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HIL T 9000 Handheld Inductive Loop T ester User Manual July 2003 R=12.3 Ω Q=12.1 L=89.2µH 50KHz ATSI 8157 US Route 50 • Athens, OH 45701 (740) 592-2874 • Fax (740) 594-2875 sales@atsi-tester .com www.atsi-tester .com[...]
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1 HILT 9000 - Inductive Loop Tester T able of Contents Receiving Y our Shipment ......................................................... 2 Packaging ..... ........................................................................... 2 Description ............................................................................. 3 Overview of HIL T 9000 C[...]
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2 www.atsi-tester .com W a r nings These safety war ning are provided to ensure the safety of personnel and proper operation of the tester . • The tester must not be operated beyond its specified operating range. • Safety is the responsibility of the operator . Receiving your Shipment Upon receiving your shipment, be sure that the contents are [...]
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3 HILT 9000 - Inductive Loop Tester General Description The HILT -9000 is designed to measure characteristics of an inductive loop at dif ferent frequencies; measure working parameters of the loop system; as well as simulate the detector by measuring the change of inductance. The measurement modes can be easily switched by pressing corresponding bu[...]
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4 www.atsi-tester .com Overview of HIL T 9000 Contr ols 1. LOOP: Measures R DC , L, and Q . If Q >15, use Q push- button to obtain actual value. 2. Q : Measures high Q values (when Q is >15). 3. Used in SET FREQ mode to increase frequency by 1KHz. 4. Used in SET FREQ mode to decrease frequency by 1KHz. 5. POWER: Tur ns unit On/Off. 6. SET FRE[...]
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5 HILT 9000 - Inductive Loop Tester Function Controls Power Press the POWER push-button to tur n the tester on and off. The tester per for ms an initial self-test to verify that the inter nal circuit is working. After the self-test is complete, the tester shows the current battery level and the message: Ready: Select Function . If the battery is lo[...]
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6 www.atsi-tester .com The LOOP test can measure a maxi- mum Q of 15. If Q is greater than 15 the tester displays Q >15 . To measur e the actual value, press the Q button on the keypad to run a separate Q test. The default frequency at which the LOOP and Q tests run is 50 KHz. It can be changed to any value within the range from 20 KHz to 80 KHz[...]
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7 HILT 9000 - Inductive Loop Tester , , Set Frequency When the tester is powered, the test frequency is automatically set to 50 KHz. The frequency can be changed to any value between 20 KHz and 80 KHz with 1 KHz resolution. T o set a dif ferent fr equency press the SET FREQ push-button to view the fre- quency adjustment display as show in Figure 5.[...]
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8 www.atsi-tester .com If there is bad connection, the tester displays a message as shown in Figure 7. Make sure that the test leads are properly connected. If the leads are connected to the loop and the message is still present, it means that Q of the loop is too low to generate the oscilla- tion or the inductance is out of range. This can be veri[...]
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9 HILT 9000 - Inductive Loop Tester Function Controls Summary BUTTON DESC RIPTIO N COMMENTS LOOP Used to measure L, Q, and R DC of the loop. Q is measured up to 15. If Q> 15, use Q butt on to obtain th e actual v alue of Q The loop must be disconnected fro m the system to run th is test Q Used to m easure hig h Q values ( when Q is >15) The l[...]
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10 www.atsi-tester .com Overview of T raf fic Loop Detection Systems The inductive loop represents the most commonly used method to detect vehicles. The inductive loop is simply a coil of wires embedded into the pavement and can be characterized by several parameters, L (inductance), Q (quality factor), R (active resis- tance, measured using AC sig[...]
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11 HILT 9000 - Inductive Loop Tester To guarantee a reliable oscillation in the loop system the quality factor ( Q ) of the loop with the lead-in wires should be above some value, deter mined by the amplifiers inside the detector . Deterio- ration of the loop and lead-in wires reduces Q and eventually prevents the system from oscillating even with [...]
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12 www.atsi-tester .com Commonly Asked Questions Q . Why do I have to disconnect the detector from the loop before running a Loop , Q , or ∆ ∆ ∆ ∆ ∆ L test? A. During Loop, Q , and ∆ L test, the tester is applying its own signal to the loop. The tester verifies there is no signal on the loop before running these tests. However , with a [...]
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13 HILT 9000 - Inductive Loop Tester Repair and Calibration To ensure that your instrument meets factory specifications, we recommend that it be retur ned to our factory at one-year intervals for calibration service. In addition to calibration of the test parameters, this service includes replacement of batteries and fir mware updates. Please conta[...]
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14 www.atsi-tester .com T echnical and Sales Assistance If you are experiencing any technical problems, or require any assistance with the proper operation or application of your tester , please call, fax, or e-mail our technical support staf f: ATSI 8157 US Route 50 • Athens, OH 45701 (740) 592-2984 (740) 594-2875 - Fax service@atsi-tester .com [...]
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16 www.atsi-tester .com Limited W arranty The HIL T 9000 (“Product”), distributed by Athens Technical Specialists, Inc. (ATSI), is warranted to the original purchaser (“Purchaser”) to be free of defects in materials and workmanship for a period of one year from the purchase date stated on the invoice. Within this period, in the event of a d[...]