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TAG-HEUER photocells are very reliable and accurate, immune to sunlight, reflection and difficult climatic effects.
The items on this page are only available for Dutch residents.

TAG-HEUER photocell # 2-31 tag-heuer photocell # 2-35

Ref. HL 2-31
Infrared photocell with reflector, range 20 meters. Built in power sources and adjustable duration of output impulse. Two LED indicators for battery condition and correct alignment. Mounting on tripoids or on supports ref. HL 4. Not recommended if the moving body (for instance a car) can cause reflection.

Ref. HL 2-35
Infrared photocell, separate transmitter and receiver, range 40 or 80 meters. Built in power sources and adjustable duration of output impulse. LED indicators for battery condition and correct alignment. Mounting on tripoids or on supports ref. HL 4-3. Recommended for professional use with distances in excess of 20 meters.

Tag-Heuer photocell # 2-33 photocell from TAG HEUER # 2-34

Ref. HL 2-32
Double infrared photocell (HL 2-35) with 2 synchronized transmitters and 2 independent receivers for optimal reliability. The 2 outputs are insulated by optocoupler to give one impulse by whichever beam is cut first. Range 80 meters. Recommended for professional use needing a back-up system. Confirms to FIS timing rules.

Ref. HL 2-34
Double infrared photocell for timekeeping in athletics, range 12 meters. Composed of 2 synchronized photocells. Both beams (separated by 20 cm) must be interrupted to get an impulse. Two LED indicators for battery condition and correct alignment. Mounting on tripoids.

Tag-Heuer display # 996

Ref. HL 990
6-digit spectator display, digits are 15 cm (7-segment electromagnetic), size 108x23x13 cm. Low power consumpion. Needs 12 V power supply (not included). Can be connected to a Chronoprinter. Has an internal clock and remote control pad allowing the main timing functions.

Techspecs for TAG-HEUER photocells HL 2-31 HL 2-32 HL 2-34 HL 2-35

Description High frequency infrared beam (50 KHz). Piloting by quartz. Detection of signal by frequency comparision.

Principle Transmitter/receiver with reflector Double and separated transmitter/receiver Double transmitter/receiver with reflector Transmitter and receiver separated

Distance for use 20 meters 80 meters 12 meters LOW 40 meters HIGH 80 meters

Output impulse By optocoupler and working contact

1 output Double output 1 output

Precision of repetitive impulsions ± 0.02 ms

Internal power supply 3 batteries 1.5 V 2 x 4 batteries 1.5V 2 x 3 batteries 1.5 V

Power reserve at 20° C 100 hours LOW 100 hours HIGH 50 hours 100 hours LOW 100 hours HIGH 50 hours

Working temperature - 20 to + 50° C

Alignment LED check LED checks and luminous indicator LED checks LED check and luminous indicator

Mounting 1/4 camera thread for supports HL 4/ HL 4-3 or tripods

Dimensions 150 x 80 x 40 mm 150 x 80 x 40 mm 4x 150 x 280 x 40 mm 150 x 80 x 40 mm 2x

Weight 500 gr. incl. reflector Transmitter/receiver 800 gr. 2x 1300 gr. incl. reflector Transmitter/receiver 800 gr.

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Ref. HL 2-31 Infrared photocell with reflector, range 20 meters. Built in power sources and adjustable duration of output impulse. Two LED indicators for battery condition and correct alignment. Mounting on tripoids or on supports ref. HL 4. Not recommended if the moving body (for instance a car) can cause reflection.		Ref. HL 2-35 Infrared photocell, separate transmitter and receiver, range 40 or 80 meters. Built in power sources and adjustable duration of output impulse. LED indicators for battery condition and correct alignment. Mounting on tripoids or on supports ref. HL 4-3. Recommended for professional use with distances in excess of 20 meters.

Ref. HL 2-32 Double infrared photocell (HL 2-35) with 2 synchronized transmitters and 2 independent receivers for optimal reliability. The 2 outputs are insulated by optocoupler to give one impulse by whichever beam is cut first. Range 80 meters. Recommended for professional use needing a back-up system. Confirms to FIS timing rules.		Ref. HL 2-34 Double infrared photocell for timekeeping in athletics, range 12 meters. Composed of 2 synchronized photocells. Both beams (separated by 20 cm) must be interrupted to get an impulse. Two LED indicators for battery condition and correct alignment. Mounting on tripoids.

Ref. HL 990 6-digit spectator display, digits are 15 cm (7-segment electromagnetic), size 108x23x13 cm. Low power consumpion. Needs 12 V power supply (not included). Can be connected to a Chronoprinter. Has an internal clock and remote control pad allowing the main timing functions.

Techspecs for TAG-HEUER photocells	HL 2-31	HL 2-32	HL 2-34	HL 2-35
Description	High frequency infrared beam (50 KHz). Piloting by quartz. Detection of signal by frequency comparision.
Principle	Transmitter/receiver with reflector	Double and separated transmitter/receiver	Double transmitter/receiver with reflector	Transmitter and receiver separated
Distance for use	20 meters	80 meters	12 meters	LOW 40 meters HIGH 80 meters
Output impulse	By optocoupler and working contact
Output impulse	1 output	Double output	1 output
Precision of repetitive impulsions	± 0.02 ms
Internal power supply	3 batteries 1.5 V	2 x 4 batteries 1.5V	2 x 3 batteries 1.5 V
Power reserve at 20° C	100 hours	LOW 100 hours HIGH 50 hours	100 hours	LOW 100 hours HIGH 50 hours
Working temperature	- 20 to + 50° C
Alignment	LED check	LED checks and luminous indicator	LED checks	LED check and luminous indicator
Mounting	1/4 camera thread for supports HL 4/ HL 4-3 or tripods
Dimensions	150 x 80 x 40 mm	150 x 80 x 40 mm 4x	150 x 280 x 40 mm	150 x 80 x 40 mm 2x
Weight	500 gr. incl. reflector	Transmitter/receiver 800 gr. 2x	1300 gr. incl. reflector	Transmitter/receiver 800 gr.

Digital stopwatches Standard Multifunction With memory Timecalculator Decimal (1/100 minute)			Analog stopwatches 1/5 Second 1/10 Second Special divisions Dashboard
Timing systems Multichannel stopwatch Timeprinters Photocells & accessories (this page)			Wrist stopwatches Multifunction
Laboratory timers Countup & countdown			Table stopwatches Analog & digital