Brooks Intelligent Light Level Sensors - NILS5

(previous versions NILS1/NILS1C/NILS2/NILS3/ NILS4)

Brooks Light Sensor Tate Britain Tate Britain Brooks Light Sensor Brooks Light Sensor Brooks Light Sensor

NILS is an intelligent, wall-watching light-level sensor.

It locates discretely on the lighting track, or other high-level location, and works by back-calculating the incident light from the reflected light collected.

In a typical room, 4 - 12 sensors are distributed around the display areas to give the BMS or Control System a set of spot readings to monitor or control lighting from.

The sensor electronics and optics can be mounted into various fittings or enclosures, and there is also a triple-redundant version available, for extra sensitive areas.

We are now shipping our 5th Generation design, NILS-5.

NILS-5 features greatly miniaturised circuitry with simplified system wiring, a finer beam angle, digital (MODBUS) BMS connection, and targetting LEDs.

The table below compares it with previous generations.


Sensor

ESSEX / NILS1/2/3/3+

NILS 4

NILS4 +

NILS 5

Availability

Repair Only

Now

Now

April 2016

Cabling

3 pairs (Belden8777)

3 pairs (Belden8777)

2 pairs (Belden8723) or Cat5

2 pairs (Belden8723) or Cat5

Connections

15v PSU, RS422 & 4-20mA

15v PSU, RS422 & 4-20mA

12v PSU & RS485

12v PSU & RS485

Sensor Plug

DIN-6

DIN-6

XLR-4 / 4P4C

XLR-4 / 4P4C

Normal Lux Ranges

0-600 or 0-500

0-600 or 0-500

0-600

0-600

Extended Lux Range

n/a

0 1k

0 1k

0 50k

Calibration Delay

Up to 20 secs

Up to 20 secs

Up to 20 secs

1 sec (typical)

Resolution

2.5 Lux

1 Lux

1 Lux

1 Lux

Linearity (typical) **

2%

2%

2%

1%

Monitoring Beam Angle

10

10

10

2 / 4

Targeting / ID Assist

n/a

n/a

n/a

Through-lens double LEDs

Housings

Erco Domotec / Custom

Erco Domotec / Custom

Erco Domotec / Custom

Erco Domotec / Small Custom

BMS Interface

4-20mA Current Loop

4-20mA Current Loop

MODBUS ASCII 9600

MODBUS ASCII 9600

Error from Interface (Max)

3 Lux

3 Lux

0 Lux

0 Lux

Sensors per LDPSU*

6 (LDPSU4)

6 (LDPSU4)

8 (LS-HUB5)

8 (LS-HUB5)

Cabling Connections

Screw Terminal

Screw Terminal

4P4C / Screw Terminal

4P4C / Screw Terminal

* Multiple LDPSUs (Line Driver Power Supply Units, or HUBs) can be chained in a single gallery if more sensors/plug-ins are required, up to 32 per gallery

** Linearity is specified for the Normal Range only, for extended range, will typically be 5%

Brooks Light Level Sensor National Gallery Location Tate Britain Tate Britain

Our sensors are used extensively at the National Gallery in London ( Maximising the appropriate use of natural light, Trend BMS Controls, OpenTechnologyUK Case Study ), National Portrait Gallery ( Modern Building Services ), Tate Britain ( Max Fordham - Lighting Design Awards, Caruso St John Architects ), and Dulwich Picture Gallery in London, the National Museum of Wales in Cardiff, and at the Getty Center, Los Angeles.
Recent projects include the Sainsbury's Centre for Visual Arts (SCVA) at UEA Norwich ( Somfy ), Damien Hirst's Newport Street gallery in London ( Stirling Prize ), and the Whitworth Art Gallery in Manchester. Amongst those upcoming this year are the Hayward Gallery at the Southbank Centre, London, and Tate St Ives.

Light Sensor Curves

NILS-5 Data Sheet ( older NILS Data Sheet )

NILS5 / HUB5 Wiring System ( older NILS4 Star Wiring System )

Brooks Light Sensor Calibration - Version 1.26 the latest version of the calibration/monitoring software (Released 8/6/17)

Now includes Multi-Sensor Plot, Find Sensor, and Laser Sighting Dot control


Contact us for more details

Please note the correct spelling of our name: BROOKS. This has been misquoted by others as "Brookes light sensors" and even "Bookes light sensors" ! Please update any consultant documentation you may have.