Sensors and instruments require a wide variety of operation checks in the field. The Yokogawa CA71 Multifunction Calibrator is a small, lightweight, multifunction calibrator that can simultaneously source and measure voltage, current, resistance, TC, RTD, frequency, and pulse signals. Simultaneous signal generation and measurement capability: The CA71 lets you handle regular tests on TCs, RTDs and various other types of sensors and instruments, as well as operation checks when a problem has occurred
Simultaneous signal source and measurement capabilities
The CA71 lets you handle regular tests on TCs, RTDs and various other types of sensors and instruments, as well as operation checks when a problem has occurred. By itself it can source signals for input to equipment, and check output signal from equipment. With the CA71, you don’t need to worry about synchronizing operations with other setting devices. (TC and RTD measurement functions are CA71 only.)AC Voltage measurement capablity (including supply voltage)
In cases where numerous signal converters and other devices are mounted on a rack or panel, the Handy Calibrator can be used to check the input and output signals of each device, while simultaneously checking the power supply. There is no need for a separate multimeter to measure supply voltage.
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
Values set in steps of 4-20 mA24V DC Power Supply to Transmitter
- Divided output (n/m) function
Output settings are divided, eliminating the need for bothersome calculations for percentage output.
- Auto-step 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
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
Yokogawa CA71 Multifunction Calibrator Specifications:
|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
|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)|