Meriam MGP7000-MS700-AI0030, MGP7000-MS700-AI0100, MGP7000-MS700-CI0030, MGP7000-MS700-AI0015, MGP7000-MS700-CI0300 User manual

meriGauge® Plus System

meriGauge® Plus Gauge

meriSense Smart Sensor

meriSuite CG Application

© Meriam2016

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Content

meriGauge® Plus System ...............................................................1

Content ........................................................................................ 2

General information .......................................................................5

Notification Statements ............................................................. 5

Glossary ....................................................................................... 6

General warnings and cautions .....................................................7

Preventing injury ........................................................................ 7

Safety Symbols ........................................................................... 7

Disclaimer: A special condition for the aluminum case ......... 8

Choose the proper gauge and sensor for the right location .. 8

Sample labels for General Purpose gauges ............................. 9

Sample labels for Intrinsically Safe gauges ........................... 10

Sensors .......................................................................................... 13

Make a pressure connection.................................................... 13

meriSense information ............................................................ 14

Gauge ............................................................................................ 17

Batteries .................................................................................... 17

Connect the gauge to a sensor ............................................... 19

The display ................................................................................ 20

Backlight in the LCD display ................................................... 21

Display functions ...................................................................... 21

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

Data Log Lite and Data Log Pro ............................................. 23

Information key ........................................................................ 24

List of Measurement Units ....................................................... 27

Auto Off (Automatic shutoff) .................................................. 28

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Prepare the meriGauge Plus for storage ............................... 28

Do not use the USB in hazardous locations .......................... 28

Application .................................................................................... 29

meriSuite CG and USB Drivers required ................................ 29

Specifications ................................................................................ 30

Approvals .................................................................................. 30

Display Specifications .............................................................. 31

Dimensional Specifications ..................................................... 31

Material specifications ............................................................. 32

Ingress specifications ............................................................... 32

Altitude specifications .............................................................. 32

Safety ............................................................................................. 33

Hazardous locations use .......................................................... 33

Intrinsic Safety Control Drawing for the meriGauge Plus

gauge 9R525 ............................................................................. 34

Intrinsic Safety Control Drawing for the meriSense sensors

9R526 ........................................................................................ 35

EC Declaration of Conformity – MGP7000X ......................... 36

EC Declaration of Conformity – MS700X ............................... 37

EC Declaration of Conformity – MGP7000 ............................ 38

EC Declaration of Conformity – MS700 ................................. 39

Maintenance and cleaning .......................................................... 40

Protect your sensors from dust ............................................... 40

Inspect the vent on the sensors ............................................... 40

Hazardous Material and Recycling Compliance ................... 41

Part numbers ................................................................................ 42

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Help ............................................................................................... 43

Register your product ............................................................... 43

Find downloads and documents ............................................. 43

For repair or calibration .......................................................... 44

Troubleshooting checklist ........................................................ 46

Meriam Contact Information .................................................. 47

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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 affiliates.

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

meriGauge® Plus, meriSense™, and meriSuite™ are trademarks of
Meriam.

All other trademarks are the property of their respective owners.

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Glossary

Words and phrases with their definitions.

Button or key

• A button always refers to an area on the screen that you can
click to select functionality.

• A key always refers to hardware push buttons on the keyboard
that you can press.

IS or Intrinsically Safe

The abbreviation “IS” is used in locations where there is limited

space.

Meriam Calibration

Meriam calibration refers to any calibration completed at Meriam
with Meriam traceability. Meriam calibration includes:

• Oven calibration.

• Multipoint Meriam adjustment.

User Calibration

User calibration refers to any calibration done outside of Meriam

with non-Meriam traceability. User calibration includes:

• Multipoint user calibration or adjustment.

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General warnings and cautions

Preventing injury

Failure to follow all instructions could result in injury:

• Read the entire manual before using the meriGauge Plus
System.

• Understand the contents before using the meriGauge Plus
System.

• Follow all safety warnings and instructions provided with this
product.

• Meet or exceed your employer’s safety practices.

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 Instruction Manual
symbol. This symbol indicates that you
must read the instruction manual.

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.

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Safety Symbols Explaining the symbols

Indicates information essential for
proper product installation, operation or

maintenance.

Disclaimer: A special condition for the aluminum case

Rare incidents: The case is made of aluminum. If you mount it in a
location where a category 1 G apparatus is required, you must
install it in such a way, that ignition sources due to impact and

friction sparks are excluded.

