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INSTRUCTION MANUAL

CMP6-L, CMP10-L, CMP11-L

and CMP21-L Pyranometers

March 2015

Campbell Scientific (Canada) Corp.

Summary of Contents for CMP6-L

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Page 3: ...neglect accidents of nature or shipping damage This warranty is in lieu of all other warranties expressed or implied including warranties of merchantability or fitness for a particular purpose CSC is...

Page 4: ...8 6 3 CVF4 Ventilation Unit 8 7 Installation 9 7 1 Mounting to a Tripod or Tower 9 7 2 Wiring 12 7 2 1 CMP6 CMP10 CMP11 and CMP21 Thermopile Schematic 13 7 2 2 CMP6 and CMP11 Wiring 13 7 2 3 CMP21 Wi...

Page 5: ...a pyranometer mounted at an angle for the Northern Hemisphere 4 Figure 4 4 Pyranometer mounted at an anlge for the Southern Hemispher 4 Figure 4 5 SCWin Short Cut Program Generator 5 Figure 6 1 Dimen...

Page 6: ...l Connections to Campbell Scientific Dataloggers 14 TABLE 7 4 CMP21 Single Ended Connections to Campbell Scientific Dataloggers 15 TABLE 7 5 Multipliers Required for Flux Density and Total Fluxes 16 T...

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Page 8: ...ents x Section 3 Initial Inspection x Section 4 Quick Start More details are available in the remaining sections 2 Cautionary Statements x CMP series pyranometers are rugged but they should be handled...

Page 9: ...izontally for global horizontal measurements However the pyranometer can be installed at any angle for POA measurements and in the inverted position for reflected measurements In all cases it will mea...

Page 10: ...e Section 7 1 Mounting to a Tripod Tower for more information Figure 4 1 Pyranometer installation Figure 4 2 Pyranometer mounted horizontally for the Northern Hemisphere left and Southern Hemisphere r...

Page 11: ...6 L CMP10 L CMP11 L and CMP21 L Pyranometers 4 Figure 4 3 Two views of a pyranometer mounted at an angle for the Northern Hemisphere Figure 4 4 Pyranometer mounted at an anlge for the Southern Hemisph...

Page 12: ...MP10 or CMP11 is to use Campbell Scientific s SCWin Short Cut Program Generator see Figure 4 5 Wire the pyranometer according to the wiring diagram generated by Short Cut The CMP21 is not included in...

Page 13: ...o a prewired enclosure cable termination option PW x Connector that attaches to a CWS900 Wireless Sensor Interface cable termination option CWS The CWS900 enables the pyranometer to be used in a wirel...

Page 14: ...Non linearity 0 to 1000 W m 2 1 0 2 Directional error up to 80 with 1000 W m 2 beam 20 W m 2 10 W m 2 Tilt error at 1000 W m 2 1 0 2 Level accuracy 0 1 Operating temperature 40 to 80 C Temperature dep...

Page 15: ...wer supply 12 Vdc 1 3 A with 10 W Heater Operating temperature range 40 to 70 C Ventilation power 5 W continuously Heating power 5 W and 10 W Heater induced offset 1 W m 2 with CMP11 Pyranometer Weigh...

Page 16: ...ion 7 1 Mounting to a Tripod or Tower Tools required for installation on a tripod or tower Small and medium Phillips screwdrivers 5 16 1 2 open end wrenches 5 32 Allen wrench Tape measure UV resistant...

Page 17: ...to any angle from horizontal to vertical If mounting the pyranometer at an angle ensure that the crossarm is leveled horizontally before placing the bracket at its proper angle Angle positions are inc...

Page 18: ...unting stand to the crossarm 2 Loosely mount the pyranometer on the mounting stand Do not fully tighten the two mounting screws 3 Turn the leveling screws as required to bring the bubble of the level...

Page 19: ...ctors and a shield The additional conductors on the CMP21 s cable are for connecting its internal thermistor A schematic for the CMP6 CMP10 CMP11 and the thermopile of the CMP21 is provided in Section...

Page 20: ...se rejection than a single ended measurement Connections to Campbell Scientific dataloggers for a differential measurement are given in TABLE 7 1 A user supplied jumper wire should be connected betwee...

Page 21: ...voltage excitation channel are used to measure the CMP21 s internal thermistor Connections to Campbell Scientific dataloggers for a differential measurement are given in TABLE 7 3able 7 3 A user suppl...

Page 22: ...eported as an average flux density W m 2 or daily total flux density MJ m 2 The appropriate multipliers are listed in TABLE 7 5 Programming examples are given for both average and daily total solar ra...

Page 23: ...low or 60 Hz rejection integration gives a more noise free reading The 250 s CRBasic or a fast Edlog integration takes less power and allows for faster throughput 7 3 1 2 Multiplier The multiplier con...

Page 24: ...s Example Assume that daily total flux is desired and that the Edlog datalogger scan rate is 1 second With a multiplier that converts the readings to units of kJ m 2 and an average irradiance of 0 5 k...

Page 25: ...es a newer datalogger operating system 7 3 3 Example Programs 7 3 3 1 CR1000 Example Program for Measuring a CMP6 Although this example is for the CR1000 other CRBasic dataloggers are programmed simil...

Page 26: ...d for the example program Every 10 minutes the program outputs the average and standard deviation of the flux W m 2 measurements Wiring for this example is given in TABLE 7 7able 7 7 TABLE 7 7 CR1000...

Page 27: ...tion of the flux W m 2 measurements and temperature measurements Wiring for this example is given in TABLE 7 8able 7 8 TABLE 7 8 CR1000 Wiring for CMP21 Example Program Wire Color Description CR1000 J...

Page 28: ...T_K CMP21_T_C 273 15 CallTable TenMin NextScan EndProg 7 3 3 4 CR10X Example Program for Measuring a CMP6 The following program uses a CR10X to measure a CMP6 every 10 seconds and convert the mV outpu...

Page 29: ...2 2 4 3 0 F 4 30 Then Do 3 Z F x 10 n P30 1 0 F 2 0 n Exponent of 10 3 3 Z Loc Solar_Wm2 4 End P95 Calculate units in MJ where MJ m t 0 000001 m Solar_Wm2 from above and t 10 scan interval 5 Z X F P37...

Page 30: ...eter to ensure that x Dome is free of dirt condensation and ice see Section 8 1 Cleaning Domes x Desiccant granules are orange and opaque see Section 8 2 Changing the Desiccant x Mounting is secure x...

Page 31: ...y after several months Refill packs of desiccant are shipped with the pyranometer and can be purchased from Campbell Scientific The drying cartridge uses the content of one refill pack Figure 8 2 show...

Page 32: ...the measurement instruction 2 Verify that the range code is correct for the datalogger type 3 Measure the impedance across the red and blue sensor wires This should be around 100 ohms plus the cable r...

Page 33: ...CMP6 L CMP10 L CMP11 L and CMP21 L Pyranometers 26...

Page 34: ...The CVF3 10 W heater is used to melt snow and ice With improvements in design and efficiency all of these preventative measures are performed by the CVF4 5 5 W heater These power requirements are lar...

Page 35: ...air flow A 3 Installation The CVF3 or CVF4 unit includes the heater ventilator unit white cover cable and mounting hardware Tools required for mounting to a tripod or tower are x Small and medium Phil...

Page 36: ...e Figure A 4 3 Use the counter sink screws nylon rings and nuts to secure the upper plate of the CVF3 with the lower portion of the unit see Figure A 4 A 4 Pyranometer mounted to the CVF3 4 Loosely mo...

Page 37: ...ghten the mounting screws to secure the assembly in its final position Check that the pyranometer is still correctly leveled and adjust as necessary 7 Use the cover s screws to fasten the white cover...

Page 38: ...mount the CVF4 A 7 Mounted CVF4 2 Mount the radiometer in the CVF4 and level with its own levelling feet The radiometer mounting screws and shoulder washers are fitted not secured If the CVF4 is moun...

Page 39: ...CVF3 CVF4 Heater Ventilator A 6 A 8 L31153 Mounted CVF4...

Page 40: ...te 5 W Heater Power 12V on Power Supply Clear Shield on Power Supply Yellow 5 V Tacho Output Control port on datalogger TABLE A 2 CVF4 Wiring Wire Color Description Connection Red Ventilator Power 12V...

Page 41: ...e cover make sure it is placed correctly by checking that the opening around the radiometer is evenly spaced 3 Inspect the fan inlet by unclipping the cover For optimal air flow make sure the diagonal...

Page 42: ...A 1...

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