Martindale LM90 Light Meter

  • Measures from 20 to 20,000 Lux to a resolution of 0.01 Lux.
  • Conversion factors for different wavelengths are provided for more accuracy.
  • Suitable for low light applications such as checking emergency lighting.
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rrp £115.00

now £95.00 (Ex. VAT) £114.00 (Inc. VAT)

rrp £115.00


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"Ideal For Certifying Emergency Lighting"

  • Description

    Martindale LM90 Light Meter

    The Martindale LM90 Light Meter is capable of measuring the level of light from 20 lux to 20,000 lux and resolves down to 0.01 lux. The LM90 Lux Meter is therefore ideal for detecting illumination in very low light applications such as certifying emergency lighting.

    This Martindale Light Meter has peak hold and hold functions that allow a maximum reading or user specified reading to be kept. Light level results are clearly displayed in either lux or foot candles.

    In addition, the LM90 Light Meter is supplied with a manual that provides details of conversion factors for different light wavelengths so that more accurate measurements can be taken.

  • Specification

    Light Measurement Ranges

    • Lux: 20, 200, 2000, 20,000
    • Foot candles: 20, 200, 2000, 20,000
    • Resolution: 0.1 lux, 0.1fc
    • Spectral Response: CIE Photopic
    • Total accuracy for CIE standard illuminant A (2856K):+/- 3% reading + 10 digits

    Photometric Formulas

    • 10.764 foot candles = lux (lumens/meter2)
    • 0.0929 lux = foot candles (lumens/ft2)
    • Power Supply: 9V battery (PP3 / MN1604)
    • Dimensions: 190 x 65.5 x 35mm
    • Weight: 210g
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  • Reviews

    Review by Rachel Clayton (Posted on 02/04/2014)
    I use this for measuring light levels on our companies emergency lighting, it does exactly what is required.

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  • Delivery Information

    At we understand the importance of a reliable delivery service when shopping online. Especially when the goods are often essential to your working day. If your goods are required by a certain date please feel free to contact us for an honest and realistic indication whether this can be met.

    We use DPD/Interlink for all larger items and Royal Mail for smaller items and accessories. With DPD/Interlink you will receive a 1 hour delivery window on the day of delivery via e-mail/text so you will not have to wait around all day. We also offer delivery options for goods required urgently on certain products, all which are sent by DPD/Interlink on a fully traceable and manageable service.

    Our charges for UK deliveries:

    • FREE Delivery (on select products only): typically 2-5 working days*
    • Standard Delivery at £4.95: 2-3 working days
    • Next Working Day Delivery (on select products only) at £8.95
    • Pre 10.30am Next Working Day Delivery (on select products only) at £19.95*
    • Saturday Pre 12pm Delivery (on select products only) at £19.95*
    • Sunday Pre 12pm Delivery (on select products only) at £19.95*

    *UK mainland only

    NOTE! For next working day or Saturday delivery options the order MUST be placed no later than 3pm on the working day before delivery is required. After 3pm, please arrange with our staff before selecting a priority delivery service. Priority services are available to UK mainland residents only.

    Customers outside the UK: exports to many countries all over the world. Prices for shipping vary on location and weight/dimensions. Costs are calculated for certain countries at the checkout. If your country is not included in this list please e-mail with your name, address and the items you would like to order for an accurate shipping quote.