Delta OHM HD2817T Series Manual
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Delta OHM HD2817T Series Manual

Delta OHM HD2817T Series Manual

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REV. 1.2
th
28
Nov. 2011
HD2817T...
ENGLISH
Our instruments' quality level is the results of the product continuous development. This can bring about
differences between the information written in this manual and the instrument that you have purchased. We
cannot entirely exclude errors in the manual, for which we apologize.
The data, figures and descriptions contained in this manual cannot be legally asserted. We reserve the right
to make changes and corrections without prior notice.
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  • Page 1 REV. 1.2 Nov. 2011 HD2817T... ENGLISH Our instruments’ quality level is the results of the product continuous development. This can bring about differences between the information written in this manual and the instrument that you have purchased. We cannot entirely exclude errors in the manual, for which we apologize. The data, figures and descriptions contained in this manual cannot be legally asserted.
  • Page 2 HD2817T… Transmitter, indicator, ON/OFF regulator, temperature and humidity datalogger The HD2817T... series instruments are transmitters, indicators, ON/OFF regulators with datalogger function. They measure temperature and humidity. They are fitted with an LCD backlit graphic display 128x64 pixel. The main characteristic of these instruments is the interchangeable probe. The user can virtually change the probe without interrupting the process.

  • Page 3: Instrument Versions And Available Probes

    1. Instrument versions and available probes Relay HD2817Tx-D0 None 2 working relays with exchange contact, HD2817Tx-DR 1 alarm relay with normally open contact. Type of probe HD2817T.xx Instrument with vertical probe S.TV or probe with cable S.TC. HD2817TO.xx Instrument with horizontal probe S.TO. Probes complete with SICRAM2 module for HD2817T.xx instruments S.TV Vertical probe L = 130 mm...

  • Page 4: Upon First Start Up

    2. Upon first start up Some notes about first start up are reported below. For the details see the various chapters in the manual. Before turning on, the probe should be connected to the instrument. Apply the correct voltage to the instrument. A wrong voltage can cause permanent damages to the instrument that are not covered by the warranty.

  • Page 5: Description Of The Display

    4. Description of the display The display constantly shows three measurements (lines 3, 4 and 5 in the figure) associated to the A1, A2 and A3 analog outputs, respectively: the physical quantity associated to the analog output A1 is shown on line (3), the physical quantity associated to the analog output A2 is shown on line (4), the physical quantity associated to the analog output A3 is shown on line (5).
  • Page 6 Use the   arrows to select “Range values” and confirm with ENTER. The “Scale low value” (lower limit of the physical quantity) item will blink: if necessary, change it using the   arrows and confirm with ENTER. You will get to the next item “Scale high value” (upper limit of the physical quantity): if necessary, change it using the ...

  • Page 7: Keyboard Description

    5. Keyboard description The HD2817T... models are fitted with an LCD display and an eight-key keyboard. Vertical ZOOM key In graphic mode, it enlarges or reduces the graph’s vertical scale. Horizontal ZOOM key In graphic mode, it enlarges or reduces the graph’s horizontal scale. Up arrow When used in the menu, it selects an item from a list or increases the selected parameter value.

  • Page 8: Terminal Board Description

    6. Terminal board description The terminal board is located in the lower part of the instrument, protected against dust and splashes by two doors: the first external, snap-locked, the second internal, fixed with two screws. Number Function Notes When making the order, you can select the power supply Power input 1 –...
  • Page 9 Number Function Notes Current and voltage The analog outputs can be associated, independently, to analog outputs any quantity measured by the instrument: relative humidity, absolute humidity, mixing ratio, dew point, wet bulb temperature, temperature. For the settings, please see the chapter “Current and voltage analog outputs”.

  • Page 10: Measurement Probe And Calibration Of The Relative Humidity Sensor

    7. Measurement probe and calibration of the relative humidity sensor The instrument only accepts SICRAM2 type temperature and relative humidity measurement probes. These probes are fitted with an electronic circuit that converts the signal and stores their calibration information. Thanks to their factory calibration, the probes are interchangeable, directly and immediately. The probes can be sent to our factory for calibration or repair.

  • Page 11: Installation And Connections

    8. Installation and connections The instrument is set to work indoors. For wall mounting, the instrument is fitted with a plate to be fixed to the wall. The instrument is attached through a cavity, near the arrow. As shown in the figure, 4 holes are needed at 90 mm horizontally and 110 mm vertically. The holes have a 4,5 mm diameter.

