Omega CL110 User guide

User’s Guide

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e-mail: [email protected]

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NORWALK, CT

SM

CL110

Precision Loop Calibrator

omega.com [email protected]

Servicing North America:

U.S.A.
Headquarters:

Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: [phone] Fax: [phone]
e-mail: [email protected]

Omega Engineering, Inc.
Toll-Free: 1-800-826-6342 (USA & Canada only)

For Other Locations Visit omega.com/worldwide

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves
the right to alter specifications without notice.

Introduction

The OMEGA CL110 mA (loop) calibrator is designed to be simple to
use and to offer the highest accuracy of any loop calibrator in it’s
class.

The calibrator supports the following functions:

• Current measurement and sourcing, including selectable 24V
supply

• V oltage measurement

• V alve test capability

• Selectable HART 250Ω loop resistor

• Output step and ramp

The calibrator has the following features:

• Large easy to read display for measurements and data entry

• Digit

• Interactive menus

• Input and output jacks protected by self resetting fuses

1.1 Customer Service

al knob with selectable decade control for quick and easy

data entry

providing protection to 240VAC

OMEGA Engineering

Tel: [phone]

Fax: [phone]

www.omega.com

email: [email protected]

1.2 Standard Equipment

Check to see if your calibrator is complete. It should include:

• Calibrator

• x6 AAA batteries (installed)

• T est leads

- The CL110 is supplied wit
clips installed

• Owner’s Manual

• Certified Certificate

h one set of leads with alligator

1

1.3 Safety information

Symbols Used

The following table lists the International Electrical Symbols. Some or
all of these symbols may be used on the instrument or in this
manual.

Symbol Description

AC (Alternating Current)

AC-DC

Battery

CE Complies with European Union Directives

DC

Double Insulated

Electric Shock

Fuse

PE Ground

Hot Surface (Burn Hazard)

Read the User’s Manual (Important Information)

Off

On

Canadian Standards Association

2

The following definitions apply to the terms “Warning” and “Caution”.

•“Warning”identifiesconditionsandactionsthatmayposehazards

to the user.

•“Caution”identifiesconditionsandactionsthatmaydamagethe

instrument being used.

Usethecalibratoronlyasspecifiedinthismanual,otherwiseinjury

and damage to the calibrator may occur.

Warning

To avoid possible electric shock or personal injury:

•Donotapplymorethantheratedvoltage.Seespecificationsfor

supported ranges.

•Followallequipmentsafetyprocedures.

•Nevertouchtheprobetoavoltagesourcewhenthetestleadsare

plugged into the current terminals.

•Donotusethecalibratorifitisdamaged.Beforeyouusethe

calibrator, inspect the case. Look for cracks or missing plastic. Pay
particular attention to the insulation surrounding the connectors.

•Selecttheproperfunctionandrangeforyourmeasurement.

•Makesurethebatterycoverisclosedandlatchedbeforeyou

operate the calibrator.

•Removetestleadsfromthecalibratorbeforeyouopenthebattery

door.

•Inspectthetestleadsfordamagedinsulationorexposedmetal.

Check test leads continuity. Replace damaged test leads before
you use the calibrator.

•Whenusingtheprobes,keepyourfingersawayfromtheprobe

contacts. Keep your fingers behind the finger guards on the
probes.

•Connectthecommontestleadbeforeyouconnectthelivetest

lead. When you disconnect test leads, disconnect the live test lead
first.

•Donotusethecalibratorifitoperatesabnormally.Protectionmay

be impaired. When in doubt, have the calibrator serviced.

•Donotoperatethecalibratoraroundexplosivegas,vapor,ordust.

•Disconnecttestleadsbeforechangingtoanothermeasureor

source function.

3

•Whenservicingthecalibrator,useonlyspecifiedreplacementparts.

•Toavoidfalsereadings,whichcouldleadtopossibleelectricshock
orpersonalinjury,replacethebatteryassoonasthebattery

indicator appears.

•Toavoidaviolentreleaseofpressureinapressurizedsystem,shut

off the valve and slowly bleed off the pressure before you attach
the pressure module to the pressure line.

Caution

To avoid possible damage to calibrator or to equipment under test:

•Usetheproperjacks,function,andrangeforyourmeasurementor

sourcing application.

