Meriam M4 User Manual
Congratulations! The M4 is one of the most capable handheld pressure
calibrators available. Follow the instructions in this quick guide to become
familiar with the unit. See the User’s Manual on the product CD or Meriam
website for detailed operating instructions. Consult the specifications on the back
of this page before use. Thank you for choosing Meriam Process Technologies!
M4 Series
Quick Use Guide
9R121-A Dec, 2010
Task Step by Step Instructions
How do I get started with my M4? Remove the hand strap. Loosen the two screws on the battery cover. Insert
How do I change units of measure? Press the Sensor Key to highlight the sensor. The display
How do I source 24V and measure mA(I)? Press the Sensor Key repeatedly until VI is highlighted. Press the Setup
1/8” FNPT Pressure Port(s)
How do I setup a Data Logging session to Press the Setup Key. Place finger on white wheel with slight
capture readings once a second for pressure and rotate clockwise or counter clockwise until
one minute? Data Logging is highlighted. Press the Right Arrow or F4 Key to confirm.
▼▼
▲▲
Standard Banana Jacks
the 4 AA batteries following (+,-) polarity signs. Insert the provided SD™
card in slot next to batteries. Make sure the tab on SD™ card is unlocked.
You will hear a click once installed correctly.
will turn black on the first sensor. The Units Key is now active. Press the
Units Key to scroll through the Engineering units. To confirm selection
press the Left Arrow Key or wait approximately 5 seconds. The screen will
return to Measure mode.
Key to see details and available operation modes. The Mode selection will
be highlighted. Press the Right Arrow Key or F4 to enter in menu. Place
finger on white wheel with slight pressure and rotate clockwise or counter
clockwise until 24V Source is highlighted. Press the Right Arrow Key or F4
to confirm. Mode will now say “24V Source”. Press Left Arrow Key or F1 to
return to Measure mode. You are now sourcing 24V and Measuring mA.
Quick Key and Screen Guide (M400 and M402)
P1:Pressure Sensor #1, P2: Pressure Sensor #2
VI: Volts & Current Sensor
Soft Keys (F1-F4)
Navigation Wheel
Left & Right Arrow
Place finger on wheel and rotate clockwise until interval is selected.
Press the Right Arrow or F4 Key. Use wheel to change value to 1 sec.
Press Save and then Exit. Use wheel to highlight duration. Press the Right
Arrow or F4 Key. Use wheel to highlight 1 minute. Press the Right Arrow
or F4 Key to confirm. Use wheel to highlight start. Press the Right Arrow or
F4 Key to confirm. REC will appear in left hand corner of the screen. When
test is complete it will disappear. Results can be downloaded using USB
cable and software utility provided on the product CD.
Meriam Process Technologies • 10920 Madison Avenue • Cleveland, Ohio 44102 U.S.A.
Phone (216) 281-1100 • Fax (216) 281-0228 • www.meriam.com
M4 Series SPECIFICATIONS
Pressure Measurement
M400: single pressure sensor (specified by customer)
M402: dual pressure sensors – any two compound gauge or absolute sensors, mix and match as desired
Accuracy: ±0.025% of Reading from 10 - 100% FS, ±0.002% of Full Scale under 10% of FS
Temperature Performance: Accuracy includes all affects of temperature from -20º to +50º C (-4º to +122º F)
Pressure Limits
DN sensors: 2x range when pressurized on P1 (HI) side only, 150 PSI
when applied simultaneously to P1 (HI) and P2 (LO) sides.
DI sensors: 3x range when pressurized on P1 (HI) side only,
3x range or 150 PSI (whichever is less) on P2 (LO) side only
1000 PSI when applied simultaneously to P1 (HI) and P2 (LO) sides.
CI, AI sensors: 2x range
Media Compatibility
DN sensors: Non-isolated for clean, dry, non-corrosive gases only (Brass, 316L SS, Silicon gel)
DI sensors: Isolated for fluids compatible with 316L SS and Viton
CI, AI sensors: Isolated for fluids compatible with 316L SS
Voltage & Current, Measurement, Sourcing, Sinking
DC Voltage: ±50 VDC measure, 0 – 24 VDC source
DC Current: ±100 mA DC measure, 0 – 24 mA DC source, 1 – 24 mA sink at 1-50 VDC external power
Accuracy: ± (0.015% of Reading +0.002 units)
Temperature Performance: Accuracy includes all affects of temperature from -20º to +50º C (-4º to +122º F)
Resolution (measure mode): 0.001 V, 0.001 mA or 0.0001 V, 0.0001 mA (user selectable)
Loop Power
250Ω HART® resistor included
See 24 VDC Load Curve at right
Four (4) AA alkaline batteries power a transmitter at
20 mA output for 10 hours
Temperature
Operating: -4 to 122°F (-20 to 50°C)
Storage: -40 to 140°F (-40 to 60°C)
Connections
Pressure:
1
⁄8” NPT (female)
25.0
24.0
23.0
22.0
21.0
20.0
Outp u t V o lts (V )
19.0
18.0
17.0
Electrical: Standard banana jacks on ¾” centers
Firmware updates, data retrieval: USB mini-B (female)
Power
Portable service: Four (4) AA alkaline batteries provides 30+ hours of continuous measurement service
Operation with PC: Power over USB using USB type A to mini-B cable (requires high power 500 mA port)
Enclosure: 8.5” L x 3.75” W (max.) x 2.25” D (max.), polycarbonate case, Softflex
Weight: M400 single sensor: 1.5 – 1.8 lbs, M402 dual sensor: 1.8 lbs
Consult manual located on the product CD or at www.meriam.com
instructions, software utility, and safety information!
24V Source: Typical Load Line
0 5 10 15 20 25
Current (mA)
®
over-molded bumpers, IP40
for detailed
Meriam Process Technologies • 10920 Madison Avenue • Cleveland, Ohio 44102 U.S.A.
Phone (216) 281-1100 • Fax (216) 281-0228 • www.meriam.com
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