Yokogawa CA71 Handy Calibrator
Request a quote
Yokogawa CA71 is a portable multifunction calibrator that simultaneously sources and measures voltage, current, resistance, TC, RTD, frequency, and pulse signals with memory storage.
Product details
| Model | CA71 |
| Manufacturer | Yokogawa |
| Category | Calibration Instruments |
| Availability | Made to order |
Description
Overview
Yokogawa CA71 is a portable multifunction calibrator designed for field and lab use. This lightweight handy calibrator can simultaneously source and measure voltage, current, resistance, thermocouple (TC), RTD, frequency, and pulse signals. The intuitive rotary switch interface makes operation simple—just open the carrying case, connect the cables, and begin taking measurements. It stores up to 50 value sets in internal memory for easy field documentation and recall.
Key Features
- Simultaneous source and measurement of multiple signal types: voltage, current, resistance, TC, RTD, frequency, and pulse
- Auto-step output function with selectable step intervals (2.5 or 5 seconds)
- Sweep function with adjustable sweep time (16 or 32 seconds)
- Memory function: stores up to 50 value sets with associated measurements
- Segmented LCD display (approx. 76 × 48 mm) with LED backlight
- Simple rotary switch operation
- RS-232 serial interface for optional online communication (cable sold separately)
- Compact design: approx. 190 × 120 × 55 mm, 730 g including batteries
Applications
- Field calibration of process transmitters and sensors
- Verification of 4-20 mA loops and 24 VDC power supplies
- Temperature measurement and thermocouple verification
- Frequency and pulse signal calibration
- Maintenance and troubleshooting of industrial instrumentation
Included Accessories
- Lead cables for source (one red, two black)
- Lead cables for measurement (one red, one black)
- Carrying case
- Terminal adapter
- Four AA-size alkaline batteries
- Replacement fuses
- User's manual
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 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) |
| 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 |
| CA71 | CA71 HANDY CAL calibratorProvided with temperature measurement and communication functions |
Request a quote
Yokogawa CA71 Handy Calibrator
Response within 24 hours
No obligation
Direct communication