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.

  • Gold Film Sensor
  • Detachable Unit
  • Perimeter Monitoring
  • Weather Station
  • Data Transmission
  • Programmable Alarms
  • Temperature Controlled Interior
  • Regulatory Compliance


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


  • First Responders
  • Biomass
  • Industrial Hygiene
  • Paints and Coatings

Make an Enquiry