MPG2000BBL-D4-M9 Intrinsically Safe Battery-Powered Digital Pressure Gauges
Meriam.com
s
s
s
s
s
Selectable Units and Shutoff Time
Easy Keypad Setup and Zero
±0.25% Test Gauge Accuracy
316L Stainless Steel Sensor
All Metal Housing
Meriam MPG2000BBL-D4-M9 series digital pressure
gauges successfully address the modern demands of process pressure measurement in hazardous locations.
Standard features include zeroing on gauge reference
ranges, selectable engineering units, pass code protection,
adjustable display shutoff time, field recalibration and a
ruggedized all-metal housing.
Typical applications are instrumentation and control in
the process industries, hydraulics, pneumatics, industrial
gases, and OEMs.
Agency Approval
Factory Mutual Approved Intrinsically Safe for
Hazardous Locations USA & Canada
Class I, Division 1, Groups A, B, C, D
T3C Ta = –40 to 82°C; T4 Ta = –40 to 66°C,
CL I Zone 0 AEx/Ex ia IIC
T3 Ta = –40 to 82°C; T4 Ta = –40 to 66°C
Sensor Ranges and Engineering Units Res
3 psig *
15 psig vac *
3PSIG .001
100KPAVAC
6INHGG .001
0.1MPAVAC
85INH2OG .1
1BARVAC
50ZING .01
1KGCMVAC
210GCMG .1
1ATMVAC
15 psig
150MMHGG .1
150TORRG .1
15PSIG
200MBARG .1
30INHGG
200CMH2OG .1
400INH2OG
2000MMH2OG 1
240ZING
7FTH2O .001
1000GCMG
20KPAG .01
760MMHGG
Res
5 psig *
760TORRG
5PSIG .001
1000MBARG
10INHGG .01
1000CMH2OG
140INH2OG .1
35FTH2O
80ZING .1
100KPAG
350GCMG .1
0.1MPAG
260MMHGG .1
1BARG
260TORRG .1
1KGCMG
350MBARG .1
1ATMG
±15 psig *
350CMH2OG .1
3500MMH2OG 1
±15PSIVAC
12FTH2O .01
15PSICPD
35KPAG .01
±30INHGVAC
15 psia
Res ±400INH2OVAC
15PSIA .01
±240ZINVAC
30INHGA .01 ±1000GCMVAC
400INH2OA .1 ±760MMHGVAC
240ZINA .1
±760TORRVAC
1000GCMA 1 ±1000MBARVAC
760MMHGA .1 ±1000CMH2OVAC
760TORRA .1
±100KPAVAC
1000MBARA 1
±0.1MPAVAC
1000CMH2OA 1
±1BARVAC
100KPAA .1
±1KGCMVAC
0.1MPAA .0001
±1ATMVAC
30 psia
1BARA .001
1KGCMA .001
30PSIA
1ATMA .001
60INHGA
Res
15 psig vac *
850INH2OA
15PSIVAC .01
480ZINA
30INHGVAC .01
2100GCMA
400INH2OVAC .1
1600MMHGA
240ZINVAC .1
1600TORRA
1000GCMVAC 1
2000MBARA
760MMHGVAC .1
2100CMH2OA
760TORRVAC .1
200KPAA
1000MBARVAC 1
0.2MPAA
1000CMH2OVAC 1
2BARA
Res
.1
.0001
.001
.01
.001
Res
.01
.01
.1
.1
1
.1
.1
1
1
.01
.1
.0001
1
1
1
Res
.01
.01
.01
1
.1
1
1
1
1
1
.1
.0001
.001
.001
.001
Res
.01
.01
1
.1
1
1
1
1
1
.1
.0001
.001
Ranges and Resolution
See table below. Units may be changed to any listed with
same sensor range. Fixed resolution.
