Portable Optometer

  • Product No:S471
  • Manufacturer:UDT Instruments

The Model S471 is a high-quality handheld optical power meter, ideal for all your photometric, radiometric and fiberoptic measurement needs. The S471 is designed to be used in a laboratory setting or field environment. The Model S471 is microprocessor controlled and has three measurement data-presentation options: direct display measurement with analog bar; RS-232 computer interface and analog voltage input.

In addition to its exceptional technical and functional characteristics, this system is fully compatible with all UDT Instruments sensor heads in any configuration. All calibrations are traceable to the National Institute of Standards and Technology (NIST).


  • Wide dynamic range

  • High accuracy measurements

  • Programmable average readings in low-pass or boxcar average

  • Sample speeds up to 53 Hz(1)

  • Optional USB to serial bridge converter

  • Long battery lifetime or use external power




General Specifications

Electronic

7 Gains, auto/manual selection

Computer Interfaces

RS-232 or USB with use of serial bridge   adaptor (not included)

Sample Rates

> 2 Hz with display enabled Up to 53Hz   with display disabled

Analog Output Scale

±1,2,or 4 VDC

Communication Rate

9600 Baud

Operational Battery Life

16 Hours with backlight off, 12 Hours with   backlight on

Operating Temperature

10-60

Storage Temperature

 - 20 to 35° C for up to 1 year

External Power Source

12 VDC at 3.3 A or 100-240 VAC 50/60 Hz   with supplied power adaptor, 40 W max

Internal Power Source

Rechargeable integral batteries -- 5 NiMH   AA, 1800 mAHr batteries

Calibration Capacity

9 Continuous or 50 single-point

Calibration Traceability

Traceable to NIST with optional ISO/IEC   17025 accredited

Relative Humidity

Up to 99% (non-condensing)

Regulatory Compliance

TUV, UL, CSA,   CE

                                    Most Popular Sensor Options (purchased   separately)

Model

Material

Deault Cal Units

Dynamic Range

λ Range (nm)

Sensor Area

Notes

221

Si

W

2.0 x 10-11 to   2.4 x 10-3 W

350 to 1100

1 cm2


247

Si

W

5.5 x 10-11 to   6.4 x 10-3 W

350 to 1100

1 cm2

Flat Response

261

Ge

W

5.0 x 10-10 to   6.0 x 10-3 W

800 to 1750

~ 0.2 cm2


211

Si

Lux and fc

1.0 x 10-2 to   1.0 x 105 lux

400 - 700

1 cm2


265

Si

Candela/m² and   fL

1.0 x 10-3 to   1.0 x 105 cd/m²

400 to 700

0.34 cm2

High accuracy Photometric filter

(f’1 < 3%); 13° fixed field-of-view;

standard light shield

2153

Si

Candela/m² and   fL

1.2 x 10-2 to   1.0 x 106 cd/m²

400 to 700

1 cm2

High accuracy Photometric filter

(f’1 < 3%); 13° fixed field-of-view

268UVA

Si - UV

W/cm2 @ 365nm

5.0 x 10-10 to   9.0 x 10-4 W/cm2

320 to 400

1 cm2

365nm bandpass filter; opal glass

diffuser

268UVC

Si - UV

W/cm2 @ 254nm

1.0 x 10-8 to   7.5 x 10-1 W/cm2

200 to 280

1 cm2

254nm bandpass filter w/ PTFE

diffuser

S2575

Si

W

3.0 x 10-8 to   9.5 x 10-1 W

400 to 1100

0.34 cm2

260 sensor; 50 mm sphere and 5mm

φ entrance aperture

S2575GE

Ge

W

3.0 x 10-9 to   1.6 W

800 to 1750

0.34 cm2

261 sensor; 50 mm sphere and 5mm

φ entrance aperture

S2575R

Si

W

6.0 x 10-8 to   1.8 W

350 to 1100

0.34 cm2

260 sensor; flat filter, 50 mm sphere

and 5mm φ entrance aperture