The 651 is designed for set-and-forget hydrogen sulfide monitoring, inside or out.
A detachable hand-held hydrogen sulfide 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 651 stations to the user’s PC.
The 651 is housed in a steel casing, insulated, air conditioned, and ready for nearly any environment.
|Detection Range:||3 ppb (0.003 ppm) to 50 ppm|
|Resolution:||0.001, 0.01, 0.1, and 1 ppm|
|Accuracy:||±0.005 ppm at 0.05 ppm
±0.05 ppm at 0.5 ppm
±0.5 ppm at 5 ppm
±2 ppm at 25 ppm
|Sample Intervals:||1, 2, 5, 10, 15, 30, 60 or 120 minutes|
|Regeneration Intervals:||6, 12, 24 and 48 hours|
|Flow Rate:||150 mL/min|
|Operating Environment:||-40 to +55°C, non-explosive, 0-100% relative humidity|
|Result Units:||ppm, ppb|
|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|
(Detatched 631-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 631-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® 651 units can be linked to form a perimeter monitoring system to help locate the source of H2S and ensure safety and compliance.
Detachable Unit: Quickly and easily sweep an area for hydrogen sulfide hot spots with the detachable, hand-held Jerome® 631-X hydrogen sulfide 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: An attached weather station monitors outside temperature as well as wind speed and direction for increased accuracy in pinpointing the source of odor 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 651 comes with programmable alarms that automatically send email alerts if your H2S levels rise above your specified upper limit.
Temperature Controlled Interior: Resistive heating and thermoelectric cooling keep the interior of the 651 at a consistent temperature for increased accuracy.
Regulatory Compliance: The 651 is in active use by many regulatory agencies and landfill, water treatment and wastewater management facilities across the world.
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|
|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 0918||Jerome® Functional Test Module, 250 ppb, 115V|
|Z2600 0930||Jerome® Functional Test Module, 30 ppb, 115V|
|Z2600 3905||Zero Air Filter|
|Z2600 3930||Scrubber Filter|
|Z2600 3933||Scrubber Filter, LFS|
|Z2600 3934||Scrubber Filter, LFD|