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SENSORS AND SYSTEMSFOR MONITORING GROWING PLANTSPIR-1MQuantum (PAR) Sensorwww.phyto-sensor.com
IntroductionThe PIR-1M Quantum Sensor measures PhotosyntheticPhoton Flux (PPF) in µmol·m 2·s 1. The sensor is cosinecorrected, and has a domed diffusion disk and headfor improved self-cleaning characteristics and long-termstability. The cosine error for typical applicationsis less than 2%. The output increases approximately1% per yearbecauseof changesin the opticaltransparencyof the diffusiondisk.Quantumsensor is calibrated for sunlight. Average spectral errorsassociated with different light sources is shown below: Cool White Fluorescent: 8% high. Metal Halide: 6% high. High Pressure Sodium: 0% error.The probe is connected by a standard 3-meter cableto the waterproof box with the signal conditioner inside.The output cable length should be specified in the orderif required.3
InstallationThe PIR-1M Sensor is supplied with the stainless steelbolt for mounting to a solid surface. When supplied withthe tripod, there is a special holder for mounting on it.Keep PIR-1M at vertical position.SignalConditioner3-mcableInletfor output cable4
ConnectionFor models supplied without output cable, please usea four-core cable with 3 to 6 mm outer diameter.The connection diagram is shown in the picture below:Current (4-20 mA) outputCurrent output groundVoltage (0-2V) outputVoltage output groundPower 10-30VdcPower groundConnection schemeMaximal length of the output cable is 10 m for sensorswith voltage output and up to 200 m for sensors with4 to 20 and 0 to 20 mA output.For models supplied with the optional output cable,please refer to a wiring diagram attached to the sensor.5
Calibrations tableV0.0002.000mA4.00020.000PPF02000Calibrations equationsPIR-1M model: PPF (µmol·m 2·s 1) 1000 Uwhere U – output voltage in VoltsPIR-1Mi model: PPF (µmol·m 2·s 1) 125 I– 500where I – output current in mA6
SpecificationsCalibrationNatural sunlightMeasurement rangeOutput0 to 2000 µmol·m 2·s 1PIR-1MPIR-1Mi0 to 2 VDC4 to 20 mAAbsolute accuracy 5%Repeatability 1%Operating temperature0 to 50 Supply voltagePower10 to 30 VDCPIR-1MPIR-1Mi0.5 W max1 W maxSensor dimensions, mm24 27.5 HProtection index of signalconditionerIP 64Cable length between probeand signal conditioner1m7
Bio Instruments S.R.L.20 Padurii St., Chisinau MD-2002REPUBLIC OF MOLDOVATel./Fax: .com
Power PIR-1M PIR-1Mi 0.5 W max 1 W max Sensor dimensions, mm 24 27.5 H Protection index of signal conditioner IP 64 Cable length between probe and signal conditioner 1 m 7. Bio Instruments S.R.L. 20 Padurii St., Chisinau MD-2002 REPUBLIC OF MOLDOVA Tel./Fax: 373-22-550026 info@phyto-sensor.com www.phyto-sensor.com. Title:
