美國 Meriam M3500新一代工業壓力變送器
名稱：壓力表
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簡介：美國 Meriam M3500 系列新一代工業壓力變送器的詳細介紹 M3500 系列新一代工業壓力變送器 Pressure ranges: Lower Sensor Limit (LSL) to Upper Sensor Limit (US...
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美國 Meriam M3500 系列新一代工業壓力變送器的詳細介紹
M3500 系列新一代工業壓力變送器
Pressure ranges: Lower Sensor Limit (LSL) to Upper Sensor Limit (USL) listed below:
Differential [DI]: 0-1, 0-5, 0-15, 0-30, 0-100, 0-300, 0-500 PSID
Gauge [GI]: 0-15, 0-30, 0-50, 0-100, 0-300, 0-500, 0-1000, 0-3000 PSIG
Compound [CI] (PSIG): -15 to +15, -15 to +30, -15 to +50, -15 to +100, -15 to 300,
-15 to +500, -15 to +1000, -15 to + 3000 PSIG
Absolute [AI]: 0-17.4, 0-38.7, 0-100, 0-1000 PSIA
Measurement Accuracy: ±0.025% FS including all effects of linearity, hysteresis, repeatability and temperature from -20º to +50º C (-4º to +122º F)
Output (mA / V) accuracy: ±0.05% FS including all effects of linearity, hysteresis, repeatability and temperature from -20º to +50º C (-4º to +122º F)
Traceability: NIST traceable certification is standard
Analog Span Limit
DI ,GI, and CI types: 4:1 turndown from Upper Sensor Limit (USL)
AI: 2:1 turndown from Upper Sensor Limit (USL)
Overpressure Limits
DI: 1000 PSI common mode pressure
P1 (High) side only: 3x range
P2 (Low) side only: 3x range or 150 PSI, whichever is less
GI, CI, AI: 2x Full Scale
Differential Pressure Sensors
Static Pressure effect on zero: worst case 0.025% URL per 100 PSI. See User’s Manual for further details. This effect can be corrected by zeroing the unit at the desired static pressure using an equalizing manifold.
Static Pressure effect on accuracy: worst case 0.1% URL per 100 PSI. See User’s Manual for details.
Orientation effect on zero: installation orientations different from factory calibration orientation may cause zero offsets up to 1% F.S. on some ranges. Zero the M3500 in its installed position to eliminate zero offset.
Temperature Specifications
Operating Range: -20º to +70° C (-4º to +158° F)
Calibrated Range: -20º to +50º C (-4º to +122º F)
Storage Range: -20º to +70° C (-20º to +158° F)
Temperature effect on output accuracy when above 50º C: standard accuracy +0.005% F.S. per ºC
Wetted Parts
DI: 316L SS and Viton® (Kalrez available, consult factory for other o-ring
material options)
GI, CI, AI: 316L SS
Damping: Exponential damping with user adjustable time constant, 0 (Off) to 60 seconds
Sensor Zero: push button or HART®. Differential Pressure units can have zero fully elevated
or suppressed within the Lower and Upper Sensor Limit
Trims: analog trims, lower sensor trim and upper sensor trim are available via push button or HART®
mA output failure modes:
Saturation values: 3.9 mA and 20.48 mA
Failure values: 3.8 mA and 22.5 mA
Internal electronics temperature measurement available from display and via HART®.
Pressure Applications: differential, vacuum, compound, gauge or absolute
Pressure Units:
PSI, inches of Water (ref. 20°C, 60°F and 4°C), kg/cm2, MPa, kPa, Pa, mbar, bar, cm of Water (ref. 20°C and 4°C), ft of Water (ref. 20°C, 60°F and 4°C), inches of Mercury @ 0°C, mm of Mercury @0°C, oz/sq in, User defined unit (linear scaling constant from PSI)
Flow applications: Square Root (Sq. Rt.) or Laminar Flow Element (Classical B & C method) applications
Flow Units:
Volume flow: m3, l (liters), yd3, ft3, in3, US gal (US gallons), I gal (Imperial gallons),bbl (barrel), User defined unit
Mass flow: lbs, tons, kg, STon (Short Tons), LTon (Long Tons), User defined unit
Time: seconds, minutes, hours, days
Flow related features:
Low Flow cut off value
Total flow since last reset
Reset total flow register to zero
Total non-resettable flow
Level applications: Supports direct head and bubbler type level calculations for linear tanks (vertical), non-linear tanks (horizontal, cylindrical [flat or dished ends] and spherical), and custom strapping tables.
