ABQINDUSTRIAL DT-311D AC Powered Digital Stroboscope User Manual

: June 12, 2024
: ABQINDUSTRIAL

Table of Contents

ABQINDUSTRIAL DT-311D AC Powered Digital Stroboscope
Product Information
Product Usage Instructions
SPECIFICATIONS
FEATURES & FUNCTIONS
OPERATION
TROUBLESHOOTING
DIMENSIONS (mm)
ABOUT COMPANY
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ABQINDUSTRIAL DT-311D AC Powered Digital Stroboscope

Product Information

The DT-311D Line Powered Digital Stroboscope is a high-quality industrial tool distributed by ABQ Industrial LP. It is designed to measure true revolutions per minute (RPM) of rotating objects. The stroboscope has various features and functions, including a display that shows flash speed in flashes per minute (FPM) or Hz, operation modes for internal user settings and external sensor input, and function keys for signal selection and frequency adjustment. The stroboscope can be powered by an AC power source ranging from 85V to 240V.

Product Usage Instructions

To measure true RPM by marking an object:
- Mark the object to be measured with a visually distinguishing characteristic or physically mark it with tape, pencil, etc.
- Turn on the power switch.
- Set the flash rate to the highest value and adjust downward.
- Note the true RPM when the action appears frozen and the first single image of the mark appears.
To measure true RPM without marking an object:
- If the object has a suitable, unique shape, the actual speed may not need to be determined by marking.
- Refer to the harmonic images chart provided in the manual to determine the actual speed based on the observed harmonic images.
Troubleshooting:
- If the unit does not work and there is no display, check if the power supply is proper.
- Ensure that the power switch is functioning correctly.
- Check if the internal fuse is burned out and replace if necessary.

For any further assistance or inquiries, you can contact ABQ Industrial LP through the following:

Telephone: +1 281-516-9292 / 888-275-5772
eFax: +1 866-234-0451
Website: https://www.abqindustrial.net
Email: info@abqindustrial.net

Warning

Use in flammable environments is prohibited. Use in this manner may result in fire or explosion.
Do not use or store in the following environments: Direct sunshine con-densation, dust or caustic.
Do not alter or modify. Such action may cause damage and void war-ranty.
Operate within 0-35°C (32-95°F), 35-85% RH. Use outside of this range may alter operation of the unit.
Case may become excessively hot when used continuously for more than 2 hours.

The DT-311D is a portable, highly stable, industrial-quality strobo-scope for non-contact inspection and observation of moving parts by providing the user the illusion of stopped or slowed down equip-ment movement. Constructed with a rugged, metal enclosure, the DT-311D’s withstand harsh industrial usage. The universal pow-er range (85-240 VAC) allows one model to be utilized on various power voltages in a multitude of countries. The included top and bottom handles aid in portability and usage flexibility. The control adjustment settings allow the flash rate to be readily altered by the user to visually inspect rotating or reciprocating machinery such as gear teeth, rotors, shafts, rewinders, printing presses, etc. all with-out stopping production. These features make the DT-311D ideal for quality inspection and preventive maintenance of automated motion equipment.

SPECIFICATIONS

Flashing Range: 60-12,000 fpm (flashes per minute)
Accuracy: ±0.01% F.S.
Resolution: 0.1 from 60-6,000; 1 from 6,001-12,000
Display: 5 digits 0.4” (10 mm) height
Flashtube Power/Life: Xenon ≤ 45W / 50,000,000
Flash Duration: 10-30 µs automatically adjusts with flash rate
External Trigger Input: 5 V dc ~ 12 V dc pulse signal input (high level trigger) from sensor
Sensor Power Supply: 12 V dc up to 50 mA
Lux Rating: 8” (20 cm) Distance = 1550 lx @ 1500 fpm, 2350 lx @ 6000 fpm with 15.5” (400 mm) irradiation diameter. 20” (50 cm) Distance = 650 lx @ 1500 fpm , 580 lx @ 6000 fpm with 23.5” (600 mm) irradiation diameter
Sensor Power Supply: 5-12 VDC up to 50 mA
Power Requirement: 85-240 VAC 50/60 Hz
Operating temperature: 32° – 104°F (0 – 40°C)
Dimensions: 8.3 x 4.7 x 4.7” (210 x 120 x 120 mm)
Product Weight: 2.2 lb (1.0 kg)
Package Weight : 2.6 lb (1.2 kg)
Warranty: 1 Year
Certification: CE, RoHS
Included Accessories: Top & bottom handles, 9.8’ (3 m) power cable, 3 pin female M16 threaded connector

