The PRO 90 Dual-Wavelength Sensors with Fiber Optics are used with applications involving greybody materials,  like nonferrous metals, to automatically compensate for any variations in emissivity.  These sensors are also used to compensate for difficult application issues such as misalignment or intervening media. With the fiber optic configuration, it is possible to view a target and mount the sensor electronics in a remote or more convenient location.  This provides greater durability and flexibility
with sensor installations that involve confined
spaces and/or severe environments. 

Standard Features:

• A wide selection of temperature ranges and optics
• Fiber optic alignment with a small, sealed fiber cable
• Optional Integrated Aim Light to verify alignment
• An intuitive Text based user interface
• Programmable outputs and alarms for measured target temperature, signal strength emissivity), signal dilution, and ambient temperature
• Advanced ESP Filters for Signal Strength and Signal Dilution
• Bi-directional RS485 and RS232 communications
• Advanced system diagnostics and status messages
• Rugged, corrosion resistant NEMA 4 / IP65 enclosures
• Stand alone and system configurations
• A wide selection of accessories

Unique Features:

All of Williamson’s fiber optic sensors use a small, sealed fiber optic cable with an ambient limit of 400°F (200°C) to enable access to difficult to reach targets and to survive hostile operating conditions.  In addition, Williamson offers several unique fiber cable options that can enable measurements on applications that were previously considered difficult to measure.  This includes the ArmorGuard System, the Stainless Steel Braid System, and the Gooseneck System.

With a unique single detector design and the industry’s highest signal dilution factor, Williamson’s dual-wavelength sensors can outperform all other ratio sensors when demanding application issues exist. Typical difficult application issues include:

• Low or varying emissivity
• Intervening Media such as dirty optics, scale, smoke, steam, dust, or water spray
• A partially filled field of view caused by a mechanical obstruction or a small or wandering target

With their advanced design, these dual wavelength sensors include the patented ESP Filters that can be easily programmed to filter out bad readings on challenging applications.

PRO 90 SERIES – Fiber Optic, Dual Wavelength (2 l ) Sensors
Model	Nominal Wavelength	Temperature Range		Optical Resolution			20:1 Signal Dilution	Top End Signal Dilution	Type of Cable	Max Length
		Fahrenheit	Celsius	No Lens	Std Res.	Hi Res.
Sensors for Demanding Applications -
92-20	2 m m	400-1100	200-600	D/2	D/12	D/50	525°F 275°C	2000:1	Quartz	3ft 91cm
92-25	2 m m	500-1100	260-600	D/2	D/35	D/50	525°F 275°C	2000:1	Quartz	3ft 91cm
92-40	2 m m	900-2700	475-1475	D/2	D/50	D/75	1025°F 550°C	2000:1	Quartz	6ft 1.8m
91-10	1.5 m m	700-2100	375-1150	D/2	D/35	D/50	925°F 500°C	6000:1	Quartz	30ft 9.1m
91-15	1.5 m m	750-2500	400-1375	D/2	D/35	D/50	1000°F 540°C	6000:1	Quartz	30ft 9.1m
91-20	1.5 m m	900-3200	475-1750	D/2	D/50	D/75	1225°F 660°C	6000:1	Quartz	30ft 9.1m
91-30	1.5 m m	1000-4000	550-2200	D/2	D/50	D/75	1325°F 720°C	6000:1	Quartz	30ft 9.1m
91-40	1 m m	1100-2000	600-1100	D/.75	D/12	D/50	1300°F 700°C	2250:1	Glass	20ft 6m
91-50	1 m m	1300-2500	700-1375	D/.75	D/35	D/50	1500°F 815°C	2250:1	Glass	25ft 7.6m
91-65	1 m m	1600-3200	875-1750	D/.75	D/50	D/75	1800°F 980°C	2250:1	Glass	30ft 9.1m
91-70	1 m m	1700-4500	925-2475	D/.75	D/50	D/75	2275°F 1250°C	2250:1	Glass	30ft 9.1m

Options and Accessories:

• 23 – Remote Interface Module with Power Supply
• PS – Universal Power Supply
• AL – Integrated Aim Light
• FOSB – Fiber Optic Swivel Bracket
• AP - Air Purge
• WCAP - Water Cooling Air Purge
• AG - ArmorGuard System
• SSB - Stainless Steel Braid System
• GN - Gooseneck System

Other Resources to Download:

PRO Series Brochure
Dual Wavelength Temperature Systems Brochure

PRO 80 & 90 Datasheet
Application Worksheet