4

2. Calibrator Interface and Operation

Mode

Step / Ramp Enable

Backlight

On / Off

Figure 1 is typical of the main display for all operating modes. It
shows the present measurement or output value. The individual
operating modes are described below.

Use the MENU/EXIT key to display the main menu described in
section 3 to select the primary operating mode of the calibrator or to
access the calibrator setup functions.

In output mode:

 •Presstheknobtomovethedecadecursor.

 •Rotatetheknobtoincrementordecrementtheoutputinsteps

indicated by the selected decade.

 •Usethe3percentkeystodirectlysettheoutputtopreset

values.

 •Usethestep/rampkeytoselectandstoptheseadvanced

modes which are described in section 5.1.

Precision Loop

Source 0.00%

Calibrator

4.000mA

100%

25%

MENU

Menu
Press to Enter Setup Menu
Press Again to Exit

0%

EXIT

Figure 1

Simultaneous % Display
4mA = 0.00%
20mA = 100.00%

Cursor

100% Key: Sets Output to 20mA
25% Key: Steps 4, 8, 12, 16, 20mA

0% Key: Sets Output to 4mA

Digital Knob Sets Output Value
Press to Move Cursor

5

2.1 Milliamp Source

In the mA Source mode the calibrator outputs a signal from 0 to
24mA into a load of up to 1000 ohms (750 ohms if the internal HART
resistor is switched on).

Figure 2 shows the main display and typical connections for this
mode.

4-20mA INPUT DEVICE
RECORDER/INDICATOR
SCADA SYSTEM ETC.

(+)

4 to 20mA

(–)

Precision Loop

Source 0.00%

Calibrator

4.000mA

100%

25%

0%

MENU

EXIT

Figure 2

•Presstheknobtomovethedecadecursor.

•Rotatetheknobtoincrementordecrementtheoutputinsteps

indicated by the selected decade.

•Usethe3percentkeystodirectlysettheoutputtopresetvalues.

•Usethestep/rampkeytoselectandstoptheseadvancedmodes

which are described in section 5.1. When automatic step or ramp
is active one of the following is shown in the lower left corner:

Automatic step:

Automatic ramp:

6

∧

•PressMENU/EXITtoenterthemainmenudescribedinsection3.

•Thetext‘ValveTest’isshowninthelowercenterwhenthevalve

test function has been enabled on the Setup Menu, section 4.3.

Valvetestisdescribedinmoredetailinsection5.2.

•Thetext‘250Ω’ text is shown in the lower right corner when the

HART resistor has been enabled on the Setup Menu, section 4.4.

2.2 Milliamp Simulate

In the mA Simulate mode the calibrator functions like a 2-wire
transmitter by controlling the loop current from an external power
supply. This function is a great way to test a loop with the transmitter
removed.

Figure 3 shows the main display and typical connections for this
mode.

(+)

POWER SUPPLY

30 VDC MAX

(–)

(+)

4-20mA

INPUT DEVICE

(–)

4 to 20mA

Precision Loop

Simulate 0.00%

Calibrator

4.000mA

100%

25%

0%

MENU

EXIT

Figure 3

•Presstheknobtomovethedecadecursor.

•Rotatetheknobtoincrementordecrementtheoutputinsteps

indicated by the selected decade.

•Usethe3percentkeystodirectlysettheoutputtopresetvalues.

•Usethestep/rampkeytoselectandstoptheseadvancedmodes

which are described in section 5.1. When automatic step or ramp
is active one of the following is shown in the lower left corner:

7

Automatic step:

Automatic ramp:

∧

•PressMENU/EXITtoenterthemainmenudescribedinsection3.

•Thetext‘ValveTest’isshowninthelowercenterwhenthevalve

test function has been enabled on the Setup Menu, section 4.3.

Valvetestisdescribedinmoredetailinsection5.2.

•Thetext‘250Ω’ text is shown in the lower right corner when the

HART resistor has been enabled on the Setup Menu, section 4.4.

2.3 Milliamp Measure without 24V power

In the mA Measure mode, the calibrator displays the loop current.

Figure 4 shows the main display and typical connections for this
mode.

(+)

4-20mA

OUTPUT DEVICE

(–)

4 to 20mA

Precision Loop

Measure 0.00%

Calibrator

4.000mA

MENU

EXIT

Figure 4

•PressMENU/EXITtoenterthemainmenudescribedinsection3.