FEATURES & FUNCTIONS

Display

FPM Flash speed indication in flashes per minute
HZ Flash speed indication in Hz
INT Operation in internal user settings mode
EXT Operation in external sensor input settings mode

Function Keys

SIG Signal selection. Press this key to switch between internal and external signal operation
MODE Switches between Hz and FPM
+ Increases the frequency (internal trigger mode only)
– Deceases the frequency (internal trigger mode only)
×2 Multiplies the flash rate/frequency by a factor of 2 (internal trigger mode only)
÷2 Divides the flash rate/frequency by a factor of 2 (internal trigger mode only)
EXT External trigger Input
ON Switch on button

OPERATION

The Use of Internal Trigger
Turn the power on. The system enters the internal trigger mode. Turn the encoder knob, or press the “+” “-” keys to adjust the strobe frequency or flash speed so that detected the object ap-pears stationary. Use “× 2” “÷ 2” keys to make large changes to the flash frequency.
To measure true revolutions per minute (RPM) by Marking:

“Mark” the object to be measured by either visually noting an inherent distinguishing characteristic (such as a label, scratch, etc.) or physically marking the object with a small piece of tape, pencil mark, etc. If the object has a uniform shape, such as multi blade fan or the shaft of a motor, you should give it an identifying mark with reflective tape or paint to distinguish its direction.
Turn power switch on.
Set flash rate to the highest value and adjust downward.
The true RPM can be noted once the action appears frozen and the first single image of the “mark” appears (see chart below and accompanying diagram for further explanation).
To verify RPM reading, press “÷2”; a single image should ap-pear again.
- To measure true revolutions per minute (RPM) without Marking: This example explains that if the object has a suitable, unique shape, then the actual speed of the object may not need to be determined by marking the object.
- In this example, the rotation is below 7000 rpm, the following har-monic image appears:
- Harmonic images at 6000 and 4000 rpm are not a single still im-age, but double and quadruple. Single image appears at 3000 and 1500 rpm. 1500 is half of 3000 and the same single image appears, therefore, the actual speed of the object is 3000 rpm.
  Actual Speed RPM| Strobe Frequency FPM|

Multiple

| Number of Still Images
---|---|---|---
3000| 12,000| 4| 4
3000| 9,000| 3| 3
3000| 6,000| 2| 2
3000| 3,000| 1| 1
3000| 1,500| 1/2| 1
3000| 1,000| 1/3| 1

The Use of External Trigger
When in EXT mode: In this mode, the flash trigger signal frequency or flash rate speed is automatically adjusted according to an external sensor’s input signal.
Wiring of the external sensor is as follows:

1: +12 V dc up to 50 mA
2: Ground
3: Trigger signal 5 – 12 V dc

TROUBLESHOOTING

Issue

| ****

Troubleshooting Methods

---|---

Unit does not work and no display

| Check the power supply is proper
Power Switch is functioning
Whether internal fuse is burn out, check and replace

Unit does not work but displays properly

| Silicon controlled rectifier / optical coupler (IRF840/521-1) need replacement
Strobe flashtube needs to be replaced
Check if unit is in external trigger mode
Does not flash under external trigger mode| Check if the trigger sensors are working properly
Flashes intermittently| ****

Flashtube needs to be replaced

Flash but the flash is darker or dimmer than typical