Specifications

Accuracy: 25 °C: Typically ± 0.4% of reading [± 3 counts on the least significant digit displayed (all ranges)].

0-55 °C: Typically ± 0.6% of reading [± 3 counts on the least significant digit displayed (all ranges)].

Range Selection: Autoranging (3 ranges).

Sensor Calibration: Calibration multipliers for two sensors are stored in memory. Calibration multipliers are entered from the keypad.

Sensor Averaging: Sensor output is averaged for 15 seconds when AVG key is pressed in Measurement mode. Averages are displayed in HOLD mode to retain the average on the display.

Linearity: ± 0.05%.

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

Storage Conditions: -55 to 60 °C, 0 to 95% RH (non-condensing).

Display: 4 1/2-digit custom LCD display. Updated every 0.5 seconds.

Keypad: Sealed, 5-key tactile response keypad.

Battery Life: 150 hours typical with continuous operation. Automatic shutoff after 25 minutes of inactivity in measurement mode.

Power Requirement: One 9 V alkaline battery or equivalent.

Low Battery Detection: Low battery indicator displayed with approximately 20 hours battery life remaining.

Size: 15 cm L × 8.2 cm W × 3.3 cm D (5.9" × 3.2" × 1.3").

Weight: 0.26 kg (0.57 lbs).

Compatible Sensors: Any LI-COR sensor with BNC connector; Quantum, Pyranometer, or Photometric.

Warranty: 1-year parts and labor.

Range and resolution

Quantum Sensors

Range	Resolution
0-199 µmol s-1 m-2	0.01 µmol s-1 m-2
0-1999 µmol s-1 m-2	0.1 µmol s-1 m-2
0-19999 µmol s-1 m-2	1 µmol s-1 m-2

Pyranometer

Range	Resolution
0-19 W m-2	0.001 W m-2
0-199 W m-2	0.01 W m-2
0-1999 W m-2	0.1 W m-2

Photometric Sensor

Range	Resolution
0-1999 lux	0.1 lux
0-19999 lux	1 lux
0-199 klux	0.01 klux
0-199 fc	0.01 fc
0-1999 fc	0.1 fc
0-19999 fc	1 fc

Unit conversions

Quantum Sensors
1.0 µmol s-1 m-2	= 1 µE s-1 m-2
	= 6.022 × 1017 photons s-1 m-2
	= 6.022 × 1017 quanta s-1 m-2
	= 6.022 × 1013 quanta s-1 cm-2

Pyranometer
1 W m-2	= 1.433 × 10-3 cal cm-2 min-1
	= 1.433 × 10-3 langley min-1
	= 0.100 mW cm-2
	= 100 µW cm-2
	= 1.0 J s-1 m-2
	= 1000 erg s-1 cm-2
	= 0.317 BTU ft-2 h-1
	= 5.283 × 10-3 BTU ft-2 min-1

Photometric Sensor
1 lux	= 1 lm m-2
	= 0.0929 lm ft-2
	= 0.0929 fc
	= 0.001 klux