•Thetext‘250Ω’ text is shown in the lower right corner when the

HART resistor has been enabled on the Setup Menu, section 4.4.

8

100%

25%

0%

2.4 Milliamp Measure with 24V power

InthemAMeasurewith24Vmode,thecalibratoroutputs24VDC

while displaying the loop current. The mode is useful for powering a
transmitter without the need for a separate power supply.

Figure 5 shows the main display and typical connections for this
mode.

Precision Loop

Measure 24V 0.00%

Calibrator

4.000mA

MENU

EXIT

100%

25%

0%

Figure 5

•PressMENU/EXITtoenterthemainmenudescribedinsection3.

•Thetext‘250Ω’ text is shown in the lower right corner when the

HART resistor has been enabled on the Setup Menu, section 4.4.

2.5 Volts Measure

IntheVoltsMeasuremode,thecalibratordisplaystheloopvoltage.

Figure 6 shows the main display and typical connections for this
mode.

•PressMENU/EXITtoenterthemainmenudescribedinsection3.

9

(+)

VOLTAGE

OUTPUT DEVICE

(–)

Precision Loop

Measure

10.000V

MENU

EXIT

Figure 6

3. Main Menu

The Main Menu is used to select the primary operating mode of the
calibrator or to access the calibrator setup functions.

Calibrator

100%

25%

0%

mA Source
mA Simulate
mA Measure

mAMeasurewith24V
VoltsMeasure

Calibrator Setup Menu

Rotate the knob to select an action by moving the reverse video
highlight up and down. Press the knob to perform the selected
action. Press MENU/EXIT to return to the main display without
performing an action.

The first five actions change the operating mode accordingly and
return to the main display described in section 2.

The “Calibrator Setup Menu” action is described in section 4.

10

4. Calibrator Setup Menu

The calibrator setup menu consists of two screens. The second

screenisreachedbyselecting‘OtherParameters’onthefirstscreen.

Auto Ramp Time
Auto Step Time
ValveTest
HART 250Ω Resistor
Other Parameters

mA Span
Contrast
Auto Shutdown Time

Rotate the knob to select an action by moving the reverse video
highlight up and down. Press the knob to perform the selected
action. Press MENU/EXIT to return to the main display without
performing an action.

4.1 Setting Auto Ramp Time

Auto Ramp Time

10 SEC.

Press & hold to Save

This function sets the full scale ramp time for the mA ramp feature
described in more detail in section 5.1. The value can be set from 5
to 300 seconds.

Rotatetheknobtoadjustthevalue.Pressandholdtheknobtosave

it. Press MENU/EXIT to restore the previous value and return to the
main display.

11

4.2 Setting Auto Step Time

Auto Step Time

10 SEC.

Press & hold to Save

This function sets the step interval time for the mA Auto Step feature
described in more detail in section 5.1. The value can be set from 5
to 300 seconds.

Rotatetheknobtoadjustthevalue.Pressandholdtheknobtosave

it. Press MENU/EXIT to restore the previous value and return to the
main display.

4.3 Enabling Valve Test

Valve Test Enable

OFF ON

This function enables and disables the valve test feature described in
more detail in section 5.2.

Rotate the knob to move the reverse video highlight to the desired
selection. Press the knob to save the highlighted selection. Press
MENU/EXIT to restore the previous selection and return to the main
display.

12

4.4 Enabling the Hart Resistor

HART Resistor Enable

OFF ON

This function enables and disables the Hart resistor described in
more detail in section 5.3.

Rotate the knob to move the reverse video highlight to the desired
selection. Press the knob to save the highlighted selection. Press
MENU/EXIT to restore the previous selection and return to the main
display.

4.5 Selecting mA Span

mA Span Selection
4 to 20 mA
0 to 20 mA

This function selects the mA span used to calculate the percent of
span field on the main display, and to set the value used by the 0%
key.

Rotate the knob to move the reverse video highlight to the desired
selection. Press the knob to save the highlighted selection. Press
MENU/EXIT to restore the previous selection and return to the main
display.

4.6 Contrast Adjustment

Contrast

Sample normal video

Sample reverse video

This function sets the display contrast.