Level Units:
Height: yards, feet, inches, meters, centimeters, millimeters
Liquid volume: cubic inches, US gallons, Imperial gallon, barrels, cubic meters, liters, cubic yards, cubic feet, percent, user defined unit (linear scaling constant)
Liquid mass: pounds, tons, kilograms, Short Tons, Long Tons, percent, user defined unit (linear scaling constant)
Enclosure: Aluminum casting, designed to
NEMA 4 requirements
Front and rear caps secured with set screws
Dimensions: 5.12” L x 3.56” Dia. x 4.57” H
Weight: 2.7 – 3.0 lbs
Conduit connections: ½” NPT (female), 2 ea., 1 permanent plug included
Pressure Manifold:
Material: 316L SS
Pressure connection(s): 1/8” NPT (female) for all pressure sensor types
1/8” NPT(M) x ¼” NPT(F) 316L SS adapter(s) are included
Differential Pressure models are available with a standard 2 port manifold or optional 4 port manifold with bleed/flushing connections and plugs (5/16 – 24 SAE/MS J1926)
Display – 2 line LCD
Upper line for up to 5 numeric characters
Lower line for up to 6 alphanumeric characters
Update rate: 3x per second
Floating decimal point
Display orientation to be specified with order:
Standard, Clockwise [90º], Reverse [180º], or
Counterclockwise [270º] orientation
Name plate:
The name plate on top of the M3500 provides model and serial numbers plus other specifications. Loosen the lower right screw and slide to access the keypad.
Keypad:
Located under the name plate, the keypad consists of 4 arrow keys used for manual programming and trim adjustments (sensor zero, lower sensor trim, upper sensor trim and analog trims).
Electrical connections:
Six (6) position terminal block for
• Loop Power & Communication (2- wire)
• Two opto-coupler SPST switches
• 1.3 mm diameter holes suitable for 16 – 25
gauge solid or stranded wire
Case grounding screw
Test tabs for mA output
Comm tabs for HART® communications
Power: 16 – 45 V DC
Load Curve: Maximum Loop Resistance = (50 * Power Supply Voltage) - 800
Note: HART communication requires a minimum loop resistance of 250Ω (21V DC)
Outputs:
4 – 20 mA (2-wire)
HART® digital protocol
Two each, solid state opto-coupler SPST switches
Rating: DC, 0.25 mA max., Von = 0.7 V DC, Voff = 5.4V DC
Certifications: CE Mark
Environmental
Humidity Limits: 5 – 95% RH
Shock, Operating: 30 g, halve-sine, 11mSec pulse (tested in accordance with IEC-60068-2-27)
Vibration, Sinusoidal, Operating: 2g peak acceleration at 5-500 Hz (tested in accordance with IEC-60068-Vibration, Random, Operating: 6g rms acceleration at 5 to 2000 Hz (tested in accordance with IEC-60068-2-64)
Mounting
2” pipe mount with bracket, 316SS, for horizontal or vertical orientation mountings. Includes 2” U-bolts and hardware (zinc plated CS).
Standard bracket accommodates pipe mount or surface mounting
Standard Accessories
P/N Z1065 NIST Certificate with data
P/N Z9A683-1 1/8” NPT(M) x ¼” NPT(F) adapter (1 each for AI, CI and GI models), 316L SS
P/N Z9A683-2 1/8” NPT(M) x ¼” NPT(F) adapters (2 each for DI models), 316L SS
P/N Z9P120 Mounting bracket, 316 SS
P/N Z9A64 Mounting hardware kit, zinc plated CS, U-bolts (2 ea.), nuts, washers
P/N Z9R86 User’s Manual
Optional Accessories, Certifications and Tests
P/N Z1089 3-valve equalizing manifold kit, 316L SS, c/w pre-bent tubing & tube fittings
P/N Z9P130 Material Certification
P/N ZA33559 Hydrostatic Pressure Test
P/N Z1077 Tag, wired SS
