NEPAL ENGINEERING COLLEGE ELNAB Project

Technical Specifications for Supply, Delivery, Installation and Testing of Lighting Measurement Equipment

June, 2017

Nepal Engineering College Changunarayan Bhaktapur Nepal Tel: 977-1-5221003 Email: [email protected] 1

S. Item Description No. 1. Illuminance Meter Hand held illuminance with detachable receptor 2. Luminance Meter Hand held luminance meter with SLR viewing system 3. Spectroradiometer Modular Spectroradiometer system with integrating sphere, AC &DC power source and power meter 4. Portable Goniophotometer Portable Goniophotometer with AC and DC power source and power meter 5. Installation and commissioning Installation and commissioning on site or industry

2

Quantity

Unit of Measure

2.00

each

1.00

each

1.00

each

1.00

each

1.00

each

Technical Specification Technical Specification for procurement of equipment. 1) Illuminance Meter Measuring parameters: Illuminance, illuminance difference, illuminance ratio, integrated illuminance, integration time and average illuminance. Technical requirements SN 1 2 3 4

Description Receptor placement Receptor sensor material Receptor cord length Measurement range

Specification Detachable Silicon photocell

5

Relative spectral response

Percentage of CIE V(λ) for photopic vision

6 7 8 9 10 11

Cosine correction Linearity limit Operating temperature Storage temperature Temperature humidity drift User calibration function

12 13

Output Display

14

Power source

Automatic and manual

Value/Range

Remarks

> 1m 0.01 to 2,90,000 Lux <6% <3% ±2% -10 to 40 °C -20 to 55 °C ±3%

Color correction factor setting Digital and analog LCD with automatic backlight Battery and AC adaptor

Should have port for both analog and digital output of measured data. 2) Luminance Meter Measuring parameters: Point illuminance measurement of light source and surface with measurement modes for instantaneous value, maximum/minimum value, luminance difference and luminance ratio. Technical requirements SN 1 2 3 4 5 6 7 8 9

Description Optical system Angle of view Measuring angle Measurement range Relative spectral response Spectral response mismatch Minimum measurement area Operating temperature Storage temperature

Specification SLR viewing system With dipole adjustment Automatic and manual Close to CIE V(λ) mismatch index (f1')

3

Value/Range 9° 1 ° or 1/3 ° 0.01 to 999,900 cd/m2 <3% <14mm 0 to 40 °C 0 to 45 °C

Remarks

10 11 12 13 14

Accuracy User calibration Output Display Power source

Calibration channel Digital and analog LCD with automatic backlight Battery and AC adaptor

±2% 10

Should have port for digital interface. 3) Modular Spectroradiometer system with integrating sphere, AC and DC power source and power meter Measuring parameters: Spectral data and calculation of luminous flux, chromaticity coordinates, CCT, CRI, luminous efficacy, radiant power, Colour purity, power factor, RSPDF Technical requirements i.

Integrating sphere and Spectroradiometer

S N 1 2 3

Sphere size Sphere coating Sphere reflectance

4

Baffles location and coating

5

Auxiliary lamp

6 7 8 9

Luminous flux range Luminous flux accuracy Luminous flux resolution Colour temperature range Spectroradiometer entrance port of integrating sphere with cosine correction Measuring wavelength range Wavelength uncertainty Wavelength accuracy Wavelength resolution Linearity correction Chromaticity coordinates accuracy Chromaticity coordinate resolution Bandwidth and scanning interval Measurement standard Repeatability of measurement after opening and closing the sphere Calibration

10 11 12 13 14 15 16 17 18 19 20 21

Description

Specification Diameter High reflectance diffused Non selective in visible range Inside the sphere with high disused reflectance Mounting on lamp to allow selfabsorption measurement

Cosine correction with a value of f2

Visible range

Under standard illuminant

Value/Range 1.5m >90%

Halogen lamp 50-20000lm 3%f.s.+0.001lm 0.001lm 1300-25000k <15%

380nm to 780nm <0.5nm ±0.5nm 0.1nm >99.8% ± 0.002 0.0001 <5nm

4π measurement complying LM79 ±0.5%

Reference calibration standard

4

Rem arks

traceable to SI. Capability of calibrating from both software and hardware end. 22 23 24 25 26 27 28

ii.

Built in power source Power source Current supply range Voltage range Forward and reverse voltage accuracy Constant current supply accuracy Stability drift

Rated output

2

Load regulation

3

Power source regulation

4

Set point resolution

5

Backward read resolution

6

Setpoint accuracy 1 year (25℃±5℃)

7

Backward read accuracy 1 year (25℃±5℃)

8

Ripple and noise (20HZ-20M)

9

Dynamic response time (return to 75mV)

SN 1

1-15000 mA 0-20V 0.02V 0.02%+0.1mA Within 3 minutes

0.002

Programmable DC power source Should be constant current and constant voltage power source for powering DC lamps and DC luminaires. Capability of adjusting from hardware and remotely from software of Spectroradiometer.

S N 1

iii.

