Table of Contents
Advertisement
Quick Links
Download this manual
See also:
User Manual
Advertisement
Table of Contents
Related Manuals for Vaisala Drycap DMT345
Summary of Contents for Vaisala Drycap DMT345
- Page 1 USER'S GUIDE ® Vaisala DRYCAP Dewpoint Transmitters DMT345 and DMT346 M210762EN-D...
- Page 2 The contents are subject to change without prior notice. Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user. All legally binding commitments and agreements are included exclusively in the applicable supply contract or Conditions of...
-
Page 3: Table Of Contents
DMT345 Probe Mounting ............32 Installation with Flange............32 DMT346 Probe and Cooling Set Mounting......33 Description of the Cooling Set..........34 Parts of the Cooling Set ..........35 General Probe and Cooling Set Mounting Instructions..36 VAISALA ________________________________________________________________________ 3... - Page 4 USER'S GUIDE____________________________________________________________________ Probe and Cooling Set Mounting with Process Shut Down ................38 Probe and Cooling Set Mounting with Process Running38 Removing the Transmitter for Maintenance ....38 Wiring..................39 Cable Bushings ..............39 Cable Grounding ..............40 Transmitter Housing Grounding ..........41 Signal and Power Supply Wiring .........41 Connections to a 24 VAC Power Supply......43 Optional Modules ..............45 Power Supply Module ............45...
-
Page 5: Vaisala
DSEL................102 View Recorded Data ............103 DIR ................103 PLAY ................104 Deleting Recorded Files............ 105 UNDELETE ..............106 Analog Output Settings ............106 Changing Output Mode and Range ........106 Analog Output Quantities ..........108 VAISALA ________________________________________________________________________ 5... - Page 6 Periodic Maintenance............127 Cleaning ................127 Changing the Cooling Set Filter ........127 Error States ...............127 Technical Support ..............129 Return Instructions ..............129 Vaisala Service Centers ............130 CHAPTER 6 CALIBRATION AND ADJUSTMENT............131 Calibration ................131 User Calibration and Adjustment........131 Opening and Closing Adjustment Mode......132 6 ___________________________________________________________________ M210762EN-D...
- Page 7 RS-485 Module ............147 LAN Interface Module ..........147 WLAN Interface Module..........147 Data Logger Module ............ 147 Options and Accessories ............ 148 Dimensions (mm/inch)............149 APPENDIX A EXAMPLE INSTALLATION OF DMT346 ..........151 APPENDIX B CALCULATION FORMULAS ..............153 VAISALA ________________________________________________________________________ 7...
- Page 8 USER'S GUIDE____________________________________________________________________ This page intentionally left blank. 8 ___________________________________________________________________ M210762EN-D...
- Page 9 Network Interface Menu ............76 Figure 50 IP Configuration Menu.............. 77 Figure 51 Wireless LAN Settings.............. 79 Figure 52 Entering Network SSID ............80 Figure 53 Selecting the Wireless Network Type ........80 Figure 54 Web Configuration Interface for WLAN........82 VAISALA ________________________________________________________________________ 9...
- Page 10 USER'S GUIDE____________________________________________________________________ Figure 55 Opening a Serial Connection............83 Figure 56 Opening a Telnet Connection...........84 Figure 57 Pressure Set Buttons on Motherboard ........93 Figure 58 Following Device Information on the Display ......99 Figure 59 Current/Voltage Switches of Output Modules ......107 Figure 60 Measurement-Based Relay Output Modes ......112 Figure 61 FAULT/ONLINE STATUS Relay Output Modes.....115...
- Page 11 Output Quantities and Their Abbreviations for Vaisala ® DRYCAP Dewpoint Transmitter DMT345 ......19 Table 4 Optional Output Quantities and Their Abbreviations for Vaisala ® DRYCAP Dewpoint Transmitter DMT345 ......20 Table 5 Output Quantities and Their Abbreviations for Vaisala ®...
- Page 12 USER'S GUIDE____________________________________________________________________ This page intentionally left blank. 12 __________________________________________________________________ M210762EN-D...
-
Page 13: General Information
Support and Vaisala Service Centers. - Chapter 6, Calibration and Adjustment, provides you with instructions on how to calibrate and adjust Vaisala DRYCAP® Dewpoint Transmitters DMT345 and DMT346. - Chapter 7, Technical Data, provides the technical data of the product. -
Page 14: Version Information
Humidity Calibrator HMK15 User's Guide Feedback Vaisala Customer Documentation Team welcomes your comments and suggestions on the quality and usefulness of this publication. If you find errors or have other suggestions for improvement, please indicate the chapter, section, and page number. You can send comments to us by e- mail: manuals@vaisala.com... -
Page 15: Safety
Do not modify the unit. Improper modification can damage the product, CAUTION lead to malfunction, or make the product noncompliant with applicable legislation. ESD Protection Electrostatic Discharge (ESD) can cause immediate or latent damage to electronic circuits. Vaisala products are adequately protected against VAISALA _______________________________________________________________________ 15... -
Page 16: Recycling
USER'S GUIDE____________________________________________________________________ ESD for their intended use. However, it is possible to damage the product by delivering electrostatic discharges when touching, removing, or inserting any objects inside the equipment housing. To make sure you are not delivering high static voltages yourself: - Handle ESD sensitive components on a properly grounded and protected ESD workbench. -
Page 17: Transmitters With Wlan Interface
Cet appareil numérique de la classe [B] est conforme à la norme NMB- 003 du Canada. Patent Notice ® The Vaisala DRYCAP Dewpoint Transmitters DMT345 and DMT346 are protected by, for example, the following patents and their corresponding national rights:... -
Page 18: Trademarks
United States and/or other countries. License Agreement All rights to any software are held by Vaisala or third parties. The customer is allowed to use the software only to the extent that is provided by the applicable supply contract or Software License Agreement. -
Page 19: Chapter 2 Product Overview
Chapter 2 __________________________________________________________ Product Overview CHAPTER 2 PRODUCT OVERVIEW This chapter introduces the features and advantages of the Vaisala ® DRYCAP Dewpoint Transmitters DMT345 and DMT346. Introduction to DMT345 and DMT346 The DMT345 and DMT346 transmitters incorporate the advanced ®... -
Page 20: Basic Features And Options
Water vapor saturation pressure (P lb/in Enthalpy (h) kJ/kg Btu/lb Difference of T and T (∆T) ºC ºF Table 5 Output Quantities and Their Abbreviations for Vaisala ® DRYCAP Dewpoint Transmitter DMT346 Quantity Abbreviation Metric Unit Non Metric Unit Dewpoint temperature (T ºC ºF... -
Page 21: Operating Principle
- alarm relay module Operating Principle ® The DMT345/346 transmitter incorporates the Vaisala DRYCAP sensor, which uses an operating principle based on changes in capacitance as its thin polymer film absorbs water molecules together with a combined temperature measurement with a PT100 resistive temperature sensor. -
Page 22: Structure Of The Transmitter
USER'S GUIDE____________________________________________________________________ Structure of the Transmitter 0604-005 Figure 1 Transmitter Body The numbers refer to Figure 1 above: Signal + powering cable gland Cable gland for optional module, or WLAN antenna connector Cable gland for optional module Cover screw (4 pcs) Display with keypad (optional) Cover LED 22 __________________________________________________________________ M210762EN-D... -