Choose the proper gauge and sensor for the right location

• Only use Intrinsically Safe gauges and sensors in hazardous
locations.

• Never use General Purpose gauges or sensors in hazardous
locations.

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Intrinsically Safe gauges

MGP7000X meriGauge Plus gauges

Directives for the proper use of equipment are located on

9R525-Intrinsically Safe Control Drawing that accompanies each

MGP7000X shipped.

• Component substitution may impair Intrinsic Safety.

• Repairs must be made at Meriam to retain the Intrinsic Safety

Certification.

• Service gauges only in a safe location.

• Replace batteries only in a safe location.

Intrinsically Safe sensors

MS700X meriSense sensors

Directives for the proper use of equipment are located on

9R526-Intrinsically Safe Control Drawing that accompanies each

MS700X shipped.

• Component substitution may impair Intrinsic Safety.

• Repairs must be made at Meriam to retain the Intrinsic Safety

Certification.

• Service sensors only in a safe location.

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Sensors

Make a pressure connection

Make a good NPT connection

Each meriSense detachable sensor has a 316 stainless steel 1/4 in.
male NPT connection for direct mounting.

• The threads should be coated with a pipe sealant compound
before installation.

• Tighten to finger tight plus 1.5 turns to 3 turns using a 23 mm
(7/8 in.) wrench.

Remember: The gauge will face the same direction as the Meriam
logo on the sensor. See the Meriam logo in the red circle in the
figure below.

Use only a wrench on the hex fitting

Never rotate a meriSense sensor by turning the meriGauge Plus
gauge.

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MS700X meriSense sensors

Part number Ranges Type

ZMS700X-AI0005 0 psi to 5 psi Absolute

ZMS700X-CI0005 –15 psi to 5 psi Compound

ZMS700X-AI0015 0 psi to 15 psi Absolute

ZMS700X-CI0015 –15 psi to 15 psi Compound

ZMS700X-AI0030 0 psi to 30 psi Absolute

ZMS700X-CI0030 –15 psi to 30 psi Compound

ZMS700X-AI0050 0 psi to 50 psi Absolute

ZMS700X-CI0050 –15 psi to 50 psi Compound

ZMS700X-AI0100 0 psi to 100 psi Absolute

ZMS700X-CI0100 –15 psi to 100 psi Compound

ZMS700X-AI0300 0 psi to 300 psi Absolute

ZMS700X-CI0300 –15 psi to 300 psi Compound

ZMS700X-AI0500 0 psi to 500 psi Absolute

ZMS700X-CI0500 –15 psi to 500 psi Compound

ZMS700X-AI1000 0 psi to 1 000 psi Absolute

ZMS700X-CI1000 –15 psi to 1 000 psi Compound

ZMS700X-AI3000 0 psi to 3 000 psi Absolute

ZMS700X-CI3000 –15 psi to 3 000 psi Compound

• Includes all combined effects of linearity, repeatability,
hysteresis, stability, and temperature over the specified
calibrated temperature range for one year.

• Not recommended for continuous use
below 0.02 psi absolute.

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Media compatibility

316 SS

Temperature limits

Operating temperature

–10 °C to 50 °C (14 °F to 122 °F)

• Up to 95 % RH non-condensing.

• No change in accuracy over operating temperature range.

• Gauge must be zeroed to achieve rated specification.

Process temperature

–10 °C to 50 °C (14 °F to 122 °F)

Warm-up time

Five (5) minutes.

Accuracy Statement

Absolute sensor

0 % to 110 % of Range: ± (0.02 % of Full Scale) +

0 % to 110 % of Range: (0.005 % of Reading)

Compound sensor

0 % to 110 % of Range: ± (0.02 % of Full Scale) +

0 % to 110 % of Range: (0.005 % of Reading)

Vacuum*: ± (0.02 % of Full Scale)

*Vacuum = –14.5 psi

User Manual for meriGauge Plus System 15 of 47

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Pressure limits

Operating pressure limits

• Do not exceed the pressure limits listed in the sensor pressure

ranges section for the MS700X meriSense.

• Failure to operate within the specified pressure limits could
result in injury.

Overrange limit

Overrange pressure means the value is outside the calibrated
upper or lower range.

• Up to 110 % of range, meriGauge Plus displays the accurate
pressure.

• Above 110 %, it flashes red. This indicates that the applied
pressure exceeds the calibrated range.

