SR Series Self-Contained Two-Color Infrared Thermometers

Transcription

1 SR Series Self-Contained Two-Color Infrared Thermometers The SR series self-contained, two color infrared thermometers Introduction The SR Series infrared thermometer from Ircon is a two-color thermometer system contained within a sensor. This unique self-contained sensor design provides signal processing and conditioning within the instrument and therefore eliminates the need for a separate indicator/ processor unit. The SR Series provides a 4-20 ma or 0-10 Vdc temperature output signal directly to the user's own analog or digital display, controller, recorder or computer. The use of a single unit that doesn t require a separate electronic unit for signal processing has many advantages and benefits. For example, savings of valu able panel space, reduced installation costs especially for multiple units, and elimination of costly duplication of control instrumentation. In addition, the SR Series offers the advantage of a two color thermometer. It allows reliable temperature measurements for difficult high temperature applications where target emissivity changes; where the target is too small and/or moving and cannot be completely resolved; or for applications where the object is partly obliterated by dust, smoke, or dirty viewing windows. Reliable temperature readings are possible as long as operating wave lengths are affected equally. The SR is ideally suitable for high temperature measurements and a good choice for molten metal, wire and rod forming, vacuum furnaces, induction heating, and kiln applications. The SLR version (Single Lens Reflex) is an instrument which allows you to simply aim at the target, focus and take a reading just as easy as with an SLR camera. SLR Version The SR Series SLR Version is a two-color selfcontained infrared thermometer which provides non-contact measurement of process temperatures from 700 to 3500 C (1300 to 6500 F), with response times as fast as 0.01 seconds. This version of the SR Series contains focusable Single Lens Reflex (SLR) optics which allows the user to sight throughthe-lens to view a target. A built-in reticle aids in defining the exact spot size to be measured. The focusable optics of this instrument permits temperature measurements from varying distances from the target. Simply focus on the target and it's ready to provide accurate readings. The standard objective lens provided permits a working distance range from 380 mm (15 inches) to infinity. A 230 to 380 mm (9 to 15-inch) close focus lens is optionally available. The choice of three optical resolutions (D/50, D/100, and D/150) permits measuring targets as small as 1.5 mm (0.06 inches). Additionally, a choice of four response times is available to fit specific application needs. Components Self-contained sensor 10 m (33 foot) interconnecting cable up to 60 m (200 ft) optionally available Signal/Power Termination Box Integral AC or DC sourced Power Supply (optional)

2 General Features and Benefits n Completely self-contained two-color thermometer. n Choice of nine models for measuring temperatures from 700 to 3500 C (1300 to 6500 F) within discrete temperature ranges. n Focusable, through-the-lens viewing. n Choice of optical resolution (D/50, D/100, D/150) n Choice of fast response time 0.01 seconds (or 0.1, 1.0 or 10.0 seconds). n Choice of output signal (4-20 ma or 0-10 V). n No separate signal processing electronics required, making this instrument cost effective. n E-slope adjustment on sensor. n Invalid alarm indicator lamp and relay contact closure. SR Series SLR version with Signal/Power Termination Box Sensor The SR Series Sensor is contained within a rugged, gasket sealed casting which is dust and spray tight and is rated NEMA 4 (IP66). Its integral electro-optical circuitry and sophisticated electronics provides an accurate means of converting the infrared energy received from a target into a calibrated temperature output signal and, since signal processing is performed internally, the need for a separate processing unit is eliminated. Adjustments are easily made at the rear of the sensor for E-slope calibration. An invalid alarm indicator lamp is provided to alert the operator in case the input signal is insufficient for sensor operation. Additionally, a relay contact closure is included that can be used to operate a remote audible or visual alarm device. Specifications n 0.70 to 1.08 micron and narrow band at 1.08 micron spectral response. n Ambient temperature range from 0 to 55 C (30 to 130 F). n 0.75% accuracy of full scale temperature n Adjustable E-slope from 0.85 to 1.15; graybody, factory set. n Tolerates approximately 95% reduction in radiation intensity above 800 C (1500 F). SR Series SLR Version standard system configuration diagram SLR Sensor dimensional drawing

3 Signal/Power Termination Box The Signal/Power termination box provides the user with a con venient means to connect sensor output signal, graybody/e-slope calibration switching, power supply, and invalid alarm/contact closure. The Termination Box will accept, as standard, a customer supplied ± 15 Vdc power supply which is required to power the Sensor. Optionally, the Signal/ Power Termination Box is available with a built-in power supply that accepts either a 24 Vdc or 100 to 230 Vac power input. The power input easily connects to the wiring terminal and powers the sensor through its shielded interconnecting cable. Sensor output signals are transmitted via a 10 m (33 foot) signal cable which is simply terminated at the Signal/Power Termination Box. Convenient access is also provided for a remote invalid alarm, E-slope calibration, and load devices such as indicator/controller, recorder, computer, or other analog instruments. Signal/Power Termination Box and dimensional drawing Accessories Model WA-3 Water Cooling Accessory Available for cooling the sensor when operating in an environment that exceeds allowable maximum ambient temperatures. Water cooling effectively raises the maximum ambient temperature limit to 74 C (165 F). A nominal water flow of 40 liter/hr (10 GPH) with water temperatures below 32 C (90 F) is suitable for most applications. Model AA-3 Air Purge Available to provide a positive flow of air across the lens to keep dust, smoke, and debris from collecting on the lens. This accessory bolts to the front flange of the sensor and can be used in combi nation with other accessories such as the Model WA-3 Water Cooling Accessory. Generally, about 0.17 m 3 /min. (6 ft. 3 /min.) of air flow is suitable for most applications. SR Series SLR version shown with air purge and water cooling accessory on swivel mounting base Model WJ-5 Water Cooling Jacket Used to pro tect the SLR version sensor in ambient temperatures up to 400 F (200 C). The jacket provides water cooling via water circulation in coiled pipe embedded in the jacket walls. An air purge is included and mounted to the front of the enclosure. Model SB-1 Swivel Mounting Base accessory Model SB-1 Swivel Mounting Base Used for installations requiring good line-of-sight adjustment capa bility. It permits both tilting and panning motions, and can be locked firmly in place when optical alignment is com pleted.

