Meriam M1004, M1000 User Manual

10920 Madison Ave.
Cleveland | Ohio | 44102 | USA

+ 1 216 281 1100

Meriam.com
[phone]

A trusted leader in measurement
and calibration solutions.

User Manual

M1004 Digital Calibrator

Copyright © 2018 Meriam®

9R693-IR October 2018

Contents

M Digital Calibrator ........................................................................................................................1

General Information ................................................................................................................................... 4

Notification Statements ...................................................................................................4

Glossary ...................................................................................................................................... 5

General warnings and cautions .......................................................................................................6

Preventing injury ..................................................................................................................6

Safety symbols .......................................................................................................................6

Sample label for General Purpose digital calibrators ................................7

Fire or explosion hazard ..................................................................................................7

For General Purpose Series .........................................................................................7

Do not exceed pressure limits .................................................................................... 8

Sensors ................................................................................................................................................................. 9

Customer calibration ............................................................................................................................. 11

Calibrate the M1004 by using the keypad: ..................................................... 11

1. User Zero ............................................................................................................................11

2. Restore Factory Calibration ................................................................................. 13

3. User Span (Respan) ...................................................................................................13

Digital Calibrator .......................................................................................................................................15

Battery ....................................................................................................................................... 15

Batteries ...................................................................................................................................15

The display ............................................................................................................................. 17

Keypad: Description of the keys ............................................................................ 18

The backlight ........................................................................................................................ 20

Measurement units .......................................................................................................... 21

Auto O (Automatic shut o) ...................................................................................21

What does the Zero (ø) key do? ............................................................................. 22

Specifications ..............................................................................................................................................23

Sensors: type and range .............................................................................................. 23

Temperature ..........................................................................................................................23

Relative Humidity .............................................................................................................. 24

Vibration ..................................................................................................................................24

Ingress specifications .................................................................................................... 24

Altitude specifications ................................................................................................... 24

Keypad ...................................................................................................................................... 24

Media Compatibility ........................................................................................................ 24

Battery Type .......................................................................................................................... 24

Dimensional specifications ........................................................................................ 25

Weight .......................................................................................................................................25

Enclosure ................................................................................................................................25

Maintenance and cleaning ................................................................................................................26

Cleaning ................................................................................................................................... 26

Prepare the digital calibrator for storage ......................................................... 26

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Help ....................................................................................................................................................................... 27

Register your product .................................................................................................... 27

Find downloads and documents ...........................................................................27

Meriam Contact Information ........................................................................................................... 28

Contact us .............................................................................................................................. 28

Repair or Calibration .......................................................................................................29

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General Information

Notification Statements

Disclaimer

Every precaution has been taken in the preparation of this
manual. Nevertheless, Meriam assumes no responsibility for
errors or omissions or any damages resulting from the use of
the information contained in this publication, including, without
limitation, incidental, special, direct or consequential damages.
MERIAM MAKES NO REPRESENTATIONS OR WARRANTIES
WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF
THE CONTENTS HEREOF AND SPECIFICALLY DISCLAIMS ANY
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. Meriam reserves the right to
revise this publication and to make changes from time to time in
the content hereof without obligation to notify any person of such
revision or changes.

In no event shall Meriam be liable for any indirect, special,
incidental, consequential, or punitive damages or for any lost
profits arising out of or relating to any services provided by
Meriam or its ailiates.

It is not possible for Meriam to identify all foreseeable uses or
misuses, therefore all persons involved in commissioning, using,
or maintaining this product must satisfy their self that each
intended application is acceptable.

Copyright

This publication is proprietary to Meriam and no ownership
rights are transferred. Neither this manual, nor any of the material
contained herein, may be reproduced without the prior written
consent of Meriam.

Trademark information

Design Patent D769,141 for the digital calibrator’s LCD display.

All other trademarks are the property of their respective owners.

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Glossary

Words and phrases with their definitions or explanations.

