)
Backlight LED backlight; auto-off after one minute (from when LIGHT key is turned on)
Power Supply Four AA alkaline batteries, or special AC adapter (sold separately)
Battery Life Measurement off, output 5 V DC/10 kO or greater: Approximately 40 hours Simultaneous signal generation/measurement, output 5 V DC/10 kO or greater: Approximately 20 hoursSimultaneous signal generation/measurement, output 20 mA/5 V: Approximately 12 hours (using alkaline batteries, with backlight off)
Auto-Power-Off Function Approx. 10 minutes (auto-power-off can be disabled through a DIP switch setting)
Applicable Standard EN55011: 1998, Class B, Group 1
EN61326-1: 1997 + A1: 1998
IEC61010-1, IEC61010-2-31
Insulation Resistance Across input terminal and output terminal, 500 V DC, 50 MO or greater
Withstand Voltage Across input terminal and output terminal, 3.7 kVAC, for one minute
Operating Temperature And Humidity Ranges 0 – 50°C, 20 – 80% RH (no condensation)
Storage Temperature And Humidity Ranges -20 – 50°C, 90% RH or less (no condensation)
External Dimensions Approx. 190 × 120 × 55 mm
Weight Approx. 730 g (including batteries)
Product Overview
Easy Operation The Handy Calibrator incorporates rotary switches for simple handling. Just open the carrying case cover and connect the cables, and you’re ready to take measurements.
A Wide Array of Useful Functions
Source
Values set in steps of 4-20 mA 24V DC Power Supply to Transmitter
Divided output (n/m) function
Output settings are divided, eliminating the need for bothersome calculations for percentage output.
Autostep function
Changes the output value in step form based on the setting from the divided output (n/m) function. Changes can be sourced automatically every 10% or 25%.
Online communication (CA71 only) RS-232C-compliant optically isolated interface
Sweep function
Linearly increases or decrease the output. The increasing/decreasing time can be set to either 16 or 32 seconds.
Memory function
Source values and measurements forming individual value sets can be saved to or read from the Handy Calibrator’s internal memory (maximum 50 value sets).
Temperature monitor function

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User Manual Download PDF

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