ULM-500 Universal Light Meter & Data Logger

**Specifications:

**

Design: Light grey plastic housing with connectors, membrane keyboard and a white illuminated LCD graphic display

Dimensions: 12 x 7.5 x 3.5 cm

Weight: 210 g (including 4 AAA 1.5 V batteries)

Power supply: 4 AAA-type batteries or 5 V DC from USB voltage source when connected to the computer

Working conditions: 35 to 85 % rH (avoid condensation), - 20° to + 50°C ambient temperature

Time resolution: PAR channel #1: 100 samples / second, PAR channel #2 and other channels: 5 samples / second

Operation time: 10 days or ca. 100 days automated logging with sleep mode (1 meas. / 5 min). Unlimited working time via USB connection (PC-software WinControl-3 – no sleep mode)

Inputs:

• Two BNC-connectors for the connection of two PAR-sensors with individual calibration factors between -50.0 and -9999.9 (memory for 10 calibration factors), range switchable in 5 steps 250 nA to 0.6 mA

• Connector for Monitoring Leaf-Clip JUNIOR-B; an adapter is available for the connection of the Leaf-Clip Holder 2030-B, and the Micro Quantum/Temp.-Sensor 2060-M

• Connector for additional digital sensors (still under development)

• USB-Connector for connection with computer (software: WinControl-3)

Memory: Flash memory used as ring buffer for 50000 lines (1 line / single measurement)

Display: White illuminated graphic display with 5 different display modes (1: all data; 2-4: two selected sensors in big letters; 5: chart mode for channel no. 1, with maximum, minimum and average indicated), resolution: 0.1 μmol m-2 s-1

Computer-controlled Operation: 1 free USB socket. Processor, 1 GHz. RAM, 256 MB. Hard disc space, 20 MB. Screen resolution: 800 x 600 pixels. Interface, USB 1.1, 2.0 and 3.0. Operating system: Microsoft Windows XP/Vista, Windows 7 and 8.

Accesories:

Spherical Micro Quantum Sensor US-SQS/L:

Spherical Micro Quantum Sensor US-SQS/L is designed for light measurements in suspensions and cuvettes in units relevant for chloroplasts or algae. The US-SQS/L measures photosynthetically active radiation (PAR), which is the visible electromagnetic radiation between 400 and 700 nm.

Cosine Corrected Mini Quantum Sensor MQS-B:

The Cosine Corrected Mini Quantum Sensor
MQS-B is designed for light measurements in units relevant for plant leaves. For photosynthesis research, sensors with spectral and directional sensitivity relevant for plants are required. The MQS-B sensor detects photosynthetically active radiation (PAR).

Mini Quantum Sensor LS-C:

The Mini Quantum Sensor LS-C is a miniaturized, flat sensor that can be placed close to leaves in small spaces, for example within cuvettes. The LS-C measures photosynthetically active radiation (PAR). The sensor is well suited for light incident perpendicular to the surface between -30° and + 30°.

**Adapter for Connection of Leaf Clip Holder 2030-B and 2060-M:
**
By the use of this adapter, the leaf temperature and light sensors of the Leaf Clip Holder 2030-B and the Micro Quantum Temperature Sensor 2060-M can be readout with the ULM-500.