Words &
phrases

Blinking

FS
Home

Key and
button

Isolated

Customer
Calibration

Definitions or explanations

• It indicates the active edit field on an edit
screen.

• It indicates the displayed value is not actively
changing (like Hold or stopped Test).

• FS is the abbreviation of Full Scale.

• Home is the first screen that displays after
turning on the digital calibrator. It’s the screen
with measurements and units on it.

• After you press the Home key in many other
screens, the digital calibrator returns you to
Home.

• A key refers to hardware push-buttons on the
keypad that you can press.

• A button refers to an area in meriSuite CG that
you can tap or click to select functions.

• The word isolated refers to the sensing
element being separated from the media. It
is commonly used in the phrases Absolute
Isolated (AI) pressure and Compound Isolated
(CI) pressure.

• Customer calibration refers to any calibration
done outside of Meriam with non-Meriam
traceability.

• Customer calibration includes: Multipoint
calibration or adjustment.

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DANGER

!

WARNING

CAUTION

NOTICE

General warnings and cautions

Preventing injury

Failure to follow all instructions could result in injury:

▪ Read the entire manual before using the digital calibrator.
▪ Understand the contents before using the digital calibrator.
▪ Follow all safety warnings and instructions provided with this

product.

Safety symbols

The following table defines the safety symbols, signal words,
and corresponding safety messages used in the manual. These
symbols:

▪ Identify potential hazards.
▪ Warn you about hazards that could result in personal injury or

equipment damage.

Safety symbols Explaining the symbols

This is the Read directions before using
symbol. This symbol indicates that you
must read the instruction manual.

Read directions

before using

Indicates a potentially hazardous situation
which, if not avoided, will result in death or
serious injury.

!

!

Indicates a potentially hazardous situation
which, if not avoided, could result in death
or serious injury.
Indicates a potentially hazardous situation
which, if not avoided, could result in minor
or moderate injury.
Indicates information essential for
proper product installation, operation or
maintenance.

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DANGER

!

Sample label for General Purpose digital
calibrators

All M1004 Series models are available for general-purpose use.

General Purpose (GP) versions are identified by the name plate
located on the rear of the unit under the protective rubber boot. A
sample of the General Purpose name plate is shown below:

General Purpose

!

WARNING

For use only
in non-hazardous
locations.

Refer to manual for use and
safety precautions.

Operating Temperature:
–10 ºC < Ta < 50 ºC

Four 1.5 V alkaline AA batteries

For repair or calibration |

Meriam | 10920 Madison Avenue
Cleveland |Ohio | USA | 44102

USA

| designed|engineered|assembled

Meriam.com

(800)817-7849

+ 1 2162811100

Fire or explosion hazard

▪ Do not use General Purpose versions in hazardous areas.
▪ Do not use General Purpose versions in areas that may

contain flammable gas or vapors, combustible dusts or
ignitable fibers where an unintended spark can cause a fire or
explosion.

For General Purpose Series

!

CAUTION

Substitution of components may impair operation and safety.

▪ Disconnect power before servicing.
▪ Do not power the digital calibrator with a combination of new

and old batteries.

▪ Do not power the digital calibrator with a combination of

batteries from dierent manufacturers.

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WARNING

Do not exceed pressure limits

!

▪ Do not exceed the Pressure Limits listed in the Specifications

section of this manual.

▪ Failure to operate within the specified pressure limit could

result in minor or moderate injury.

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NOTICE

Sensors

Use two wrenches to install or remove pressure
connections

Connection: 1/8” female NPT, 316L SS.

▪ Always use a 3/4 in. wrench on the pressure manifold when

you install or remove the 1/8 in. NPT fitting.

▪ Applying torque to the manifold can damage the plastic

enclosure and voids the warranty.

▪ Do not over tighten.

Carefully equalize the pressure

Avoid these two issues with dierential sensors:

1. Connecting pressure to the incorrect pressure port on DN or
DI dierential pressure modules may cause damage to the
pressure sensor.

2. Applying pressure to either port before both connections are
made.

Apply pressure to both dierential ports at the same time.

