Model ILA-550

Inductive Loop 
Analyzer. Excellent tool for use  with scanning type  detectors.

Features & Benefits
• Contains all the functions necessary to test newly installed loops and loop systems. A powerful troubleshooting tool

• Easy to use, fits in the palm of your hand
 
• Housed in an attractive, compact, impact resistant case
 
• Liquid crystal display (LCD) provides direct readout for ease of measurement
 
• Operates on internal batteries or from an AC adapter (included). The adapter also charges the batteries

• Battery level status shown on display
 
• Automatic shutoff if the selector switch is not moved within eleven minutes or if the battery voltage falls below a preset level - to conserve battery life
 
• Measures the leakage resistance of the loop to ground at 500 VDC
 
• Measures frequency and relative signal strength of a loop network connected to an active detector with a probe suspended over the loop (indirect method) or when connected to the loop terminals (direct method)
 
• Measures loop inductance, resistance, and Q of a loop with NO detector connected. Unit provides excitation to measure newly installed loop at locations without power or a detector
 
• Measures the change of inductance (-DL) caused when a vehicle drives over the loop and remembers the greatest change encountered. Useful for properly setting detector sensitivity levels
 
• Comes with a nylon bag to carry the analyzer and all accessories

Specifications:
ILA-550 System
ILA-551   -   Operating Manual 
ILA-552   -   Frequency Probe 
ILA-553   -   Protective Nylon Carrying Case 
ILA-554   -   A.C. Adapter 
ILA-555   -   Test leads 
ILA-559   -   Hand held unit only 
ILA-550G -  Inductive Loop Analyzer 240 VAC (Great Britain) 
ILA-554G -  Adaptor, AC 240 VAC 
ILA-550I  -  Inductive Loop Analyzer 240 VAC (Australia) 
ILA-554I  -  Adaptor, AC 240 VAC (Other international plug configurations available.  Contact IDC International Sales  at +1-714-447-0355.) 
ILA-550 System Accessories (Ordered separately)
ILA-556 - Standard automotive cigarette lighter adapter (used for charging unit in vehicle) 
ILA-557 - Extend card for rack mount detectors
ILA-558 - Rechargeable battery pack (replacement) 
ILA-550 System Specifications

• Frequency: Internal Timebase 
Range: 1 khz to 125 khz 
Basic Accuracy: 0.01% at 70°F 
Resolution: ± 1 Hz at 40 khz* 
Least significant digit (LSD)   displayed is 1 Hz. 

• Resolution degrades as measured frequency increases and/or sensitivity setting of a scanning detector decreases. 
Signal Strength: Relative measurement of the field around the loop.

Inductance (L):  
Range: 20 mh to 2500 mh 
Basic Accuracy: 10% of measured value 
Resolution: ± 1 mh 
Least significant digit (LSD) displayed is 0.1 Hz when L < 100 mh; 1 mh when L ©¯ 100 mh

Resistance:  
Range: 0 - 40 ohms 
Basic Accuracy: 5% of measured value or 0.5 ohms. 
Resolution: ± 0.2 ohms 
Least significant digit (LSD) displayed is 0.1 ohms

delta L:  
Operating Range: 20 mh to 2500 mh 
Resolution: 0.002% at 115 mh 
Least significant digit (LSD) displayed is 0.001% 
• Resolution increases up to 0.001% as loop inductance increases. 
Leakage Resistance:  
Range: 5 - 500 megohms 
Basic Accuracy: 10% of measured value 
Temperature Range:  +32° F to +122° F (0° C to 50° C)

Power:  
Internal: 12.5 VDC rechargeable battery pack 
External: 12 VDC plug-in AC adapter 
Size (Envelope Size):  7.5" L x 4.0" W x 2.7" H,  (19.05 x 12.44 x 6.85 cm) 
Weight: 1 lb 6 oz (620 grams),  excluding accessories and case 

For more information or to receive a quotation please call Marlin Controls, Inc. at 508-278-0446 or 203-743-6231 in Connecticut.