Rotatetheknobtoadjustthecontrast.Therangeofvaluesisshown

by the bar graph, with higher contrast shown by a longer bar. The
sample normal and reverse video text lines allow evaluation of both

13

text modes. Press the knob to save the contrast value. Press MENU/
EXIT to restore the previous selection and return to the main display.

4.7 Configuring Auto Shutdown

Auto Shutdown Time

10 MIN.

This function sets or disables the time before the unit automatically
shuts down if the keypad is not used. The value can be set to

‘Disabled’,orfrom1to30minutes.

Rotatetheknobtoadjustthevalue.Pressandholdtheknobtosave

it. Press MENU/EXIT to restore the previous value and return to the
main display.

5. Advanced Features

The calibrator has several advanced features that are available
through the Calibrator Setup Menus. How the features are enabled
and what they do is described below.

5.1 Step and Ramp Operation

The calibrator has several unique features that are helpful aids when
doing milliamp calibrations.

The percent keys allow the user to set the milliamp output to 0% of
span, 100% of span, or step it by 25% of span.

The “Step/Ramp” key allows hands free operation by automatically
stepping or ramping the milliamp output from 0% to 100% and back
continuously.

The 100% value is always 20 mA, but the 0% value may be 0 mA or 4
mA depending on the mA span setting described in section 4.5. The
25% step size is either 5 mA or 4 mA accordingly.

5.1.1 Manual Stepping

1. Use the main menu to set the calibrator to source or simulate

current.

2. Press the “0%” key to set the output to 0% of span.

3. Press the “100%” key to set the output to 100% of span.

14

4. Press the “25%” key to step the output in 25% of span
increments, from 0% of span to 100% of span and back.

5.1.2 Automatic Stepping and Ramping

1. Use the main menu to set the calibrator to source or simulate
current.

2. The calibrator has separate Auto ramp and step times. Use the
menu system to set the ramp or step time as described in
section 4.1 or 4.2.

3. Press the “Step/Ramp” key once to continually step the output
from 0% of span to 100% of span and back in increments of 25%
of span at the specified interval.

Press the “Step/Ramp” once more to go to auto ramp.

Press one of the percent keys, or the “Step/Ramp” twice more, to

turn off the auto step and ramp.

4. Press the “Step/Ramp” key twice to continually ramp the output
from 0% of span to 100% of span over the specified interval, and
then back over the specified interval.

Press one of the percent keys, or the “Step/Ramp” once more, to

turn off the auto step and ramp.

5.2 Valve Test

The calibrator has a valve test mode for verifying proper operation of
valves. In valve test the user can step the output to the following
values: 3.8 mA, 4.0mA, 4.2mA, 8.0 mA, 12.0 mA, 16.0 mA, 19.8 mA,

20.0 mA, 20.2 mA, and back.

The valve test mA values are not affected by the mA span setting
described in section 4.5

1. Use the main menu to set the calibrator to source or simulate
current.

2. If valve test is not enabled, use the menu system to enable it as
described in section 4.3.

3. Press the “Step/Ramp” key or the “25%” key to step the output
to verify the proper valve operation.

4. Use the menu system to disable valve test when done.

5.3 Hart 250Ω Resistor

The calibrator has the ability to insert a 250Ω resistor in series with
the power supply in order to facilitate the use of a Hart
communicator. The Hart resistor is enabled through the menu
system as described in section 4.4.

15

6. Maintenance

6.1 Replacing Batteries

Replace batteries as soon as the battery indicator turns on to avoid
false measurement. If the batteries discharge too deeply the CL110
will automatically shut down to avoid battery leakage.

Note: Use only AAA size alkaline, lithium batteries, or rechargeable
NiMh cells.

6.2 Cleaning the Unit

Warning

Toavoidpersonalinjuryordamagetothecalibrator,useonlythe

specified replacement parts and do not allow water into the case.

Caution

To avoid damaging the plastic lens and case, do not use solvents or
abrasive cleaners. Clean the calibrator with a soft cloth dampened
with water or water and mild soap.

6.3 Fuse Protection

The CL110 is protected with an internal polyfuse against overcurrent
conditions. The fuse will automatically reset, usually within a few
seconds. Do not attempt to open the unit and troubleshoot. This will
void the product warranty.

