Low Cost Digital Stroboscope

General Information

DT-721 (AC-Powered)
DT-725 (Battery Powered)
40.0 - 12,500 RPM/FPM
and higher using harmonics

The DT-721 and DT-725 Digital Stroboscopes are highly stable, industrial-quality instruments for non-contact RPM measurement as well as for inspection and observation of moving parts by “freezing” or “slowing down” the action.

A “Kit” option is offered for both models which also includes a carrying case and spare flash tube at minimal additional cost.

DT-721 and DT-725 low cost digital stroboscope

Features of the DT-721 & DT-725 stroboscopes:

AC or battery-powered models

Highly accurate speed control with drift-free operation

Easy-to-use controls with bright LED display

Instant double (2x) and half-rate (÷2) flash selection

Accepts input from sensor for external flash triggering

Phase shift adjustment permits movement of objects to desired position for convenient observation

Extremely lightweight and rugged

External
Trigger Operation >>>

Suitable for applications requiring external control of the flash rate using a sensor or other input device. An external power source may be required.

Low cost digital stroboscope with external trigger

Complete Kit:

Optional Complete Kit is offered for both models which also includes a carrying case and spare flash tube at minimal additional cost.

Dimensions of the DT-721 & DT-725 stroboscopes:

Specifications:

Flash Range	40.0 - 12,500 FPM	Phase Shift	0 - 359° (Internal Mode)
Accuracy	± 0.02% of reading	Operating Time	1 hour (Model 725 only)
Resolution	(0.1) 40.0 - 4,999.9	Charging Time	15 hours
	(0.2) 5,000.0 - 7,999.8	Low Battery Indicator	Model 725 only
	(0.5) 8,000.0 - 9,999.5	Operating Temperature	32 to 105° F (0 to 40° C)
	(1.0) 10,000.0 - 12,500.0	Weight
Display	5-Digit LED, 8 mm high	Model 721	1.50 lbs. (680 g)
Flash Tube	Xenon, 10 watt	Model 725	2.75 lbs. (1.25 Kg)
Tube Life	100 million flashes	Power Requirements
Flash Duration	10 - 15 µs	Model 721	115 VAC ± 10%, 50/60 Hz
Signal Output	NPN Open Collector, 24 VDC max. at 50 mA (150 µs typical)	Model 725	Internal battery (Lead Acid Rechargeable)
External Trigger Input Signal
a) 12 - 24 V DC through a 3-wire NPN sensor (requires external power supply) b) 12 V DC through a 2-wire proximity sensor (Leakage Current 1 mA max. Load current 8 mA min.) c) Switch or Relay Contact

Ordering Guide:

Item	Price	Description
AC Powered Models
DT-721	$475.00	115V AC Powered Stroboscope
DT-721-KIT	$530.00	115V AC Powered Stroboscope Complete Kit (KIT Adds: Carrying Case & Spare Flash Tube)
DT-721-2 (230V)	$525.00	230V AC Powered Stroboscope
DT-721-2-KIT (230V)	$580.00	230V AC Powered Stroboscope Complete Kit (KIT Adds: Carrying Case & Spare Flash Tube)
Battery Powered Models
DT-725	$545.00	Internal Battery Powered Stroboscope - 115V AC Charger
DT-725-KIT	$600.00	Internal Battery Powered Stroboscope - 115V AC Charger (KIT Adds: Carrying Case & Spare Flash Tube)
DT-725-2 (230V)	$595.00	External Battery Powered Stroboscope - 230V AC Charger
DT-725-2-KIT (230V)	$650.00	External Battery Powered Stroboscope - 230V AC Charger (KIT Adds: Carrying Case & Spare Flash Tube)
Accessories
721FH	$55.00	Spare Flashtube for DT-700 Series
DT700CC	$58.00	Carrying Case for DT-700 Series