Check-line DT-725 Operating Instructions Manual

TABLE OF CONTENTS 1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02 2.0 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02 2.1 Controls 2.2 Kit Option 3.0 Battery Usage (DT-725 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03 3.1 Battery Charging 3.2 Battery Replacement 4.0 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 04 4.1 Internal Triggering 4.2 External Triggering 4.3 Synchronous Output Signal 4.4 Using A Tripod 5.0 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 06 6.0 True RPM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 06 7.0 Flash Tube Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07 8.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08 9.0 Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WARNING 1. Do not look at the emitted light for long periods of time, it can be harmful to the eyes. 2. Do not disassemble or repair the unit while in operation. 3. Do not operate or store the instrument in the following places: explosive areas, areas near water, oil, dust or chemicals, or areas where the temperature is above 104°F (40 °C). – 8 – 8.0 SPECIFICATIONS Flashing Range 40 – 12,500 FPM (Flashes Per Minute) Accuracy ±0.02% of reading Resolution 0.1 , 40.0 – 4,999.9 FPM 0.2 , 5,000.0 – 7,999.8 FPM 0.5 , 8,000.0 – 9,999.5 FPM 1.0 , 10,000.0 – 12,500.0 FPM Display 5-Digit LED, 0.3" (8mm) height Rate Divide by 2, Multiply by 2 Update Time Ext. mode: varies with flashing rate Operating Time 1 hour when fully charged (Model DT-725) Continuous (Model DT-721) Flash Tube/Power Live Xenon, 10 W, 100 million flashes Flash Duration 10 – 15 μs Signal Output NPN Open Collector (24 VDC max., 50 mA) 150 μs typical Phase Shift Internal mode only by using the “+” and “–” switches Ext. Trigger a) 12-24 VDC thru a 3-wire NPN output sensor (requires external power supply) Input Signal b) 12 VDC thru a 2-wire proximity sensor (leakage current 1 mA max.,Load current 8 mA min.) c) Switch or Relay contact Operating Temp. 32°–104° F (0 – 40° C) Dimensions 9" L x 4.3" W x 8.5" H (228.6 x 109.2 x 216.9mm) (Height includes handle) Weight DT-725 2.75 lbs (1.25 Kgs) DT-721 1.5 lbs. (0.7 Kg) 4.3" (109.2mm) 4.3" (109.2mm) 9" (228.6mm) 8.5" (228.6mm)

1.0 INTRODUCTION The Check•Line® DT-721(AC-powered) and DT725 (battery powered) Digital Stroboscopes are highly stable, industrial-quality instruments for non-contact RPM measurement as well as for inspecting and observing moving parts by “freezing” or “slowing down” the action. 2.0 OVERVIEW 2.1 Control Panel Setter: The setter changes the flash rate. Tune CW to increase the rate, turn CCW to decrease the ratee. x2 Switch; Pressing “x2” will double and display the flashing rate. 1/2 Switch: Pressing the “1/2” will divide flashing rate by two and display it. Plus (+) Switch: When object appears to be standing still, pressing “+” will give the illusion that the object is moving towards the opposite direction of rotation. This action increases the rate slightly (phase shift) and is used to place the object in desired position. Minus (–) Switch: When object appears to be standing still, pressing “–” will give the illusion that the object is moving towards the rotating direction. This action decreases the rate slightly (phase shif) and is used for the same reason as above. Input and Output Connectors: Phonejack (3.5 mm) Tip: Signal Sleeve: GND Power switch with lock option Power cord (DT-721 only, not shown) 2.2 Kit Option A “Kit” option is offered which also includes a carrying case and spare flash tube at minimal additional cost. Setter Input & Output Connectors – 7 – 7.0 FLASH TUBE REPLACEMENT When FPM reading is displayed but unit is not flashing, the flash tube may need to be replaced.The procedure is as follows: 1. Unplug line cord from power line (DT-721). Turn power switch OFF. IMPORTANT: Wait a few minutes until stroboscope is cool before replacing flash tube. 2. Remove protective window by removing the four (4) screws on the face of the instrument. 3. Use a rag and pull the tube out of its socket by rocking it slightly back and forth. IMPORTANT: Do not use bare hands to remove the tube, it may break and cause injury. 4. Insert new tube using the technique mentioned above. Make sure that the tube is placed vertically in the socket (see diagram below) otherwise it will touch the reflector. Tube should be set symetrically within the neck of the reflector. 5. Replace the protective window.

