Omega Products CL427 User Manual

Portable Multifunction
Calibrator

CL427

U Sources Milliamps, Millivolts,

Volts, Sine Wave, Square
Wave, Triangular Wave, and
11 Thermocouple Types

U 13-Point Calibration

Certificate

U Measures Current (mA),

Voltage (mV, V) and
Temperature (°C or °F)

U Short Circuit Protection
U Audio Frequency

Synthesizer

U Auto-Step and

Auto-Ramp Functions

U Simulation of PLC
U Rechargeable Lithium

Battery (Included)

U Data Logging Software

and Data Storage for
Field Calibrations

U Function Generation

for Vibration Testing

CL427 shown
smaller than
actual size.

Laptop not
included.

USB port.

Free Thermocouple

Included!

This model includes a free 1 m (40")
Type K insulated beaded wire thermocouple
with subminiature connector and wire spool
caddy (1 per channel). Order a Spare!

Model No. SC-GG-K-30-36

Applications
U Calibration of:

• Panel Meters or

Instruments for 11 Types
of Thermocouples
(Temperature)

• 4 to 20 mA Transmitters

and Panel Meters

• Valve Opening by
Changing Duty Cycle of a
PWM Signal

• Chart Recorder with

Different Waveforms
(Sine, Square, or
Triangular Wave)

U Generation of Selected Test

Frequency and Waveform
for Electronic Device

A highly accurate and powerful
system for testing, measuring
and calibrating built into a single
compact portable instrument.
The OMEGA® CL427 indicator­simulator is a multifunction
instrument designed to meet,
in a modern and practical way,

the needs of instrumentation
engineers, both in laboratory and
field work. Accurate, compact,
rugged and easy to use, it is
the ideal solution for measuring
and simulating: millivolts, volts,
milliamperes, frequency, sine,
square and triangular waveforms,
and thermocouples.

The CL427 has been developed
using the most advanced
microprocessor technology
to provide high accuracy on
extended ranges and a powerful
operating flexibility.

A unique internal automatic RJ
compensation system allows the
CL427 to provide accurate input
and output readings in operating
conditions with a temperature
range of 0 to 50°C (32 to 122°F).
Further, external compensation
is available that allows users to
fine tune temperature output and
measurement.

K-1

The model CL427 has been
designed for use in industrial
environments such as factory floors,
process plants, service departments
and maintenance workshops.
Millivolts, Volts, milliamps, and
frequency can be measured
or generated. Both accuracy
performance and stability allow
you to calibrate field and control
room instrumentation. Square
wave pulses can be generated with
frequencies from 0.3 Hz to 20 kHz.
Pulse height is adjustable between
100 mV and 20 Volts. With this
powerful function, the user can even
test electro mechanical devices
such as counters and relays.

Simulating non-linearized
temperature transmitters (Tx)
allows the user to check and
calibrate 4 to 20 mA system input
hardware and software quickly and
easily. User can set or manipulate
temperatures in °C or °F related to
any available sensor and send the
appropriate milliamps to the system
input. Milliamps can be monitored
simultaneously on calibrator display.

K

Electrical Specifications

(23 ±5°C, 10 minutes after turning on the power)

mA (Source) (Vopen > 15V); mA (Measure)

Range Resolution Accuracy of Reading

-4 to -0.005 mA 1 uA ±0.03% ±5 dgts

0.005 to 4 mA 1 uA ±0.03% ±5 dgts

4 to 20 mA 1 uA ±0.03% ±3 dgts

20 to 24 mA 1 uA ±0.03% ±5 dgts

V (Source) (Maximum Load 1 mA, Short Circuit Protection < 100 mA); V (Measure)

Range Resolution Accuracy of Reading

-3V to -0.005V 0.001V ±0.03% ±5 dgts

0.005 to 10V 0.001V ±0.03% ±5 dgts

10 to 15V

[10 to 24V for V (measure)]

Frequency (Source, 10 Vpp, 0V Offset, Square Wave, Duty Cycle = 50%)

