Omega CL530 User guide

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User’s Guide

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CL530

4-20 Milliamp Loop Calibrator

M3863/0103

OMEGAnet®Online Service Internet e-mail

www.omega.com [email protected]

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®

®

®

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It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that
apply. OMEGA is constantly pursuing certification of its products to the European New Approach
Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

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WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 37 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month
grace period to the normal three (3) 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 but not limited to mishandling, improper interfacing, operation outside of design limits,
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 which wear are not warranted, including but not
limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use 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 it will be
as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE,
AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this order, whether based on contract, warranty, negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component upon which liability is based. In no event shall OMEGA be liable 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” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
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.

RETURN REQUESTS/INQUIRIES

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

ARRANTY 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 2003 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,

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,
for current repair charges. Have the following
information available BEFORE contacting OMEGA:

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

consult OMEGA

2. Model and serial number of the product, and

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

MODEL CL530 FIELD CALIBRATION PROCEDURE CONTINUED

Source mA Calibration:

Verify the Model CL530 is in source mA mode by press the SOURCE Button until mA SOURCE appears on the bottom
right side of the display.

Source mA:

LO Calibration:

1. Connect the Model CL530 terminals to a Current Meter.

2. Slide the EZ-Check switch to the LO Position indicated by displaying a LO on the left side of the
display.

3. Dial the Model CL530 so the meter reads 0.000mA.

4. Press the STORE/CLEAR button.

5. The display will flash STORED to confirm that the displayed value was stored.

HI Calibration:

1. Slide the EZ-Check switch to the HI position indicated by displaying a HI on the left side of the
display.

2. Dial the Model CL530 so the meter reads 20.000mA.

3. Press the STORE/CLEAR button.

4. The display will flash STORED to confirm that the displayed value was stored.

Two Wire Simulation Calibration:

Verify the Model CL530 is in Two Wire Simulation mode by press the SOURCE Button until mA 2W SIM appears
on the bottom right side of the display.

Two Wire Simulation:

LO Calibration:

1. Connect the Model CL530 terminals in series to a Voltage Source (Set at 10V) and Current Meter.

2. Slide the EZ-Check switch to the LO Position indicated by displaying a LO on the left side of the
display.

3. Dial the Model CL530 so the meter reads 4.000mA.

4. Press the STORE/CLEAR button.

5. The display will flash STORED to confirm that the displayed value was stored.

HI Calibration:

1. Slide the EZ-Check switch to the HI position indicated by displaying a HI on the left side of the
display.

2. Dial the Model CL530 so the meter reads 20.000mA.

3. Press the STORE/CLEAR button.

4. The display will flash STORED to confirm that the displayed value was stored.

Completion of Calibration:

Turn the Model CL530 off. Next time the unit is turned on the Model CL530 will be Calibrated and in normal
operational mode.

A.

EZ-Check Switch/EZ-Step Pushbutton

Slide the switch to select the user stored values for
calibration points. Press the button to adjust the output by
the user defined step size. Press and hold the button to

Basic Keypad Operations

UNITS Button

Press UNITS to change how current is displayed
 either in milliamperes or % of 4-20 mA.
Voltage is only displayed in Volts.

activate the auto step/ramp mode.

READ Button

Press READ button to change read modes. These
are:

Read Milliamps
Power and Measure 2-Wire Transmitter
Read Volts

STORE/CLEAR Button

In any source mode:

Press STORE/CLEAR to save the current
reading in the EZ-Check HI or LO position.
The EZ-Check switch must be set to HI or LO.
The display will flash STORED to confirm.

SOURCE/STEP SIZE Button

Press SOURCE to change source modes. These are:

Source Milliamps
2-Wire Transmitter Simulate

ON/OFF Button

Press ON/OFF to turn the Model CL530 on or off.

In any read mode:

Press STORE/CLEAR to clear the values saved
in the EZ-Check HI and LO positions. The
display will flash CLEARED to confirm.