Accuracy (includes linearity, hysteresis, repeatability)
Standard: ±0.25% of full scale ±1 least significant digit
HA option:±0.1% FS ±1 LSD (see table for availability)
Display
3 readings per second nominal display update rate
4 digit LCD, 0.5" H and 5 character 0.25" H alphanumeric
Red LED backlight activated with any keypress for 1
minute if light sensor detects low light.
Batteries
Two 1.5 V AAA Panasonic LR03 alkaline cells
Approx. 150 to 1000 hours depending on backlight usage
Low battery symbol on display
Controls and Functions
Turns gauge on or off
Hold to zero gauge reference models
Engineering unit selection
Up: increase settings
Auto shutoff time selection
Down: decrease settings
Internal lockout switch: enable/disable setup & calibration.
Auto Shutoff
Default 5 minutes. Selectable 1 minute to 8 hrs or on/off.
Min/ Max Memory
M9 version: Min/max turned off
Min/max can be user configured to be individually
enabled or disabled, saved or cleared at power off
* -HA option not available
30 psia
Res
2KGCMA .001
2ATMA .001
30 psig
30PSIG
60INHGG
850INH2OG
480ZING
2100GCMG
1600MMHGG
1600TORRG
2000MBARG
2100CMH2OG
70FTH2O
200KPAG
0.2MPAG
2BARG
2KGCMG
2ATMG
60 psig
60PSIG
120INHGG
1660INH2OG
960ZING
4200GCMG
3100MMHGG
3100TORRG
4100MBARG
4200CMH2OG
140FTH2O
400KPAG
0.4MPAG
4BARG
4KGCMG
4ATMG
100 psia
100PSIA
200INHGA
2770INH2OA
1600ZINA
7000GCMA
5200MMHGA
5200TORRA
7000MBARA
7000CMH2OA
700KPAA
0.7MPAA
7BARA
7KGCMA
7ATMA
–15V100psig *
Res
100PSIVAC .1
100PSICPD .1
200INHGVAC .1
2770INH2OVAC 1
1600ZINVAC 1
5200MMHGVAC 1
5200TORRVAC 1
700KPAVAC 1
0.7MPAVAC .001
7BARVAC .01
7KGCMVAC .01
7ATMVAC .01
Res
.01
.01
1
.1
1
1
1
1
1
100 psig
.01
.1
100PSIG
.0001
200INHGG
.001
2770INH2OG
.001
1600ZING
.001
7000GCMG
Res
5200MMHGG
.01
5200TORRG
.1
7000MBARG
1
7000CMH2OG
1
230FTH2O
1
700KPAG
1
0.7MPAG
1
7BARG
1
7KGCMG
1
7ATMG
.1 –15V200 psig *
.1
200PSIVAC
.0001
200PSICPD
.001
400INHGVAC
.001 5500INH2OVAC
.001
3200ZINVAC
Res
1400KPAVAC
.1
1.4MPAVAC
.1
14BARVAC
1
14KGCMVAC
1
14ATMVAC
200 psig
1
1
200PSIG
1
400INHGG
1
5500INH2OG
1
3200ZING
.1
480FTH2O
.0001
1400KPAG
.001
1.4MPAG
.001
14BARG
.001
14KGCMG
Res
.1
.1
1
1
1
1
1
1
1
.1
.1
.0001
.001
.001
.001
Res
.1
.1
.1
1
1
1
.001
.01
.01
.01
Res
.1
.1
1
1
.1
1
.001
.01
.01
14ATMG .01
300 psig
Res
500 psig
Res
300PSIG .1
610INHGG .1
4800ZING 1
700FTH2O .1
2000KPAG 1
2MPAG .001
20BARG .01
20KGCMG .01
20ATMG .01
500PSIG .1
1020INHGG 1
1150FTH2O 1
3500KPAG 1
3.5MPAG .001
35BARG .01
35KGCMG .01
35ATMG .01
1000 psig
Res
2000 psig
Res
1
1
1
.01
.1
.1
.1
Res
1
1
1
.01
.1
.1
.1
Res
1
.01
.1
.1
.1
1000PSIG 1
2040INHGG 1
2300FTH2O 1
7000KPAG 1
7MPAG .001
70BARG .01
70KGCMG .01
70ATMG .01
2000PSIG
4070INHGG
4600FTH2O
14MPAG
140BARG
140KGCMG
140ATMG
3000 psig
3000PSIG
6100INHGG
6900FTH2O
20MPAG
200BARG
200KGCMG
200ATMG
5000 psig
5000PSIG
35MPAG