Note: If the calibrated pressure range is exceeded,
the pressure displayed may not be accurate

• Above 120 %, it flashes red and displays dashes.

Burst pressure limit

Burst pressure is the point at which the sensor may mechanically
leak.

Rated PSI

Burst Pressure

5 10 times

15 6 times

30 6 times

50 6 times

100 4 times

300 4 times

500 3 times

1000 3 times

3000 3 times

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Gauge

Batteries

Know your batteries

A list of batteries for the meriGauge Plus that have been approved
(Intrinsically Safe) for use in Hazardous Locations.
No substitutions are allowed.

• Duracell MN1500

• Duracell PC1500

• Energizer EN91

• Panasonic LR6XWA

• Rayovac 815

• Varta 4906

Note: The meriGauge Plus is powered by four 1.5 volt AA size
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 meriGauge Plus at the same

time.

• Replace all four batteries with batteries from the same
package or with the same expiration date.

Install the batteries

Do not change batteries in hazardous locations.

1. Turn over the meriGauge Plus so the display faces down.

2. Remove the four screws on the battery cover with the Phillips
head screwdriver by turning them counterclockwise.

3. Remove plastic battery cap.

4. Insert the four AA batteries.

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

5. Replace plastic battery cap.

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Note: Must be installed for use in hazardous location.

6. Replace the battery cover.

7. To secure the cover, torque the screws clockwise 0.56 N-m

(5 in-lbs) maximum.

Watch for low battery indicators

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 when the outline of the battery icon flashes.

Using the Backlight reduces your battery life

Turn it off to optimize battery life.

Refer to the 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.

Consider inserting new batteries

Before you begin data logging or running a Rate of Change.

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Process / Pipe

Connect the gauge to a sensor

• The gauge will face the same direction as the Meriam logo on
the sensor. See the circled Meriam logo in the figure below.

• With the sensor already installed in your process, slide the
gauge housing on the meriSense until it fully connects.

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The display

The keys

The bar graph

The bar graph displays a live indication of the current pressure
applied to the sensor as a % of Full Scale.

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

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1. Home screen

7. T.OFF, T.ON (Tare)

MIN

AVG

3. MAX (Maximum)

9. RATE (Rate of Change)

4. +RV (Relief Valve Test -

10. DATA LOG (Data Log

–RV

Time & Temperature

6. + / - (Accuracy)

Backlight in the LCD display

White backlight

The white backlight has an automatic timeout. If you do not press
any keys while the backlight is on, it automatically turns off after
1 minute.

Note: You can configure the backlight timeout with meriSuite CG.

Levels of backlight intensity

Press the Backlight key to cycle through the choices:

• Low.

• Medium.

• High.

• Off.

Flashing red backlight

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

• Pressure has exceeded the calibrated accuracy of the
meriSense.

• Pressure has fallen below the stated accuracy of the meriSense.

Note: The red backlight overrides the white backlight.

Display functions

When meriGauge ships, it has eleven (11) display functions.

2.

Release)

(Minimum) 8.

(Average)

5.

Reseat)

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(Relief Valve Test -

11.

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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 Full Scale
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 Tare mode

When the Tare is off (T.OFF), press and hold the Zero key to turn

on Tare (T.ON) and to set the Tare value at the current pressure
measurement.

Likewise, when the Tare is on (T.ON), press and hold the Zero key
to turn off the Tare mode.

In Average mode

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

In Relief Valve Test mode

The Zero key resets the values +RV (release) and –RV (reseat) to
the current pressure measurement.

In Data Log mode

Press and hold the Zero key until you see—STARTING—appear
on the LCD display to start recording a new data log.

Press and release the Zero key to log one data point during On
Demand type.

Holding the Zero key

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

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Data Log Lite and Data Log Pro

View the “BATT %” before you begin

Data Log Lite runs up to one hour.

Note: Do not start data logging if the outline of the battery icon is
flashing.

Data Log Lite is limited to one data log

Data Log Lite can record and hold only one data log at a time.

Note: When you press and hold the Zero key while DATA LOG
appears in the LCD display, a new data log begins to record over the
existing data log.

Data Log Pro provides a maximum of 128 logs

Data Log Pro provides a maximum of 128 logs or a maximum of
100 000 data points.

Start the data logging process

1. Press the Display key until you see DATA LOG appear in the
LCD display.

2. Press and hold the Zero key until you see —STARTING—. The
data log symbol starts to flash indicating it is recording data.