Page 23: Figure 2 Inside The Transmitter
Relay, data logger, RS-422/485, LAN, or WLAN module (optional) Grounding connector Power supply module (optional) Relay, data logger, or analog output module (optional) Dewpoint probe Output isolation module (optional) Adjustment button and Manual AutoCal buttons with indicator led and pressure set buttons. VAISALA _______________________________________________________________________ 23... -
Page 24: Probes And Cooling Set
USER'S GUIDE____________________________________________________________________ Probes and Cooling Set 0604-007 Figure 3 Probes, Cooling Set Figure 3 above shows from left to right: DMT345 probe, DMT346 probe and the cooling set. The probes are available with the following cable lengths: 2 m, 5 m, and 10 m. Optional mounting flange for DMT345 probe 24 __________________________________________________________________ M210762EN-D... -
Page 25: Chapter 3 Installation
The housing can be mounted either without the mounting plate or with optional mounting plates. Standard Mounting without Mounting Plate Mount the housing without the mounting plate by fastening the transmitter to the wall with 4 screws, for example M6 (not provided). VAISALA _______________________________________________________________________ 25... -
Page 26: Wall Mounting With Wall Mounting Kit
Standard Mounting Wall Mounting with Wall Mounting Kit When mounting with wall mounting kit the mounting plate (Vaisala order code: 214829) can be installed directly on wall or onto a standard wall box (also US junction box). When wiring through back wall, remove the plastic plug from the wiring hole in the transmitter before mounting. -
Page 27: Figure 6 Dimensions Of The Plastic Mounting Plate (Mm/Inch)
Mount the plate to wall with 4 screws M8 (not provided) Fasten the transmitter to the mounting plate with 4 fixing screws M6 (provided) Note the position of the arrow when mounting. This side must be up when mounting. VAISALA _______________________________________________________________________ 27... -
Page 28: Mounting With Din Rail Installation Kit
Mounting with DIN Rail Installation Kit DIN rail installation kit includes a wall mounting kit, 2 clip-fasteners and 2 screws M4 × 10 DIN 7985 (Vaisala order code: 215094). Attach two spring holders to the plastic mounting plate by using the screws provided in the installation kit. -
Page 29: Pole Installation With Installation Kit For Pole Or Pipeline
Pole Installation with Installation Kit for Pole or Pipeline Installation kit for pole or pipeline (Vaisala order code: 215108) includes the metal mounting plate and 4 mounting nuts for pole mounting. When mounting, the arrow in the metal mounting plate must point upwards, see Figure 7 on page 27. -
Page 30: Mounting Rain Shield With Installation Kit
Horizontal Pole Installation Number refers to Figure 11 above: Mounting nuts M8 (4 pcs) Mounting Rain Shield with Installation Kit Vaisala order code for the rain shield: 215109. 0604-016 Figure 12 Mounting the Rain Shield with Installation Kit Numbers refer to Figure 12 above: Fasten the rain shield with installation kit to the metal mounting plate with 2 (M6) mounting screws (provided). -
Page 31: Panel Mounting Frame
Panel Mounting Frame To enable a neat and dirt free embedded installation of the transmitter, a panel mounting frame is available as an option (Vaisala order code: 216038). The frame is a thin, flexible plastic frame for the transmitter, with adhesive tape on one side. -
Page 32: Dmt345 Probe Mounting
Vaisala. The duct installation kit includes a flange, a sealing ring and screws for attaching the flange to the process or duct wall (Vaisala order code: 210696). 32 __________________________________________________________________ M210762EN-D... -
Page 33: Dmt346 Probe And Cooling Set Mounting
DMT346 Probe and Cooling Set Mounting 334.5 ø1 22.5 ø13.5 0604-020 Figure 17 DMT346 Probe Dimensions (in mm) The following numbers refer to Figure 17 above: Stainless steel grid Cable (length 2 m, 5 m or 10 m) VAISALA _______________________________________________________________________ 33... -
Page 34: Description Of The Cooling Set
USER'S GUIDE____________________________________________________________________ Description of the Cooling Set 27.5 112.5 40.6 sintered filter (fixed on top of the cooling set) mounting cooling element cooling fins flange Figure 18 Cooling Set Dimensions (in mm) The cooling set consists of a cooling element and removable cooling fins. The cooling fins are meant to be installed in applications where the process temperature and dewpoint are continuously in the range indicated in Figure 19 on page 35 (Measurement Ranges With and Without the... -
Page 35: Parts Of The Cooling Set
Measurement Ranges With and Without the Cooling Fins Parts of the Cooling Set cooling 15° 104.5 profile flange screen tube cooling cooling bush flange SECTION M6×60 DIN912 (AISI 316) 0604-023 Figure 20 Parts of the Cooling Set (Dimensions in mm) VAISALA _______________________________________________________________________ 35... -
Page 36: General Probe And Cooling Set Mounting Instructions
USER'S GUIDE____________________________________________________________________ lengthening max. 50 piece (pipe) welding mounting ø105 pipe M6×16 DIN912 (AISI 316) 0605-023 Figure 21 Mounting Flange Dimensions (in mm) General Probe and Cooling Set Mounting Instructions Follow these general mounting instructions to make the installation. Note the additional instructions in the following sections regarding specific situations (mounting with process shut down, mounting with process running, removing the transmitter for maintenance). -
Page 37: Figure 22 Installing The Probe Through Process Wall
< 160 wall thickness 0604-025 Figure 23 Installing Probe Through Thick Walls VAISALA _______________________________________________________________________ 37... -
Page 38: Probe And Cooling Set Mounting With Process Shut Down
USER'S GUIDE____________________________________________________________________ Probe and Cooling Set Mounting with Process Shut Down Complete the entire mounting process as instructed on page 36. Probe and Cooling Set Mounting with Process Running Follow this procedure to reduce the amount of condensation that builds up in the installation hole. -
Page 39: Wiring
NOTE When there is high electric noise level (for example near powerful electric motor) in the operating environment it is recommended to use shielded cable or take care that the signal cables are separated from other cables. VAISALA _______________________________________________________________________ 39... -
Page 40: Cable Grounding
USER'S GUIDE____________________________________________________________________ Cable Grounding Ground the screen of the electrical cable properly to achieve the best possible EMC performance. 0605-027 Figure 25 Grounding the Screen of Electrical Cable Cut back outer sheath to desired length. Cut back screen braiding or screen foil to dimension X (see Figure 25 A above). -
Page 41: Transmitter Housing Grounding
When connecting transmitter with 8-pin connector, see section 8-Pin Connector on page 60. 0605-028 Figure 26 Screw Terminal Block on the Motherboard Numbers refer to Figure 26 above: Supply terminals POWER 10 ... 35 VDC = 24 V~ User port (RS-232 terminals) Analog signal terminals VAISALA _______________________________________________________________________ 41... - Page 42 USER'S GUIDE____________________________________________________________________ WARNING Make sure that you connect only de-energized wires. Open the transmitter cover by taking out the four cover screws. Insert the power supply wires and signal wires through the cable bushing in the bottom of the transmitter; see the grounding instructions in the previous sections.
