Jerome® 631-X
Hydrogen Sulfide Analyzer
With the push of a single button, the portable Jerome® 631-X hydrogen sulfide analyzer displays low-level
concentrations in just seconds. It offers an analysis range of 0.003-50 ppm for odor and corrosion control, safety, and leak
detection in such industries as wastewater treatment, oil and gas, pulp and paper, and farming. This simple-to-use instrument
weighs only 7 pounds, utilizes an internal rechargeable battery pack or AC power, and is easily carried to suspected sources of
hydrogen sulfide for detection and measurement. Locked in survey mode, the 631-X automatically displays hydrogen sulfide
concentrations as quickly as every 3 seconds.
The Jerome® 631-X utilizes a patented gold film sensor. The instrument’s selectivity to hydrogen sulfide
eliminates interferences from sulfur dioxide, carbon dioxide, carbon monoxide, and water vapors. When the sample button is pressed,
an internal pump draws air into the instrument. Any hydrogen sulfide in the sample is absorbed by the sensor which registers a
proportional change in electrical resistance. The hydrogen sulfide concentration is displayed on the LCD, where it remains until
the next sample is taken.
Additional accessories are available to customize the Jerome® 631-X to meet individual application needs. For
unattended sampling, the instrument can be programmed by a computer using the Jerome® Communication Software (JCS).
A data logger plugs into the back of the instrument for data acquisition during portable surveys or unattended sampling without a
computer. Recorded data can be downloaded later to a computer using the JCS software for analysis, printout, and permanent record
keeping.
An available internal option board allows auto-zeroing, DC power operation, timed regeneration, and timed sampling during prolonged,
unattended sampling periods. The option board also allows external fresh air solenoid support and 4-20 mA or 0-2 V analog output.
Instrument calibration can be verified in the field using the Functional Test Module (FTM). A molded hard carrying case or soft
field case give added versatility and organized storage for the instrument and its accessories.
- Rugged design
- Easy to operate
- Inherently stable gold film sensor
- Pressure sensitive membrane switch operation
- Rechargeable internal battery pack for portability
- Wide detection range allows for multiple applications
- Automatic LCD backlight during low light conditions
- Survey mode for rapid source detection of hydrogen sulfide concentrations
- Microprocessor ensures a linear response throughout the entire range of the sensor
| Resolution | 0.001 ppm at Range 0 to 1 ppm at Range 3 |
| Detection Range | 0.003-50 ppm |
| Precision | 5% Relative Standard Deviation |
| Accuracy | Range 0: ±0.003 ppm at 0.050 ppm
Range 1: ±0.03 ppm at 0.50 ppm
Range 2: ±0.3 ppm at 5.0 ppm
Range 3: ±2 ppm at 25 ppm |
| Response Time |
| Sample Mode: | Survey Mode: |
| 10-50 ppm in 13 sec | 10-50 ppm in 3 sec |
| 1.0-10.0 ppm in 16 sec | 1.0-10.0 ppm in 6 sec |
| 0.10-1.00 ppm in 25 sec | 0.10-1.00 ppm in 15 sec |
| 0.001-0.100 ppm in 30 sec | 0.001-0.100 ppm in 20 sec |
|
| Flow Rate | 150 cc/min or 0.15 l/min |
| Power Requirements | 100-120 V~, 50/60 Hz, 1 amp or 220-240 V~, 50/60 Hz, 1 amp |
| Internal Battery Pack | Rechargeable nickel-cadmium (NiCad) |
| Environmental Range | 0-40°C, non-condensing, non-explosive |
| Interface | RS-232 PC using Jerome® Communications Software |
| Dimensions | 631-X: 6" W x 13" L x 4" H/ 16 cm W x 33 cm L x 10 cm H
631-XE: 7"
W x 14" L x 7" H / 18 cm W x 35 cm L x 18 cm H |
| Weight | 631-X: 7 lbs / 3 kg
631-XE: 8 lbs / 3.5 kg |
| Warranty | 1 year, factory parts and labor |
| Marks | European Communities (CE) for 220-240 V~ model only |
- Functional Test Kit for sensor operation verification in the field (30 or 250 ppb)
- Data Logger to record field monitoring information
- Maintenance Kit for routine maintenance and upkeep
- Hard or Soft Field Carrying Case for versatile handling and additional storage
- Jerome® Communications Software Kit for downloading information from the data logger to a PC or for
unattended, fixed-point sampling
- Option Board for external fresh air solenoid support, auto-zeroing, DC power operation, timed regeneration, 4-20 mA or 0-2 V
analog output, and timed sampling