Data Log Lite records data every 15 seconds for one hour.

3. —COMPLETE—appears after one hour.

Note: Auto Off is suspended during data logging. If you selected 5
Minutes for Auto Off, then meriGauge Plus remains on 5 minutes
after data logging completes, and then turns off.

Stop the data logging process

Here are some of the actions that can complete the data logging

process before the one hour:

• Press and hold the Zero key until you see —STOPPING—.

• Press the Power key to turn off the meriGauge Plus.

• Remove the meriGauge Plus from a sensor.

• Connect the meriGauge Plus to the meriSuite CG app.

• The duration was reached that you selected in the Setup tab.

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Information key

Where is the Information key on the meriGauge Plus?

The Information key is the red triangle in the Meriam logo.

What does the Information key normally display on the meriGauge Plus?

• BATT % displays the percentage on the bar graph and in digits
or USB POWER displays.

• The type of pressure sensor displays.

• CAL DATE displays the date that Meriam calibrated the

meriSense sensor.

• USL displays the Upper Specification Limit on the sensor.

• LSL displays the Lower Specification Limit on the sensor.

• LT MAX % displays the Life-Time Maximum that has been

reached on the sensor.

• The characters SENSOR F/W display first and then they scroll
across the screen from right to left to display VER. with the
version number of the firmware.

• The characters SENSOR S/N display first and then they scroll
across the screen from right to left to display S/N with the
serial number of the sensor.

• The characters SNSR NAME display first and then they scroll
across the screen from right to left to display the sensor’s
name.

• The characters GAUGE F/W VER. display first and then they
scroll across the screen from right to left to display VER. with
the version number of the firmware.

• The characters GAUGE S/N display first and then they scroll
across the screen from right to left to display S/N with the
serial number of the gauge.

• The characters GAUGE NAME display first and then they scroll
across the screen from right to left to display the gauge’s
name.

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What does the Information key display while DATA LOG appears on the bottom row on the screen?

It displays the version of Data Log that you have: LITE or PRO.

1. Turn on meriGauge Plus.

2. Press the Display key on the gauge until you see Data Log.

3. Press the Information key once to display the version of data
logging on the gauge:

• VERS. PRO for Data Log Pro.

• VERS. LITE for Data Log Lite.

What additional information does the Information key

display in Data Log Pro?

Press the Information key six more times to see these six notices
in the following order on the gauge:

AVAIL PTS.

• The available points tell you how many points are available in
the gauge memory.

• The maximum number of points is 100 000.

AVAIL LOG

• The available log tells you how many data logs are available in
the gauge memory.

• The maximum number of data logs is 128.

TYP. MEAS

Type tells you which data logging type was selected in Setup tab
in meriSuite CG for the gauge. There are four types:

• TYP. MEAS refers to Individual Samples.

• TYP. AVG refers to Average only.

• TYP. AVG+PK refers to Average with peaks.

• TYP. DEMAND refers to On Demand.

Note: See the Parameter Choices section in the meriSuite CG User
Manual 9R609 for a description of the data log types.

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INTERVAL.

• Interval tells you the hours, minutes, or seconds that was
selected in Setup tab in meriSuite CG for the data log.

• Interval displays dashes “------“ when On Demand is the data
log type. On Demand has no intervals.

PTS. CFG.

• Points Configured tells you the number of points that was
selected in Setup tab in meriSuite CG for the data log.

• But, Points Configured displays dashes “------“ if the gauge was
configured for a fixed amount of time.

• Additionally, Points Configured displays dashes “------“ if the
Forever duration was selected.

TIME CFG. (CFG. MIN, CFG. HR, CFG. DAYS, HR MIN, DAY HR)

• Time Configured tells you the duration that was selected in

Setup tab in meriSuite CG for the data log.

• But, Time Configured displays dashes “------“ if the gauge was
set to record a specific number of points.

• Additionally, Time Configured displays “------“ if the Forever
duration was selected.

What does the Information key do while DATA LOG records data?

Toggle key

While recording data, the Information key becomes a toggle key.
It toggles between the first notice: Log and point number and the
second notice: days, hours, minutes, and seconds.

• Both notices display the remaining duration of points or time.

• When the duration is set for Minutes, Hours, Days, or Points,

then the point number counts down to zero.

• When the point number reaches zero, the gauge displays

--COMPLETED--.

