APAR AR252 User Instruction

Humidity and temperature transducer

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APAR - Sales Office
05-090 Raszyn, ul. Gałczyńskiego 6
Tel. (+48) 22-101-27-31, 22-853-48-56, 22-853-49-30
fax (+48) 22-101-27-33
Internet: www.apar.pl, email:
automatyka@apar.pl
USER INSTRUCTION
version
version
without a display
with an LCD display
HUMIDITY AND TEMPERATURE
TRANSDUCER
AR252
Version 3.0.0
2016.10.26

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Summary of Contents for APAR AR252

  • Page 1 APAR - Sales Office 05-090 Raszyn, ul. Gałczyńskiego 6 Tel. (+48) 22-101-27-31, 22-853-48-56, 22-853-49-30 fax (+48) 22-101-27-33 Internet: www.apar.pl, email: automatyka@apar.pl USER INSTRUCTION version version without a display with an LCD display HUMIDITY AND TEMPERATURE TRANSDUCER AR252 Version 3.0.0 2016.10.26...
  • Page 2: Table Of Contents

    Thank you for choosing our product. This instruction is intended to facilitate correct operation, safe use, and taking full advantage of the device’s functionalities. Before you start the device, please read and understand this instruction. In the event of any additional questions, please contact our technical adviser. CONTENTS 1.
  • Page 3: Safety Principles

    1. SAFETY PRINCIPLES before you start to use the device, become familiar with the present instructions; in order to avoid electrocution or damage to the device, its mechanical and electrical installation must be performed by qualified workers; before switching on the power supply, make sure that all cables and wires are properly connected; before making any modifications to the wire and cable connections, switch off the voltage supplied to the device;...
  • Page 4: Contents Of The Set

    NOTE: - before you start working with the device, become familiar with this user instruction and make sure the electrical and mechanical systems have been made properly and the correct parameters have been set; - if the parameters of the transducer have been set using the AR956 programmer, the ARsoft-CFG software must be configured properly.
  • Page 5: Enclosure Dimensions And Installation Data

    An external probe with a wire b.2.) A probe on a stainless steel pipe b.3) An external probe AR252/2 AR252/L150 or AR252/L250 in an enclosure with a wire AR252/3 b.3) A probe integrated with the enclosure in the back...
  • Page 6: Description Of Terminal Strips And Electrical Connections

    c) installation of cabling − cut off the power supply before making any changes to the cabling; − remove the 4 screws in the front cover and take it off the device; − in version with an LCD, carefully take out display from bolt connectors (perpendicularly to the front surface); −...
  • Page 7: Functions Of The Buttons On The Control Panel

    Fig. 7. Location of the terminal strip and the programming socket PR 8. FUNCTIONS OF THE BUTTONS ON THE CONTROL PANEL Fig. 8. Description of the control panel indicator of the unit of the measured value (%RH or °C) a 7-segment LCD display programming buttons a) button functions in the measurement display mode Button...
  • Page 8: Setting Of The Configuration Parameters

    9. SETTING OF THE CONFIGURATION PARAMETERS All the configuration parameters of the device are stored in the non-volatile internal memory. There are two parameter configuration methods: 1. Using the keypad on the control panel: − from the mode where the input measurements are displayed in the configuration menu (press the [UP] and [DOWN] buttons simultaneously for more than 1 second) until the ConF message appears −...
  • Page 9 Table 9.1. Configuration parameters for the version with the 4-20 mA current output or the 0-10 V voltage output Default Parameter Range of variability of the parameter and description settings resolution 1 [%RH, °C, g/m 0: dot display indication resolution (1) resolution 0.1 [%RH, °C, g/m reHu measured relative humidity [%RH]...
  • Page 10: Messages And Error Signaling

    Table 9.2. Configuration parameters for the RS485 version Default Parameter Range of variability of the parameter and description settings resolution 1 [%RH, °C, g/m 0: dot position of the point/resolution(1) resolution 0.1 [%RH, °C, g/m reHu measured relative humidity [%RH] temP measured sensor temperature [°C] reHu...
  • Page 11: Connecting The Controller To A Computer And Available Software

    = 2,400 bit/s, MODBUS address = 1. The following application is available (on a CD supplied with the AR956 programmer or to be downloaded from the Internet at www.apar.pl, “Download” section, for operating systems Windows Vista/7/8/10): Name Software description...
  • Page 12: Modbus-Rtu Serial Transmission Protocol (Slave)

    13. MODBUS–RTU SERIAL TRANSMISSION PROTOCOL (SLAVE) Character format : 8 bits, 1 stop bit, no parity bit Available functions : READ - 3 or 4, WRITE - 6 Table 13.1. Claim frame format for the READ function (frame length - 8 bytes): number of read registers: address of function...
  • Page 13 Table 13.6. Maps of registers for the MODBUS-RTU protocol for the transducer version with the RS485 Register Value Description of register and access type address (HEX or DEC) (R- read only register, R/W - read and write register) HEX (DEC) 0x00 - 0x05 not used or reserved (for compatibility with the older version) 0x06 (6)
  • Page 14: User's Notes

    14. USER'S NOTES...
  • Page 15: Calibration Certificate

    CALIBRATION CERTIFICATE...

This manual is also suitable for:

Ar252uAr252i

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