Range (Hz) Input Resolution Accuracy

0.3 to 99.999 0.1 Hz 0.002Hz

10.00 to 999.99 0.1 Hz 0.02Hz

1000.0 to 9999.9 0.1 Hz 0.2Hz

10000 to 20000 1 Hz 2Hz

0.001V

±0.03% ±5 dgts

Voltage Peak to Peak for Sine Wave (Vpp, 0.3 to 20 KHz, 50% Duty Cycle, Sine Wave, 0V Offset)

Range (V) Resolution Accuracy of Reading

0.1 to 20V 0.001V 5% ±0.3V

Voltage Peak to Peak for Non-Sine Wave (Vpp, 0.3 to 20 KHz, 0V Offset)

Range (V) Resolution Accuracy of Reading

0.1 to 20V 0.001V 6% ±0.4V

Voltage Peak to Peak (Vpp, 0.3 to 20 KHz, 50% Duty Cycle, Square Wave, 0V Offset)

Range (V) Resolution Accuracy of Reading

1 to 20V 0.001V 6% ±0.4V

Voltage of Offset (Maximum Vpp < 20V)

Range (V) Resolution Accuracy of Reading

-5 to 5V 0.001V 5% ±0.5V ±5% x Vpp

Duty Cycle (%, Square Wave, 10 Vpp, 0.3 to 20 KHz)

Range Resolution Rise Time of Vpp Fall Time of Vpp

0 to 100% 1% 10μS max, 5μS max typical 15μS, 7.5μS typical

K-2

Temperature, Thermocouples (source and measure, 0.1°C & 0.1°F resolution, internal

U

cold junction compensation, thermocouple accuracy not included, 3 minutes after plugging
in thermocouples).

Thermocouple

Type

mV

Range Accuracy Range Accuracy

-200 to -150

-150 to 0

0 to 1000

1000 to 1370

-200 to -150

-150 to 0

0 to 1050

-200 to -150

-150 to 0
0 to 850

-200 to -150

-150 to 0
0 to 400

0 to 500

500 to 1760

-200 to 0

0 to 1300

-200 to 0
0 to 900

-200 to 0
0 to 600

600 to 800

800 to 1000

1000 to 1820

0 to 1800

1800 to 2310

-10 to 70 mV 0.05 mV -10 to 70 mV 0.05 mV

°C °F

2.0

1.2

0.8

1.2

2.0

1.0

0.7

1.5

0.9

0.7

1.5

1.2

0.8

1.8

1.5

1.5

0.9

0.9

0.7

1.1

0.7

2.2

1.8

1.4

1.0

1.5

-382 to -238

-238 to 32

32 to 1832

1832 to 2498

-382 to -238

-238 to 32

32 to 1922

-382 to -238

-238 to 32

32 to 1562

-382 to -238

-238 to 32
32 to 752

32 to 932

932 to 3200

-328 to 32

32 to 2372

-328 to 32

32 to 1652

-328 to 32

32 to 1112

1112 to 1472
1472 to 1832
1832 to 3308

32 to 3272

3272 to 4190

3.6

2.1

1.4

2.1

3.6

1.8

1.2

2.7

1.6

1.2

2.7

2.1

1.4

3.2

2.7

2.7

1.6

1.6

1.2

1.9

1.2

3.9

3.2

2.5

1.8

2.7

K

Specifications

SM

AC Adaptor: AC 110V, 60 Hz input; or AC 220V, 50/60 Hz input; DC 15V/0.5 A output
Operation Environment: 0 to 50°C (32 to 122°F), 85% RH
Storage Environment: -20 to 60°C (-4 to 140°F), 75% RH
Dimensions: 214 L x 98.7 W x 56 mm H (8.4 x 3.9 x 2.2")
Weight: 650 g (22.9 oz) (batteries included)

OMEGACARESM extended warranty program
is available for models shown on this page.
Ask your sales representative for full details
when placing an order. OMEGACARESM
covers parts, labor and equivalent loaners.

Extended Warranty

Program

To Order Visit omega.com/cl427 for Pricing and Details

Model No. Description

CL427

Comes complete with operator’s manual, carrying case, AC adaptor, certificate of calibration, USB cable, software CD, Type K thermocouple,
alligator clips, test leads, and rechargeable lithium battery (11.1 V/1600 mAh).

Ordering Example: CL427, multifunction calibrator.

Multifunction calibrator

K-3