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Jerome® 451

Gold Film Fence-line Mercury Monitoring System

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 rough 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 Nema-rated plastic box, insulated, air conditioned and ready for nearly any environment.

Contact our sales team for more information on our Jerome series.

  • Specifications +

    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
    Result Units: mg/m3
    Data Storage Capacity: 50,000 readings
    Power Requirements
    (451 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
    (Detached 431-X Unit):
    Rechargeable NiCad
    6 hour life
    Estimated Sensor Life: 3 to 6 months depending on operating conditions
    Display: 8 digit alphanumeric LCD
    Output: Spectra Radio
    Analog: 4-20 mA passive current loop
    XE Model: 8 lbs. (3.5 kg)
    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
  • Features +

    Perimeter Monitoring: Multiple Jerome® 451 units can be linked to form a perimeter monitoring system to help locate the source of mercury contamination and ensure safety and compliance.

    Detachable Unit: Quickly and easily sweep an area for mercury hot spots with the detachable, hand-held Jerome® 431-X mercury vapor analyzer.

    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.

    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.

  • Documents & Downloads +

  • Accessories, Parts & Consumables +

    Part Number Description
    200-0173 Antenna, 2400 MHz, 8 DB (High Gain)
    200-0181 Lightning Arrestor, 2400 MHZ
    800-0065 Vacushield Filter
    980-0010 Wind Gauge (Anemometer)
    990-0194 Thermo-Electric Cooler
    2300 0001 Trimmer Tool
    2600 3036 Rubber Stopper #9, 2-Hole
    2600 3039 Pack of 20 Fritware, .25 cm diameter
    PS-151 Tube Nut
    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
    Y2600 3945 Straight Intake Kit
    Z2600 3903 Acidic Gas Filter
    Z2600 3905 Zero Air Filter
    Z2600 3928 C/M Filter
    Z2600 3930 Scrubber Filter Assembly

For Immediate assistance,
Call 1-508-946-6200 (US ET)
Monday - Friday from 8:00AM - 5:00PM