AMETEK Brookfield

- Model 451 - Gold Film Fence-line Mercury Monitoring System

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The Jerome 451 monitoring system from Arizona Instrument is the tool you need to solve your mercury monitoring problems. Designed to provide long-term monitoring even in extreme weather conditions, it can be stationed at any location that requires monitoring. Multiple units can also be linked to form a perimeter monitoring system. Data logging and radio telemetry capabilities make downloading data convenient and easy from a remote PC.

  • Unattended : The 451 is designed for set-and-forget mercury vapor monitoring, inside or out.
  • Flexible : A detachable hand-held mercury vapor analyzer is contained within the unit for pinpointing a gas source.
  • Smart Alarms : Define alarm points that meet your needs and receive email notifications and warnings.
  • Wireless : Measurement data is transmitted wirelessly from 451 stations to the user’s PC.
  • Rugged : The 451 is housed in a steel casing, insulated, air conditioned and ready for any environment.

Instrument Specifications

  • Detection Range: 0.003 mg/m3 to 0.999 mg/m3
  • Resolution: 0.001 mg/m3
  • Accuracy: ±8% at 0.100 mg/m3
  • Sample Intervals: 1, 2, 5, 10, 15, 30, 60 or 120 minutes
  • Regeneration Intervals: 6, 12, 24 and 48 hours
  • Flow Rate: 750 mL/min
  • Operating Environment:  -40 to +55°C, non-explosive, 0-100% relative humidity
  • Results: mg/m3
  • Data Storage Capacity: 50,000 readings
  • Power Requirements (651 Unit):
    • 100-120 VAC, 50/60 Hz, 7 A or
    • 210-240 VAC, 50/60 Hz, 4 A
  • Control Board Fuse: Fast-acting IEC 1.6 A 250 V, 5 mm x 20 mm
  • Case Construction: Polyester with insulation to reduce heat transfer
  • Battery (631-X Unit):
    • Rechargeable NiCad
    • 6 hour life, charges in 14 hours
    • *only applicable when 431-X unit is not attached to 451
  • Estimated Sensor Life: 3 to 6 months depending on operating conditions
  • Display: 8 digit alphanumeric LCD
  • Output:
    • Spectra Radio
    • Analog: 4-20 mA current loop
  • Dimensions: 26″ W x 25″ H x 9″ D (67 cm W x 64 cm H x 23 cm D)
  • Weight: 52 lbs. (24 kg)
  • Warranty: 1 year, factory parts and labor except for 431-X sensor

Spectra Radio Modem Specifications

  • Frequency: 2.4 – 2.4835 GHz (2400 MHz)
  • 49 selectable channels
  • Serial Interface: RS-232
  • Power Requirements: 10-30 VDC, 450 mA
  • Operating Temperature: -40°C to 75°C
  • Range:
    • Up to 4 miles (6.4 km) “line of sight.”
    • Longer distances may be obtainable
    • through use of a high gain antenna or by using the optional Radio Repeater

  • Gold Film Sensor: Validated in the field and in the lab for over 35 years, our proprietary gold film sensor ensures repeatable results across a wide range of applications.
  • Detachable Unit: Quickly and easily sweep an area for mercury hot spots with the detachable, hand-held Jerome 431-X mercury vapor analyzer.
  • Perimeter Monitoring: Multiple 451 units can be linked to form a perimeter monitoring system to help locate the source of mercury contamination and ensure safety and compliance.
  • Weather Station: The attached weather station monitors outside temperature as well as wind speed and direction for increased accuracy in pinpointing the source of mercury contamination.
  • Data Transmission: Advanced data logging and radio telemetry capabilities make downloading data to a remote PC easy and convenient.
  • PC Software: Intuitive PC software with user selectable time-weighted average reporting and a site view tab give users a bird’s eye view of the monitoring system as a whole.
  • Programmable Alarms: The 451 comes with programmable alarms that automatically send email alerts if your mercury levels rise above your specified upper limit.
  • Temperature Controlled Interior: Resistive heating and thermoelectric cooling keep the interior of the 451 at a consistent temperature for increased accuracy.
  • Regulatory Compliance: The 451 meets and exceeds OSHA, NIOSH, ACGIH and MSHA action levels, making it ideal for monitoring mercury levels in high-risk areas, such as in industrial hygiene and mining.

  • Part Number: Description
  • 200-0173: Antenna, 2400 MHz, 8 DB (High Gain)
  • 200-0181: Lightning Arrestor, 2400 MHZ
  • 980-0010: Wind Gauge (Anemometer)
  • 990-0194: Thermo-Electric Cooler
  • Y431 0902: Functional Test Kit w/Mercury
  • Y990-0191: Functional Test Kit w/o Mercury
  • Y990-0192: Accessory Kit
  • Y990-0195: Flow Pump Kit
  • Y990-0199: Spectra Modem 2.4 GHz Kit
  • Y990-0200: Chlorine Filter Kit
  • Y990-0202: Ammonia Filter Kit
  • Y990-0203: Radio Repeater Kit
  • Z2600 3905: Zero Air Filter
  • Z2600 3928: C/M Filter

  • Part Number: Description
  • 800-0065: Vacushield Filter
  • 2300 0001: Trimmer Tool
  • 2600 3036: Rubber Stopper #9, 2-Hole
  • 2600 3039: Pack of 20 Fritware, .25 cm diameter
  • PS-151: Tube Nut
  • Y2600 3945: Straight Intake Kit
  • Z2600 3903: Acidic Gas Filter
  • Z2600 3930: Scrubber Filter Assembly

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