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Meriam 3900

Meriam 3900
         
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MeriGauge Portable Indicator

Features

 
  • ? 0.1% Full Scale accuracy
  • Temperature compensation
  • Vacuum to 6000 PSIG
  • Stem or Panel Mounting
  • Battery power
  • Field re-calibration feature
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Product Information

3900 / 3910 MeriGauge Portable Indicator

Digital Pressure Gauge

The MERIGAUGE digital pressure gauge from Meriam Instrument successfully addresses the modern demands of process pressure measurement. Pressure ranges are available to 6,000 PSIG at standard accuracy of ? 0.25% of Full Scale and optional accuracy of ? 0.10% of full scale. A combination gauge that can be used for positive pressure measurements and vacuum measurements is also available. The standard gauge is powered by two 9 volt alkaline or lithium batteries. Externally powered units are available. The pressure display is a 4 1/2" digit LCD with 0.6" high numerals. Each gauge includes 12 field selectable engineering units. The selectable units include PSIG, feet of water, inches of water, inches of the mercury, Bar, millimeters of mercury, kilopascals and user configurable units. In addition to numeric pressure indication, visual indication of the pressure is represented by an adjustable vertical bar graph on the left side of the display. Other standard features include Min/Max query, Zeroing, selectable Damping, selectable program Lock-out, adjustable display shutoff and field recalibration and adjustable display shutoff (for battery powered models). The housing is 304 stainless steel and NEMA 4 rated. Wetted components are 316 stainless steel for compatibility with many process fluids. Process connection is via a 1/4" MNPT 316 stainless steel stem.

Typical applications are instrumentation and control in the process industries, hydraulics, pneumatics, industrial gases and OEM?s. Options such as panel mounting, 24 Vdc powered units, 4 to 20 mA output, adjustable SPDT relay outputs, and various style diaphragm seals add to the versatility of the MERIGAUGE.

Standard Features

SELECTION OF ENGINEERING UNITS:
PSIG, Ft. H2O, In. H2O (60? F, 20? C, 4? C), In. Hg, Bar, mm Hg, kPa, & user selectable units

FIELD RECALIBRATION:
Recalibration can be done at any time using an accurate standard pressure reference.

SHUTOFF TIMER:
(available on battery powered units) Selectable from off to 50 minutes.

MIN/MAX:
Capture and display pressure extremes.

DAMPING:
Provides a stable pressure indication by averaging pressure measurements. Selectable from off to 50 seconds.

BARLo & BARHi:
A user scalable Bar Graph for visual indication of any pressure range. Default is 0 to100% of full scale range.

Options

24 VDC POWERED UNITS:
External powered units for extended gauge operation and for gauges with output options. Compliance voltage: 17 VDC to 30 VDC.

Intrinsically Safe (CSA) and CE APPROVAL:
Intrinsically Safe/CSA approval for use in Class 1, Division 1, Groups A,B,C,D environments (battery units only, others pending). CE approval for use in the European markets.

4 to 20 mA or 1-5 VDC OUTPUT:
Provides remote pressure monitoring. Fully adjustable throughout the gauge full scale range. Two wire configuration with a 6 foot pigtail and four wire configuration available for 4-20 mA. Four wire configuration for 1-5 VDC.

SPDT RELAY OUTPUTS:
Provides two adjustable SPDT relays that can be integrated in a control circuit to activate an external device such as a warning light, valve, solenoid, etc... Adjustable throughout the gauge full scale pressure range with adjustable deadband. Relay contacts are rated for 0.5 Amp @120 VAC and 1 Amp resistive @ 30 VDC.

PANEL MOUNTING:
Provides integral panel mounting bracket with rear pressure connection.

DIAPHRAGM SEALS:
Various sizes and styles of diaphragm seals including threaded, flanged and sanitary provide gauge to process isolation. Sanitary diaphragm seals are available for food and pharmaceutical applications.

Specifications

 
Accuracy 3900: ±0.25% of Full Scale at calibrated temperature.
3910: ±0.10% of Full Scale at calibrated temperature.
Temperature Effect: All units compensated to ±0.01% of F.S. per ?C.
Display 4 1/2 digit LCD (0.6" high), 0 - 100%
vertical bar graph, Unit Indication, Low battery indicator.
Power Options Two 9 volt alkaline batteries (included)
Lithium batteries for use below 32?F (0?C)
24VDC or 110 VAC with optional adaptor.
Enclosure NEMA 4, 304 stainless steel
Media Compatibility Isolated sensor for processes compatible with 316SS
Process Connection 1/4" male NPT, 316SS
Over-Pressure Limits Twice the full scale range
Weight 25 ounces
Temperature Storage: -40?F to 158?F (-40?C to 70?C)
Operating: 32?F to 140?F (0?C to 60?C)
 
3900/3910 MERIGAUGE Ordering Information
±0.25% FS Models Pressure Ranges   Options
3900-GI0010-XX-Y-ZZ 0 - 10 PSIG XX= 01: Pipe Mount (battery power)
3900-GI0050    " 0 - 50 PSIG 02: Pipe Mount (external power)
3900-GI0100    " 0 - 100 PSIG 03: Panel Mount (battery power)
3900-GI0500    " 0 - 500 PSIG 4: Panel Mount (external power)
3900-GI1000    " 0 - 1000 PSIG Y= 1: Battery Power
3900-GI1500    " 0 - 1500 PSIG 2: 24VDC Power (2 wire)
3900-GI3000    " 0 - 3000 PSIG 3: 4-20mA output (2 wire)
3900-GI5000    " 0 - 5000 PSIG 4: 24VDC, 4-20mA (4 wire)
3900-GI6000    " 0 - 6000 PSIG 5: 24VDC, 2 relay outputs
3900-VI0050    " Vacuum - 0 - 50 PSIG 6: 24VDC, 2 relays, 4-20mA
  7: 24VDC, 1-5 VDC (4 wire) output
  8: 24VDC, 2 relays, 1-5 VDC
±0.10% FS Models
3910-Same pressure ranges and options as 3900 ZZ= 01: CE Approval
02: CSA/Intrinsically Safe Approval

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