350BARG
350KGCMG
340ATMG
H H H H H H
H H H H H
H H H H H H
H H H H H
H H H H H H
H H H H H
H H H H H H
H H H H H
H H H H H H
Made in USA
Pass Code Protected Calibration
Non-interactive zero, span, and linearity, ±10% of range
Overpressure, Burst, Vacuum
2 X pressure range for 3 psi to 2000 psi sensors
5000 psig for ranges using 3000 psig sensor
7500 psig for ranges using 5000 psig sensor
Over-range and under-range display warnings
Vacuum service: 15 psig, 15 psia, 30 psia, 100 psig, 100
psia, 200 psig
Burst: 4 X pressure rating or 10,000 psi, whichever is less
Weight
9 ounces (approx.), shipping wt. 1 pound (approx.)
Housing Materials and Circuit Board Protection
Epoxy powder coated aluminum case, rear cover, and
bezel. Rubber gaskets, polycarbonate label. Reinforced
sensor area. Moisture resistant circuit board coating.
Connection and Material
1/4" NPT male fitting, 316L stainless steel wetted parts
Temperature Ranges
Compensated:
32 to 158°F (0 to 70°C)
Storage:
–40 to 203°F (–40 to 95°C)
Operating:
–40 to 180°F (–40 to 82°C)
How to Specify
MPG2000BBL range -D4-M9 - options
Range—see table at left
psi = PSI
kg/cm2 = KGCM
inHg = INHG
g/cm2 = GCM
oz/in2 = ZIN
kPa = KPA
MPa = MPA
inH2O = INH2O
mbar = MBAR
ftH2O = FTH2O
bar = BAR
mmHg = MMHG
cmH2O = CMH2O
torr = TORR
mmH2O = MMH2O
atm = ATM
G = gauge reference pressure
CPD = compound; inHg vacuum, psi pressure
VAC = gauge reference vacuum
A = absolute reference
Any range may be ordered as the default engineering unit.
If vacuum gauge requires a minus sign, please specify.
The listed ranges are rounded off.
Options—add to end of model number
High accuracy, ±0.1% FS ±1 LSD.
HA Not available with 3 psi, 5 psi, bipolar, or vacuum
sensors. See table at left for availability.
Accessories
NC 5 point NIST traceability certificate, test data and date
RRB Protective red rubber boot
Example: MPG2000BBL300PSIG-D4-M9-HA
Battery powered, backlit display, 0-300.0 psig, 4 digit
display, high accuracy
Gauge model number may vary from part number ordered.
© 09-15
MPG2000BBL-D4-M9 Operating Instructions
Precautions
Battery Replacement
Approved Locations
The MPG2000BBL series is approved for use in the following Hazardous Locations.
IS Class I Div 1 Gp ABCD
T3C Ta = –40ºC to 82ºC; T4 Ta = –40ºC to 66ºC.
CL I Zone 0 AEx/Ex ia IIC
T3 Ta = –40ºC to 82ºC; T4 Ta = –40ºC to 66ºC
Installation
4Read these instructions before installing the gauge.
Configuration may be easier before the gauge is
installed. Contact the factory for assistance.
4Installation instructions must be strictly followed in
compliance with Intrinsic Safety National Standard
NEC 504 or ANSI/ISA RP 12.6 and the National
Electrical Code.
4Outdoor or wash down applications requires installation in a NEMA 4X housing.
4Use fittings appropriate for the pressure range of the
gauge.