4 SLR Version Specifications Temperature Measuring Range 700 to 3500 C (1300 to 6500 F) (see ordering information chart for discrete ranges). Calibration Accuracy Within 0.75% of full scale temperature or 3 C (5 F), whichever is greater. Repeatability Within 0.3% of full scale temperature. Response Time (to 95% of full scale output) 0.1, 0.01, 1.0, or 10.0 seconds, as selected. SR Series SLR version self-contained, two-color infrared thermometer Analog Output: (referenced to ground) 4-20 madc (500 ohm max.) or 0-10Vdc (less than or equal to 1 ohm source, 5 ma max.). Invalid Alarm LED visual indicator lamp on sensor backplate; relay contact closure for remote alarm. Contact ratings 24 Vdc, 250 ma. Signal Reduction Range Above 800 C (1500 F) will tolerate approximately 95% reduction in radiation intensity due to low emissivity, non-resolved target, or obliterated target. Calibration (two modes) Graybody: fixed, factory-set E-slope: factory-set for tungsten, field-adjustable. Environmentally Sealed Housing Cast aluminum construction meets NEMA 4 (IP66) standards. Spectral Response (two adjacent wavelength bands) 0.70 to 1.08 microns and narrow band centered at 1.08 microns. Ambient Temperature Range (without auxiliary cooling) 0 to 55 C (30 to 130 F). Sensor Power Requirements ± 15 Vdc, ± 200 ma (customer supplied) or optional 24 Vdc, ± 400 ma or 100 to 230 Vac, 50/ ma rms. Optical Resolution D/50, D/100, or D/150 per model selection

5 Optical Resolution Formula The SR series is sensitive to infrared radiation in an area indicated by the Cone of Vision (see diagram). The diameter of the cone at any point will determine the area of measurement (spot size) at that point. The formula below defines the spot size at the focal point. Simply divide the Working Distance "D" by the Resolution Factor "F" of the instrument to determine the Spot Size "d". Minimum object size (d) Working distance (D) Spot size is determined by the formula: d = D F where: d = Diameter of the cone at Focal Point (Spot Size) D = Distance from lens to Focal Point F = Optical Resolution Factor Cone of Vision diagram Model TV-View-VAAC Remote Digital Indicator The Model TV-View remote digital indicator is option-ally available to accept 4-20 ma output signals from the SR Series to provide a digital temperature display. The temperature range can be set to match the range of the SR in the field. Features Temperature range: Can be calibrated to match any range of SR series, C or F Signal input: 4-20 ma (zero to full scale) Ambient temperature: 0-50 C (32 to 122 F) Display: 5 digit, red LED A/D conversion rate: 20 readings per second Input power: Vac, 50/60 Hz Model Temp View remote digital indicator Options available: High and low alarms, RS485 with RS232 output Dimensions in inches (mm) Note: Recommended minimum clearance (behind the panel) for mounting clip installation is 2.1 (53.4) H x 5.5 (140) W. Temp View remote digital indicator dimensional drawing

6 SLR Version Ordering Information Chart How to determine model number: The following is an example of how to select the proper model number. Refer to the chart below for specific information. For example: Model SR-24C indicates an SR series SLR version two color self-contained thermometer operating within a temperature range of 900 to 2400 C (1652 to 4352ºF), with an optical resolution of D/50, response time of 1.0 seconds, a 4-20 madc sensor output, and a customer-supplied power supply. BLOCK MODEL A B C D E S R Model Temperature Response Range Optical Time Output Power Resolution SR Series BLOCK A S R Model Designation SR Series BLOCK B - Temperature Range and Optical Resolution 2 5 F F F F 1 5 = 1300 to 2500 F D/50 = 1800 to 3200 F D/50 = 2000 to 4000 F D/100 = 2500 to 6500 F D/ C C C C C 1 5 = 700 to 1400 C D/50 = 900 to 1600 C D/50 = 1100 to 2000 C D/100 = 900 to 2400 C D/50 = 1500 to 3500 C D/150 BLOCK C - Response Time = 0.1 seconds = 0.01 seconds = 1.0 seconds = 10.0 seconds BLOCK D - Output 0 1 = 4-20 madc (500 ohm max. grounded) = Vdc (less than or equal to 1 ohm source, 5 ma max.) BLOCK E - Power 0 = Customer-supplied (± 15 Vdc, ± 200 ma) 1 = 24 Vdc ± 400 ma 2 = 100 to 230 Vac, 50/ ma rms. The Worldwide Leader in Noncontact Temperature Measurement IRCON, Inc. Worldwide Headquarters Santa Cruz, CA USA Tel: (USA and Canada, only) info@ircon.com European Headquarters Berlin, Germany Tel: China Headquarters Beijing, China Tel: To find an IRCON office near you, please visit Worldwide Service IRCON offers services, including repair and calibration. For more information, contact your local office or info@ircon.com IRCON, Inc. ( Rev J) 6/2013 Ircon and the IRCON logo are registered trademarks of Ircon, Inc. Specifications subject to change without notice.