Note: See Overrange limit in the section called Specifications
concerning overrange pressure limits. If over pressure damage
occurs, you must return the digital calibrator to the factory for
sensor replacement.

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Sensor manifold types

ZM1004-CNXXXX

ZM1004-DNXXXX

ZM1004-ANXXXX

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Customer calibration

Calibrate the M1004 by using the keypad:

You can calibrate the digital calibrator in the field for these three
types of calibration:

1. User Zero. (Zero key)

2. Restore Factory Calibration. (RESTORE FACTORY CAL)

3. User Span (RESPAN).

1. User Zero

How to zero Absolute Sensors

Overview of the zeroing Absolute Sensors

The digital calibrator is a stable and precise instrument. However,
on occasion the digital calibrator should have a new zero taken.
The new zero removes a zero drift that can occur after the digital
calibrator was last zeroed. The digital calibrator can be zeroed
only if the new applied zero is within ± 1 % FS of the original
factory calibration zero. This prevents accidental zeroing at
atmospheric pressure or other relatively high pressures. If the
digital calibrator is outside this limit, the calibrator cannot zero.

1. Referenced to Absolute Zero - This traditional and preferred
method takes a snapshot of the measured pressure when a
vacuum of less than 100 microns Absolute is applied to the
sensor.

2. Restore Factory Zero - This method restores the calibration
curve to the original zero taken at the factory.

Note: This feature is intended for comparison purposes, and
should not be used for real pressure measurement. This feature
does not compensate for any zero drift.

3. User Defined Oset (Zero) - With this method, you can enter
any pressure value when a known reference is applied (for
example, the local barometer). The digital calibrator compares
its actual measured value with the entered value, and calculate
a new zero reference based on the oset.

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Steps for zeroing Absolute Sensors

You can zero the digital calibrator in one of three ways. The
following may appear in a dierent order depending on which
arrow key you press. When an absolute sensor displays on-screen
as P1 or P2, press the Zero key to see one of the three sets of
characters below and the following three messages

On-screen
message

TAP  TO
CHOOSE REF
ARROWS TO
CHANGE REF

X Cancels

ab5 0

dflt

u5Er 0

Explanations

• Tapping the Accept key selects the displayed
reference.

• Tapping an Arrow key changes the displayed
reference.

• Tapping the Cancel key cancels the zero
request.

• This is the on-screen abbreviation for

Absolute Zero.

• This is the on-screen abbreviation for Default.

• If you want to restore the Factory Zero on a
sensor, press the Accept key when you see
these characters appear.

• This refers to User Defined Oset (Zero). You
can set an absolute reference point other than
zero.

How to zero DN, DI, or CI sensors

1. Disconnect from a pressure source and vent the pressure port
to atmosphere.

1. Do not remove the factory installed P2 plug if it is present.

2. The display should read close to zero.

2. Press the Zero key.
The top line displays dashes

3. The process is complete when the digital calibrator returns to
the Home (Measurement Units) screen.

Note: You can only zero the digital calibrator if the new zero
value is within ± 5 % (of FS) of the original factory calibrated
zero. If the zero procedure generates a new zero reference

------.

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outside this limit, the procedure fails. Factory service may be
required.

2. Restore Factory Calibration

1. Press the Backward key from the Home screen to see
FACTORY CAL TAP  TO RESTORE.

2. Tapping  key asks you to confirm that you want to restore the
calibration: COMMIT FACT CAL? YES- NO-X.

1. Tapping the  key for YES restores the Factory Calibration

and it removes any calibration you may have entered and
it takes you back to FACTORY CAL TAP  TO RESTORE
screen. Tap the Home key to exit.

2. Tapping the X key for NO stops the Restore Factory

Calibration and it takes you back to FACTORY CAL TAP 
TO RESTORE screen. Tap the Home key to exit.