4Due to the hardness of stainless steel, it is recommended that a thread sealant be used to ensure leakfree operation.
4For contaminated media use an appropriate screen or
filter to keep debris out of gauge port.
4 Avoid permanent sensor damage! NEVER insert objects
into gauge port or blow out with compressed air.
4Remove system pressures before removing or installing gauge.
4Install or remove gauge using a wrench on the hex fitting only. Do not attempt to turn by forcing the housing.
Dimensions
2.88"
0.75"
¼" NPT
3.38"
1.65"
Types of Gauges
Gauge reference reads zero with the gauge port open.
Bipolar ranges read positive pressure and vacuum in the
same units, and zero with the gauge port open.
Compound ranges read positive pressure in psig and
vacuum in inHg, and zero with the gauge port open.
Sealed reference reads zero with the gauge port open and
is referenced to 14.7 psi. Used for 1000 psi and up.
Absolute reference reads atmospheric pressure with gauge
port open and zero at full vacuum.
Display and Keypad
Low battery
symbol
Numeric
display
Minus
sign
XXXXX
88888
2
Units
&
Up
Alphanumeric
display
Shut off
time &
Down
Power & Zero
Hold to zero gauge reference
ranges at start-up
Operation
4 Use within the pressure range indicated on gauge label.
4Avoid permanent sensor damage! Do not apply vacuum to gauges not designated for vacuum operation.
4Use only with media compatible with 316L stainless
steel.
Gauges are not for oxygen service. Accidental rupture
of sensor diaphragm may cause silicone oil inside sensor to react with oxygen.
4The MPG2000BBL series gauges must only be operated in specified ambient temperature ranges.
Maintenance
4The non-metallic cover of the pressure gauge is considered to constitute an electrostatic discharge hazard.
Clean only with a damp cloth.
4 Batteries must be replaced when the low battery indication comes on to prevent unreliable readings.
4WARNING: Replace batteries with approved type in
non-hazardous locations only.
4Approved batteries are two Panasonic LR03 1.5 V
AAA alkaline cells. Replace both batteries at the same
time.
pWARNING: Substitution of batteries may impair
intrinsic safety. Improper voltages will damage the
gauge.
4WARNING: Substitution of components may impair
intrinsic safety. Do not modify the gauge.
4These products do not contain user-serviceable parts
except for batteries. Contact factory for repairs, service, or refurbishment.
A low battery indication (either LOBAT or the symbol
depending on the model) will be shown in the upper
left-hand corner of the display when the battery voltage
falls sufficiently. The batteries should be replaced when
the indicator comes on or unreliable readings may result.
WARNING: Replace batteries with approved type in
non-hazardous locations only. Replace batteries with two
Panasonic LR03 1.5 V AAA alkaline cells.
Replace both batteries with new ones at the same time.
Do not mix different types of batteries. Substitution of
components may impair intrinsic safety.
1.Remove the 6 Phillips
screws on the back of
the unit.
2.Remove batteries by
Two
lifting up the posiAAA
tive end of the battery
batteries
(opposite the spring)
taking care not to bend
the spring.
3.Discard old batteries
properly, do not discard into fire, sources
of extreme heat, or in any hazardous manner.
4. Install batteries with correct orientation. The negative
(flat) end of each battery should be inserted first facing
the battery holder spring.
5. Replace the back cover, including the rubber gasket.
DS-MPG2000BBL rev. 01-15
Operation
Operation—continued
Power-Up
Press and hold the
button for approximately 1 second.
The display is tested, the full-scale range is indicated, the
display segments are briefly shown again, then the actual
pressure and units are displayed.
Power Up with Zero
This applies to gauge reference models only. Absolute reference gauges do not use the zero feature since they read
atmospheric pressure under normal conditions.
Be sure the gauge port is exposed to normal atmospheric
pressure. The zeroing function is only activated at each
power-up and the stored zero correction is erased when
the gauge is shut off.
button. The display is tested.
