Silowatch

Specifically designed for detection of early-stage fire risk in storage silos for coal and biomass fuels, Silowatch continuously monitors and quickly responds to sudden carbon monoxide (CO) build-up, allowing preventative action to be taken before a fire develops.

Silowatch provides fast, accurate monitoring of CO in the silo, using AMETEK Land’s unique dual-sensor detection system. The detection of sudden CO build-up enables operators to act quickly, protecting your personnel, securing expensive silo equipment and avoiding costly downtime.

Silowatch works by extracting the sample gas from the silo headspace and continuously monitoring the CO level. Automatic calibration ensures high measurement integrity, while alarms can be customised to individual silo conditions.

Designed specific for use in coal and biomass storage silos, Silowatch ensures the protection of people, plant and process.

CONTINUOUS, RELIABLE SILO MONITORING
Silowatch has been proven in dozens of applications worldwide, providing enhanced safety and continuous monitoring. The detector’s extractive dual sensor system allows very high stability and automatic detection of calibration drift. As an additional precaution, an optional oxygen measurement is available for monitoring oxygen-limited silos.

RELIABLE, CONTINUOUS PROTECTION
The detector’s dual sensors constantly check CO levels at the silo headspace, using extractive analysis. The sensor’s fast response - T90 typically < 50 seconds - to increased CO levels provides the earliest possible warning to the operator of worsening conditions.

HAZARDOUS AREA OPTION
An optional Z-purge allows the Silowatch analyzer to be installed in Class II Div 2 hazardous areas.

Silowatch is AMETEK Land’s carbon monoxide detector for detection of spontaneous heating and spontaneous combustion in biomass and coal silos.

  APPLICATION NOTE
STRENGTHENING PLANT SAFETY IN COAL GRINDING MILLS AND STORAGE SILOS WITH CARBON MONOXIDE MONITORING
Risks of unwanted combustion – potentially causing injury, damage and downtime – occur everywhere that coal is handled, processed or stored. Safe coal handling practices are designed to ensure that the fuel remains intact throughout its journey from the mine until the point at which it is ignited in the boiler. Read More > Watch the Video >

Measurement Range
CO Measurement Ranges	0-100 up to 2000 ppm in 50 ppm steps
Resolution	1 ppm / 1 mg/m3
Optional O2 Ranges	0 - 5 % to 0 - 25 %
Calibration
Calibration Method	Automatic 2-point calibration span and zero
User Interface
Type	LCD with backlight 4 x 20 character, 8 access keys
Outputs/Inputs
Analog Output	4 to 20 mA isolated current loop for each CO & O2 measurement
Relay Outputs	2 x Level Alarms; System OK; Calibration/Maintenance
Relating Rating	Isolated changeover (Type C) 1 A @ 240 V a.c. or 5 A @ 240 V d.c.
Environmental
System Enclosure	Painted steel, sealed IP65 / NEMA 4
Ambient Temperature	0 to 45 °C / 32 to 113 °F standard; to -20 °C / -4 °F with optional case heater; to 50 °C / 122 °F with optional vortex cooler
Compliance
EMC	Conforms to EN-50 081 & EN-50 082
Electrical Safety	Conforms to EN-61010-2
Power
Power Supply	100 - 120 V a.c. or 190 to 240 V a.c., 50-60 Hz, 300 VA
Gas and Air Requirements
Instrument Air (cooling)	5 - 10 bar / 70 - 150 psi clean and dry, 300 l/min/10.5 cfm
Calibration Gas	100 ppm to 500 ppm CO, balance N2 recommended 2 bar / 30 psi 20 litres (0.7 cu.ft.) per calibration approx.
Mechanical
Size (H x W x D)	600 x 600 x 350 mm / 24 x 24 x 14 in.
Weight	53 kg . 117 lb.
Options	Twin Stream CO System Sample Probe and Lines Heating / Cooling Z-purge for hazardous area operation Oxygen measurement (Single Stream only)

MARCOM0367