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Formats used in the LCD display

• Hours, minutes, and seconds in this format: HH.MM.SS

• Days, hours, minutes, seconds. DDD HH.MM.SS

• When the days, hours, minutes, and seconds reach zero, the

gauge displays --COMPLETED--.

Note: When Days or Forever are selected for duration, then three
additional (3) digits display for days up to a maximum of 366 days.
The other six (6) digits display as hours, minutes, and seconds.

List of Measurement Units

Measurement units are stored on a sensor

• Each meriSense sensor stores a complete list of measurement
units.

• The meriSuite CG app gives you the ability to configure
specific measurement units to specific sensors.

• The meriGauge Plus displays only the units selected in
meriSuite CG for individual sensors.

• When the meriSense pressure sensors are shipped, the
common 12 measurement units are available. These 12 units
appear in bold type in the following Standard Units list.

Standard Units (non-custom)

1. PSI

2. INW20C

3. INW4C

4. INW60F

5. FTW20C

6. FTW4C

7. FTW60F

8. MMW20C

9. MMW4C

10. MMW60F

11. CMW20C

12. CMW4C

13. CMW60F

14. MW20C

15. MW4C

16. MW60F

17. INHG0C

18. MHG0C

19. CMHG0C

20. MMHG0C

21. TORR

22. KG/CM2

23. KG/M2

24. PA

25. HPA

26. KPA

27. MPA

28. BAR

29. MBAR

30. ATM

31. OZ/IN2

32. LB/FT2

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Measurement units can be changed on a sensor

• You must use the meriSuite CG app to select or deselect the
Standard Units on a particular sensor from the preceding list.

• By pressing the Units key on the gauge, you cycle through all
the configured units within the currently attached meriSense
that can be displayed on meriGauge plus.

Auto Off (Automatic shutoff)

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

• The default setting is Always On.

• You can configure the timeout for the Auto Off with

meriSuite CG.

The timeout for Automatic Shutoff is suspended

The timeout for the Auto Off is suspended:

1. During data logging sessions to prevent an accidental loss of
information.

2. While the gauge is connected to a computer.

Auto Off is automatically re-instated after data logging is
completed and after the gauge is disconnected from the
computer.

Prepare the meriGauge Plus for storage

Remove the batteries to store the gauge

1. Remove the batteries from the meriGauge Plus to store it for
30 days or more.

2. Follow the battery manufacturer’s instructions for storing your
batteries.

Store the meriGauge Plus

The recommended storage temperature for the meriGauge Plus is
between –20 ºC to 70 ºC (–4 ºF to 158 ºF).

Do not use the USB in hazardous locations

Connect a USB in safe locations only.

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Application

meriSuite CG and USB Drivers required

First—Install meriSuite CG

1. Read the meriSuite™ CG Installation Instructions 9R606.

2. The instructions have a link that you can click to download the
meriSuite CG setup file.

3. Follow the on-screen instructions.

Second—Install USB Drivers

1. Read the USB Drivers Installation Instructions 9R607.

.

2. The instructions have links that you can click to download the
required USB Driver.

3. Follow the on-screen instructions.

Third—Read the meriSuite CG User Manual

1. Read the meriSuite CG User Manual.

Note: You are now ready to use the meriSuite CG app to configure,
to view data, and to create reports for the meriGauge Plus System.

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9R479-D October 2018

Specifications

Approvals

MGP7000X Intrinsically Safe Model

ATEX II 1 G; Ex ia IIC T4 Ga

DEMKO 16 ATEX 1809X

cULus Listed Intrinsically Safe, Exia

Class I, Div. 1 Groups A, B, C, D: T4

Class I, Zone 0, AEx ia IIC T4

–10º C < Ta < +50º C

Entity parameters:

Lo=0 μH, Uo = 5.5VDC

CE Compliance

Po = 1.249W, Io = 227mA, Co = 35 μF,

MS700X Intrinsically Safe model

ATEX II 1 G; Ex ia IIC T4 Ga

DEMKO 16 ATEX 1785

IECEx Ex ia IIC T4 Ga

–10º C < Ta < +50º C

IECEx UL 16.0120

cULus Listed Intrinsically Safe, Exia

Class I, Div. 1 Groups A, B, C, D: T4

Class I, Zone 0, AEx ia IIC T4

–10º C < Ta < +50º C

Entity parameters: Pi = 1.249W, Ii = 227mA, Ci = 30 μF,

Li=0 μH, Ui = 5.5VDC

CE Compliance

MGP7000 and MS700 (General Purpose models)

CE Compliance

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Display Specifications

Display rate

The meriGauge Plus displays five (5) updates per second.

