SPY 785 Operating Instructions Manual
  1. Manuals
  2. Brands
  3. SPY Manuals
  4. Security Sensors
  5. 785
  6. Operating instructions manual

SPY 785 Operating Instructions Manual

Hide thumbs Also See for 785:
Table of Contents

Advertisement

Quick Links

o p e r at i n g
i n st r u ct i o n s
S py
p o rtab l e p u ls e
®
dc holi day detector
mo d e l 78 5 / 79 0

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 785 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for SPY 785

Summary of Contents for SPY 785

  • Page 1 o p e r at i n g i n st r u ct i o n s S py p o rtab l e p u ls e ® dc holi day detector mo d e l 78 5 / 79 0...
  • Page 2 ® website at www.spyinspect.com. The SPY Model 785 / 790 meet the Electromagnetic Compatibility ® Directive and the Low Voltage Directive. The product is Class A, Group 1 ISM equipment according to CISPR 11. Group 1 ISM product:...

  • Page 3: Table Of Contents

    Unit Calibration ....... . . 6 Principles of Holiday Detector Operation ....7 Model 785/ 790 Pulse DC Holiday Detector Overview ..8 ®...

  • Page 4: Operator Safety

    operator safety PLEASE READ THESE INSTRUCTIONS CAREFULLY PRIOR TO USING THE EQUIPMENT! WARNING! This is a HIGH VOLTAGE device capable of producing an electrical shock if not properly grounded and/or operated in accordance with the instructions and procedures prescribed in this manual! If you have a pacemaker or other life critical electronic medical device DO NOT use this device.
  • Page 5 AROUND SENSITIVE ELECTRONICS OR RADIO EQUIPMENT. When in standby the Model 785 / 790 Pulse DC Holiday Detector will generate radio frequency ® emissions which are within the limit defined by the Electromagnetic Compatibility Directive. Due to its method of operation however, the SPY Model 785 / 790 ®...

  • Page 6: Unit Calibration

    +/- 5% of indicated setting over the range of 1-15 kV for the 785 and 5-35 kV for the 790. Since output voltage is regulated, this tolerance is maintained regardless of load.

  • Page 7: Principles Of Holiday Detector Operation

    principles of holiday detector operation Holiday detectors are devices that are used to detect the presence of defects in the non-conductive coatings applied to surfaces in order to minimize ion flow from a conductive substrate. This is accomplished by attempting to create an electrical circuit by passing an electrode over the non-conductive coating.

  • Page 8: Spy ® Model 785/ 790 Pulse Dc Holiday Detector Overview

    785 / 790 pulse dc holiday detector overview The Model 785 Pulse DC Holiday Detector is a high voltage (1-15 kV) detector designed to cover a wide range of coatings from thin films to tapes to extruded or coal tar types of coatings (4 -150 Mils).
  • Page 9 Electrode Accessory Connection Point Voltage Set Access Hole Electrode Wand 10 Shoulder Strap Connection Shoulder Strap Connection 11 Comfort Grip Easy Carry Top Handle 12 Ground Cable Connection Point Model & Serial Number 13 Horn Built In Digital LCD JeepMeter 14 Quick Release Battery Button (Voltage meter) 15 12V Battery...

  • Page 10: Connecting Accessories

    connecting accessories CAUTION! DO NOT TOUCH. Make sure the switch is in the OFF position prior to connecting any accessory. Clip Installation Shoulder Strap Control Knob Electrode Wand Caution! - High Voltage Cuidado! - Voltaje Alto Battery STEP 1. CONNECTING THE ELECTRODE WAND. Plug into the “front” of the detector.
  • Page 11 Earlier kit versions did not include a grounding clamp and you can order one from SPY if you would like the ability to add one to your ground cable. PROPER GROUNDING. Make sure the ground cable is uncoiled and extended.

  • Page 12: Grounding Methods

    Grounding methods 1. DIRECT GROUNDING Direct grounding using the standard 50 ft ground cable is the most reliable form of grounding which offers a direct connection between the holiday detector and the non-insulated pipe end (cut back) to be tested. A.
  • Page 13 An additional grounding rod allows the direct grounding of the holiday detector, if the bare pipe end (cut back) cannot be connected using the standard 50 ft ground cable. If desired SPY also makes custom length ground cables of ®...
  • Page 14 3. INDIRECT GROUNDING USING A TRAILING GROUND WIRE Indirect grounding using a trailing ground. This grounding alternative allows holiday testing without an obstructing cable, if direct grounding is not possible. To use the ground cable using the trailing ground method please remove the quick connect grounding clamp if you have it attached, to keep it clean so it makes good ground connection when needed (some earlier kit versions may not have this kit part).
  • Page 15 4. CAPACITIVE GROUNDING USING A GROUNDING COLLAR FOR USE ONLY WITH 785/790 AND 125/135 PULSE DC UNITS The grounding collar is used if no direct or indirect grounding is possible. The grounding collar is also recommended in case of bad conducting or extremely dry soil.
  • Page 16 Grounding methods EARTH (SOIL) GROUND AS AN ELECTRICAL CURRENT RETURN PATH For a Holiday Detector to inspect a coated pipe properly an electrical ground return path is needed. When a holiday in the coating is detected a spark occurs forcing a low current to flow from the metal pipe back through the ground wire of the detector.
  • Page 17 GOOD GROUNDING PRACTICES Soil conditions must be evaluated prior to beginning the job 1. Soil Moisture Content Since the Earth is being used as an electrical conductor the moisture content of the soil must be taken into consideration. Soils with a high moisture content offer a lower resistance to current flow and have a much lower voltage loss.
  • Page 18 GROUND ROD DEPTH BECOMES AN ISSUE WHEN PROVIDING A GOOD EARTH GROUND 1. Shallow Ground Rod When the moisture content of the soil is high a ground rod can be driven into the earth about 1 - 2 feet to provide a low resistance return path to the holiday detector.
  • Page 19 This grounding method, Illustration #4, can be used only with Pulsed DC holiday detectors such as the SPY 785 or 790. It cannot be used with the SPY 780 detector since it has a continuous DC voltage output. The DC low current that would normally be produced when a holiday is located is blocked by the capacitance of the grounding collar.

