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Table of Contents
Related Manuals for Lumel P18
Summary of Contents for Lumel P18
- Page 1 TEMPERATURE AND HUMIDITY TRANSDUCER TYPE USER’S MANUAL...
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Page 3: Table Of Contents
3. INSTALLATION ................5 3.1. Assembly ....................5 3.2. Electrical Connections ................7 4. SERVICING ................9 4.1. Functions of the P18 Transducer ............10 4.2. Individual Characteristic of Analog Outputs ........11 4.3. RS-485 Interface ................13 4.4. Standard Parameters ................18 5. ACCESSORIES ................ 19 6. -
Page 5: Application
3. INSTALLATION 3.1. Assembly The P18 transducer is designed to be mounted on a wall by means of a screw connection or glue without the loss of IP65 tightness . The transducer housing is made of a self-extinguishing plastics. - Page 6 Fig.1. Overall Dimensions of the P18 Transducer Fig.2. Lay-out of Assembly Holes of the P18 Transducer...
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Page 7: Electrical Connections
3.2. Electrical Connections The P18 transducer has 8 connecting terminals to which there is access after removing the cover of the transducer housing. For electrical connections, one must use a round wire with external dia- meter from 3.5 mm up to 6 mm. - Page 8 Table 1 Way of Electrical Signal Connection Transducer without analog outputs Transducer with current outputs Transducer with voltage outputs One must use a spiral for the interface line connection. In case of the transducer work in an environment with high interference, one must apply shielded wires.
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Page 9: Servicing
- individual characteristics of analog outputs (for executions with analog outputs). There is the possibility to connect the transducer through another trans- mission media, like: ETHERNET, USB, using LUMEL S.A.’s converters. The transducer is equipped of one two-colour signalling diode. The diode pulsation means: - pulsing in green colour –... -
Page 10: Individual Characteristic Of Analog Outputs
7.3313 229.1 4.2. Individual Characteristic of Analog Outputs The P18 transducer in execution with analog outputs enables the conversion of measured quantities into an output signal on the strength of individual linear characteristic of analog outputs. On the base of... - Page 11 given coordinates of two points by the user, the transducer determines (from the system of equations) coeffi cients a and b of the individual characteristic. Y1Out = a X1In + b Y2Out = a X2In + b where: X1 In and X2 In - measured value Y1 Out i Y2 Out - expected value on the output.
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Page 12: Rs-485 Interface
4.3.1. Description of the MODBUS Protocol Implementation The implemented protocol is in compliance with the PI-MBUS-300 Rev G Modicon Company specification. Following functions of the MODBUS have been implemented in P18 transducers: Functions of the MODBUS Protocol Implemented in P18 Transducers... - Page 13 Note: Each transducer connected to the communication network must have: unique address, different from other devices connected to the network, the same baud rate and information unit type. 4.3.2. Register Map of the P18 Transducer Table 5. Address Value type...
- Page 14 4.3.3. Registers for Write and Readout Configuration Registers of the P18 Transducer Table 6. Address Name Range Description 4000 Identifier 0xAA Identifier of the P18 transducer 4001 Address 1...247 Device address 4002 Baud rate 0...4 Baud rate of the RS-485 interface...
- Page 15 4010 Y2 temperature 0...2000 Output value Y2 of temperature: c. current output [mA x 100] d. voltage output [Vx100] 4011 X1 humidity 0...10000 Measured value X1 of humidity [% x 100] 4012 Y1 humidity 0...2000 Output value Y1 of humidity: e.
- Page 16 In case, when the introduced value exceeds the upper or the lower change range given in the table above, the transducer does not carry out the parameter write. 4.3.4. Registers only for Readout Register of Measured Values of the P18 Transducers Table 7. Address Address...
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Page 17: Standard Parameters
4.4. Standard Parameters Standard Parameters of the P18 Transducer Table 8 Standard value Parameter Version Version with Version with description without analog the current output the voltage output outputs Address Baud rate 9600 9600 9600 Mode RTU 8N1 RTU 8N1... - Page 18 Fig. 5. Placement of the Jumper Setting Temporary Communication Parameters.
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Page 19: Accessories
5. ACCESSORIES As a standard, the P18 transducer is equipped with a metallic shield of the sensor, destined only for indoors applications, for outdoors or indoors applications exposed to the possibility of water vapour condensation, it is recommended to use additional shields of the sensor (interchangeable), depending of the transducer working conditions. -
Page 20: Technical Data
6. TECHNICAL DATA Basic parameters: - range of relative humidity measurement (RH) 0...100%, without condensation - basic error of humidity conversion ± 2% of the range for RH=10...90% ± 3% for the remaining range - hysteresis of the humidity measurement ±... - Page 21 Rated operating conditions: - supply 9...24 V a.c./d.c. - consumption < 0.5 VA - ambient temperature - 20...23...85 - relative air humidity < 95% - rate of air flow 0.5 m/sec - pre-heating time 15 minutes - protection degree ensured by the housing IP 65 - fixing...
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Page 22: Ordering Codes
7. ORDERING CODES Ordering Codes of P18 Transducer Versions Table 10 P18 - X XX X Analog outputs: without analog outputs current output 4...20 mA voltage output 0...10 V Version: standard non standard se ng custom-made* Acceptance tests: without extra quality requirements with an extra quality inspec on cer fi... -
Page 23: Maintenance And Guarantee
8. MAINTENANCE AND GUARANTEE The P18 transducer does not require any periodical maintenance. In case of some incorrect operations: 1. In the period of 12 months from the date of purchase: One should take the transducer down from the installation and return it to the Manufacturer Quality Control Dept.
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