3. User Span (Respan)

1. From the Home screen, press the Backward key to see
RESPAN TAP  TO BEGIN.

The ✓ refers to the Accept key, the following key

2. After tapping the  key, you see two lines of information
display:

1. A suggested reference pressure of 070.00 in large

characters. This refers to 70 % Full Scale.

2. APPLY REFERENCE PRESSURE -CONTINUE

X-CANCELS.

3. After tapping  to continue, the first character flashes on the
screen because you are in edit mode.

1. Use up or down arrow keys to change the value.

2. Or, use the right key to move to the value you need to

change.

.

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4. After editing the value, you see:
ENTER PRESSURE TAP -FINISH X-CANCELS

1. Tapping -FINISH accepts the pressure you entered and

takes you back to the RESPAN TAP  TO BEGIN. Tap the

Home key to exit RESPAN.

2. You can tap the X-CANCELS at any time to stop.

Note: The Units key is turned o during RESPAN.

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Digital Calibrator

Battery

When you turn on the digital calibrator, it draws power from the
batteries and the battery icon displays in the bottom row. When
you press the information button, it displays Batt %.

Batteries

!

DANGER

Remove and replace batteries in non-hazardous (safe) areas only.

Turn o the backlight

▪ Turn o the backlight when you need to conserve battery

power.

▪ The backlight is dimmed when the digital calibrator is in low

battery mode.

Suggested brands of batteries

The following is a suggested list of batteries.

▪ Duracell MN1500
▪ Duracell PC1500
▪ Energizer EN91
▪ Panasonic LR6XWA
▪ Rayovac 815
▪ Varta 4906

Note: The digital calibrator is powered by four 1.5 volt AA size
batteries.

Know your batteries

▪ Never mix batteries—not by manufacturer or by size, by

capacity, or by chemistry.

▪ Never mix old and new batteries.
▪ Remove all four batteries in the digital calibrator at the same

time.

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NOTICE

▪ Replace all four batteries with batteries from the same

package or with the same expiration date.

Install the batteries

1. Turn over the digital calibrator so the display faces down.

2. Remove the two screws on the battery cover with the Phillips­head screwdriver by turning them counterclockwise.

3. Insert the four AA batteries.

Note: Pay attention to the positive (+) and negative (−) battery
polarity markings at the bottom of the compartment.

4. Replace the battery cover.

5. To secure the cover, torque the screws clockwise 2 in. lbs.
maximum.

6. Do not over tighten.

To prevent internal damage to circuitry, do not substitute screws
with lengths that are dierent from the screws Meriam provided to
you.

Watch for the low battery indicator

The battery indicator on the display shows the current charge.

Note: Be prepared to change batteries when you see the outline
of the battery icon and the outline of the battery icon flashes.
You have approximately 2 hours of run time following a low
battery warning.

Refer to battery manufacturers’ instructions

Visit the website of the battery manufacturer to learn more about
the care, storage, shipping, use, disposal, and recycling of your
batteries.

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The display

Bar Graph

Process Variable Readout

Information Readout

The bar graph

The bar graph displays a live indication of the current pressure or
temperature applied to a sensor as a percent of FS.

Note: When you press the Information key, the bar graph
displays the remaining state of the charge for the batteries.

Display functions

The digital calibrator has twelve display functions. It ships with
five display functions active (they appear in bold below). You can
change which displays are active with meriSuite CG.

Press the Forward (or Backward in reverse order) key to view
these modes.

1. Home is the default view with measurement units

2. MIN (Minimum)

3. MAX (Maximum)

4. AVG (Average)

5. FACTORY CAL(ibration ) TAP ✓ TO RESTORE

6. RESPAN TAP ✓ TO BEGIN

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Keypad: Description of the keys

Name Key Description

Backward

Home

Forward

Units

• It cycles backward through menu
options.

• Home key returns you to the

Measurement and Units screen.

• Home key is disabled during tests
and edits

• It cycles forward through menu
options.

• Select a measurement unit.

Release Hold

Hold

Up arrow

Left arrow

Zero

Right arrow

Down Arrow

Cancel or Esc

Accept

Power

• It releases the Hold.