  • Page 20: Controls And Voltage Adjustments

    LCD display turns on, the red indicator LED light will blink and the horn tone will pulse on and off. provided flathead screwdriver place the flat screwdriver Using the SPY ® head through the hole on the bottom side of the knob to change the voltage setting, the voltage (shown on display) is in kilovolts (thousands of volts).
  • Page 21 IMPORTANT: In the field, setting the Inspection Voltage must be performed with the detector wand disconnected from the spring/pipe. The main reason for this is the potential buildup of static electricity/ static voltage on the surface of the pipe coating. The detector’s internal voltmeter is very sensitive and responds to any static voltage.

  • Page 22: Test Voltage Guide

    Test voltage Guide for 785 / 790 portable holiday detector 525* SQRT (MILS) MINIMUM TEST VOLTAGE FOR THIN FILM COATINGS COATING THICKNESS MINIMUM TESTING VOLTAGE KiloVolts 0.25 1.67 0.30 1.82 0.36 1.97 0.41 2.10 0.51 2.35 0.64 2.63 0.76 2.88 3.33...

  • Page 23: Dc Paddle

    The Model 785 / 790 DC Holiday Detector comes with a DC Paddle to assist in the location of Holidays (defects in the coating). Due to the low voltage of the Model 785 / 790 DC Holiday Detector the spark that jumps...

  • Page 24: Battery Charging & Storage Instructions

    The SPY battery is a completely sealed, rechargeable 12 volt unit. It ® can be used in any position and under most conditions. Batteries are shipped fully charged. However, prior to use we recommend you place them on the charger to verify charge level is full.
  • Page 25 WARNING! DO NOT USE ANY OTHER TYPE OF CHARGER. This charger is specifically designed for this battery. Charger CHARGING THE BATTERY. Slide the charger onto the battery as far as possible. A discharged battery requires 4 - 6 hours to fully charge. There is no danger of overcharging the battery.

  • Page 26: Field Calibration

    Prior to each use of the Model 785 / 790 Pulse DC Holiday Detector it is important to perform a Field Calibration to verify that the required voltage setting for the coating thickness will accurately detect defects (holidays) in the coating.

  • Page 27: Troubleshooting Guide

    If it does not detect then ensure ground cable and electrode wand are correctly inserted (see page 10). If unit still fails to detect a direct short repair may be needed, Call SPY Inspection Equipment for support. Minimum Voltage Follow...
  • Page 28 THE DETECTOR Use SPY JM or PJM will get damaged and are not rated for over VOLTAGE 1,000 Volts. The SPY JM is rated for 7 kV DC NEEDS TO BE and 35 kV Peak (crescent) on Pulse DC. The VERIFIED...
  • Page 29 troubleshooting guide PROBLEM POSSIBLE SOLUTION CORRECTION METHOD THE BATTERY Check/Replace Battery Use a multimeter to measure the battery DOESN’T voltage on the freshly charged battery. The SEEM TO BE voltage should read 13.0 Volts or higher if it just came off the charger. If it has been WORKING WELL sitting for several hours the voltage can be...

  • Page 30: Maintenance And Repair

    If maintained the Model 785 / 790 Pulse DC Holiday Detector will offer you a lifetime of dependable operation. Regular care and maintenance of the unit is a requirement of good quality management practices. This detector does not contain any user-serviceable WARNING! parts;...

  • Page 31: Technical Specifications

    ® model 785 / 790 technical specifications MODEL Voltage Type Pulse DC Pulse DC Voltage Range (kV) 1-15 kV 5-35 kV Voltage Output Accuracy ±5% ±5% Coating Range (Min-Max) 4-150 mils 50-750 mils Pulse DC Repetition Rate 28 Hz 28 Hz Operating Temperature –20°F to 148°F...

  • Page 32: Warranty

    SPY Inspection Equipment, hereafter referred to as (SPY ) warrants that ® Model 785 / 790 Series Holiday Detectors shall, under normal use ® and service, be free from defects in material and workmanship. SPY ‘s ® entire warranty obligation shall be limited to, at SPY ’s option, the repair...

  • Page 33: Electrode Types

    Electrode types The Model 785 / 790 can be fitted with a wide variety of electrodes that vary in form, size and material to fit a wide range of coating inspection projects. If we don’t carry it we can custom build an electrode to fit your project needs.

  • Page 34: Accessories

    The Model 785 / 790 has a wide variety of accessories to assist you with your coating inspection project. SPRING ADAPTER ELECTRODE FLEX FOR ELCOMETER WAND SPRINGS (36” – 72”) ITEM #13996 SPRING ADAPTER FOR TINKER & GROUND CABLE RASOR SPRINGS (50 FT –...

  • Page 35: Related Equipment

    related equipment MODEL 780 PORTABLE DC MODEL JM ® ® HOLIDAY DETECTOR (VOLTAGE METER) MODEL PJM POCKET ® JEEPMETER (VOLTAGE METER)
  • Page 36 s py i n s p e ct.com...

This manual is also suitable for:

790780

Table of Contents