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E.O. 6409 JAN 2008 M1 SERIES – DIGITAL MANOMETER USER MANUAL Meriam Process Technologies’ M1 Series pressure instrument is a microcontroller-based pressure sensing device that can be used to directly measure pressure. Differential, Gauge and Absolute pressure sensors are supported up to 100 PSI.
M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 Introduction Thank you for purchasing this Meriam product. Meriam has been providing innovative, reliable, cost-effective measurement and calibration solutions since 1911. The M1 has been designed using the latest technology to provide reliable accuracy throughout its entire operating temperature range, dependable operation, and exceptional battery life.
M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 User Interface Single Keypad Functions ON/OFF (O) Key The ON/OFF key, represented by the standard ON/OFF symbol, turns the M1 ON or OFF (note: the ON/OFF key must be held until the display turns on or off).
M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 1. Zeroing the M1 To Zero the M1, first turn off pressure sources and vent pressure ports to atmosphere. Then simultaneously press and hold the F and U keys until “F.CAL” is displayed. The display will read “---- ”...
M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 Liquid Crystal Display (LCD) The LCD displays the: • Pressure or Temperature measurement via large digits, • Pressure measurement via bar graph, and • Pressure or Temperature engineering units via icons.
NORMAL mode. “user 1” and “user 2” are reserved for custom user defined “units of measure”. Contact Meriam if this support is required. Notes: Depending upon the pressure range of the M1, some engineering units may not be available (i.e. they will be skipped).
M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 Record Mode The M1 can store up to 240 pressure measurements (also called values or points) in a single record (REC) session. For maximum flexibility, a REC session can be: •...
M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 REC View: First, set the M1 to NORMAL mode (no functional mode icons on). Then enter REC View mode by pressing both the B and U keys until the REC icon illuminates.
These standards should meet the accuracy requirements for your company or industry. Meriam Process Technologies follows the guidelines established by ANSI/NCSL Z540 which requires that the primary standard be 4 times more accurate than the unit under test.
M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 SPAN First, before the M1 can be spanned, it must be zeroed. Second, to Span the M1, a calibration specific pressure must be applied. If this Span pressure is known (because the unit has been spanned previously), skip the next step.
M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 Specifications Type and Range: All sensors are non-isolated D – 28 inH2O (1 psi) D – 138 inH2O (5 psi) D – 416 inH2O (15 psi) D – 832 inH2O (30 psi) D –...
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M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 Battery Type: 3 x AA battery, field replaceable. Alkaline (A900614-00011): Duracell, PC1500, 1.5V, 2000mAh Duracell, MN1500, 1.5V, 2000mAh Varta, 4906, 1.5V, 2600mAh Battery Operation: > 300 hours continuous use without backlight on, 1 year shelf life, auto power off set at 30 minutes, low battery warning giving approximately 2 hours of run time.
Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 Certification/Safety/Warnings The following defines the certification and area classification of the M1 Series pressure instrument. Note the following WARNINGS and requirements: User must use bulkhead fitting hex surface when attaching • user’s 1/8” NPT fitting.
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M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 Remove the two screws located at the top center and bottom center of the battery cover by turning them counterclockwise until the fully disengaged from the M1 base. Lift the cover from the back of the unit.
M1 Series - DM Instruction Manual 9R000034-IR E.O. 6409 JAN 2008 User Connections Connection: 1/8” female NPT, 316SS. The pressure connections (P1 and P2) are marked on top of the keypad as shown on page 1. “D” or Differential models have 2 used pressure ports. P1 is the high pressure connection and P2 is the low pressure connection (as shown below).
Authorization (RMA) number. Meriam Process Technologies 10920 Madison Ave. Cleveland, OH 44102 Phone (216) 281-1100 FAX (216) 281-0228 All M1 Series pressure instruments recalibrated at the factory are returned with certificates of NIST traceability. GlobalTestSupply www. .com Find Quality Products Online at:...
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