Transducer Display and Monitor
A i r Ve l o c i t y Transducer Display and Monitor The TSI Transducer Display & Monitor provides a scaleable digital display for transducers with current or voltage outputs. The monitor’s variable time constant controls the response time of the display. High and low alarms can indicate readings outside of a user-defined range. These alarms can be audible, visual and/or remote via relay contacts. The Transducer Display & Monitor also provides 500 mA of unregulated 12 VDC power to operate your transducer. The microprocessor-based design provides flexibility through menu-driven, field selectable options including signal input, full scale reading, time constant and alarm levels. Field Selectable Options • Signal input (0-5 VDC, 0-10 VDC, 1-5 VDC, 2-10 VDC, 0-20 mA, 4-20 mA) • Full scale reading (0.1000 to 99990) • Zero adjust (0.1000 to 99.99) • Span adjust (0.1 to 1.9) • Low alarm (0 to full scale) • High alarm (0 to full scale) • Audible alarm/mute • Time constant (1 to 20 seconds) • Visual alarm latched or unlatched • Relays latched or unlatched Model 8495 The Transducer Display & Monitor Model 8495 is an ideal accessory for TSI’s Air Velocity Transducers, providing flexibility in outputs while also powering the transducer. The adjustable full scale reading allows you to scale the display to fit your application. For example, if mounting the transducer in a duct, you can select a full scale reading that includes a multiplication factor to convert to units of volumetric flow rate or even mass flow rate. The span adjustment can be used as a density correction factor, allowing you to correct the readings for changes in temperature or pressure. When using an air velocity transducer in a fluctuating flow, increasing the variable time constant will provide a more stable display of velocity or flow. If monitoring velocity or flow in a critical process application, using the high and low alarms will indicate readings outside of an acceptable range. When using the TRANSDUCER DISPLAY & MONITOR with the TSI CERTIFIER® Air Velocity Calibrator, the unit will display actual air velocity. Entering a density correction factor automatically converts the velocity to standard conditions. This allows the user to read air velocity directly from the Transducer Display & Monitor instead of reading pressure and then calculating velocity. TSI instruments are backed by more than 38 years of experience in air flow measurement technology. It’s this type of experience and innovation that provides you with accurate and reliable instruments. Along with TSI’s expertise, each instrument is backed by a two year limited warranty and a great service policy. In addition to fast service, calibrations are NIST* traceable and a free certificate of calibration is included. Specifications Model 8495 Full Scale Value 0.1000 to 1.0000 1.000 to 10.000 10.00 to 100.00 100.0 to 1000.0 1000 to 10000 10010 to 99990 Resolution 0.0001 0.001 0.01 0.1 1 10 Accuracy(1&2) Time Constant Transducer Connections Display Output Power Signal Input Ranges Temperature Stability Temperature Range Input Impedance Input Power Power Consumption Housing Dimensions ±.25% of reading ±1 digit of resolution 1 to 20 seconds in 1 second intervals Detachable terminal strip 5 digit LED 12 VDC unregulated, supplies 500 mA minimum with TSI-supplied AC Adapter 0-5VDC, 1-5VDC, 0-10VDC, 2-10VDC, 0-20mA, or 4-20mA 0.0014%/°F (0.003%/°C) 32 to 122°F (0 to 50°C) Greater than 500KΩ for 0-5 V input, greater than 1MΩ for 0-10 V input, 250Ω for current input 11-30 VDC or 18-28 VAC, requires 500 mA maximum 19VA maximum ABS plastic 8.0 in. × 6.2 in. × 2.5 in. (20.3 cm × 15.8 cm × 6.5 cm) * National Institute of Standards and Technology. 1 ±.02% of reading/°C = .01% of reading/°F away from 25°C. 2 ±.025% of full scale = effect of EMI per IEC801-3. Specifications subject to change without notice. Specifications in parentheses ( ) indicate metric equivalents. TSI Incorporated Corporate Headquarters—Tel: 651 490 2811 Toll Free: 1 800 874 2811 Fax: 651 490 3824 E-mail: [email protected] Contact TSI or visit www.tsi.com for information on specific office locations worldwide. P/N 2980075 Rev.B Copyright © 2004 by TSI Incorporated Printed in U.S.A.
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