Press and hold the
button until oooo is displayed.
Continue to press the
Release the button. The gauge in now zeroed and goes
through the startup sequence.
Attempting to zero the gauge with greater than approximately 3% of full-scale pressure or vacuum applied will
cause the display to alternately indicate Err 0 and the actual
pressure. The gauge must be powered down to reset the
error condition.
Normal Operation
The display indicates the pressure reading updated approximately 3 times per second. The auto shutoff timer starts
when the gauge is powered up or whenever a button is
pushed, unless the shutoff time was set for on/off operation.
If excessive vacuum is applied to a pressure-only gauge,
the display will indicate -Err until the vacuum is released.
Applying vacuum to a gauge designed for pressure may
damage the pressure sensor.
If excessive pressure is applied (112.5% over range), an
out-of-range indication of I – – – or I.–.–.– will be displayed depending on model.
When an auto shutoff timer is used, the display indicates OFF
five seconds prior to auto shutoff. Any button can be pressed
to keep the gauge on and reset the auto shutoff timer.
Display Backlighting
Display backlighting will operate for one minute when a
button is pressed provided the front light sensor detects
low ambient light levels. Backlighting may not be apparent under some lighting conditions.
Shut-Down
To shut off the gauge manually at any time, press and hold
button until the display indicates OFF (about 2
the
seconds) and then release.
If the gauge was set up without auto shutoff, it will stay on
until manually shut off or until the batteries are depleted.
Turn gauge off when not in use to conserve batteries.
Engineering Unit Selection
The selected engineering unit is stored in non-volatile
memory and will be retained even with the gauge off or
batteries removed. The available engineering units depend
on the sensor range.
With the gauge in the normal operating mode, press and hold
button until the lower units display starts blinking.
the
Use the s and t buttons to navigate through engineering
unit list. When the desired unit is displayed, press and
release the
button to save your selection and return
to normal operation.
Standard psig units are mathematically converted to the
newly selected engineering unit. When the gauge is powered up, the originally configured psig range is displayed
followed by the conversion to the selected engineering unit.
Compound (inHg/psig) gauges can be changed to display
single-unit vacuum/pressure readings (±psig) when in the
user configuration mode.
If no buttons are pressed the gauge will return to normal
operating mode in approximately 15 seconds.
Auto Shutoff Time Selection
The selected shut off time is stored in non-volatile
memory and will be retained even with the gauge off or
batteries removed.
With the gauge in the normal operating mode, press and hold
button. Release the button when the auto shutoff
the
time is displayed.
Use the s and t buttons to select
AST M of 1, 2, 5, 10, 15, 20 or 30 minutes, or
AST H of 1, 2, 4, or 8 hours, or
AST 0 if auto shutoff is to be disabled.
When the desired auto shutoff time is displayed, press and
button to save the selection and return to
release the
normal operation.
MPG2000BBL-D4-M9 Configuration Instructions
User Configuration Access
User Configuration: Factory or User
User Configuration: Compound/Bipolar Models
User configuration allows access to several functions.
m Revert back to the factory configuration
m Change min/max operation
m Convert a compound gauge to a bipolar gauge
m Calibrate the gauge
Configuration must only be done in a non-hazardous area.
Remove the 6 Phillips screws
Disable
on the back of the unit and
Enable
Switch
remove the rear cover.
Move the switch on the circuit
board down to the ENABLE
position.
This gives the choice of resetting the gauge features to
the factory settings or continuing with user configuration.
The upper display will be blank, and the lower display
will indicate either USER_ or FCTRY.
If FCTRY is selected, the existing user configuration will
be replaced by the original factory configuration.
To select FCTRY, press and release the s button.
button
With FCTRY displayed press and release the
to restore the factory configuration and restart the gauge.
If USER_ is selected, the user configuration can be modified as described in the following steps.
To select USER_, press and release the t button.
button
With USER_ displayed press and release the
to continue.