-
Page 43: Connections To A 24 Vac Power Supply
To prevent fire and/or damage, if either 24 VAC wire is grounded or connected to a "-", "0", or "GND" terminal of any other device, you must connect the same wire on the "-" terminal also on this instrument. VAISALA _______________________________________________________________________ 43... -
Page 44: Figure 27 Connections To 24 Vac Power Supply
USER'S GUIDE____________________________________________________________________ 0703-041 Figure 27 Connections to 24 VAC Power Supply 44 __________________________________________________________________ M210762EN-D... -
Page 45: Optional Modules
POWER 10 ... 35V 24V terminals of the motherboard. = – Installation Disconnect the power. Remove the protective plug from the cable gland and thread the wires. In case the power supply module is installed in the factory, continue with the step 5. VAISALA _______________________________________________________________________ 45... -
Page 46: Warnings
USER'S GUIDE____________________________________________________________________ To attach the module, open the transmitter cover and fasten the power module to the bottom of the housing with four screws. See the position from section Basic Features and Options on page 20. Connect the wires from the terminals of the power supply module marked with + and –... - Page 47 Het is niet toegestaan de stroomtoevoer module van de transmitter los te koppelen wanneer de stroom aan is. Het is niet toegestaan de stroom aan de stroomtoevoer module aan te sluiten als deze niet in een DMT345/346-transmitter is gemonteerd. Altijd beschermend aardcontact aansluiten! VAISALA _______________________________________________________________________ 47...
- Page 48 USER'S GUIDE____________________________________________________________________ Este producto cumple con la directiva de bajo voltaje (2006/95/EEC). La conexión de la alimentación principal al módulo de alimentación sólo puede realizarla un electricista autorizado. No desenchufe el módulo de alimentación del transmisor cuando esté encendido. No conecte la alimentación principal al módulo de alimentación cuando no esté instalado en el transmisor DMT345/346.
-
Page 49: Galvanic Isolation For Output
If galvanic isolation of the power supply line from the output signals is needed, DMT346 can be ordered with optional output isolation module. This module prevents harmful grounding loops. NOTE Output isolation module is not needed when using the power supply module. 0605-031 Figure 29 Galvanic Output Isolation Module VAISALA _______________________________________________________________________ 49... -
Page 50: Third Analog Output
USER'S GUIDE____________________________________________________________________ Third Analog Output 0503-030 Figure 30 Third Analog Output The following numbers refer to Figure 30 above: Flat cable pins Screw terminals for signal line DIP switches to select the output mode and range Installation and Wiring Disconnect the power. In case the analog output module is installed in the factory, continue with the step 4. -
Page 51: Alarm Relays
Connect the wires to the screw terminals: NO, C, NC. CAUTION For installations in the USA: If your transmitter has both the relay module and a LAN or WLAN module, the maximum voltage you are allowed to connect to the relay module is 50 V. VAISALA _______________________________________________________________________ 51... -
Page 52: Selecting Relay Activation State
USER'S GUIDE____________________________________________________________________ Selecting Relay Activation State The middlemost C terminal and either one of the terminals NO/NC shall be connected. The polarity can be freely selected. Normally open Common relay Normally closed Relay NOT activated: C and NC outputs are closed, NO is open Relay IS activated: C and NO outputs are closed, NC is open. -
Page 53: Rs-422/485 Interface
Connect the flat cable between the RS-485 module and the motherboard's pins MODULE1 (Communications). Pull the network wirings through the cable gland. Connect the twisted pair wires (1 or 2 pairs) to the screw terminals as presented in Table 6: VAISALA _______________________________________________________________________ 53... -
Page 54: Table 6 Connecting Twisted Pair Wires To Screw Terminals
USER'S GUIDE____________________________________________________________________ Table 6 Connecting Twisted Pair Wires to Screw Terminals Screw terminal Data line Data line (2-wire RS-485) (4-wire RS-485/422) (not connected) (not connected) Data pair shield Data pair shield If you use RS-485 (or RS-422) to connect just one DMT346 to a master computer, enable the internal termination of DMT346 by switching switches 1 and 2 ON. -
Page 55: Figure 34 4-Wire Rs-485 Bus Connections, Part A
Chapter 3 _______________________________________________________________ Installation 0605-034 Figure 34 4-Wire RS-485 Bus Connections, Part A Table 7 4-Wire (Switch 3:On) RS-485 master Data DMT346 → → ← ← VAISALA _______________________________________________________________________ 55... -
Page 56: Lan Interface
User Port is disabled. The LAN interface module must be installed at the factory (when ordering the transmitter), or by a Vaisala Service Center. Once installed, the module is automatically used by the transmitter. The physical... -
Page 57: Wlan Interface
Access (WPA). For WEP, 64 and 128 bit encryption is supported, with open system or shared key authentication. WPA is used in the Pre-Shared Key (PSK) mode, with either TKIP or CCMP protocol. When the WLAN Interface is in use, serial communication using the User Port is disabled. VAISALA _______________________________________________________________________ 57... -
Page 58: Attaching The Wlan Antenna
Attaching the WLAN Antenna The LAN interface module must be installed at the factory (when ordering the transmitter), or by a Vaisala Service Center. Before taking the transmitter into use, the user must attach the antenna of the WLAN interface into the RP-SMA connector on the transmitter cover. The location of the antenna is shown in Figure 75 on page 150. -
Page 59: Figure 38 Data Logger Module
This updates the time offset used on the display and the serial port. You can set the time by using the keypad/display or the serial commands. 0706-068 Figure 38 Data Logger Module VAISALA _______________________________________________________________________ 59... -
Page 60: 8-Pin Connector
The data logger module must be installed at the factory (when ordering the transmitter), or by a Vaisala Service Center. Once installed, the module is automatically used by the transmitter. When the module requires a new battery, the transmitter must be sent to Vaisala for maintenance. 8-Pin Connector... - Page 61 Chapter 3 _______________________________________________________________ Installation PIN/Terminal Wire Serial Signal Analog Signal Pink Supply + Supply + Supply + Blue Data in RX Shield/Red Cable shield Cable shield Cable shield VAISALA _______________________________________________________________________ 61...