Model DT-725 is equipped with an internal, lead acid, rechargeable battery that provides one hour of continuous operation. NOTE: Charge battery for approx. 15 hrs. before using the instrument for the first time. When battey power is low, the Low Batt indicator on the display will light up. 3.1 Charging the battery 1. Turn power off. 2. Instert AC adapter into the receptacle in the bottom of the instrument handle.. 3. Approximate charging time:2 hours. NOTE: The charger adapter may also be used to power the instrument continuously. 3.2 Replacing the battery The life of the built-in battery should be approximately 300 charges. When the time period between charges becomes increasingly shorter, replace the battery. – 6– 5.0 MEMORY When the strobe is turned off and on again at a later time, it will start to flash at the previous displayed rate regardless if the setter has been moved or not. 6.0 TRUE RPM All strobes give the illusion of stopped motion when flashing in submultiples of the true speed. To obtain the correct rpm, turn knob from highest fpm downward. When the first single image appears, read the true rpm. To verify it, press the “1/2” key. A single image will appear again. Rotation of shaft (rpm) Number of flashes (rpm) Flashes/ rpm shaft Number of stopped images at 1,500 rpm 6,000 4 times 4 4,500 3 times 3 3,000 2 times 2 1,500 1 times 1 750 1/2 times 1 500 1/3 times 1 AC adapter/charger receptacle CAUTION Only charge the instrument using the AC adapter/charger provided.

120 VAC (US) or 230 VAC (Europe) power source. DT-725 only: Charge battery for approx. 15 hrs. before using strobe for the first time (see section 2.3). 2. Aim light beam at the object under observation. The best distance between the strobe and moving object is approximately 2 ft (61 cm). 3. Measure rpm by turning setter. Turn the setter to adjust the flashing rate to the rotational speed of the object. To reach the desired rate faster, use the 1/2 or x2 switches (see Section 2.1). 4.2 External Triggering 1. Connect wires according to connector pin designation: Tip: signal Sleeve: Gnd (ground) 2. Pull power trigger switch and lock it. When the ext phone jack is inserted in unit, the strobe automatically switches from the internal mode to the external. 3. The strobe will flash every time the sensor puts out a pulse. Input signal requirements are listed below: a. 12 – 24 VDC thru a 3-wire NPN sensor. (Requires external power supply). b. 12 VDC thru a 2-wire proximity sensor. (Leakage Current 1 mA max. Load current 8 mA min.) c. Switch or Relay Contact. 4. If the input signal frequency exceeds upper or lower limits, the alarm mark will be displayed and the strobe will stop flashing. ELECTROMATIC CHECK•LINE ® – 5– 4.3 Synchronous Output Signal The Synchronous output signal appears on the tip of the output phone jack. See below 4.4 Using A Tripod 1. To mount the strobe on a tripod or any other mounting surface, place a 1/4– 20unc screw, 8mm or shorter, through the tripod screw hole on the bottom.

original purchaser that this product is of merchantable quality and confirms in kind and quality with the descriptions and specifications thereof. Product failure or malfunction arising out of any defect in workmanship or material in the product existing at the time of delivery thereof which manifests itself within one year from the sale of such product, shall be remedied by repair or replacement of such product, at ELECTROMATIC’s option, except where unauthorized repair, disassembly, tampering, abuse or misapplication has taken place, as determined by ELECTROMATIC. All returns for warranty or non-warranty repairs and/or replacement must be authorized by ELECTROMATIC, in advance, with all repacking and shipping expenses to the address below to be borne by the purchaser. THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR ANY PARTICULAR PURPOSE OR APPLICATION. ELECTROMATIC SHALL NOT BE RESPONSIBLE NOR LIABLE FOR ANY CONSEQUENTIAL DAMAGE, OF ANY KIND OR NATURE, RESULTING FROM THE USE OF SUPPLIED EQUIPMENT, WHETHER SUCH DAMAGE OCCURS OR IS DISCOVERED BEFORE, UPON OR AFTER REPLACEMENT OR REPAIR, AND WHETHER OR NOT SUCH DAMAGE IS CAUSED BY MANUFACTURER’S OR SUPPLIER’S NEGLIGENCE WITHIN ONE YEAR FROM INVOICE DATE. Some State jurisdictions or States do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you. The duration of any implied warranty, including, without limitation, fitness for any particular purpose and merchantability with respect to this product, is limited to the duration of the foregoing warranty. Some states do not allow limitations on how long an implied warranty lasts but, not withstanding, this warranty, in the absence of such limitations, shall extend for one year from the date of invoice. ELECTROMATIC Equipment Co., Inc. 600 Oakland Ave. Cedarhurst, NY 11516—USA Tel: 1-800-645-4330/ Tel: 516-295-4300/ Fax: 516-295-4399 Every precaution has been taken in the preparation of this manual. Electromatic Equipment Co., Inc., assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of information contained herein. Any brand or product names mentioned herein are used for identification purposes only, and are trademarks or registered trademarks of their respective holders. 9.0 WARRANTY

DIGITAL STROBOSCOPE/TACHOMETER Operating Instructions CHECK•LINE ® BY ELECTROMATIC Distributed by: ABQ Industrial LP USA Tel: +1 (281) 516-9292 / (888) 275-5772 eFax: +1 (866) 234-0451 Web: https://www.abqindustrial.net E-mail: [email protected]