EZ-Dial Knob

Turn the EZ-Dial knob to adjust the output
level. Press and turn to adjust 100X faster.

B.

EZ-Dial Knob

Adjust the output up and down with the EZ-Dial knob. The increment is 0.001 mA (or 0.01 % if display units
are % of 4-20 mA.) Press while turning to adjust 100X faster  0.100 mA (or 1.00 %.)

C.

EZ-Check Switch

The EZ-Check switch has three positions -- high, set, and low. Its position is shown at the left edge of the
display with HI and LO indicators. Neither indicator indicates the middle position. Use of the EZ-Check
switch depends on mode.

Source Modes:

Slide the EZ-Check switch to the HI and LO positions to recall the settings stored in those positions.
While in the HI and LO positions, dial the EZ-Dial

 knob to change the display. Press

STORE/CLEAR to save new settings in the HI and LO positions. The display will flash STORED to
confirm.
Hint: For faster calibrations, the position of the switch can be felt. This feature allows continuous
monitoring of the device being calibrated without looking back at the Model CL530 display. This is also
useful in poor lighting or under difficult operating conditions.

Read Modes:

In read modes, the Model
in

each mode. Slide the EZ-Check switch to the HI and LO positions to display the readings.

Press STORE/CLEAR to clear the readings. The display will flash CLEARED to confirm.

CL

530 calibrator records the maximum and minimum readings observed

By default, the Model CL530 has EZ-Check HI/LO Readings OFF. Refer to Model CL530
Configuration, section H.

D.

EZ-Step Pushbutton

The EZ-Step pushbutton is a feature only in source modes.



Press and hold the EZ-Step



EZ-Step

size. The EZ-Step direction is indicated on the display ( or ). Press the EZ-Dial knob

pushbutton for less than one second to cause the output to step up or down by the

to change the step direction.



Press the EZ-Step

pushbutton for more than one second to activate auto step/ramp mode. The Model CL530
will automatically step by the EZ-Step size. Press the EZ-Step pushbutton again to deactivate auto
step/ramp mode.



Stepping and auto step/ramp limits are defined by the EZ-Check

HI and LO settings. The step direction

changes when a limit is reached.

By default, the Model CL530 has EZ-Step OFF. Refer to Model CL530 Configuration, section H.

MODEL CL530 FIELD CALIBRATION PROCEDURE

Suggested Equipment:

1. Precision Current Meter with accuracy of ±0.008% at 20mA.

2. Precision Current Source with accuracy of ±0.008% at 20mA

3. Precision Voltage Source with accuracy of ±0.07% at 60V.

Enabling Calibration:

Install a fresh battery and allow one hour for the Model CL530 to stabilize to the ambient temperature. Remove the
battery cover and the six screws holding the housing together. While holding the Model CL530 face down in one hand,
carefully separate the top and bottom of the housing. Place the unit into calibration mode by holding down the ON/OFF
button and shorting the calibration via labeled on the PCB with tweezers. Verify the Model CL530 is in Calibration
mode by viewing the bottom Right of the LCD for the word CAL.

E.

To Change the EZ-Step

1. Press and hold the SOURCE/STEP SIZE button for more than ¾ of a second.

2. The display will indicate EZ-STEP SIZE.
Turn the EZ-Dial

3.

mA display - 0.001, 0.010, 0.100, 1.000, 4.000, 8.000
% display - 0.01, 0.10, 1.00, 10.00, 25.00, 50.00

4. Press the SOURCE/STEP SIZE button again return to the normal display.

Note: If the EZ-Step
CL

530 Configuration, section H.

To Change the EZ-Step

1.

Press the EZ-Dial

2. The display will change

EZ-Step Size and Direction

TM

Size:



knob to select other step sizes. The choices are:



option is turned off, the display will indicate EZ-STEP OFF. Refer to Model

TM

Direction:

knob.



to show the EZ-Step

direction selected ( or ).



Auto Step / RampF.