- Page 62 USER'S GUIDE____________________________________________________________________ This page intentionally left blank. 62 __________________________________________________________________ M210762EN-D...
-
Page 63: Chapter 4 Operation
Basic Display Display shows you the measurement values of the selected quantities in the selected units. You can select 1 ... 3 quantities for the numerical basic display (see section Changing Quantities and Units on page 89). VAISALA _______________________________________________________________________ 63... -
Page 64: Graphic History
USER'S GUIDE____________________________________________________________________ 0605-036 Figure 40 Basic Display The numbers refer to Figure 40 above: The INFO shortcut button The GRAPH shortcut button changes the display into a curve mode Selected quantities Press the INFO button (in the basic display) to see the device information views, see section Device Information on page 98. -
Page 65: Figure 42 Graphical Display With Data Logger
If you change the transmitter's date and time setting, the displayed timestamps in the history graph change accordingly. For an explanation of the effect of changing the date and time manually, see section Data Logger Module on page 58. VAISALA _______________________________________________________________________ 65... -
Page 66: Menus And Navigation
USER'S GUIDE____________________________________________________________________ Table 12 Graph Information Messages Failure Message Interpretation Power outage Power failure (marked also with dashed vertical line) No data Quantity has not been selected for the display Device failure General device failure. T meas. failure Temperature measurement/sensor failure RH meas. -
Page 67: Changing The Language
Rounding Setting Round off one decimal by using the Rounding function . The default setting is rounding on. Rounding has no effect on quantities without decimals. Open the MAIN MENU by pressing any of the ▲▼◄► arrow buttons. VAISALA _______________________________________________________________________ 67... -
Page 68: Display Backlight Setting
USER'S GUIDE____________________________________________________________________ Select ►Display and confirm by pressing the ► arrow button. Select Rounding and press ON/OFF button. Press EXIT to return to the basic display. Display Backlight Setting As a default the display backlight is always on. In the automatic mode the backlight stays on for 30 seconds from the last press of the button. -
Page 69: Factory Settings
Each alarm also has a configurable hysteresis value to prevent unnecessary triggering when the measurement fluctuates around an alarm limit. The alarms can be configured for any quantity supported by the transmitter. VAISALA _______________________________________________________________________ 69... -
Page 70: Configuring A Display Alarm
USER'S GUIDE____________________________________________________________________ The configuration of the Display Alarms can only be done using the display/keypad option. An alarm is activated when the selected quantity goes higher than the high limit, or lower than the low limit, much in the same way as the relays. -
Page 71: Mi70 Link Program For Data Handling
Follow the steps below to connect your transmitter to the MI70 Link program using the serial interface: Connect your PC to the transmitter. Refer to section Serial Line Communication on page 72. Check that the transmitter is powered. VAISALA _______________________________________________________________________ 71... -
Page 72: Serial Line Communication
Start using the program. There is usually no need to select a COM port manually, the MI70 Link software can detect it automatically. The MI70 Link program, and the optional connection cables, are available from Vaisala. See list of accessories in section Options and Accessories on page 148. Serial Line Communication Connect the serial interface by using either the user port or the service port. -
Page 73: Service Port Connection
PC via a standard type A USB port. Note that the USB cable does not enable high speed data transfer, since the bit rate is limited by the serial interface of the service port. VAISALA _______________________________________________________________________ 73... -
Page 74: Installing The Driver For The Usb Cable
Link detects the USB connection automatically. There is no reason to uninstall the driver for normal use. However, if you wish to remove the driver files and all Vaisala USB cable devices, you can do so by uninstalling the entry for Vaisala USB Instrument Driver from the Add or Remove Programs (Programs and Features in Windows Vista) in the Windows Control Panel. -
Page 75: Lan Communication
The IP settings of the LAN and WLAN interfaces are described in Table 15. The current settings can be viewed on the serial line or using the device information display; see section Device Information on page 98. VAISALA _______________________________________________________________________ 75... -
Page 76: Using Display/Keypad
USER'S GUIDE____________________________________________________________________ Table 15 IP Settings for the LAN and WLAN Interfaces Parameter Description Automatic configuration If enabled, the transmitter will retrieve its network (DHCP) settings (including the IP Address) from a server in the network. If disabled, static network settings are used instead. -
Page 77: Using Serial Line
The four part network ID of the transmitter. Must be set manually if automatic configuration is not used. SUBNET Used together with the IP address to determine which network the transmitter is a part of. Must be set manually if automatic configuration is not used. VAISALA _______________________________________________________________________ 77... -
Page 78: Wireless Lan Configuration
USER'S GUIDE____________________________________________________________________ where GATEWAY IP address of the server that enables the transmitter to access other networks. Must be set manually if automatic configuration is not used. Examples: >net refresh DHCP : OFF IP address : 192.168.0.101 Subnet mask : 255.255.255.0 Default gateway: 192.168.0.1 Web config. -
Page 79: Using Display/Keypad
To change the SSID, press the SET button. Use the ▲▼ arrow buttons to change the character under the cursor, and ◄► arrow buttons to more the cursor. Press the OK button when done. VAISALA _______________________________________________________________________ 79... -
Page 80: Using Serial Line
USER'S GUIDE____________________________________________________________________ 0802-110 Figure 52 Entering Network SSID To change the currently selected Network type, select the Type entry and press the Change button. Select the new type from the list and press the Select button. 0802-112 Figure 53 Selecting the Wireless Network Type If you have selected an encrypted network type (WEP or WPA), you must enter the security key to be used. -
Page 81: Telnet Settings
The LAN and WLAN interfaces both have a web configuration page that is accessible using a browser. If you have not disabled the page from the network settings, you can access it with a web browser at the IP address of the interface. VAISALA _______________________________________________________________________ 81... -
Page 82: Terminal Program Settings
The instructions below describe how to connect to the transmitter using the PuTTY terminal application for Windows. Perform the necessary cabling and configuration of the transmitter before following the instructions. PuTTY is available for download at www.vaisala.com. 82 __________________________________________________________________ M210762EN-D... -
Page 83: Opening A Serial/Usb Connection
COM port is selected in the Serial or USB line to connect to field. Change the port if necessary. If you are using a Vaisala USB cable, you can check the port that it uses by clicking the USB Finder... button. This opens the Vaisala USB Instrument Finder program that has been installed along with the USB drivers. -
Page 84: Opening A Telnet Session (Lan/Wlan)
USER'S GUIDE____________________________________________________________________ Opening a Telnet Session (LAN/WLAN) The instructions below assume that the LAN/WLAN interface on the NOTE transmitter is correctly configured and the network connection is already done. Power up the instrument and start the PuTTY application. If your transmitter acquires a network address using DHCP, wait for a minute for this to complete, then verify the address from the transmitter. -
Page 85: List Of Serial Commands
DSEL Select logged (and displayed) quantities DELETE Delete all data files, including the memory of the optional data logger module UNDELETE Recover the deleted files that have not been overwritten VAISALA _______________________________________________________________________ 85... -
Page 86: Table 20 Purge Commands
USER'S GUIDE____________________________________________________________________ Table 20 Purge Commands Command Description Purge settings PURGE Start manual purge Table 21 Autocalibration Commands Command Description AUTO AutoCal settings AUTOCAL Start manual AutoCal Table 22 Calibration and Adjustment Commands Command Description FCRH RH 2-point-adjustment AØ1 Td/f 1-point-adjustment T 1/2-point-adjustment ACAL Perform analog output adjustment... -
Page 87: Getting Measurement Message From Serial Line
FTIME. Stopping Continuous Outputting Use the S command to end the RUN mode. After this command all other commands can be used. You can also press the Esc button or reset the transmitter to stop the outputting. VAISALA _______________________________________________________________________ 87... -
Page 88: Formatting Serial Line Message
USER'S GUIDE____________________________________________________________________ See command SMODE to change the default (power-up) operation mode. Formatting Serial Line Message FTIME and FDATE FTIME and FDATE commands will enable/disable output of time and date to the serial line. To add time to R and SEND outputs issue command FTIME [x]. -
Page 89: General Settings
Press ► arrow button to select Quantities. Select the quantity by using the ▲▼ arrow buttons. Confirm the selection by pressing SELECT. You can select 1 ... 3 display quantities at a time. Press EXIT to return to the basic display. VAISALA _______________________________________________________________________ 89... -
Page 90: Using Serial Line
USER'S GUIDE____________________________________________________________________ To select display units: Open the MAIN MENU by pressing any of the ▲▼◄► arrow buttons. Press the ► arrow button to select Display. Use the ▲▼arrow buttons to select Units. Confirm the selection by pressing the right-hand arrow button. Use the ▲▼... -
Page 91: Unit
0.5 'C x= 4.0 g/kg SSR= 22.4 % Ts= 23.1 'C > UNIT Use the command UNIT [x] to select metric or non-metric output units. Syntax: UNIT [x] where or N = metric units = nonmetric units VAISALA _______________________________________________________________________ 91... -
Page 92: Pressure Compensation Setting
O at 4°C. Pressure compensation is intended to be used in normal air only. When NOTE measuring in other gases, please contact Vaisala for further information. NOTE Fixed pressure compensation value of 1013.25 hPa is used when in adjustment mode. -
Page 93: Using Buttons On Motherboard
Command XPRES should be used if the value is changed frequently. Its value is not retained at reset, and when set to 0, last value set with PRES is used instead. Syntax: PRES [aaaa.a] XPRES [aaaa.a] where aaaa.a = Absolute process pressure (hPa) VAISALA _______________________________________________________________________ 93... -
Page 94: Date And Time
USER'S GUIDE____________________________________________________________________ Example: >pres Pressure : 1013.00 hPa ? >pres 1010 Pressure : 1010.00 hPa > Table 27 Multiplication Factors From To: hPa mbar PaN/m2 0.01 mmHg torr 1.333224 inHg 33.86388 0.09806650 2.490889 1013.25 980.665 1000 68.94757 1) psi = psi absolute Example: 29.9213 inHg = 29.9213 ×... -
Page 95: Using Serial Line
Use the arrow buttons to set the measuring interval and the unit. Press OK to confirm your settings. Select POLL address for POLL communication mode. Press SET to confirm your selection. Use the arrow buttons to set the transmitter address. Press OK to confirm the setting. VAISALA _______________________________________________________________________ 95... -
Page 96: Seri
USER'S GUIDE____________________________________________________________________ Use the arrow buttons to select ECHO. Press ON to turn to it on. Press OFF to turn it off. Press EXIT to return to the basic display. SERI Use the serial line command SERI [b p d s] to set communication settings for the user port. -
Page 97: Intv
Syntax: ECHO [x] where ON (default) or NOTE You can use the SERI, SMODE, INTV and ECHO commands to change/view the user port settings even if you are currently connected to the service port. VAISALA _______________________________________________________________________ 97... -
Page 98: Data Filtering
USER'S GUIDE____________________________________________________________________ Data Filtering The averaging data filter calculates a average over a certain period of time. The lowest measurement noise is achieved with the extended filtering. There are three filtering levels available. Table 29 Filtering Levels Setting Filtering level No filtering ON (default) Standard = short filtering (about 15 s moving average) -
Page 99: Figure 58 Following Device Information On The Display
Press OK to return to the basic display. Use the serial line command ? to check the current transmitter configuration. Command ?? is similar but can also be used if the transmitter is in POLL mode. VAISALA _______________________________________________________________________ 99... -
Page 100: Help
>? DMT340 / 3.01 Serial number : A3220001 Batch number : A3120029 Adjust. date : 2005-08-09 Adjust. info : Vaisala/HEL Date : 2000-01-01 Time : 00:42:41 Serial mode : STOP Baud P D S : 4800 E 7 1 Output interval: 0 s... -
Page 101: Vers
0 - No lock (enables full access) 1 - Menu locked, but graphs are accessible 2 - Keypad completely disabled yyyy = 4-digit PIN code. The code can only be set when keypad locking level is 1. VAISALA ______________________________________________________________________ 101... -
Page 102: Data Recording
USER'S GUIDE____________________________________________________________________ Examples: >lock 1 4444 Keyboard lock : 1 [4444] > >lock 1 Keyboard lock > Data Recording Data recording function is always on and collects data automatically into the memory of the device. If the optional data logger module is installed, the transmitter uses it automatically. -
Page 103: View Recorded Data
5 and 18. See Table 11 on page 65. Select, for example, two quantities (T and Tdf). The last column illustrates the number of data points that has been stored in the file. VAISALA ______________________________________________________________________ 103... -
Page 104: Play
USER'S GUIDE____________________________________________________________________ Example (data logger module installed): >dir File description Oldest data available No. of points (90 s intervals) 2007-05-30 05:25:30 1555200 (12 min intervals) 2007-05-29 05:48:00 194400 (2 h intervals) 2007-05-19 02:00:00 19440 (12 h intervals) 2007-03-23 12:00:00 3240 (3 d intervals) 2006-04-20 00:00:00 (12 d intervals) -
Page 105: Deleting Recorded Files
To delete the data files using the keypad/display: Open the MAIN MENU by pressing any of the ▲▼◄► arrow buttons. Select System by pressing the ► arrow button. VAISALA ______________________________________________________________________ 105... -
Page 106: Undelete
USER'S GUIDE____________________________________________________________________ Select Clear graph memories by pressing the CLEAR button. Press the YES button to confirm the selection. CAUTION This function clears the entire data history of the transmitter, including all graphs and the content of the optional data logger module. UNDELETE Similarly to the DELETE command, the UNDELETE command is used without any arguments. -
Page 107: Figure 59 Current/Voltage Switches Of Output Modules
Switches for service use only. Keep in OFF position always. NOTE Only one of the switches, 1 or 2, must be ON at a time. Only one of the switches, 3 to 7, must be ON at a time. VAISALA ______________________________________________________________________ 107... -
Page 108: Analog Output Quantities
USER'S GUIDE____________________________________________________________________ Example: 0 ... 5 V voltage output selected for channel 1 and 4 ... 20 mA selected for channel 2. Selection █ █ Voltage output selected █ █ █ █ 0 ... 5 V selected █ █ █ Current output selected █... -
Page 109: Amode/Asel
Use the command ASEL [xxx yyy] as shown in the example below when using a device with two analog outputs. Example: >asel Ch1 Tdf : -20.00 'C ? Ch1 Tdf high : 100.00 'C ? Ch2 x : 0.00 g/kg ? Ch2 x high : 500.00 g/kg ? > VAISALA ______________________________________________________________________ 109... -
Page 110: Analog Output Tests
USER'S GUIDE____________________________________________________________________ Analog Output Tests Use the display/keypad for testing to test the operation of the analog by forcing the outputs to known values. Measure then the values with a current/voltage meter. Use the display/keypad for testing. Open the MAIN MENU by pressing any of the ▲▼◄► arrow buttons. -
Page 111: Analog Output Fault Indication Setting
The error output value must be within a valid range for the output type. The error output value is displayed only when there are minor electrical NOTE faults such as a humidity sensor damage. When there is a severe device malfunction, the error output value is not necessarily shown. VAISALA ______________________________________________________________________ 111... -
Page 112: Operation Of Relays
USER'S GUIDE____________________________________________________________________ Operation of Relays Quantity for Relay Output A relay monitors the quantity chosen for the relay output. Any of the quantities available can be chosen. Measurement-Based Relay Output Modes Relay Setpoints When the measured value is in between the "above" and "below" values, the relay is passive. -
Page 113: Hysteresis
If both setpoints are specified and "above" setpoint is lower than NOTE "below" setpoint, the hysteresis works in the opposite direction, that is, relay is released when the measured value passes the exact value of the setpoint. VAISALA ______________________________________________________________________ 113... -
Page 114: Relay Indicating Transmitter Error Status
USER'S GUIDE____________________________________________________________________ Relay Indicating Transmitter Error Status You can set a relay to follow the operation status of the device. By selecting FAULT/ONLINE STATUS for output quantity a relay changes state on the basis of the operation status as follows: FAULT STATUS Normal operation: relay active (C and NO outputs are closed) Not measuring state (error state or power off): relay released (C and NC... -
Page 115: Enabling/Disabling Relays
Enabling/Disabling Relays You can deactivate the relay outputs for example for service purposes of your system. Indication Led Operation Relay is activated: LED is lit Relay is not activated: LED is not lit VAISALA ______________________________________________________________________ 115... -
Page 116: Setting Relay Outputs
USER'S GUIDE____________________________________________________________________ Setting Relay Outputs NOTE When having only one relay module installed, its relays are called 'relay 1' and 'relay 2'. When having two relay modules, the relays of the module connected to slot MODULE 1 (communications) are called 'relay 1' and 'relay 2' and relays connected to slot MODULE 2 are called 'relay 3' and 'relay 0706-029 Figure 62... -
Page 117: Rsel
: 2.00 % ? 2 Rel1 SSR enabl: ON ? on Rel2 Ts above: 80.00 'C ? 140 Rel2 Ts below: 60.00 'C ? - Rel2 Ts hyst : 1.00 'C ? 2 Rel2 Ts enabl: ON ? on > VAISALA ______________________________________________________________________ 117... -
Page 118: Testing Operation Of Relays
USER'S GUIDE____________________________________________________________________ Example of using relay 1 as fault alarm: Selecting relay 1 to follow the fault status and relay 2 to follow the temperature measurement. >rsel fault ts Rel1 FAUL above: - Rel1 FAUL below: - Rel1 FAUL hyst : - Rel1 FAUL enabl: ON ? on Rel2 Ts above: 140.00 'C ? 140... -
Page 119: Operation Of The Rs-485 Module
Syntax: SERI [b p d s] where baud rate (300, 600, 1200, 2400, 4800, 9600,19200, 38400, 57600, 115200) parity (n = none, e = even, o = odd) data bits (7 or 8) stop bits (1 or 2) VAISALA ______________________________________________________________________ 119... -
Page 120: Echo
USER'S GUIDE____________________________________________________________________ ECHO Use the ECHO [x] command to enable/disable echo of characters received over the serial line. Syntax: ECHO [x] where ON/OFF (default = OFF) When using 2-wire connection, echo must be always disabled. SMODE Use the SMODE [xxxx] command to set the serial interface mode. where xxxx STOP, RUN, POLL or SEND... -
Page 121: Addr
[nn] command sets one transmitter temporarily to STOP mode so that other commands can be issued. Syntax: OPEN [nn] where address of the transmitter (0 ... 99) CLOSE The CLOSE command switches the transmitter back to the POLL mode. VAISALA ______________________________________________________________________ 121... -
Page 122: Sdelay
USER'S GUIDE____________________________________________________________________ Example: >OPEN 2 (opens the line to transmitter 2, other transmitters stay in POLL mode) >CRH(for example, calibration performed) >CLOSE (line closed) SDELAY With the sdelay command you can set delay (response time) for user port (RS-232 or RS-485), or view currently set delay value. Value corresponds to tens of milliseconds (eg. -
Page 123: Automatic Autocal
AutoCal procedure. See Figure 57 on page 93 for location of the AUTOCAL/pressure set buttons. If the AutoCal conditions are not fulfilled, a note appears on the display informing that the calibration cannot be made. VAISALA ______________________________________________________________________ 123... -
Page 124: Sensor Purge
USER'S GUIDE____________________________________________________________________ Sensor Purge Sensor Purge is available for DMT345 and DMT346. The Purge should be carried out to achieve the shortest response times and the best long- term stability. Sensor Purge is an automatic procedure, in which the sensor is dried. Thus, the sensor will response very fast when installing the probe from an ambient to a dry gas. -
Page 125: Interval Purge
Power-up Purge : ON ? Duration : 60 s ? Settling : 240 s ? Temperature : 180 'C ? Temp. diff. : 0.5 'C ? Trigger Purge : OFF ? RH trigger : 20 %RH ? > VAISALA ______________________________________________________________________ 125... -
Page 126: Purge
USER'S GUIDE____________________________________________________________________ NOTE When Purge in power up is enabled, wait about 5 min after power up before taking measurements. The output channels are locked for the first operation minutes to the initial measured values. PURGE Use the command PURGE to start the manual Purge. Issue command PURGE to start Purge immediately. -
Page 127: Chapter 5 Maintenance
Changing the Cooling Set Filter Turn the filter counter-clockwise to remove it. Install a new filter on the cooling set and tighten it. New filters can be ordered from Vaisala, see Available Options and Accessories Table 41 on page 148. Error States... -
Page 128: Figure 66 Error Indicator And Error Message
Clean the probes from dirt, water, ice or other contaminants. Internal ADC read error Internal transmitter failure. Remove the transmitter and return the faulty unit to Vaisala Service. Checksum error in the Internal transmitter failure. Remove the internal configuration... -
Page 129: Technical Support
Read the section Warranty on page 18. Contact a Vaisala Service Center or a local Vaisala representative. The latest contact information and instructions are available from www.vaisala.com. Addresses of the Service Centers are provided in section Service Centers on page 130. -
Page 130: Vaisala Service Centers
Include the information specified in step 2 in the box with the faulty product. Also include a detailed return address. Ship the box to the address specified by your Vaisala contact. Vaisala Service Centers Vaisala Service Centers perform calibrations and adjustments as well as repair and spare part services. -
Page 131: Calibration And Adjustment
It is recommended that the device should be sent to a Vaisala Service Center for calibration and adjustment. See contact information in section Vaisala Service Centers on page 129. -
Page 132: Opening And Closing Adjustment Mode
USER'S GUIDE____________________________________________________________________ Opening and Closing Adjustment Mode Open the transmitter cover. The buttons needed in the adjustment are on the left-hand side of the motherboard, see Figure 2 on page 23. Press the ADJ button to enable the adjustment mode. The indicator led indicates the adjustment availability. -
Page 133: Two-Point Relative Humidity Adjustment
NOTE Reference humidities must be ~0 %RH and 30 ... 75 %RH. A suitable product for the two point RH calibration is for example the Vaisala Humidity Calibrator HMK15. Press the ADJ button (see Figure 2 on page 23) to open the ADJUSTMENT MENU: measurement, press ►... -
Page 134: Using Serial Line
Using Serial Line NOTE Reference humidities must be ~0 %RH and 30 ... 75 %RH. A suitable product for the two point RH calibration is for example the Vaisala Humidity Calibrator HMK15. Connect the DMT345/346 to a PC. See section Serial Line Communication on page 72. - Page 135 (date and text) to the memory of the transmitter, see section Adjustment Information on page 132. Press the ADJ button on the motherboard to close the adjustment mode. Take the probe out of the reference conditions and replace the filter. VAISALA ______________________________________________________________________ 135...
-
Page 136: One-Point Dewpoint Adjustment
USER'S GUIDE____________________________________________________________________ One-Point Dewpoint Adjustment One-Point Dewpoint Adjustment Using Display/Keypad NOTE This is a highly critical adjustment, to be performed only in laboratory conditions. Preferably use the display/keypad interface to perform one-point dewpoint T adjustment. Before proceeding with the Td/f adjustment you must perform the RH adjustment. -
Page 137: One-Point Dewpoint Adjustment Using Serial Line
One-point Dewpoint Adjustment Using Serial Line Let the sensor stabilize for at least one (1) hour. Press the ADJ button on the motherboard to enable adjustments. Use the AØ1 command to perform the adjustment. Syntax: AØ1 VAISALA ______________________________________________________________________ 137... -
Page 138: Adjusting Temperature
USER'S GUIDE____________________________________________________________________ Example: >a01 Tf : -34.25 'C Ref ? -33 Wait for Purge data...OK > Press the ADJ button on the motherboard inside the transmitter to disable adjustments. Several AutoCals can be necessary after this adjustment has been NOTE performed until the transmitter reaches full accuracy. -
Page 139: Adjusting Temperature Using Serial Line
Press any key when ready 16.06 Ref2 ? > OK indicates that the calibration has succeeded. Press the ADJ button on the motherboard to close the adjustment mode. Take the probe out of the reference conditions and replace the filter. VAISALA ______________________________________________________________________ 139... -
Page 140: Adjusting Analog Outputs
USER'S GUIDE____________________________________________________________________ Adjusting Analog Outputs In the analog output calibration the analog output is forced to the following values: current output = 2 mA and 18 mA voltage output = 10 % and 90 % of the range Connect DMT346 to a calibrated current/voltage meter in order to measure either current or voltage depending on the selected output type. -
Page 141: Adjusting Analog Outputs Using Serial Line
ACAL command and enter the multimeter reading. Example (current outputs): >ACAL (mA) ? 2.046 (mA) ? 18.087 (mA) ? 2.036 (mA) ? 18.071 > Press the adjustment button on the motherboard inside the transmitter again to disable the adjustment function. VAISALA ______________________________________________________________________ 141... -
Page 142: Chapter 7 Technical Data
Specifications Performance Table 32 Dewpoint Specifications DMT345 Property Description / Value Sensor Vaisala DRYCAP®180S Measurement range -40 ... +100 °C (-40 … +212 °F) T Accuracy ±2 °C (±3.6 °F) T See accuracy graph in Figure 72 on page 143. -
Page 143: Figure 72 Dewpoint Measurement Accuracy Graph Dmt345
±10 % of reading above 10% RH ±1.5 %RH + 1.5 % of reading Table 35 Mixing Ratio Specifications DMT345 Property Description / Value Measurement range (typical) 0 ... 1000 g/kg (0..7000 gr/lbs) Accuracy ±12 % of reading VAISALA ______________________________________________________________________ 143... -
Page 144: Figure 73 Dewpoint Measurement Accuracy Graph Dmt346
USER'S GUIDE____________________________________________________________________ Table 36 Dewpoint Specifications DMT346 Property Description / Value Sensor Vaisala DRYCAP®180S Measurement range -25 … +100 °C (-13 … +212 °F) T Accuracy ±2 °C (±3.6 °F) T See the accuracy graph in Figure 73 below Response time 63% [90%] flow rate... -
Page 145: Table 39 Inputs And Outputs Specifications (Both Models)
Probe cable diameter 5.5 mm Probe cable lengths 2 m, 5 m or 10 m Probe tube material AISI 316L Housing material G-AlSi 10 Mg (DIN 1725) Housing classification IP 65 (NEMA 4X) Housing weight 1.2 kg VAISALA ______________________________________________________________________ 145... -
Page 146: Technical Specifications Of Optional Modules
USER'S GUIDE____________________________________________________________________ Technical Specifications of Optional Modules Power Supply Module Operating voltage 100 ... 240 VAC 50/60 Hz Connections screw terminals for 0.5 ... 2.5 mm wire (AWG 20 ... 14) Bushing for 8 ... 11 mm diameter cable Operating temperature -40 ... -
Page 147: Rs-485 Module
13.7 million points / parameter Accuracy of the clock better than ±2 min/year Battery lifetime at -40 ... +30 ºC (-40 ... +86 ºF) 7 years at +30 ... +60 ºC (+86 ... +140 ºF) 5 years VAISALA ______________________________________________________________________ 147... -
Page 148: Options And Accessories
USER'S GUIDE____________________________________________________________________ Options and Accessories Table 41 Options and Accessories Item Order Code MODULES Relay module RELAY-1 Analog Output Module AOUT-1 Isolated RS485 Module RS485-1 Power Supply Module POWER-1 Galvanic Isolation Module DCDC-1 FILTERS for DMT345 Sintered Filter AISI 316L HM47280SP for DMP246CS Sintered Filter AISI316L D=20mm... -
Page 149: Dimensions (Mm/Inch)
Chapter 7 ____________________________________________________________ Technical Data Dimensions (mm/inch) 0605-044 Figure 74 DMT345/346 Transmitter Body Dimensions VAISALA ______________________________________________________________________ 149... -
Page 150: Figure 75 Wlan Antenna Dimensions
USER'S GUIDE____________________________________________________________________ 0804-035 Figure 75 WLAN Antenna Dimensions 150 _________________________________________________________________ M210762EN-D... -
Page 151: Example Installation Of Dmt346
(max. 50 mm) can be welded on the mounting tube (for walls thicker than 175 mm, see Figure 23 on page 37). The cooling set is mounted in a vertical position. Tighten the screws properly in order to ensure a thermal contact. VAISALA ______________________________________________________________________ 151... -
Page 152: Figure 77 Insulation With Mineral Wool
USER'S GUIDE____________________________________________________________________ Unfasten the locking screws on the cooling bar so that you can push the probe into the bar. NOTE Push the probe deep enough: make sure that the marking hole meets the end of the bar. Lock the probe in place by tightening the locking screws on the bar. -
Page 153: Appendix Bcalculation Formulas
7.5000 237.3 50 ... 100 °C 5.9987 7.3313 229.1 100 ... 150 °C 5.8493 7.2756 225.0 150 ... 180 °C 6.2301 7.3033 230.0 1) Used for frostpoint calculation if the dewpoint is negative Mixing ratio: VAISALA ______________________________________________________________________ 153... - Page 154 USER'S GUIDE____________________________________________________________________ Absolute humidity: Enthalpy: . 1 ( 00189 The water vapor saturation pressure P is calculated by using two equations (5 and 6): where: temperature in K coefficients 0.4931358 -0.46094296 ×...
- Page 155 Parts per million by volume is calculated using: Symbols: dewpoint temperature (°C) water vapour pressure (hPa) water vapour saturation pressure (Pa) relative humidity (%) mixing ratio (g/kg) atmospheric pressure (hPa) absolute humidity (g/m temperature (K) enthalpy (kJ/kg) VAISALA ______________________________________________________________________ 155...
- Page 156 USER'S GUIDE____________________________________________________________________ 156 _________________________________________________________________ M210762EN-D...
- Page 157 *M210762EN*...