The VL-3701 is an illuminance detector head whose photometric responsivity and cosine field of view correspond to the DIN 5032 - Article 7 quality class A. The detector can be combined with all optometers and light meters from Gigahertz-Optik. 

Traceable calibration 

The VL-3701 is calibrated in terms of its absolute illuminance responsivity and relative spectral responsivity by the Gigahertz-Optik calibration laboratory for optical radiation measurands. The calibrations are documented in an individually compiled calibration certificate. The design and contents of the calibration certificate are in accordance with the ISO 17025 specifications.

VL-3701 typical V(λ) responsivity

Calibration
Calibration K-VL3701-I

Calibration of the illuminance responsivity in A/lx using a halogen calibration lamp with a color temperature of 2856K and 1600 lx.

Calibration K-VIS-SR

Calibration of the relative spectral responsivity in the visible spectral range

Calibration KDW-P

Calibration of the photometric responsivity in connection with the accessories

Calibration K-FOV

Calibration of the cosine field of view function

Specification
Spectral function

photometric V(λ)

V(λ) matching error

f1 ≤ 3 %

Typ. responsivity

0.5 nA/lx

Max. signal current

1 mA

Measurement entrance

Diffuser window 7mmØ

Cosine matching error

f2 ≤ 1.5 %

Connection cable

coaxial cable 2m Long, with BNC (-1), calibration data (-2) or ITT (-4) connector

Operation temperature

5 - 40°C

typical V(λ) responsivity

vl3701 1

Options
Option /WQ

Optional waterproof retrofitting of the VL-3701 detector using quartz dome and o-ring reinforcement of the base plate.

Type Description File-Type Download
Datasheet VL-3701 PDF
VL-3701-1 Dimension PDF
VL-3701-2 Dimension PDF
VL-3701-4 Dimension PDF
Produktname Product Image Description Show product
P-9710 High-quality device for measurement of CW-, single pulse and modulated radiation.

Features: Optometer for all detector heads with calibration data plug. Measurement modes: CW, pulse energy, dose, peak-to-peak, effective luminous intensity (Blondel-Rey), data logger, battery, main power, RS232
X1 Four-channel USB/RS232 optometer designed for mobile use.

Features: Compact device for use with all photometric, radiometric, colorimetric, plant-physiologic and photo-biologic measurement heads from Gigahertz-Optik. USB and RS232 interface. Battery operation or power supply USB.
X1-RM Optometer in 3HE housing for use in 19” racks.

Features: Its USB and RS232 remote interface and two additional RS232 device interfaces make the device highly flexible when it comes to system integration. Its four signal inputs enable use with all photometric, radiometric, colorimetric, plant-physiologic and photo-biologic measurement heads from Gigahertz-Optik.
X1-PCB Optometer module.

Feature: The X1 optometer is available as a printed circuit board either with or without a housing and is suited for applications that do not require a keyboard or display. Four signal inputs enable connection with all measuring heads from Gigahertz-Optik.
P-2000 Two-channel optometer.

Features: For use with most photometric and radiometric detectors supplied by Gigahertz-Optik. Modes: CW, pulse energy from both single and multiple flashes, effective luminous intensity (Blondel-Rey), data logger and others.
P-9801 Eight-channel optometer.

Features: State-of-the-art 8 channel laboratory optometer with a signal amplifier and sample & hold ADC per channel for clocked recording of the measurement signals. RS232 and IEEE488 interface. Trigger input and output.
P-9802 Light meter for laboratory use with up to 36 measurement heads.

Features: For use with up to 36 photometric and/or radiometric measurement heads. RS232 interface.
TR-9600 High-speed 1µs or 100ns rise time data logger optometer.

Features: Laboratory device for recording of clocked intensity progress readings in single light flashes, flash sequence or modulated light. Calculation of pulse data e.g. peak intensity, pulse length, pulse half width , pulse energy and pulse repeat rate, etc.
P-9202-4 Fast response time trans-impedance signal amplifier.

Features: High quality analogue amplifier with current-voltage conversion. Minimal diode offset voltage for short circuit operations. Bandwidths of up to 330kHZ. 1µs rise time. Large I-U amplification range from 10pA/V to 1mA/V.
P-9202-5 Universal trans-impedance signal amplifier.

Features: High quality analogue amplifier with current-voltage conversion. Minimal diode offset voltage (1mV) for short circuit photodiode operations. 20ms to 5s rise time depending on the amplification. Large I-U amplification range – 1×10-10A/V to 1×10-3 A/V.
P-9202-6 Highly sensitive trans-impedance signal amplifier.

Features: High quality analogue amplifier with current-voltage conversion with minimal diode offset voltage (0.5mV) for short circuit photodiode operation of . 2.5s to 25s rise time depending on the amplification. Large I-U amplification range – 1×10-11A/V to 1×10-4 mA/V.
Article-Nr Modell Description Notice
Product
100012 VL-3701-1

Detector with –1 connector, protective cap, calibration certificate

100006 VL-3701-2

Detector head with –2 connector, protective cap, calibration certificate

15297138 VL-3701-4

Detector head with –4 connector, protective cap, calibration certificate

Calibration
15300577 K-FOV

Calibration, calibration certificate

15300178 K-SAZ-08

Simulated calibration correction factors for visible LED sources out of the Gigahertz-Optik GmbH lamp emission spectrum database. Monochromatic LEDs in 10nm steps and white LEDs.

Re-calibration
15300155 K-VL3701-I

Re-calibration, calibration certificate

15300580 K-SI-SR

Re-calibration, only together with K-RW-3701-I

Options
100150 /WQ

Optional waterproof retrofitting


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