Auto step/ramp times are given in Table 1. In step modes (EZ-Step sizes 8, 4, and 1 mA or 50, 25 and 10 %)
the output will change in discrete steps. In ramp modes, the output is approximately continuous.

Table 1 assumes the default EZ-Check



LO/HI of 4/20 mA and scales ratiometrically with the EZ-Check



span. Soak Time does not change with EZ-Check span.

The Model CL530 will detect high loop resistance/low supply in step modes. In ramp modes, these error
conditions are not detected.

Table 1

Auto EZ-Step

8.000 mA 50.00 % 10 seconds (30 seconds) 20 seconds

STEP

Ramp

4.000 mA 25.00 % 10 seconds (50 seconds) 20 seconds

1.00 mA 1.9 seconds (34 seconds) 3.8 seconds

10.00 % 1.8 seconds (21 seconds) 3.6 seconds

1.00 %

0.10 %

0.100 mA

0.010 mA

0.01 %

0.001 mA



Size Step Time

Ramp Time

(4-20 mA or 0-100 %)

20 seconds
25 seconds
32 seconds
40 seconds
83 seconds

134 seconds

Soak Time

Read mA Calibration:

Verify the Model CL530 is in Read mA mode by pressing the READ Button until mA Read appears in the bottom right
corner of the display.

Read mA:

LO Calibration:

1. Connect the Model CL530 terminals to a Current Source.

2. Slide the EZ-Check switch to the LO Position indicated by displaying a LO on the left side of the
display.

3. Set the Current Source to 0.000mA

4. Press the STORE/CLEAR button.

5. The display will flash STORED to confirm that the displayed value was stored.

HI Calibration:

1. Slide the EZ-Check switch to the HI Position indicated by displaying a HI on the left side of the
display.

2. Set the Current Source to 20.000mA.

3. Press the STORE/CLEAR button.

4. The display will flash STORED to confirm that the displayed value was stored.

Read Voltage Calibration:

Verify the Model CL530 is in Read Volts mode by press the READ Button until V Read appears on the bottom right
side of the display.

Read Voltage Calibration:

LO Calibration:

1. Connect the Model CL530 terminals to a Voltage Source.

2. Slide the EZ-Check switch to the LO Position indicated by displaying a LO on the left side of the
display.

3. Set the Voltage Source to 0.000V.

4. Press the STORE/CLEAR button.

5. The display will flash STORED to confirm that the displayed value was stored.

HI Calibration:

1. Slide the EZ-Check switch to the HI Position indicated by displaying a HI on the left side of the
display.

2. Set the Voltage Source to 60.000V.

3. Press the STORE/CLEAR button.

4. The display will flash STORED to confirm that the displayed value was stored.

Specifications Continued

Miscellaneous th nominal 1 hour of operation left

Common Specifications for all current modes

Ranges 0.000 to 24.000 mA, -25.00 to 125.00% of 4-20 mA

Accuracy ± (0.012 % of Reading + 0.004 mA)

Temperature effect ± 50 ppm/°C of Range

Resolution(s) 0.001 mA and 0.01 %

Source/Power and Measure 2-Wire Tran smitter Specifications:

Loop compliance voltage 24 Volts

Loop drive capability at 20 mA for entire battery life

Miscellaneous itions are indicated by appropriate error display

Read mA Specifications:

Voltage burden 2V at 20 mA

Overload/Current limit protection 24 mA

Battery life 40 Hours

2-Wire Transmitter Simulation Spec ifications:

Voltage burden 2V at 20 mA

Overload/Current limit protection 24 mA

Loop voltage limits

Miscellaneous itions are indicated by appropriate error display

Voltage Read S pecifications:

Range

Accuracy ± (0.1 % of Reading ±0.1 V)

Temperature effect ± 200 ppm/°C of Reading

Resolution

Input resistance 1 MW

Battery life > 40 hour typical

Available Options:

Option:

AC adaptor

Carrying Case

Low battery indication wi

Over-voltage protection to 120 Vrms (rated for 30 seconds) or 240 Vrms (rated for 15

seconds)

