Yokogawa CA450 Data sheet

Process Multimeter

Loop Power and 4 to 20mA Output function in a DMM

From daily inspection to troubleshooting of measurement instruments— all in a single unit!

Features

n Loop check functions

•

Simultaneous 24 V loop power andmA measurement

•

HART mode setting with loop power

(250 OHM resistance)

n Generation functions

•

SIMULATE (SINK) function simulates transmitters

•

4-20 mA span/step/auto-step/sweep output

n Measurement functions

•

High accuracy signal measurement:

DC mA 0.05%/30.000 mA

•

Handheld DMM function

•

Peak/Hold function for DCS power peak-to-peak

measurement

•

Dedicated sensor modes for direct reading of many

sensor signal types

n Safer—helps eliminate electric shocks

•

Current terminal shutter prevents incorrect connections

•

Sensor function handles AC load current measurement

•

Meets 600 V CAT. IV, 1000 V CAT. III safety standards

n Linking with a PC

•

Transfer data to a PC via IR-USB

LF CA450E

Main Functions

Main Specifications

Loop Check function

Transmitter simulator function

Span/Step/Sweep Output function

IR-USB communication function

(dedicated adapter sold separately)

Signal Conditioner

Distributor

LOOP POWE R (24V DC)

2-wire Transmitter

4-20mA

Red Black

Signal Conditioner

Distributor

SIMUL ATE

(SIN K)

2-wire Transmitter

4-20mA

Black

Red

100%

20mA

4mA

40sec15sec

SlowFast

This is an example of a connection with a 2-wire transmitter. When the HART load resistance is ON with a loop power of 24 V, there is a load of up to 20 mA. Therefore, you can measure outputs of 4-20 mA while operating the 2-wire transmitter.

This is an example of a connection to a distributor used with a 2-wire transmitter. You can simulate (sink) current of an up to 48 V supply to check the loop circuit.

Switch output settings from 4 to 20 mA with the touch of a button for easy operational checks on valves and other devices.

Increases/decreases the output value at a constant rate until reaching a set value. Switch between step and sweep, and between 15/40 second speeds.

Using the IR-USB communication function, you can send measured values to a PC, or transfer settings for measurement of generated current from the PC to the main unit.

You can switch the output setting value between 4 and 20mA in 4mA steps. at the touch of a button or automatically with selectable interval time to improve efficiency.

selectable Interval

20mA

16mA

12mA

8mA

4mA

100%

75%

50%

25%

4-20 mA span generator function

4-20 mA step generator function

Operating Environment

Ambient temp.: 23°C ±5°C, relative humidity: 45 to 75% no condensation)

Measuring accuracy: ±(%of reading + digits)

4–20 mA sweep generator function (sweep)

Speciﬁcation Accuracy and Range

Measurement

DC voltage

0.09% rdg+1 dgt

600.0 mV to 1000 V

Current voltage (true rms value)

0.5% rdg+5 dgt

600.0 mV to 1000 V

(45 to 500 Hz)

DC current (mA)

0.05% rdg+2 dgt/30.000 mA

0.05% rdg+2 dgt/100.00 mA

Impedance

0.2% rdg + 1 dgt

600.0

to 60.00 M

Frequency

0.005% rdg + 1 dgt

199.99 Hz to 19.999 kHz

Diode test

1% rdg + 2 dgt

2.000 V

Continuity Beeps under 50 ±30

Display update rate (times/sec.) 2.5 to 5

Data hold

Peak hold (DCV)

Standard deviation

Max/min

Source

DC current (mA)

0.05% to span of 20.000mA

0.001mA to 25.000mA, Max. load 28 V

Simulate (Sink)

0.05% to span of 20.000mA

0.001mA to 25.000mA, Ext. power 15 to 48 Vdc

Loop power function 24V with 250 resistance ON/OFF function

Auto-step

Auto-sweep

Step (manual)

General

Safety standard EN61010/1000VCAT III, 600VCAT IV

Communication (optional) IR-USB

Backlight

Operating temperature -20 to +55°C

Storage temperature -40 to +70°C

Current terminal shutter

prevents incorrect connections

Accessories (Sold separately)

Name

Model Code

Detail

1to5V Adapter set 99031 Converts 4-20mA to 1-5V

DMM Communication

Package

92015

USBcommunication adapter + USBcommunication

cable + Application Software

Alligator Test Lead 99014 1000V CAT III, 600VCAT IV Red Black 1 set

Carrying case 93029 Capable for communication package

AC/DC Current clamp probe

96095 DC180A, AC130A output 10mV/A 96001 AC400A 96030 AC200A 96031 AC500A

Current Clamp Probe 96032 AC700A

96033 AC50A 96034 AC3000A 96035 AC3000A

Spare parts

Test Lead 98015 1000V CAT III, 600VCAT IV Red Black 1 set

Lead Cable 98064 Alligator clip, Cat I, for control signal only (under 50V)

Fuse 99042 440mA/1000V 10kAcut off 1piece

Product Model code

Name Model Code Sufﬁx code

Process Multimeter CA450 -E

Subject to change without notice.

[Ed: 01/b] Printed in Japan: Oct. 2010(B)/5,000(KP)