Constant current power source

Description

Parameter Voltage/Current Voltage Current Voltage Current Voltage Current Voltage Current Voltage Current Voltage Current difference-mode voltage difference-mode current Common-mode current 50%-100% load drop 10%-90%

Value/Range

Remark s

0-32V/0-6A ≤0.01％+5mV ≤0.01％+3mA ≤0.01％+5mV ≤0.01％+3mA 1mV 0.1mA 1mV 0.1mA ≤0.04％+8mV ≤0.1％+8mA ≤0.04％+8mV ≤0.1％+8mA ≤4mVp-p and 1mVrms ＜6mArms ＜1.5uArms 100 ＜350ms

Programmable variable frequency AC power source Description Power

Value/Range 1KVA

5

Remarks

2

AC input

3

AC output

4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Allowance error Variable frequency range Fixed frequency output Frequency stability Voltage stability Distortion Crest factor Source voltage effect Loading effect Efficiency Frequency display Voltage display Current display Power display Power factor display

19

Preset function

20

Shortcut function

21

Protection

iv.

single phase 220V±10% 50Hz±5Hz Downshift: 0-150V Top shift: 151-300V; resolution 0.1V ±1%; 45Hz -400Hz, resolution 0.1Hz 50 Hz ≤0.1％ ≤1％ ≤2％(resistive load) 3:1 ≤1％ ≤1％ ≥80% 4 digits LED, resolution 0.1Hz 4 digits LED, resolution 0.1V 4 digits LED, resolution 0.001A/0.1A 4 digits LED, resolution 0.01W/0.1Kw 3 digits LED, resolution 0.01 Preset for output voltage, output frequency, float percentage of output voltage Common voltage, frequency conversion and output voltage float choice Overload and overheat protection

AC and DC digital power meter.

Should be capable of measuring voltage, current, power and power factors of AC, DC or AC+DC. Digital communication port with data acquisition system. SN Description Value/Range Remarks 1 Voltage measurement range 0-600 V AC and DC 2 Voltage measurement error <0.4% 3 Current measurement range 0.005A-10.00A AC and DC 4 Current measurement error <0.4% 5 Power factor measurement range 0.000 – 1.000 6 <0.4% Power factor measurement error 4) Portable Goniophotometer Goniophotometer should be portable plug and play system with weight less than 10 Kg. Measurement and power supply unit should be modular with AC and DC power source and power meter. Measuring parameters: Luminous intensity distribution, beam angle and lumen output

Technical requirements i)

Goniophotometer and measurement system

6

SN 1 2 3 4 5 6

Description Average lumens error Intensity accuracy Measurement resolution Test sample rotation Test sample rotation LED base type support

7

Computer interface

8 9 10 11 12

Spectral range Spectral resolution Accuracy Reference Temperature sensor

ii.

Rated output

2

Load regulation

3

Power source regulation

4

Set point resolution

5

Backward read resolution

7

8 9

SN

Vertical rotation range Horizontal rotation range

Value/Range <10% <3% At least 0.1 degree 0 to 360 degree -90 to +90 degree E27, B22, E18 and GU10

Remarks

Digital interface with dedicated software 380 to 780 nm <5nm Accuracy class 1 Standard reference lamp High accuracy temperature detector

Programmable DC power source Should be constant current and constant voltage power source for powering DC lamps and DC luminaires. Capability of adjusting from hardware and remotely from software of goniophotometer

S N 1

6

Specification

Description

Setpoint accuracy 1 year (25℃±5℃) Backward read accuracy 1 year (25℃±5℃)

Parameter Voltage/Current Voltage Current Voltage Current Voltage Current Voltage Current Voltage Current Voltage Current difference-mode voltage

Ripple and noise (20HZ-20M)

difference-mode current Common-mode current 50%-100% load Dynamic response time drop 10%-90% (return to 75mV) . iii. Programmable variable frequency AC power source Description

Value/Range

7

Value/Range

Remark s

0-32V/0-6A ≤0.01％+5mV ≤0.01％+3mA ≤0.01％+5mV ≤0.01％+3mA 1mV 0.1mA 1mV 0.1mA ≤0.04％+8mV ≤0.1％+8mA ≤0.04％+8mV ≤0.1％+8mA ≤4mVp-p and 1mVrms ＜6mArms ＜1.5uArms 100 ＜350ms

Remarks

1 2

Power AC input

3

AC output

4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Allowance error Variable frequency range Fixed frequency output Frequency stability Voltage stability Distortion Crest factor Source voltage effect Loading effect Efficiency Frequency display Voltage display Current display Power display Power factor display

19

Preset function

20

Shortcut function

21

Protection iv.

1KVA single phase 220V±10% 50Hz±5Hz Downshift: 0-150V Top shift: 151-300V; resolution 0.1V ±1%; 45Hz -400Hz, resolution 0.1Hz 50 Hz ≤0.1％ ≤1％ ≤2％(resistive load) 3:1 ≤1％ ≤1％ ≥80% 4 digits LED, resolution 0.1Hz 4 digits LED, resolution 0.1V 4 digits LED, resolution 0.001A/0.1A 4 digits LED, resolution 0.01W/0.1Kw 3 digits LED, resolution 0.01 Preset for output voltage, output frequency, float percentage of output voltage Common voltage, frequency conversion and output voltage float choice Overload and overheat protection

AC and DC digital power meter.

Should be capable of measuring voltage, current, power and power factors of AC, DC or AC+DC. Digital communication port with data acquisition system. SN Description Value/Range Remarks 1 Voltage measurement range 0-600 V AC and DC 2 Voltage measurement error <0.4% 3 Current measurement range 0.005A-10.00A AC and DC 4 Current measurement error <0.4% Power factor measurement 5 0.000 – 1.000 range 6 Power factor measurement error <0.4%

8