Specifically designed for early detection of potential fire risk in pulverizing mills in coal or biomass processes, Millwatch monitors and quickly responds to sudden carbon monoxide (CO) build-up, allowing preventative action to be taken before a hazardous condition develops.

Using AMETEK Land’s unique detection system, Millwatch provides continuous, accurate monitoring of CO levels – improving process safety, protecting expensive mill equipment, and preventing costly downtime from unnecessary shutdowns.

Millwatch continuously extracts sample gases from the mill outlet for a constant, dual-sensor CO measurement. Customisable alarms adapt to individual plant process conditions, while automatic calibration ensures high measurement integrity is maintained 24/7.

Specifically designed for power generation operators who need to improve process safety in mills and pulverisers using coal and biomass fuels, Millwatch ensures the protection of people, plant and process.

Reliable Monitoring

Millwatch 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.

Fast, Continuous Measurements

Millwatch features truly continuous measurement with no multiplexing. The fast response (T90 typically < 50 seconds) to increases in CO levels provides early warning to the operator, enabling prevention of plant damage and personnel injury.

A Rugged Sample System

To ensure maximum lifetime and reliability of the detector, the mill probe uses a large area stainless steel filter and a hardened abrasion shield. Blowback keeps this filter clear, ensuring minimum downtime. Freeze-protected sample lines are available for outdoor applications.

Millwatch is AMETEK Land’s carbon monoxide detector for detection of early-stage combustion in biomass and coal mills.

 

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)