The configuration parameters may vary depending on
the model.
This will only appear with 15, 100, or 200 psig ranges that
were originally ordered as compound gauges.
Use the s and t buttons to select from the following.
-/+EU Vacuum is indicated as negative pressure in the
selected engineering units
CMPND Vacuum is negative INHG, pressure is PSIG.
This setting disables engineering unit selection.
button to save the user configuPress and release the
ration and restart the gauge.
This completes the configuration for this model.
Move the switch on the circuit board up to the DISABLE
position and replace the rear cover including the rubber
gasket.
User Configuration Access
With the gauge off, press and hold the s button.
button.
Then press the
Release all buttons when the display indicates CFG and
the program version.
The full-scale range is indicated and the display is tested.
The display then indicates _ _ _ _ with the first underscore
blinking, with CFGPC (configuration pass code) on the
lower display.
Note: The gauge will automatically revert to normal
operation if no buttons are pressed for approximately 15
seconds. To cancel and return to normal operation, press
button without entering any pass
and release the
code characters.
Proceed to the User Configuration Pass Code Entry section.
User Configuration: Pass Code Entry
The factory default is 3510, but this may be changed by
the user under the Pass Code Configuration section. If an
incorrect pass code is entered, the gauge will return to the
start of the pass code entry sequence.
1. Use the s or t buttons to set the first digit to 3.
button to move to the next
2. Press and release the
position. The 3 will remain, and the second position
will be blinking.
3. Use the s or t buttons to select 5.
button to index to the next
4. Press and release the
position. 35 will remain, and the third position will be
blinking.
5. Use the s or t buttons to select 1.
button to index to the next
6. Press and release the
position. 351 will remain, and the fourth position will
be blinking.
7. Use the s or t buttons to select 0.
button to proceed.
8. Press and release the
User Configuration: Min/Max
Changing the Pass Code
M9 versions are configured with minimum and maximum
functions turned off. Min/Max can be enabled in the User
Configuration mode.
Max/Min Configuration
While in User Configuration mode, use the s and t buttons to select from the following.
--/--
Min/Max Capture feature is disabled
MX/MN Both highest and lowest values will be captured
MX/-- Only highest value will be captured
--/MN Only lowest value will be captured
button to move to the next
Press and release the
parameter.
Max/Min Memory
The upper display will indicate c l r .
Use the s and t buttons to select from the following.
AUTO Automatically clear maximum and minimum
values when the gauge is powered off.
MAN Manually clear maximum and minimum values.
For compound range models, press and release the
button to move to the next parameter.
button to
For all other models press and release the
save the user configuration and restart the gauge. Move
the switch on the circuit board up to the DISABLE
position and replace the rear cover including the rubber
gasket.
Using Minimum and Maximum Readings
Minimum and maximum readings are continuously stored
and updated whenever the gauge is on. The stored readings can be manually cleared if desired. The MAX and
MIN memory can be configured to save or clear the reading whenever the gauge is off.
button for about 1 second until
Press and hold the
MAX is displayed alternating with the units. The maximum reading will be continuously updated. The gauge
may be left in this mode.
button
After MAX is displayed, press and hold the
for about 1 second until MIN is displayed alternating with
the units. The minimum reading will be continuously
updated. The gauge may be left in this mode.
If excessive vacuum is applied to a pressure-only gauge
while in this mode, the display will indicate -Err until the
MAX/MIN readings are cleared.
button
After MIN is displayed, press and hold the
again for about 1 second until * * * * is displayed. The
MAX and MIN memory is not erased and the gauge
returns to normal operation.
button until the disPress and continue to hold the
play indicates clr MX/MN (about 3 seconds total) and
then release the button. Both maximum and minimum
values are cleared and the gauge returns to the normal
mode and displays the current pressure.
User-defined pass code configuration allows changing of
the factory 3510 pass code to new value for configuration
and calibration.
Configuration must only be done in a non-hazardous area.
