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Minolta TL-1 Illuminance Meter
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Features:
- Easy Operation
- Easy-to-Read Liquid Crystal Display Panel
- Wide Total Measuring Range With Automatic Range Selection
- Receptor head can be swiveled approximately 280°
- Meter is automatically switched off after approximately 20 seconds to conserve battery power
- By using the optional ND Cap TL-A20, illuminances up to 199,900 lx or 19,990 ft-c (depending on the model) can be measured.
- Includes case (TL-A12), cap(TL-A10), and strap (TL-A11)
Applications:
- Control and conservation of lighting in factories, offices, hospitals, theaters, etc.
- Optical experiments in schools, laboratories, research centers,
- Quality control of tungsten or fluorescent lamps.
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Description
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Portable, lightweight [only 180g, (6-3/8 oz.) including battery], and easy to use, the Minolta Illuminance Meter TL-1 measures illuminance in a variety of applications. In addition to use in specialized fields, such as interior design and installation of electrical fixtures, the TL-1 is ideal for general applications, including measuring lighting levels in the home, office, restaurant, school, etc. Two models of the TL-1 are available: the TL-1 (lx) measures illuminance in lux (lx) from 0.1 to 19,900 lx; the TL-1 (ft-c) measures illuminance in foot-candles (ft-c) from 0.01 to 1,999 ft-c. The wide total measuring range of either model is divided into three smaller ranges, one of which is automatically selected to provide the highest possible resolution for the measured illuminance level. Both models also utilize easy-to-read digital LCD (liquid crystal display) panels, which are automatically switched off after approximately 20 seconds to conserve power.
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Models, Options, & Accessories
| Model |
Description |
List Price |
Sale Price |
| TL-1-FC |
ILLUMINANCE METER TL-1 (Ft-Candles), Part No: 1881-200 |
| $495.00 |  |
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| TL-1-LUX |
ILLUMINANCE METER TL-1 (Lux), Part No: 1881-100 |
| $495.00 | |
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| Model |
Accessories |
List Price |
Sale Price |
| TL-A12 |
CASE TL-A12, Part No: 1881-600 |
| $19.00 | |
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| TL-A10 |
CAP TL-A10, Part No: 1881-700 |
| $8.00 | |
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| TL-A11 |
STRAP TL-A11, Part No: 1881-701 |
| $4.00 | |
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| TL-A20 |
ND CAP TL-A20, Part No: 1881-710 |
| $94.00 | |
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Specifications
| Type |
Illuminance meter with digital liquid crystal display |
| Receptor |
Silicon photodiode |
| Spectral response |
Within ±4% from CIE photopic standard observer curve |
| Cosine error |
Within ±3% at 30°; within ±10% at 60° |
| Display |
3-1/2 digit digital liquid crystal display |
| Measurement range |
TL-1 (lx): 0.1 - 19,990 lx; TL-1 (ft-c): 0.01 - 1,999 ft-c; both units provide automatic selection of one of three smaller ranges; measurement range expandable to 1 - 199,990 lx for TL-1 (lx) or 0.1 - 19,990 ft-c for TL-1 (ft-c) by using optional ND Cap TL-A20 |
| Accuracy |
Within ±5% of reading ±1 digit |
| Temperature error |
Within ±3% [at temperatures between 0 and 40°C (32 and 104°F) based on illuminance measured at 23°C / 73°F |
| Operating conditions |
0 to 40°C (32 to 104°F) at less than 85% humidity |
| Storage conditions |
-20 to 55°C (-4 to 131°F) |
| Power Source |
One 9V battery |
| Dimensions |
68 x 166 x 32mm (2-11/16 x 6-1/2 x 1-1/4in.) |
| Weight |
180g (6-3/8 oz.) including battery |
| Standard accessories |
Case TL-A12; Receptor Cap TL-A10, Strap TL-A11, 9V battery |
| Optional accessories |
ND Cap TL-A20; optical density d=1.0, (transparence ratio= 10%) |
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