Specifications:
- Current Inputs: 3 BNC connectors (used to connect LI-COR sensors)
- Output Channels:
- Light
- Math Channels: 8 math channels (addition, subtraction, multiplication, division, natural logarithm, integration, daily integration, attenuation)
- GPS (optional)
- Prompt
- Battery Voltage
- Input Channel Specifications:
- Frequency Rejection: >70dB at 50 or 60 Hz (1 input channel @ sampling rates of 1, 2, 5, 10, 20Hz)
- Current Accuracy: ±0.3% of full scale reading @25°C
- Signal Ranges:
-
Range # Current Range Resolution (Typical) 1 0 – 0.250 µA (micro-amps) 0.0305 nA (nano-amps) 2 0 – 2.50 µA (micro-amps) 0.1525 nA (nano-amps) 3 0 – 25 µA (micro-amps) 1.525 nA (nano-amps) 4 0 – 250 µA (micro-amps) 15.25 nA (nano-amps)
-
- Raw Mode (1 – 500 Hz): Selectable Range
- Standard Modes (Continual, Manual, Daily, One Time):
- Auto range for total sampling rate ≤ 3 Hz (ex. 1 Hz sampling on 3 input channels)
- Fixed range (selectable) for total sampling rates > 3 Hz (e.g. 2 Hz sampling on 2 input channels)
- Sampling Rates:
- Standard Modes: 0.01 Hz, 0.1 Hz, 1 Hz, 2 Hz, 5 Hz, 10 Hz, 20 Hz
- Raw Mode: 1 – 500 Hz (1 Hz through 500 Hz in whole number increments)
- Logging Rates:
- Standard Modes Sampling: Every Sample, 100 msec, 200 msec, 500 msec, 1 sec, 5 sec, 10 sec, 15 sec, 30 sec, 60 sec, 100 sec, 5 min, 15 min, 30 min, 1 hr, 2 hr, 3 hr, 6 hr, 12 hr, 24 hr
- Raw Mode Sampling: Every sample (1 – 500 Hz)
- Averaging:
- Raw Mode Sampling: No averaging
- Standard Modes: depends on sampling rate (see table below)
SMP\AVG 100 msec 200 msec 500 msec 1 sec 5 sec 10 sec 15 sec 30 sec 60 sec 100 sec 5 min 15 min 30 min 1 hr 2 hr 3 hr 6 hr 12 hr 24 hr 0.01 Hz X X X X X X X X X 0.1 Hz X X X X X X X X X X 1 Hz X X X X X X X X 2 Hz X X X X X X X X 5 Hz X X X X X X X X 10 Hz X X X X X X X X X 20 Hz X X X X X X X X X
- Display: 128 × 64 graphics display
- Real-Time Clock:
- Year, Month, Day, Hour, Minute, Seconds
- Accuracy of ±3 minutes per month
- Data Storage Capacity: 1 GB (FAT16 file system)
- Communications: USB (as mass storage device)
- Global Positioning System (Option) — GPS RADIONOVA® RF Antenna Module:
- Horizontal position accuracy: 2.5 m CEP (50% Circular Error Probability, Open-Sky, 24hr Static, good view of the sky).
- Maximum position update rate: 1 Hz.
- GPS receiver sensitivity, autonomous acquisition: -148dBm.
- WAAS enabled receiver
- Time to first fix (TTFF), hot start: 1 second.
- TTFF, warm start: 6 seconds (typical).
- TTFF, cold start (with good view of the sky): 37 seconds at 90% probability.
- Power Supply Options:
- 4 “AA” size batteries
- USB, AC-DC power adapter
- USB, external battery power pack (customer supplied)
- Battery Life:
- 80 hours life (typical usage of 1 Hz sampling rate and logging rate)
- 40 hours life (typical usage with GPS option on)
- Environmental Conditions:
- Operating Temperature Range: -20 to 50°C
- Humidity Range: 0 to 95% RH (non-condensing conditions)
- Storage Temperature Range: -40 to 65°C
- Size: 20.9 × 9.8 × 3.5 cm (8.2″ × 3.9″ × 1.4″)
- Weight: 0.454 kg (1.0 lb) with batteries
The LI-1500 connects up to three light sensors with BNC terminals. Package includes four AA batteries, USB cable, AC power supply adapter, carabiner clip, carrying case, Windows® file viewer software, and instruction manual. Sensors sold separately.
Catalogue: PDF
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