The 451 is designed for set-and-forget mercury vapor monitoring, inside or out.
A detachable hand-held mercury vapor analyzer is contained within the unit for pinpointing a gas source.
Define alarm points that meet your needs and receive email notifications and warnings.
Measurement data is transmitted wirelessly from 451 stations to the user’s PC.
The 451 is housed in a steel casing, insulated, air conditioned and ready for nearly any environment.
|Detection Range:||0.003 mg/m3 to 0.999 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|
|Data Storage Capacity:||50,000 readings|
|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):
6 hour life
|Estimated Sensor Life:||3 to 6 months depending on operating conditions|
|Display:||8 digit alphanumeric LCD|
Analog: 4-20 mA passive 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
|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
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
|200-0173||Antenna, 2400 MHz, 8 DB (High Gain)|
|200-0181||Lightning Arrestor, 2400 MHZ|
|980-0010||Wind Gauge (Anemometer)|
|2300 0001||Trimmer Tool|
|2600 3036||Rubber Stopper #9, 2-Hole|
|2600 3039||Pack of 20 Fritware, .25 cm diameter|
|Y431 0902||Functional Test Kit w/Mercury|
|Y990-0191||Functional Test Kit w/o Mercury|
|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|