BASIC INFO
Yokogawa CA450 Process Multimeter with Loop Power 4 to 20mA Output Function
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 of Yokogawa CA450 Process Multimeter with Loop Power 4 to 20mA Output Function
· Loop check functions
– Simultaneous 24 V loop power and mA measurement
– HART/BRAIN mode setting with loop power (Adds 250 ohm resistance internally
· Generation functions
- SIMULATE (SINK) function simulates transmitters
– 4-20 mA span/step/auto-step/sweep output
· Measurement functions
- High accuracy signal measurement:
– DC mA 0.05%/30.000 mA
– Handheld DMM function
– Peak Hold function for the peak voltage measurement of DCS power supply
– Dedicated sensor modes for direct reading of many sensor signal types
Applications of Yokogawa CA450 Process Multimeter with Loop Power 4 to 20mA Output Function
· Operating check, adjustment for valve and positioner
· 4–20 mA step/Auto-step/sweep output applications
· AC/DC current measurement (sensor mode)
· 2-wire transmitter loop check (mA LOOP POWER) and simulator (20 mA SINK)
· Power supply peak-to-peak measurement
· Panel meter inspection
Description of Yokogawa CA450 Process Multimeter with Loop Power 4 to 20mA Output Function
The Yokogawa CA450 process multimeter is an on-site measuring instrument that combines the functionality of a digital multimeter for basic measurements such as voltage, current, and resistance, with a 4-20mA loop calibrator for electrical and process measurements. With specialized functions for repair, maintenance, and troubleshooting of plant equipment, the Yokogawa CA450 is a single-unit, on-site measuring solution that reduces the engineering load and improves plant efficiency by accomplishing tasks that have traditionally required two on-site measuring instruments.
The CA450 is a true RMS digital multimeter with a basic accuracy of 0.05% and dedicated sensor modes for direct inputs from sensors such as AC/DC clamp probes. In addition, the meter incorporates a number of process-related features including loop check and 4-20 mA output generation and measurement functions.
With the loop check function, designed for tests on 2-wire transmitters, the CA450 supplies 24 VDC power to the transmitter and measures the DC output in milliamperes to an accuracy of 0.05% up to 30 mA. A HART mode with loop power and 250 ohm resistance allows HART and BRAIN communications to be tested. A transmitter simulator function allows transmitter I/O to be checked by drawing in ('sinking') designated currents from the external voltage generators of the instrumentation. The 4-20 mA generator output includes span, step, auto-step and sweep capabilities.
The CA450 can also be used to carry out operating checks and adjustments on valve positioners, including zero span adjustment, response testing using the auto-step function, and tests for hunting, sticking/slipping and valve open/close errors. Controller programs can also be verified using the CA450's 4-20 mA step generation function, which switches between 4 and 20 mA in 4mA output steps.
Electrical measurements include power supply peak-to-peak measurement with instantaneous detection in the DC voltage measurement mode, and AC/DC current measurement up to 180 A AC and 3000 A AC in sensor mode. The CA450 can also be used to check panel meters for correct connection, reproducibility and errors. The CA450 features a safe design with current terminal shutters to protect both the operator and the instrument against incorrect connection. It conforms to the 600 V CAT. IV and 1000 V CAT. III standards. An optional adapter allows the instrument to be linked with a PC, with data transferred via an infrared USB interface.
The Yokogawa CA450 process multimeters ship complete with:
· Batteries
· Test leads
· Lead cables
· Fuses
· Instructional manual
· Measurement Functions
Yokogawa CA450 Process Multimeter with Loop Power 4 to 20mA Output Function
Specification Range Accuracy
DC Voltage 600.0 mV to 1000 V 0.09% rdg+1 dgt
AC Voltage 600.0 mV to 1000 V 0.5% rdg+5 dgt
DC Current 30.000 mA 0.05% rdg+2 dgt
30.000 mA 0.05% rdg+2 dgt
Impedance 600.0Ω to 60.00 MΩ 0.2% rdg + 1 dgt
Frequency 199.99 Hz to 19.999 kHz 0.005% rdg + 1 dgt
Diode Test 2.000 V 1% rdg + 2 dgt
Continuity Beeps under 50 ±30Ω
Display Update 2.5 to 5 times per second
Data Hold Yes
Peak Hold (DCV) Yes
Standard Deviation Yes
Max/Min Yes
Yokogawa CA450 Process Multimeter with Loop Power 4 to 20mA Output Function
Source Functions
Specification Range Accuracy
DC Current 0.001 to 25.000mA 0.05% to span of 20.000mA
Simulate (sink) 0.001 to 25.000mA 0.05% to span of 20.000mA
Loop Power Function 24V with 250Ω resistance ON/OFF function
Auto-step Yes
Auto-sweep Yes
Step (manual) Yes
Yokogawa CA450 Process Multimeter with Loop Power 4 to 20mA Output Function
General
Specification Details
Safety Standard EN61010/1000VCAT III, 600VCAT IV
Communication (optional) IR-USB
Backlight Yes
Operating temperature -20 to +55°C
We are specialized in intelligent instruments, including : control system, transmitters, flow meters,sensors, recorders, analyzers, control valves, controllers, PLC's, etc.
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Packaging:
Imported with original packaging or standard export packing.Customize design is acceptable.
Contact:
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