• It begins a Hold.

• It increases digits by one.

• It switches between the P1 and P2
sensors displays.

• It moves the blinking cursor one
space at a time to the left.

• Zero key resets pressure values to
zero.

• It resets min max values.

• It sets edit values to zero.

• It moves the blinking cursor one
space at a time to the right.

• It decreases digits by one.

• It switches between the P1 and P2
sensors displays.

• Cancel any editing or changes
without saving.

• It also stops tests.

• Accept applies all editing and
changes, and then saves them.

• It also stops tests.

• Turns the digital calibrator on or o.

Information

Backlight

User Manual for M1004 Digital Calibrator

• Displays information about the digital
calibrator, internal sensor, and the
firmware.

• It provides on and o only.

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The Information key and the Home screen

The Information menu provides you with details about the digital
calibrator and sensors.

1. Batt % displays the percentage on the bar graph and in digits.

2. Indicates sensor type (or measurement type): compound,
absolute, or dierential.

3. CAL DATE

4. USL is an abbreviation for upper sensor limit.

5. LSL is an abbreviation for lower sensor limit.

6. LT MAX % displays the Life-Time Maximum that has been
reached on the sensor.

7. SENSOR F/W VERS (F/W is an abbreviation for firmware)

[this message scrolls to display the information]

8. SENSOR S/N (S/N is an abbreviation for serial number)
[this message scrolls to display the information]

9. DEV F/W VER (DEV is an abbreviation for device; it refers
to the digital calibrator) [this message scrolls to display the

information]

10. DEV S/N [this message scrolls to display the information]

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Up and Down Arrows

1. In the edit mode, the Up Arrow increases the digit each time
you press it. The Down Arrow decreases the digit

and

1. Up Arrow: 0 to 1 to 2 to 3 to 4 to 5 to 6 to 7 to 8 to 9.

2. Down Arrow: –0 to –1 to –2 to –3 to –4 to –5 to –6 to –7 to

–8 to –9.

3. The negative symbol in the display appears in front of the

first digit when it is required.

The backlight

White backlight

The white backlight has an automatic time out. If you do not press
any keys while the backlight is on, it automatically turns o.

Backlight

Press the Backlight key to cycle through: On or O.

Flashing red backlight

The flashing red backlight indicates an error condition. Possible
error conditions are:

▪ Pressure has exceeded the calibrated accuracy of the digital

calibrator.

▪ Pressure has fallen below the stated accuracy of the digital

calibrator.

Note: The red backlight overrides the white backlight.

Overrange condition

During an error or overrange condition, the red backlight

overrides the white backlight.

However, once the error or overrange condition is corrected, the
white backlight is restored to its previous state (if the backlight

Auto O timeout did not expire).

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NOTICE

Measurement units

A measurement unit doesn’t display

If a given measurement unit cannot display the correct number
of digits, the digital calibrator automatically advances to the next
displayable unit.

Note: When you turn on the digital calibrator, it defaults to the
last selected measurement unit.

Measurement units are stored on a sensor

When the digital calibrator is shipped, eight (8) measurement
units are active. See the following list.

Standard Measurement Units (non-custom)

1. PSI 4. INHG0C 7. BA R

2. INW20C 5. MMHG0C 8. MBAR

3. MMW20C 6. KPA

Auto O (Automatic shut o)

How long will the digital calibrator remain on if I leave it
unattended?

▪ The default setting is 30 minutes.

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What does the Zero (ø) key do?

In normal measure mode

If the sensor is within a tolerance band around zero, press and
hold the Zero key to zero the pressure measurement and to reset
the Min and Max measurements.

Note: The tolerance band is approximately ± 1 % of the FS
pressure value of the sensor.

In Min or Max mode

Press and hold the Zero key to reset the MIN and MAX
measurement. However, this does not zero the pressure
measurement.

In Average mode

Press and hold the Zero key to restart the rolling average.

