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The Yokogawa CA450 Process Multimeter is a portable test instrument to combine a digital RMS multimeter and a loop calibrator to give process technicians the same functionality in one tool. 

The Yokogawa CA450 provides 24-Volt loop power, reducing the need for carrying a separate power supply when performing transmitter testing. And with its built-in, selectable 250-Ohm Hart resistor, it also eliminates the need for a separate resistor. 

Process technicians can now do the same job while carrying less equipment.
Features
  • Source commonly used field instrumentation standards such as loop power, and miliamps DC
  • Measure like a DMM; capture and log current, voltage, resistance, and even DCS power
  • Step/Sweep outputs for enhanced testing of field equipment
  • PC communication for traferring and saving data
  • Prevent polarity error issues with terminal safeguards to prevent incorrect wiring
  • Conforms to 600V CAT. IV and 1000V CAT III

Specifications

Accuracy

  • ± (0.05 % of Reading + 2-Digits) - DC Current Measurement
  • ± (0.09 % of Reading + 1-Digit) - DC Voltage Measurement
  • ± (0.09 % of Reading + 2-Digits) - DC Voltage Measurement
  • ± (0.1 % of Reading + 1-Digits) - DC Voltage Measurement
  • ± (0.2 % of Reading + 1-Digit) - Resistance Measurement
  • ± (0.2 % of Reading + 2-Digits) - Resistance Measurement
  • ± (0.35 % of Reading + 3-Digits) - Resistance Measurement
  • ± (0.5 % of Reading + 5-Digits), 50/60 Hz - AC Voltage Measurement
  • ± (1 % of Reading + 2-Digits) - Resistance Measurement
  • ± (1 % of Reading + 5-Digits), 40 to 500 Hz - AC Voltage Measurement
  • ± (1.5 % of Reading + 5-Digits), 500 Hz to 1 kHz
  • 0.05 % - High-Precision Signal Measurement

Approvals & Certifications

  • CE
  • EMC Standards: EN 61326-1, EN 61326-2-2 & EN 55011 Class B Group 1

Approvals & Certifications

  • EN 61010-2-031
  • EN 61010-2-033

Battery Life

  • 10 Hours - DC Current Output (SOURCE) 12 mA (500 ohms Load)
  • 140 Hours - DC Voltage & DC Current Output (SIMULATE)

Communication

  • BRAIN
  • HART

Current

  • < 1.2 mA - Max.
  • 30 to 100 mA - DC Current Measurement

Display

  • 5-Digit LCD (7-Segment)

Electrical Rating

  • CAT III 1000 V
  • CAT IV 600 V

Electromagnetic Rating

  • RFI/EMI

Frequency

  • 10 Hz to 20,000 kHz

Function

  • Auto Hold
  • Data Hold
  • Maximum
  • Measurement - DC Voltage, AC Voltage, DC Current, Resistance, Frequency, Continuity Check, Diode Test
  • Peak Holder

Humidity

  • 70 % Relative Humidity or Less (Non-Condensing) - Storage
  • 80 % Relative Humidity or Less (Non-Condensing) - Operating

Indication

  • Low Battery Indicator
  • Overrange Indicator: ”OL”
  • Polarity Indicator

Input

  • 0.3 to 600 Vrms - Frequency Measurement
  • 1,000 Vdc - Max.
  • 1,000 Vrms - Input Protective Voltage
  • 1,000 Vrms AC - Max.

Insulation Resistance

  • 100 megaohms or Greater at 1000 Vdc

Load

  • 0-20 mA - SOURCE (Compliance Voltage 28 V), SIMULATE (SINK) External Power Supply 15 to 48 V Overrange up to 25 mA < 10 MH
  • 24 Vdc Typical, Load Current 20 mA

Operating Temperature

  • -20° to 55° C (-4° to 131° F)

Output

  • 20 mA - DC Output
  • 20 mA DC Current Output Source & Current Output Simulate (Sink)
  • 4-20 mA - to Drive the 2-Wire Transmitter

Power Requirement

  • 24 V - Loop Power
  • 4 AA Alkaline Batteries

Power Supply

  • 24 Vdc / 20 mA DC - Loop Power

Range

  • 30.000 mA DC - High-precision Signal Measurement
  • 600 mV-1,000 V - DC Voltage, AC Voltage Measurement

Resistance

  • 250 ohms - HART Mode Resistance
  • 600 ohms - Continuity Check
  • 600 ohms to 60 megaohms
  • Input Resistance: 10 megaohms or more - DC Voltage, AC Voltage (< 200 PF, < 50 PF)

Resolution

  • 0.001 mA - DC Current Measurement
  • 0.01 mA - DC Current Measurement
  • 0.1 mV-1 V - DC Voltage, AC Voltage Measurement
  • 0.1 ohms - Continuity Check
  • 0.1 ohms to 0.01 megaohms - Resistance Measurement
  • 1 Hz - Frequency Measurement
  • 1 V - DC & AC Voltage

Response Time

  • Within 1 second - DC Voltage, DC Current Measurement
  • Within 10 seconds for 6 megaohms to 60 megaohms
  • Within 2 seconds for 600 ohms to 600 kiloohms

Shock

  • 1 metre Drop

Storage Temperature

  • -40° to 70° C (-40° to 158° F)

Supply Voltage

  • < 3.5 V - Open-Loop Voltage
  • 6.88 kVac for 5 seconds (Between the Input Terminals & the Case) - Withstand Voltage

Temperature Effect

  • Add the Accuracy of 23° C ± 5° C x 0.1/°C

Vibration

  • 0.15 mm - Sweep Vibration Frequencies 10 Hz to 5 Hz to 10 Hz

Voltage Drop

  • < 0.3 V - DC Current Measurement
  • < 0.8 V - DC Current
  • < 3.5 V - Resistance
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