16

7. Specifications

Functions: mA source, mA simulate, mA read, mA read/

loop power, and volts read.
Ranges: mA (0 to 24mA) and Volts (0 to 30VDC)
Resolution: 1uA on mA ranges and 1mV on voltage range
Accuracy: 0.01% +/- 2LSD all ranges (@23° +/- 5°C)
Operating Temp Range: -10°C to 55°C
Humidity Range: 10 to 95% non-condensing
Stability: 20ppm of F.S. /°C from -10°C to 18°C and 28°C

to 55°C
Display: 128 x 64 pixels, LCD Graphic w/backlight, .34”

high digits
Power: 6AAA alkaline, lithium, or NiMH batteries
Battery Life: ≥ 40 hours continuous use (measure mode)
Loop Compliance

Voltage:
Loop Drive Capability: 1200Ω without HART resistor, 950 Ω with HART

Over-Voltage
Overload Current

Protection:
EMC: EN61326 Annex A (Portable Instruments)
Dimensions (LxWxD): 6” x 3.6” x 1.3” (15 cm x 9 cm x 3 cm)
Weight: 9.5 ounces (0.3 kg)
Included Accessories: Traceable calibration certificate with data,

Protection: 240VAC

24VDC @ 20mA

resistor

28mA DC

batteries, test leads, and manual

17

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace
period to the normal one (1) year product warranty to cover handling and shipping time. This ensures
that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,
including
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggesti ons on the u se of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for
any damages that result from the use of its products in accordance with information provided
by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the
company
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPO SE ARE HEREBY DISCLAIMED. LI MITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with resp ect to this order, whether based on contract, warranty, neg ligence,
indemnification, stric t liability or otherwise, shall not exceed the purchase price of the
co mpone nt upon which li abi lity i s based. In no eve nt sh all OMEGA be lia bl e for
consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component”
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or
activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility
as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify
OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the
Product(s) in such a manner.

but not limited to mishandling, improper interfacing, operation outside of design limits,

will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR

under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE

RETURN REQUESTS/INQUIRIES

RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR)
NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING
DELAYS). The assigned AR number should then be marked on the outside of the return package and on any
correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.

FOR WARRANTY RETURNS, please have the
following information available BEFORE contacting
OMEGA:

1. Purchase Order number under which the product
was PURCHASED,

2. Model and serial number of the product under
warranty, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our
customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2017 OMEGA ENGINEERING, INC. All rights reserved. T his documen t may not be copie d, photocop ied,

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior
written consent of OMEGA ENGINEERING, INC.

FOR NON-WARRANTY REPAIRS, consult
OMEGA for current repair charges. Have
the following information available BEFORE
contacting OMEGA:

1. Purchase Order number to cover the COST
of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems
relative to the product.

19

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

Shop online at omega.com

TEMPERATURE

Thermocouple, RTD & Thermistor Probes, Connectors,

Panels & Assemblies

Wire: Thermocouple, RTD & Thermistor
Calibrators & Ice Point References
Recorders, Controllers & Process Monitors
Infrared Pyrometers

PRESSURE, STRAIN AND FORCE

Transducers & Strain Gages
Load Cells & Pressure Gages
Displacement Transducers
Instrumentation & Accessories

FLOW/LEVEL

Rotameters, Gas Mass Flowmeters & Flow Computers
Air Velocity Indicators
Turbine/Paddlewheel Systems
Totalizers & Batch Controllers

pH/CONDUCTIVITY

pH Electrodes, Testers & Accessories
Benchtop/Laboratory Meters
Controllers, Calibrators, Simulators & Pumps
Industrial pH & Conductivity Equipment

SM

DATA ACQUISITION

Communications-Based Acquisition Systems
Data Logging Systems
Wireless Sensors, Transmitters, & Receivers
Signal Conditioners
Data Acquisition Software

HEATERS

Heating Cable
Cartridge & Strip Heaters
Immersion & Band Heaters
Flexible Heaters
Laboratory Heaters

ENVIRONMENTAL
MONITORING AND CONTROL

Metering & Control Instrumentation
Refractometers
Pumps & Tubing
Air, Soil & Water Monitors
Industrial Water & Wastewater Treatment
pH, Conductivity & Dissolved Oxygen Instruments

M5295/0217