Bar graph display with 1% resolution of 4-20 mA signal scale

High contrast graphic liquid crystal display with 0.45 (11.4 mm) high digits

1200 W

Open loop or out of compliance cond

Battery life in:

Source mode 18 hrs at 12mA typical (HART

Power measure 10 hrs at 12mA typical

®

protocol mode is a selectable option at turn on. HART® protocol mode places a

HART

250W resistor in series with the output

Selectable EZ-Step(s) for Source Mode/2-Wire Transmitter Simulation:

In mA mode: 0.001, 0.010, 0.100, 1.000, 4.000(default), 8.000 mA

% of 4-20 mA mode: 0.01, 0.10, 1.00, 10.00, 25.00(default), 50.00 %

nominal

Typical

nominal

2-60 VDC

Open loop or out of compliance cond

Battery life 40 hour typical

Selectable EZ-Step(s) for Source Mode/2-Wire Transmitter Simulation:

In mA mode: 0.001, 0.010, 0.100, 1.000, 4.000(default), 8.000 mA

% of 4-20 mA mode: 0.01, 0.10, 1.00, 10.00, 25.00(default), 50.00 %

0.00 to 60.00 VDC (with 2X over range)

0.01 V

Flashing indicator for over range

Part Number:

CL530-ADAPTOR

SC530

®

disabled)

G.

The Quick Reference Bar Graph indicates the input and output level to the Model CL530 in % of 4-20 mA
with 1% resolution. If the input or output signal is outside the normal operating range of the Model CL530
the Quick Reference Bar Graph is replaced by an error message (see section I for errors.)

H.

Auto Off

If Auto Off is ON, the unit will turn off after 30 minutes to save battery life, if there is no user activity. If
Auto Off is OFF the unit will stay on until it is turned off from the keypad. This is typically useful for
manual loading or continuous use.

EZ-Step

-



Quick Reference Bar Graph

Model CL530 Configuration

If EZ-Step is ON the step size is adjustable as described in the instructions. If EZ-Step is OFF the EZ­Step



pushbutton will be disabled and the step direction indicator will not be displayed.

®

Compatibility Mode -

HART

®

The Model CL530 has a HART
communicate using the HART
series with the output in both Source and Power Measure 2-Wire transmitter modes. This eliminates the
requirement of an external 250 W load resistor. This resistor is typically shown in connection diagrams and
manuals for HART

®

If HART
output in Source and Power Measure 2-Wire Tran smitter modes. The output compliance with HART
Compatibility Mode ON is 950 W at 20 mA.

®

If HART
increase the output compliance voltage to drive 1200 W at 20 mA.

®

devices.

Compatibility Mode is ON, a 250 W load resistor is automatically switched in series with the

Compatibility Mode is OFF there is no 250 W load resistor in series with the output. This will

compatibility mode. This mode is useful when the devices being powered

®

protocol. In this mode the Model CL530 connects a 250 W load resistor in

®

EZ-Check HI/LO Readings

If the EZ-Check HI/LO Readings option is ON, the highest and lowest readings will automatically be



saved in the HI and LO EZ-Check

positions.

If this option is OFF the HI and LO positions will show the current reading.

Factory Reset

If Factory Reset is ON, the unit will restore all factory defaults when the Model CL530 is turned OFF and
back ON. This will reset any changes made in the Model CL530 Configuration options, returning the unit
to its simplest factory configuration.

Instructions for Enabling and Disabling the Configuration options in the Model CL530

1. Turn the Model CL530 on.
Press the EZ-Dial

2.
displayed.
Select options by turning the EZ-Dial

3.

4. The option can be enabled or di

5. Turning the Model CL530 off to exit configuration.



knob while the PRESS EZ-DIAL KNOB FOR CONFIGURATION message is



knob until the arrow points to the desired option.

sabled by tapping the EZ-Dial



knob.