Holding the Zero key

The key must be held to perform the Zero mode. The displayed
value(s) dashes out during the zero process.

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Specifications

Sensors: type and range

Non-Isolated: Accuracy 0.025 % of Full Scale

Model number Pressure range

Absolute Non-Isolated (AN)

ZM-AN  psi to  psi
ZM-AN  psi to  psi
ZM-AN  psi to  psi

Compound Non-Isolated (CN)

ZM-CN - psi to  psi
ZM-CN - psi to  psi
ZM-CN -. psi to  psi
ZM-CN -. psi to  psi
ZM-CN -. psi to  psi
ZM-CN -. psi to  psi

Dierential Non-Isolated (DN)

ZM-DN - psi to  psi
ZM-DN - psi to  psi
ZM-DN -. psi to  psi
ZM-DN -. psi to  psi
ZM-DN -. psi to  psi
ZM-DN -. psi to  psi

Pressure measurements

▪ ± 0.025 % of FS.
▪ Accuracy statements include the combined eects of linearity,

repeatability, hysteresis, and temperature over the specified
operating temperature range.

▪ Warm up time: 5 minutes.
▪ You should zero the sensor at working ambient temperature

before using it.

Temperature

▪ Storage: –20 °C to 70 °C (–4 °F to 158 °F)
▪ Operating: –10 °C to 50 °C (14 °F to 122 °F)

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NOTICE

Relative Humidity

▪ 95 % non- condensing

Vibration

▪ 1 meter drop test

Ingress specifications

▪ IP52

Altitude specifications

Do not use the M1004 digital calibrator at an altitude above
2000m (6561ft.).

Keypad

▪ Sealed membrane 16 domes.

Media Compatibility

Pressure Types

▪ DN: Dierential pressure, non-isolated sensors for use with

clean, dry, non-corrosive gases only.

Pressure Limits

▪ DN units: 2x range when pressurized on high side only. 150

psi (10.5 kg/cm) static when applied to both sides of sensor
simultaneously.

Battery Type

4 AA alkaline batteries of the same battery type.

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5.2

2.3

Dimensional specifications

9.8

Weight

1000 g (35.2 oz. or 2.2 lbs.)

Enclosure

Polycarbonate/ABS alloy

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Maintenance and cleaning

Cleaning

▪ Clean the MTS and its cable with a soft, damp cloth.
▪ Clean the Luer Locks with a soft, damp cloth or replace them

as needed.

Prepare the digital calibrator for storage

Remove the batteries to store the digital calibrator

▪ We recommend that you remove the batteries from the digital

calibrator if you are storing it for an extended time period.

▪ Follow the battery manufacturer’s instructions for storing your

batteries.

Store the digital calibrator

▪ The recommended storage temperature for the digital

calibrator is between: –20 °C to 70 °C (–4 °F to 158 °F)

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Help

Register your product

We want you to get the most out of your purchase, and that starts
with a few, easy registration steps.

1. Go to www.meriam.com

2. In the Product Registration section, click Register a product.

Find downloads and documents

1. Go to www.meriam.com.

2. In the Technical Resources section, click Learn More.

3. Select one of these categories to find the files you need:

Product manuals | User Manuals and Quick Start Guides

Downloads | Applications (software), firmware, updates,

installation instructions

Certifications | Certifications and approvals

SDS (MSDS) | Safety Data Sheets

Control Drawings | Intrinsically Safe Drawings

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Meriam Contact Information

Contact us

Address

Meriam
10920 Madison Avenue
Cleveland Ohio 44102 USA

Telephone

▪ US customers [phone]
▪ International customers + 1 216 281 1100

Fax

▪ US & International customers + 1 216 281 0228

E-mail addresses

▪ Return Material Authorization & Service & Repair Department

[e-mail]

▪ Sales Department

[e-mail]

Website

meriam.com

Find a local Meriam representative

Use this map to help you find a Meriam representative.

▪ http://www.meriam.com/representatives-map/

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9R693-IR October 2018

Repair or Calibration

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