LCD Display

• The LCD displays six (6) digits.

• The numerical display height is 17.8 mm (0.7 in.)

Dimensional Specifications

The meriGauge Plus gauge

with the meriSense smart sensor

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Material specifications

meriGauge Plus aluminum housing

The meriGauge Plus housing is made of these two types of
aluminum:

• A356 Aluminum.

• 6061 Aluminum.

Disclaimer: Special condition for the aluminum case

Rare incidents: The case is made of aluminum. If you mount it in a
location where a category 1 G apparatus is required, you must
install it in such a way, that ignition sources due to impact and
friction sparks are excluded.

meriSense

The meriSense is made from 300 series stainless steel.

Ingress specifications

• The meriGauge Plus is rated IP66.

• The meriSense is rated IP67.

Altitude specifications

Do not use the meriSense at an altitude above 2000 m (6561 ft).

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Safety

Hazardous locations use

Intrinsically Safe Model

The meriGauge Plus MGP7000X and meriSense MS700X include
certification for Intrinsically Safe operation.

Refer to the Intrinsic Safety Control Drawing for meriGauge 9R525
and for meriSense 9R526 in the Safety section in this manual for

more information.

Hazardous locations and non-hazardous locations (safe locations)

The following table identifies model numbers and locations of
acceptable use:

Model Number Location

MGP7000

MGP7000X

MS700

MS700X

General
Purpose

Intrinsically
Safe

General
Purpose

Intrinsically
Safe

Non-hazardous location

(Safe location)

Yes NO

Yes Yes

Yes

Yes Yes

Hazardous location

NO

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Intrinsic Safety Control Drawing for the meriGauge Plus gauge 9R525

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Intrinsic Safety Control Drawing for the meriSense sensors 9R526

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9R479-D October 2018

Maintenance and cleaning

Protect your sensors from dust

Keep the dust cap on sensors

• Make sure you put the dust cap on the sensor after the

meriGauge Plus gauge has been detached from the sensor.

• The dust cap protects both the electrical contacts and the vent.

Inspect the vent on the sensors

Do not block vent

1. If the vent becomes blocked, it will cause inaccurate

measurements.

2. Meriam recommends that you visually inspect the vent area

each time you use a meriSense sensor to make sure it is not
blocked.

Cleaning sensors

• Use only water to clean sensors.

• Do not use solvents or cleaners.

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Hazardous Material and Recycling Compliance

Compliant with European Union Directives

This product is compliant with these European Union Directives:

Directive Description

RoHS Directive
2011/65/EU

WEEE
2012/19/EU

Reduction of Hazardous Substances

Waste from Electrical and Electronic Equipment

Note: The following marking indicates that you must
not discard this electrical / electronic product in
domestic household waste.

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Z9P1521

USB A to right angle mini B –3 ft black cable

Z9P1055-2

Protective Boot

Z9A1354

Hard carrying case

Z9A878

“AA” Battery kit (4 pack)

Z9P1641

Activation Key for Data Log Pro

Part numbers

Part Numbers Descriptions

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Option 3: Call Meriam to request repair or calibration.

Before you ship anything to Meriam

1. You must receive a RMA number from Meriam first.

2. Clearly write on the package or place a shipping label on it

with the RMA number (Return Material Authorization
Number).

Note: we will return the gauge or sensor at your expense if we
have not given you an RMA number.

3. An RMA number must appear on all packages that arrive at

Meriam to properly track, process, and repair your gauge.

Do you have any questions? Call Meriam

Ship the box to

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Troubleshooting checklist

The words “NO SENSOR” display on the gauge

Follow these steps to troubleshoot the meriGauge Plus connection
with meriSense sensor when the message NO SENSOR appears:

1. Turn off the meriGauge Plus gauge.

2. Remove the gauge from the sensor.

3. Re-attach the gauge to the sensor.

Remember: The gauge will face the same direction as the Meriam
logo on the sensor. (You may hear it click when it locks in place.)
See the Meriam logo in the red circle in the figure below.

Note: The locking pin prevents the gauge from accidentally
disconnecting from the sensor.

4. Turn on the meriGauge Plus gauge.

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