Bio Instruments TIR-4T-SDI12 User manual

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Bio Instruments S.R.L.
SENSORS AND SYSTEMS
FOR MONITORING GROWING PLANTS
TIR-4T-SDI12
Pyranometer
Quick Start Guide
phyto-sensor.com

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Introduction
The TIR-4T Pyranometer is a silicon-cell photodiode device
based on the SP‑110-SS Pyranometer (Apogee Instruments,
USA), andcalibrated toestimate allofthesolar radiation energy
inWatts persquare meter.
All silicon-cell photodiode pyranometers sub-sample
the shortwave radiation spectrum (from 360 to 1120 nm),
andarecalibrated topredict allofthesolar radiation (from280
to 2800 nm). For this reason, they should only be used
to measure unobstructed solar radiation. The pyranometers
should not be used to measure electric lights, under canopies
ofvegetation ortomeasure reflected radiation.
Thiscosine-corrected sensorisdesigned tomaintain itsaccuracy
whenradiation comes fromlow zenith angles.
Connection
The sequence and correctness of the connection must
beobserved! Theshield shall begrounded atthedataloggers
side orconnected tothe ‘minus’ contact ofthe power source.
Connection order
1 White Ground
2 Black Shield
3 Yellow SDI12 Input/Output
4 Red Power 5 to24Vdc

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Installation
Keep TIR-4T atvertical position.
Datareading
In accordance with SDI12 Standard (version 1.3).
Power supply
Thesensor is tobe powered froman external regulated power
supply with 5 to24Vdc @5mA output voltage.
Customer support
If you ever need assistance with your sensor, orif you just have
questions or feedback, please e-mail at support@phyto-
sensor.com. Please include as part ofyour message your name,
address, phone, andfax number along with adescription ofyour
problem.
Bio Instruments S.R.L.
20 Padurii St., Chisinau MD-2002
REPUBLIC OFMOLDOVA
Tel.: [phone]
[email protected]
phyto-sensor.com

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Specifications
Calibration Natural sunlight
Measurement range from0 to2000 W m−2
Absolute accuracy ±5%
Repeatability ±1%
Cosine response ±5% at 75° zenith angle
Field ofView 180˚
Spectral Range 360 to1120 nm
Output SDI12
Power supply from5 to24 Vdc @5mA max
Operating temperature 0to50℃
Dimensions 24∅×33Hmm
Mass (with cable) 180g
Cable length 5m
Protection index IP67