Remove the rear 6 Phillips screws and remove the rear
cover.
Move the switch on the circuit board down to the
ENABLE position.
View Or Change User Configuration Pass Code
With the unit off, press and hold the s button, then press
the
button.
Release all buttons when the display indicates CFG.
View Or Change User Calibration Pass Code
With the unit off, press and hold the t button, then press
the
button.
Release all buttons when CAL is shown.
Enter Access Code 1220
Before the unit enters the view or change pass code
mode, the display initially indicates _ _ _ _ with the first
underscore blinking, and with CFGPC or CALPC on the
character display.
Note: The gauge will automatically revert to normal
operation if no buttons are operated for approximately
15 seconds.
To cancel and return to normal operation, press and
button without entering any pass code
release the
characters.
buttons to enter the 1220
Use the s and t and
pass code.
button to proceed.
Press and release the
Note: If an incorrect access code was entered, the gauge
will return to the start of the access code entry sequence.
Once the access code has been entered correctly, the display will indicate the existing user-defined pass code with
either CFGPC or CALPC on the character display.
1. Press the s or t button to select the first character of
the new pass code.
2. When the desired first character is displayed, press and
button to move to the next character.
release the
3. Repeat above until the entire pass code is complete.
button. Release the
4.To exit, press and hold the
button when the display indicates - - - - to restart
the gauge.
5. Move the switch on the circuit board up to the
DISABLE position.
6. Replace the back cover, including the rubber gasket.
MPG2000BBL-D4-M9 Calibration Instructions
Calibration Preparation
Calibration—continued
Calibration—continued
Calibration must only be done in a non-hazardous area.
See the Precautions section.
Gauges are calibrated at the factory using equipment
traceable to NIST. There is no need to calibrate the gauge
prior to use.
Calibration should only be performed by qualified individuals using appropriate calibration standards and procedures.
Contact factory if assistance is required. Gauges can be
returned to factory for certified calibration and repairs.
NIST traceability is available.
Calibration intervals depend on your quality control
program requirements. Many customers use an annual
calibration cycle.
The calibration equipment should be at least four times
more accurate than the gauge being calibrated.
The calibration system must be able to generate and
measure pressure and/or vacuum over the full range of
the gauge.
A vacuum pump able to produce a vacuum of 100 microns
(0.1 torr or 100 millitorr) or lower is required for vacuum
and absolute gauges.
Warning: Never apply vacuum to gauge not designated
for vacuum service. Permanent sensor damage may result.
It is good practice to install fresh batteries before calibration.
Allow the gauge to equalize to normal room temperature
(about 20 minutes minimum) before calibration.
Calibration Mode
The gauge remains in the calibration mode until restarted
manually or power is removed. Features not related to
calibration are disabled.
The calibration may be performed in any of the available
engineering units as well as percent (PCT). Compound
range models are set for the same engineering units for
pressure and for vacuum.
For greatest calibration accuracy, use the s and t buttons to select engineering units with highest number of
display counts.
button when the desired engiPress and release the
neering units are displayed.
Sensor
Suggested units for calibration
3 PSI
3.000 PSI
5 PSI
5.000 PSI
15 PSI
775.7 MMHG (TORR)
30 PSI
69.20 FTH2O
60 PSI
60.00 PSI
100 PSI
7.031 KG/CM2
200 PSI
407.2 INHG
300 PSI
610.8 INHG
500 PSI
500.0 PSI
1000 PSI
70.31 KG/CM2
3000 PSI
6108 INHG
5000 PSI
5000 PSI
Any
100.00 PCT (percent)
The display will then indicate the currently applied pressure in the engineering units selected for calibration.
s and t Button Operation
Each time one of the s or t buttons is pressed and
released quickly, a small change is made to the digitized
pressure signal. It may take more than one of these small
changes to result in a single digit change on the display.
To make larger changes, press and hold the appropriate
s or t button. After about one second, the display will
begin to change continuously.
