IRT/C.20A BASE MODEL
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Product Overview IRt/c.20A Base Model The IRt/c.20A features: • Infrared Thermocouple IRt/c • Non-contact • Self Powered • Intrinsically Safe • Repeatability 0.02°F (0.01°C) • Interchangeability ±1% • Resolution approx. 0.0001°C • 20:1 Field of View Range Adjustment Screw: CW to Increase T/C WIRE #10-32 MOUNTING HOLES ON A 1.0" (25,4) DIA BOLT CIR., MOUNTING SCREWS PROVIDED Technical Data Target SurfaceType Sensing Range Optimum Range Selections Minimum Spot Size at dist. (with supplied apertures) Field-of-View at > min. spot Spectral Response Output Impedance Cable Dimensions Weight Housing Air Purge Lo E (metal) 1000 to 3500°F (540 to 1930°C) One model each J, K: adjustable over entire sensing range, output tables available No Aperture: 0.8" (20 mm) at <16" (400 mm) Z" Aperture: 0.5" (13 mm) at <9" (230 mm) Z" Aperture: 0.25" (6 mm) at<3.5" (90 mm) 20:1 (3°) approximately 0.1 to 5 p. 9 to 18 Kohms approx Twisted shielded pair of base thermocouple material (J,K,etc.), 3 ft (.9 m) std length, Teflon sheathed, rated to 392°F (200°C) continuous service. 4.15" x 1.375" Dia. (105 x 35 mm) 8.7 oz (248 g) with cable Stainless steel, hermetically sealed, exceeds NEMA 4,4x; IP65,67, intrinsically safe, cable shield grounded to housing and electrically isolated fromsignal Built-in; cooling capacity to 400°F (200°C) ambient; 3' (0.9 m) polyurethane tubing provided Set-up and calibration instructions For all IRt/c Models with "A" in model designation (IRt/c.xxxA) 1. Connect air purge first if installing in process already at operating temperature. Provide minimum 5 psig (30 kPa) air pressure. 2. Install IRt/c and align to view the desired target. Bring target to operating temperature if not already there. Connect leads to readout device to be used (controller, PLC, etc.). 3. If the target temperature is not known, measure the target temperature with an accurate reference. Remove the setscrew to expose the calibration screw. Adjust the calibration screw to obtain reading desired. Replace the setscrew cover when complete. For final process adjustments, the ZERO or OFFSET adjustments available on readout devices can be conveniently used. • Installation and calibration complete. • To maximize the linear range, see Tech Note #70. • Calibration screw operates like a radio volume control: clockwise increases signal. Exergen Global offices: