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DeltaOHM HD2016 Скачать руководство пользователя страница 9

HD2016

- 9 -

V1.4

3.4

SDI-12

CONNECTION

More SDI-12 sensors can be connected in parallel. The distance between a sensor and the ac-
quisition system should not exceed 60 m. Before connecting the instrument to an SDI-12 net-
work containing other sensors, set the address by using the proper SDI-12 command.

Fig. 3.4.1: SDI-12 connection

3.5

C

ONTACT OUTPUT

The voltage-free contact output simulates the pulse output of a tipping bucket rain gauge. The

contact is isolated and is normally open. At 1 minute intervals, the output generates a pulse
train (T

ON

≈

60 ms, T

OFF

≈

60 ms) as a function of the rainfall measured in the previous min-

ute. Each pulse corresponds to an amount of rainfall configurable from 0.001 to 1 mm/pulse

(default=0.2) by using the command

CP0

of the ASCII proprietary protocol.

Fig. 3.5.1 – contact output connection

Power supply

CP18… cable

Other SDI-12

sensor

Data logger

input

Other SDI-12

sensor

Power supply

CP18… cable

contact 1

st

pole

Data logger

input

contact 2

nd

pole

«
...
7
8
9
10
11
...
»

Содержание HD2016

Страница 1: ...Operating manual Weighing rain gauge HD2016 www deltaohm com Companies Brands of GHM English Keep for future reference ...

Страница 2: ... CONNECTION 8 3 4 SDI 12 CONNECTION 9 3 5 CONTACT OUTPUT 9 3 6 UNLOCKING THE LOAD CELL 10 3 7 FIXING THE RAIN GAUGE 10 4 ASCII PROPRIETARY PROTOCOL 12 5 MODBUS RTU PROTOCOL 17 6 SDI 12 PROTOCOL 19 7 NOTES ON WEIGHT MEASUREMENTS 23 8 STATUS REGISTER 23 9 MAINTENANCE 24 10 TECHNICAL CHARACTERISTICS 27 11 INSTRUMENT STORAGE 27 12 SAFETY INSTRUCTIONS 28 13 ORDERING CODES 29 ...

Страница 3: ...on of the rain gauge So as to ensure accurate measurement even with low temperature climatic conditions a ver sion with heating which is automatically activated below 4 C has been developed HD2016R so that snow deposits and ice formations are prevented If the discharge of the water collected takes place during a rainfall a retention valve located at the top of rain gauge temporarily holds the curr...

Страница 4: ...HD2016 4 V1 4 2 DESCRIPTION ...

Страница 5: ...e support of the rain gauge raised above ground 6 Place for the support rod 7 Discharge of the rainfall collected 8 Cover of the electronic board housing To access the electronic board loosen the 7 screws that secure the cover 9 Terminal for protective earth connection 10 Overflow drain 11 Optional cable for the connection of the measuring circuit power supply and signals 12 Cable gland for the he...

Страница 6: ...th a flange so that it can be fixed to the floor For the measurement to be correct it is important that the rain gauge is placed perfectly lev elled the base of the rain gauge is fitted with a bubble level 3 1 ELECTRICAL CONNECTIONS The measuring circuit power supply and the outputs RS485 SDI 12 or contact are connected via the male 8 pole M12 connector of the instrument point 3 on page 4 Use a ca...

Страница 7: ...lection of the type of digital output is done by means of the switch SW1 on the electronic board Set the switch toward the RS485 or SDI 12 indication depending on the desired output The switch is set at the factory toward the RS485 indication unless otherwise requested The switch S1 of the DIP switch on the electronic board allows selecting the communication protocol of the digital output at the i...

Страница 8: ... termination resistor by using the command COt of the ASCII proprietary protocol The RS485 output of the rain gauge is not isolated from the power supply Fig 3 3 1 RS485 connection The maximum number of devices that can be connected to the RS485 line Bus depends on the load characteristics of the devices to be connected The RS485 standard requires that the total load does not exceed 32 unit loads ...

Страница 9: ...s the pulse output of a tipping bucket rain gauge The contact is isolated and is normally open At 1 minute intervals the output generates a pulse train TON 60 ms TOFF 60 ms as a function of the rainfall measured in the previous min ute Each pulse corresponds to an amount of rainfall configurable from 0 001 to 1 mm pulse default 0 2 by using the command CP0 of the ASCII proprietary protocol Fig 3 5...

Страница 10: ... outward fig 3 6 1 Replace the cylindrical cover and tighten the 3 fixing nuts Fig 3 6 1 unlocking the load cell 3 7 FIXING THE RAIN GAUGE For the measurement to be correct it is important that the rain gauge is placed perfectly lev elled the base of the rain gauge is fitted with a bubble level Fig 3 7 1 location of the bubble level For ground installation secure the three support feet to the base...

Страница 11: ...6 33K kit to the base of the instrument and screw the support rod to the flange the rod may end with a flange HD2003 78 to be fixed to the floor Fig 3 7 3 rain gauge installation raised above ground Bird dissuader HD2016 33K flange support rod Flat base Floor Bird dissuader Feet Adjustement screws for levelling ...

Страница 12: ...hysical inter face used is activated by default In this case the ASCII proprietary protocol can be activated without turning the rain gauge off and without changing the setting of the DIP switch S1 by the following procedure 1 In the PC start a serial communication program many free programs suitable for the pur pose can be found on the Internet then set the COM port number to which the instrument...

Страница 13: ...480 from the end of the rainfall if the reservoir filling percentage is greater than the set threshold RTE address percentage Reads the reservoir filling percentage that enables the discharge default 10 300 cc CTE nn address Activates the discharge after the delay time set if the reservoir filling percentage is greater than nn 1 nn 99 Note the discharge takes place normally at the end of a rainfal...

Страница 14: ...activation state of the heater state On heater has been switched on state Off heater has been switched off Resolution of contact output Command Reply Description RP0 address resolution Reads the resolution in mm pulse of the contact output default 0 200 mm pulse CP0 n ddd address Sets the resolution of the contact output to the value n ddd mm pulse max 1 mm pulse Counters reset Command Reply Descr...

Страница 15: ...d value Single print of the measure of index n n 0 Status register content in hexadecimal n 2 Partial rainfall in µm from the last reading command n 4 Total rainfall in µm n 6 Partial rainfall in µm from the last reset command n 8 Average rainfall rate in µm min calculated in the last minute n 10 Average rainfall rate in µm h calculated in the last hour n 12 Rain gauge internal temperature in C n ...

Страница 16: ...in µm h calculated in the last hour campo 9 Reservoir status Evap if in evaporation Rain if in precipitation followed by va lid data or invalid data campo 10 Indicates how long the status reported in the previous field has been active campi 11 15 Confidential information campo 16 Internal temperature in C For details on weight measurements please see the paragraph Notes on weight measurements R0 S...

Страница 17: ...n µm min calculated in the last minute 16 bit integer 10 11 Average rainfall rate in µm h calculated in the last hour 16 bit integer 12 13 Rain gauge internal temperature in C 16 bit integer 14 15 Rainfall total weight Pmg in mg 16 bit integer 16 17 Rainfall total weight in mg considering the evaporation Wmg 16 bit integer 18 19 Weight in mg of the current reservoir content Tmg 16 bit integer 20 2...

Страница 18: ...ansmission mode 0 8N1 1 8N2 2 8E1 default 3 8E2 4 8O1 n 5 8O2 N no parity E even parity O odd parity 16 bit integer 103 Receiving mode after the Modbus transmission Tx 0 Violates the protocol and goes immediately in reception mode after Tx 1 Respects the protocol and waits for 3 5 characters after Tx default 16 bit integer In order to check whether the last writing operation has been completed suc...

Страница 19: ...e available SDI 12 commands For consistency with the documenta tion of the SDI 12 standard the instrument address is indicated in the table with the letter a The rain gauge leaves the factory with address preset to 0 The address can be changed by us ing the proper SDI 12 command reported in the table SDI 12 commands Command Instrument reply Description a a CR LF Verifies the presence of the in str...

Страница 20: ...ute IH average rainfall rate in mm h calculated in the last hour RT total rainfall in mm Reads total rainfall mm rainfall rate Rainfall mm rainfall rate and temperature C aM1 aC1 atttn CR LF with ttt number of seconds necessary for the instrument to make the measure available 3 characters n number of detected variables 1 character for aM1 2 characters for aC1 Note ttt 000 means that datum is immed...

Страница 21: ...l rainfall in inches from the last reset com mand IM average rainfall rate in inches min calculated in the last minute T rain gauge internal temperature in F Reads partial rainfall inches rainfall rate temperature F Rainfall weight aM3 aC3 atttn CR LF with ttt number of seconds necessary for the instrument to make the measure available 3 characters n number of detected variables 1 character for aM...

Страница 22: ...erature in F Reads total rainfall inches partial rainfall inches rainfall rate temperature F aR3 a SR Pmg Wmg Tmg CR LF with SR content of the status register in hexadecimal Pmg rainfall total weight in mg Wmg rainfall total weight in mg considering the eva poration Tmg weight in mg of the current reservoir content Reads the rainfall weight In addition to the above mentioned commands the sensor al...

Страница 23: ...g follows the change of Tmg weight of the current content of the reservoir but without taking into account that the water is discharged when the reservoir is full The Wmg value is equal to the value of Pmg minus the weight of all the water evaporated from when the rain gauge is in operation The value is reset when Pmg is reset 8 STATUS REGISTER The 16 bit status register gives the following inform...

Страница 24: ...lowing of water To accurately clean the filter remove it from the rain gauge and wash it with the help of a brush Fig 9 1 upper filter To clean the inside of the rain gauge loosen the three nuts at the base of the cylindrical cover and remove the cylindrical cover by pulling it upwards fig 9 2 Fig 9 2 removing the cylindrical cover Remove the cover of the rainfall collecting reservoir fig 9 3 and ...

Страница 25: ... to the PC 2 Enable the ASCII proprietary protocol see chapter 4 3 Close the upper retention valve by using the serial command CVH 4 Open the discharge valve by using the serial command CVL 5 Pour some water in the rain gauge and check that water does not flow out from the dis charge pipe of the rain gauge 6 Open the upper retention valve by using the serial command CVH and check that the water fl...

Страница 26: ...n it reaches the maximum value Before the counter reaches the maximum value reset it in one of the following ways 1 By sending the command CLR of the ASCII proprietary protocol 2 By writing A55Ah in the Holding Register with address 9 of the Modbus RTU protocol 3 By sending the extended command aXSCLR a is the instrument address of the SDI 12 pro tocol ...

Страница 27: ...1 mm min Temperature 0 1 C Accuracy Rainfall 0 2 mm wind speed 30 m s Temperature 1 C Maximum rainfall rate 1000 mm h Operating temperature 4 60 C without heating 20 60 C with heating only HD2016R Heater intervention temperature 4 C only HD2016R Capacity The automatic discharge of the 3000 cc reservoir allows seamless rainfall measurement Protection degree IP 64 Collector area 400 cm2 Minimum sect...

Страница 28: ...n and operating safety can be ensured only if all standard safe ty measures as well as the specific measures described in this manual are followed The instrument proper operation and operating safety can be ensured only in the climatic con ditions specified in this manual Do not use the instruments in places where there are Corrosive or flammable gases Direct vibrations or shocks to the instrument...

Страница 29: ...ded CP 18 5 12 pole cable Length 5 m 8 pole M12 connector on one end open wires on the other side CP 18 10 12 pole cable Length 10 m 8 pole M12 connector on one end open wires on the other side HD2013 18 Bird dissuader HD2016 33K Kit of accessories for the installation of the rain gauge raised 500 mm above ground HD2016 33K 1 Kit of accessories for the installation of the rain gauge raised 1 m abo...

Страница 30: ...HD2016 30 V1 4 NOTES ...

Страница 31: ......

Страница 32: ... third parties is excluded from the guarantee The instrument shall be returned FREE OF SHIPMENT CHARGES to your dealer The jurisdiction of Padua applies in any dispute The electrical and electronic equipment marked with this symbol cannot be disposed of in public landfills According to the Directive 2011 65 EU the european users of electrical and electronic equipment can return it to the dealer or...

Страница 33: ...he result of the constant development of the product This may produce some differences between the information written in this manual and the instrument you have purchased We cannot completely exclude the possibility of errors in the manual for which we apologize The data images and descriptions included in this manual cannot be legally asserted We reserve the right to make changes and corrections...

Страница 34: ...GHM GROUP Delta OHM Delta Ohm S r l a socio unico Via Marconi 5 35030 Caselle di Selvazzano Padova ITALY Phone 39 049 8977150 Fax 39 049 635596 www deltaohm com info deltaohm com V1 4 08 01 2019 ...

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