Release the button to stop.
Then make fine adjustments by pressing and quickly
releasing the appropriate button.
Gauge Reference Pressure Gauges
Apply zero pressure by venting the gauge port to atmosphere. The character display will alternate between
ZERO and CAL.
Press the s and t buttons to obtain a zero indication on
the gauge display.
Apply full-scale pressure. The character display will alternate between +SPAN and CAL.
Press the s and t buttons to match the gauge display to
the full-scale pressure reading on the calibrator.
Apply 50% full-scale pressure. The character display will
alternate between +MID and CAL.
Press the s and t buttons to match the gauge display to
the 50% of full-scale pressure on the calibrator.
Gauge Reference Vacuum Gauges
Apply zero pressure by venting the gauge port to atmosphere. The character display will alternate between
ZERO and CAL.
Press the s and t buttons to obtain a zero indication on
the gauge display.
Apply full-scale vacuum. The character display will alternate between +SPAN and CAL.
Press the s and t buttons to match the gauge display to
the full-scale vacuum indication on the calibrator.
Apply 50% full-scale vacuum. The character display will
alternate between +MID and CAL.
Press the s and t buttons to match the gauge display to
the 50% of full-scale vacuum indication on the calibrator.
Absolute Reference Gauges
Apply full vacuum. The character display will alternate
between ZERO and CAL.
Press the s and t buttons until the display indicates zero.
Apply full-scale pressure. The character display will alternate between +SPAN and CAL.
Press the s and t buttons to match the gauge display to
the full-scale pressure reading on the calibrator.
Apply 50% of full-scale pressure. The lower display will
alternate between +MID and CAL.
Press the s and t buttons to match the gauge display to
the 50% of full-scale reading on the calibrator.
Compound and Bipolar Gauges
In addition to the steps described above for pressure
gauges, apply full-scale vacuum. The character display
will alternate between -SPAN and CAL.
Press the s and t buttons to match the gauge display to
the full-scale vacuum reading on the calibrator.
For bipolar (±) and –30.00inHg/+15.00psig compound
range models only, apply 50% full-scale vacuum. The
character display will alternate between -MID and CAL.
Press the s and t buttons to match the gauge display to
the 50% of full-scale vacuum on the calibrator.
Save Calibration
Once the adjustments are complete, press and hold the
button until the display indicates - - - - then release
the button to store the calibration parameters in nonvolatile memory and restart the gauge.
Verify the pressure indications at 0%, 25%, 50%, 75%
and 100% of full scale.
Move the switch on the circuit board up to the DISABLE
position.
Replace the back cover, including the rubber gasket.
Calibration
See the Calibration Preparation
Disable
section. See rear label of gauge
Enable
for model identification and
Switch
range.
Remove the 6 Phillips screws
on the back of the unit and
remove the rear cover.
Move the switch on the circuit
board down to the ENABLE
position.
Entering Calibration Mode
With the gauge off, press and hold the t button, then
press the
button.
The program version is displayed, then CAL.
Release all buttons when the display indicates CAL.
The display begins by indicating the full-scale positive
pressure rating of the gauge in the engineering units as
configured by the factory, and then shows all display
segments.
Before the gauge enters the calibration mode, the display
initially indicates _ _ _ _ with the first underscore blinking, with CALPC (calibration pass code) on the lower
display.
Note: The gauge will automatically revert to normal
operation if no buttons are operated for approximately 15
seconds. To cancel and return to normal operation, press
button without entering any pass
and release the
code characters.
Enter the pass code as described in the User Configuration
Pass Code Entry section. The default is 3510, but this is
user changeable.
Continue to the Calibration Mode section.
10920 Madison Ave
Cleveland, OH 44102
Phone: 216-281-1100
Fax: 216-281-0228
meriam.com
[email protected]
Meriam maintains a constant effort to upgrade and improve
its products. Specifications are subject to change without
notice. Consult factory for your specific requirements.
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