  • Page 12: Menu Description

    9. Menu description The MENU key allows accessing the set of items that regulate the instrument functioning. The menu is nest-structured: with main categories and submenus. To select a menu item, use the   arrows until you select the item to be modified: using ENTER you can access the selected item.
  • Page 13 The following diagram describes the instrument menu structure. MAIN MENU Information Logging Address Serial communication RS232, RS485, AUX COM port Relative humidity Absolute humidity Mixing ratio Reset parameters Program reset Dew point Reset instrument Temperature Wet bulb temperature Always de-energised Always energised LCD contrast Set value...
  • Page 14 Continues from previous page Continues from previous page Mode Output configuration Relay outputs Range limits Analog outputs 1-2-3 Analog output 1 Analog output 2 Relative humidity Analog output 3 Absolute humidity Type of output selection Mixing ratio Dew point Temperature Wet bulb temperature Lower limit Upper limit...
  • Page 15 B. LOGGING LOGGING LOG INTERVAL select LOG interval mm : ss now set at: 00 : 01 <UP> <DOWN> change <ESC> exit The LOGGING item sets the interval in seconds and minutes between two loggings. The available interval are: 1, 2, 5, 10, 20, 60 seconds, 2 and 4 minutes. The set interval influences the graphic mode (please see the description of the “VIEW MODE”...
  • Page 16 D. SW RESET (Program reset) SW RESET Reset parameters Reset instrument <UP> <DOWN> select <ENTER> confirm <ESC> exit It is formed by two sub-functions: D.1. “Reset parameters”: it performs a complete reset and restores the instrument to the original factory conditions, restoring all menu parameters. The date and time are not changed as they are managed by an independent circuit fitted with backup battery.
  • Page 17 The “TIME/DATE” item allows access to modify the instrument date and time. An internal circuit fitted with backup battery ensures the correct functioning of the clock even in case of mains power failure. Date and time are expressed as year/month/day, hours/minutes/seconds. Use the ...
  • Page 18 Relay RL1 (Working relay RL1) It is used to set the functioning parameters of the RL1 working relay. The following screen will appear: RELAY RL1 Mode: T Temp. Act Above: 100.0 °C Act Below: 25.0 °C Hysteresis: 1.0 °C On Error: Inactive <UP>...
  • Page 19 Act above (high threshold) When the measurement increases, it represents the threshold (set value) that shifts the relay from de-energised to energised when exceeded. The contact to terminals 9 and 10 goes from closed to open. The contact to terminals 8 and 9 goes from open to closed.
  • Page 20 To change the hysteresis width, press ENTER to select the set value line and use the   arrows to set the desired value. Press ENTER to go to the status line. Use the   arrows to select active in order to enable the hysteresis, inactive to disable it.
  • Page 21 RELAY RL2 MODE For. OFF T Temp. * RH Rel. Tw wetp. AH Abs. MR Mix. Td Dew For. ON <ESC> exit/cancel The current item is indicated by an asterisk (“RH Rel.” in the example): to change it, use the   arrows to select the new item and press ENTER. The asterisk will indicate your new selection.
  • Page 22 RELE RL2 ACTIVE BELOW set value: 20.0% status: active <UP> <DOWN> change <ESC> exit/cancel To change the trigger point value, press ENTER to select the set value line and use the   arrows to set the desired value. Press ENTER to go to the status line. Use the   arrows to select active in order to enable the trigger threshold, inactive to disable it.
  • Page 23 The current mode is indicated by an asterisk (“Active” in the example): to change it, use the   arrows to select the new item and press ENTER. The asterisk will indicate your new selection. Press ESC to return to the previous menu. Relay RL3 (Working relay RL3) It is used to set the functioning parameters of the RL3 working relay.
  • Page 24 Source It lists the alarm sources for the “Energized on error” and “Deenergized on error” functioning modes. RELAY RL3 SOURCE OF ALARM * Probe Error * Out 1 Error Out 2 Error * Out 3 Error <ESC> exit/cancel Probe error is triggered when a probe error occurs, e.g. when the measurement exceeds the functioning limits indicated in the technical information, when the probe becomes faulty or gets disconnected.
  • Page 25 G.2 Analog output configuration The three physical quantities associated to the A1, A2 and A3 analog outputs appear, respectively, in the first, second and third line of the display. The three dip-switches on the card above the terminals 14, 15 and 16, allow to select if the output is a current “Idc”...
  • Page 26 OUTPUT 1 - 2 - 3 Analog Output 1 Analog Output 2 Analog Output 3 Current/Voltage out <UP> <DOWN> select <ENTER> confirm <ESC> exit/cancel To configure your analog output parameters, e.g. the analog output 1, use the   arrows to select it and press ENTER.
  • Page 27 OUT 1 TEMPERATURE RANGE Scale low value: 20.0 °C Scale high value: 100.0 °C <ENTER> select <ESC> exit/cancel Scale low value represents the lower limit of the measured physical quantity, e.g. temperature, corresponding to the bottom scale value of the analog output (4mA, 0Vdc or 2Vdc according to the selected type of output).
  • Page 28 The display mode setting screen will open. “Numerical value” is the standard numeric • display. The other “Graph ...” items are reserved to graphic display. Select VIEW or ESC Numerical Values Graph RH Rel. Hum. Graph AH Abs. Hum. Graph SH Mix. Ratio Graph Td Dew Point * Graph T Temp.
  • Page 29 A cursor is added over the graph. Initially, it is located on the graph’s right edge. When time • goes by, the graph moves toward the left and the current data appear on the right vertical axis. The indications on the two lines define date, time and value of the measurement on the •...
  • Page 30 Probe Change Time out: 60 s Output: Hold state You can change probe During this time, replace the probe and wait for the timer to reach zero. The instrument will read the measurements supplied by the new probe. The analog outputs and relays are re-enabled.