Error Conditions

Source Milliamps:

HIGH W flashes in place of bar graph

Power Measure:

CURRENT LIMITED flashes in place of bar graph

2-Wire Transmitter Simulate:

LOW SUPPLY flashes in place of bar graph

Read Milliamps:

CURRENT LIMITED flashes in place of bar graph

Read Volts:

OVERRANGE flashes in place of bar graph

Source Mode

Receiver

Tran smi tte r I nput

(Sensor)

(Process Signal)

(Simulated Input)

Source mode uses internal power to supply current from 0.000-24.000 mA into as much as 1200 W (with HART resistor disabled)

until the end of useful battery life. The calibrator will indicate HIGH W

+ IN - REF +OUT-

Typ ic al
2-Wire

Tran sm itt er

Power Supply

0 to 60 VDC

®

 if connected improperly. The three-position EZ-Check

switch provides instant zero and span calibration outputs. EZ-Checks from 0-24 mA can be stored in the z ero and span switch

positions. The output is adjusted in 0.001 or 0.100 mA increments (0.01 or 1.00 % in percent display units) with the EZ-Dial knob.

Step the output by pressing the EZ-Step button. Six different user-selected step sizes are available. Hold the EZ-Step button to

activate hands-free auto step/ramp function.

2-Wire Transmitter Simulation Mode

Receiver

Transmitter Input

(Sensor)
(Process Signal)
(Simulated Input)

+ IN - RE F +OUT-

Typ ic al

2-Wire

Tra nsm itt er

Read Mode

Receiver

Transmitter Input

(Sensor)

(Process Signal)

(Simulated Input)

The Model CL530 can read loop currents from 0-24 mA. The Model CL530 limits current in read mode to less than 24 mA to protect
the devices in the loop from over voltage or over current conditions.

+ IN - RE F +OUT-

Typ ic al
2-Wire

Tra nsm itt er

Power Supply

0 to 60 VDC

Measure DC Volts Mode

Receiver

Transmitter Input

(Sensor)

(Process Signal)

(Simulated Input)

+ IN - RE F +OUT-

Typ ic al
2-Wire

Tra nsm itt er

Power Supply

0 to 60 VDC

The Model CL530 can simulate a 2-wire transmitter in the 4-20 mA process loop. The calibrator will indicate LOW SUPPLY if
improperly connected. The EZ-Check switch and EZ-Dial knob allow rapid and fine control of loop current. The EZ-Step button
and hands-free auto step/ramp function allow a complete check of calibration points.

Power and Measure Transmitter Mode

Receiver

Transmitter Input

(Sensor)
(Process Signal)
(Simulated Input)

The Model CL530 supplies 24 Volts to the transmitter and displays the output in mA or % on the Model CL530 display. If the Model
CL530s HART
proper communication by HART devices. This eliminates the requirement of connecting a separate 250 W load resistor in the field
as indicated in field hookup diagrams of HART

®

protocol mode is selected, an internal 250 W load resistor is connected in series with the output as specified for

®

+ IN - RE F +OUT-

Typ ic al

2-Wire

Tra nsm itt er

®

enabled devices.

Power Supply

0 to 60 VDC

Power Supply

0 to 60 VDC

The Measure DC Volts Mode reads voltage from 0.00 to ±60.00 VDC. This mode can be used to check loop power, measure voltage
drop across 250W load loop resistors, 1 to 5 V signals, I/V converters and battery voltages.

Specifications

General Specifications:

(Unless otherwise indicated all specifications are rated from a nominal 23 °C, 70 % RH for 1 year from calibration)

Operating Temperature Range

Storage Temperature Range

Relative Humidity Range

Battery

-20 to 60 °C (-5 to 140 °F)

-30 to 60 °C (-22 to 140 °F)

10 %RH90 % (0 to 35 °C), Non-condensing

10 % RH 70 % (35 to 60 °C), Non-condensing

9V Alkaline

Optional 120 VAC 50/60 Hz AC adaptor available