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Datalogger
LI-1400(제조사 단종, LI-1500 Series 대체)
모델명 LI-1400(제조사 단종, LI-1500 Series 대체)
제조사 LI-COR
원산지 미국
분류명 데이터로거

LI-1400 Datalogger Specifications

Current Inputs: Five channels; three through external sealed BNC connectors, and two through the 1400-301 Standard Terminal Block.

Voltage Inputs: Four high impedance (>500M ohm) single-ended channels accessed through the 1400-301 Terminal Block.

Pulse Counting Input: One pulse counting channel. Switch closure for tipping bucket rain gauge (1 Hz maximum).

Math Channels: 9 math channels. Math channels combine results of two channels with addition, subtraction, multiplication and division operators.

Other math channel functions include fifth order polynomial, Steinhart-Hart function for thermistors, natural log, saturation vapor pressure, and dew point.

Five math libraries are available to store commonly used functions.

Analog-to-digital Converter:

Resolution: 16 bit (1 part in 65,536).
Scanning Speed: 10 channels per second.
Voltage Accuracy: < 0.15% of full scale reading (25 °C). ± 0.2% (0 to 55 °C).
Current Accuracy: ± 0.3% of full scale reading (25 °C). ± 0.5% (0 to 55 °C).
Temperature Coefficient: ± 0.01% of reading per °C.
Linearity: 0.07%.
Frequency Rejection: >90 dB at 50 or 60 Hz (software selectable).                    

 

Input Noise (25 °C)

TypicalMaximum
Voltage± 76 µV± 152 µV
Current± 7.6 picoamps± 30.4 picoamps

 

Voltage Range (Channels V1-V4):

Voltage RangeResolution
± 2.5 volts76 microvolts

 

Current Range Selection: Autoranging.

Current RangesResolution
1 ± 250 nanoamps 7.6 picoamps
2 ± 2.5 microamps76 picoamps
3 ± 25 microamps 760 picoamps
4 ± 250 microamps 7.6 nanoamps

 

Typical Resolution with LI-COR radiation sensors (Range 1)

LI-190 .0015 µmole sec-1 m-2
LI-200 .0001 watts m-2
LI-210 .025 lux

Current Channel Input Impedance: Typically < 0.03 ohm for ranges 1, 2, or 3; < 0.3 ohm for range 4.

Voltage Channel Input Impedance: >500M ohm on voltage channels V1 through V4. 100K ohm for current channels I4 and I5, when configured for voltage input.

D.C. Voltage Excitation: Two regulated: + 5.0 V ± 0.2% at 3 mA; Two unregulated: 9.5V ±10% or higher at 6mA. With external 14V input, unregulated output is ±13.4V.

Logging Periods: Seconds: 1, 5, 15, 30. Minutes: 1, 5, 15, 30. Hours: 1, 3, 6, 12, 24.

Sampling Interval: Seconds: 1, 5, 15, 30. Minutes: 1, 5, 15, 30, 60.

Short Term Averaging: Selectable at 1, 5, 15, or 30 seconds. While averaging, the oldest point is dropped when the newest point is added. A

veraged readings reduce instrument noise by approximately the square root of the number of samples.

Real Time Clock: Year, month, day, hour, minute, seconds.

Accuracy: ± 3 minutes per month (25 °C).

Internal Memory: 96K bytes available for data storage.

Program Memory: Stored in Flash memory for easy upgrades via the RS-232 port.

Communications: RS-232, hardwired Data Terminal Equipment (DTE) through 9-pin port. Baud rates are software selectable at 300, 1200, 2400, 4800 and 9600. Communication is bi-directional.

Battery Requirements: Four Alkaline "AA" batteries in sealed battery compartment.

Back-up Battery: Internal lithium battery maintains memory up to seven years.

Battery Capacity with "AA" Batteries: 60 hours continuous operation.

External DC Power: 7-16 VDC.

Operating Conditions: -25 to 55 °C; 0 to 95% RH, non-condensing.

Storage Conditions: -30 to 60 °C; 0 to 95% RH, non-condensing.

Size: 22L x 13W x 4.3 cm D (8.6 x 5.1 x 1.7”). 9.3 cm (3.7") width of the lower case allows easy hand-held operation.

Weight: 0.7 kg (1.5 lb).

Dataloggers & Light Meters Ordering Information

 

LI-1400 Datalogger

 

Designed for easy connection to LI-COR light sensors. Includes three BNC connectors for use with "SA" version light sensors.

Additional sensors ("SZ" version) can be connected via the 1400-301 Terminal Block (sold separately).

Includes 4 AA batteries, RS-232 Serial Cable, RS-232 to USB Adapter, Windows Communication Software and Instruction Manual. Sensors sold separately.

 

LI-1400 Datalogger Accessories

 

1400-301 Standard Terminal Block
 1400-320 Storage Case
 1400-401 AC Power Supply  (110V only) *
 1400-402 External Alkaline Battery Pack *
 Requires 6 D Cell batteries (not included).
 1400-101 Air Temperature Sensor with 6 m (20 ft) cable *
 1400-102 Air Temperature Sensor with 0.6m (2 ft) cable *
 1400-103 Soil Temperature Sensor with 6 m (20 ft) cable *
 1400-104 Relative Humidity/Air Temperature Sensor (Viasala) *
 Includes 2.75 m (9 ft) cable.

* Requries 1400-301 Standard Terminal Block in order to connect to LI-1400 Datalogger

파일명 확장자 다운로드
 LI-1400[Brochure].pdf (3MB)


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