  • Page 31: Current And Voltage Analog Outputs

    10. Current and voltage analog outputs The instruments have 3 analog outputs that can be configured as voltage or current outputs: 0…20mA, 4…20mA, 0…10Vdc or 2…10Vdc. Each analog output can be associated to one of the following physical quantities: Relative Humidity RH, •...

  • Page 32: Numerical Example

    For correct functioning, abide by the load resistance specifications concerning the analog outputs reported in the technical information. 10.1. Numerical example Let’s suppose you need to connect the HD2817T to a three-input indicator/regulator using the three 4...20mA current outputs for relative humidity, temperature and dew point, and that the ratio between the physical quantities input range and the 4...20mA output range is the one reported in the following table: Input...
  • Page 33 13. The value near Scale high value will blink: use the   arrows to set the value 100.0 and confirm with ENTER. 14. Press ESC twice; you will return to the menu “Output Analog 1-2-3”. 15. To set the A2 output, use the   arrows to select “Out Analog 2” and press ENTER. 16.

  • Page 34: Instruments Fitted With Relay Outputs

    11. Instruments fitted with relay outputs The HD2817T...-DR models are fitted with three relays with ON/OFF or control and alarm functions. The RL1 and RL2 relays have a free potential exchange contact, the RL3 alarm relay has a free potential normally open contact. The three relays can be configured independently.
  • Page 35 The trigger threshold Act above (high tripping point): when the measurement increases, it represents the threshold (ACTIVE ABOVE in the menu) that shifts the relay from de- energised to energised when exceeded. The contacts 5-6 and 8-9 will close, the contacts 6-7 and 9-10 will open.
  • Page 36 Functioning examples of the working relays RL1 and RL2. If the thresholds are enabled or not and depending from the set trigger level of each, you can have four different functioning modes. 1. Only the Act above (high) threshold is enabled. The relay is energised when the associate measurement exceeds threshold A, and de-energised when the measurement falls below threshold A –...
  • Page 37 3. Both thresholds are enabled, the Act above (high) threshold is higher than the Act below (low) threshold. The relay is energised when the associate measurement is outside the thresholds A and B, and de-energised when the measurement is within the thresholds A – H and B + H. 4.

  • Page 38: Numerical Example

    11.2. Numerical example Let’s suppose you need to set the relay RL1 as in figure 3 of the previous paragraph. The parameters to be set are summarized in the following table: Parameter Value Control physical quantity Temperature High threshold A = 100.0°C Low threshold B = 50.0°C Hysteresis...
  • Page 39 20mA, and the measured temperature exceeds 100°C or is lesser than 0°C, an error is generated. You can select multiple error sources: any of them can trigger the alarm. You can set a delay before generation of an alarm (Delay). During this time the relay does not switch and no alarm is signalled.

  • Page 40: The Logging Function

    12. The logging function The logging function is always on. The instrument can store 9000 samples. The memory is arranged in circular mode: once full, the most recent data will overwrite the oldest ones. There is no memory clearing command. Each sample stores date and time, temperature, relative humidity, absolute humidity, mixing ratio, dew point, and wet bulb temperature value of the three analog outputs and state of the three relays (if present).
  • Page 41 Setting the log interval and dump log Press the MENU key. Use the   arrows to select “Logging”, press ENTER. Use the   arrows to change the log interval, press ENTER to confirm. Press MENU to return to measurement mode. Dump LOG The logged data download is performed by connecting the instrument to a PC using the DeltaLog12 software: please see the chapter “Serial communication and instrument network”...

  • Page 42: Suspend" And "Off-Line" Functioning Modes

    13. “Suspend” and “Off-line” functioning modes The HD2817T... instruments have three different functioning modes: 1) Standard functioning, 2) Suspend mode functioning, 3) Off-line mode functioning. 1) Standard mode It is the normal functioning mode: continuous measurement, data logging, analog outputs, and active relays...

  • Page 43: Serial Communication And Instrument Network

    14. Serial communication and instrument network The instrument is fitted with a main multistandard serial communication port RS232C/RS485 and an auxiliary AUX COM serial port RS232C. The main port is connected to terminals 11, 12 and 13, the auxiliary AUX COM port has its own 3-pole connector near terminal 10.

  • Page 44: Connection Types

    14.2. Connection types The instrument can be connected directly to a PC through the RS232C serial port. The maximum distance between instrument and PC is 15 m. Connection PC / instrument with the RS232C serial communication protocol. To cover longer distances (up to 1200 m) you should use the RS485 serial output. This port allows creation of a network according to the diagram in the following figure.

  • Page 45: Description Of The Connection To A Pc

    To guarantee the best performance, a special termination should be used, as indicated in the dotted boxes in the figure. The cable shield should be connected at both ends of the line. If you need to connect over 32 instruments, insert a signal repeater between a group and the next one.

  • Page 46: Backup Battery Replacement

    15. Backup battery replacement The instrument is fitted with a backup battery that ensures the correct functioning of the clock even in case of mains power failure. The battery operates only when the instrument is not powered by the mains. There is no control on the battery’s charge status, therefore it should be replaced at least every four years.

  • Page 47: Instrument Signals And Faults

    16. Instrument signals and faults The table shows the instrument error indications. Display indication Explanation This message appears if the probe SICRAM2 is disconnected or a probe with SICRAM module has been inserted when not admissible PROB for that instrument. If the probe is disconnected, the “Prob comm lost”...

  • Page 48: Functioning Notes And Operating Security

    17. Functioning notes and operating security Authorized use Comply with the technical specifications outlined in the “Technical characteristics” chapter. Its use is authorized only in conformity with the instructions written in this manual. Any different use is considered improper. General instructions on security This instrument has been manufactured and tested according to safety regulation EN 61010-1 concerning electronic measurement instruments and was delivered ex factory in perfect security conditions.

  • Page 49: Appendix - The Communication Protocol

    18. Appendix – The communication protocol The communication parameters are common to all RS232 and RS485 ports and are: Baud rate: 9600 Baud, Parity: None, Data bits: Stop bits: Protocol: Xon-Xoff. The serial command “KBH” allows setting the Baud rate to 57600. This choice is not permanent, upon the next power on the Baud rate is restored to 9600.

  • Page 50: Print Command "K1

    18.2. Print command “K1” The “K1” command starts the continuous printing of instant data, that is, not averaged over the logging interval. You can set an automatic print interval using the WAAx command. (The index x defines the interval, as reported below.) x interval index Print interval in seconds Print single request...

  • Page 51: List Of Serial Commands

    18.3. List of serial commands Command Response (*) Description Setting the system data in the format “yymmddhhmmss”, hexadecimal. DA080102030410 & It should be preceded by the YU command to enable user calibration. &070812092A2B Reading the instrument clock date &0708120A2B02 Reading the factory calibration date Instrument status.
  • Page 52 Command Response (*) Description Write user code. It should be preceded by the YU T2yyyyyyyyyyyyyyyy & command to enable user calibration. Setting PRINT interval. “n” is a decimal number WAAn & 1…8 that represents the position of the interval in the list 1, 2, 5, 10, …, 240 seconds.
  • Page 53 (**) Table of status codes of RL1 and RL2 relays Meaning 0xFF Force energised 0x01 Active_below (low threshold) 0x02 Active_ above (high threshold) 0x03 Active_on_both (both are active) 0x00 Idle 0x04 Hysteresis Force energised on error (please 0x08 see the item ON ERROR in the menu) (***) Table of status codes of RL3 relay Meaning...

  • Page 54: Technical Information (@ 24Vdc And 20°C)

    19. Technical information (@ 24Vdc and 20°C) Inputs Temperature Sensor Pt100 Class 1/3 DIN Sensor working range -50 ... +200°C (-58 ...+392°F) Relative humidity %RH 0 ... 100%RH Temperature sensor working -50 ... +150°C range (Special configurations on request up to 180°C) Dew Point TD -50 ...
  • Page 55 Instrument 24Vdc / 24Vac 50…60Hz, 10% Power Versions 90 ... 240Vac 50…60Hz Average consumption Datalogger Storage capacity 9000 samples in 256 sessions max Type of memory Circular memory Temperature, relative humidity, absolute humidity, mixing ration, dew point, wet Logged parameters bulb temperature analog outputs 1, 2 and 3, status of relays 1, 2, 3 1, 2, 5, 10, 20, 60 seconds, 2 and 4...

  • Page 56: Accuracy Of The Calculated Physical Quantities

    19.1. Accuracy of the calculated physical quantities The accuracy of the calculated physical quantities depends on the calibration accuracy of relative humidity and temperature. Dew point TD accuracy (°C) expressed as a function of the relative humidity Relative humidity (%) 0.92 0.49 0.30...
  • Page 57 Absolute humidity accuracy (g/m Relative humidity (%) 0.015 0.020 0.025 0.030 0.08 0.10 0.11 0.13 0.14 0.15 0.28 0.33 0.40 0.44 0.50 0.55 1.36 1.56 1.74 1.92 2.13 2.19 9.37 10.2 11.3 12.3 13.2 13.5 Mixing ratio accuracy (g/kg) Relative humidity (%) 0.014 0.017 0.020...

  • Page 58: Sizes

    20. Sizes HD2817T.xx versions for vertical probe or with cable HD2817TO... version for horizontal probe...

  • Page 59: Order Codes

    21. Order codes HD2817T... Transmitter, indicator, ON/OFF regulator, temperature humidity datalogger. Fitted with three analog outputs: current output (0….20mA and 4….20mA), voltage output (0...10Vdc and 2...10Vdc). RS232/RS485 serial outputs for PC connection. It uses SICRAM2 interchangeable probes with microprocessor for calibration information recording. It displays the data on a backlit graphic display.
  • Page 60 Probes with SICRAM2 module, interchangeable, for temperature and humidity, horizontal S.TO S.TO1 Horizontal probe for instrument HD2817TO.xx. Rod length 135mm. S.TO2 Horizontal probe for instrument HD2817TO.xx. Rod length 335mm. Accessories RS27 Connection cable RS232 serial (null modem) with 9-pole female connector for PC and three-pole connector for AUX COM port.

  • Page 61: Table Of Contents

    Contents 1. Instrument versions and available probes ..............3 2. Upon first start up ....................4 3. Initial setting or date and time update ............... 4 4. Description of the display ..................5 5. Keyboard description ....................7 6. Terminal board description ..................8 7.
  • Page 63 CERTIFICATO DI CONFORMITÀ DEL COSTRUTTORE MANUFACTURER’S CERTIFICATE OF CONFORMITY rilasciato da issued by DELTA OHM SRL STRUMENTI DI MISURA DATA 2011/10/11 DATE Si certifica che gli strumenti sotto riportati hanno superato positivamente tutti i test di produzione e sono conformi alle specifiche, valide alla data del test, riportate nella documentazione tecnica.
  • Page 64 All DELTA OHM instruments are subject to accurate testing, and are guaranteed for 24 months from the date of purchase. DELTA OHM will repair or replace free of charge the parts that, within the warranty period, shall be deemed non efficient according to its own judgement. Complete replacement is excluded and no damage claims are accepted.

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