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OM-WEB-TEMP

OM-WEB-TEMP

分  类：其它

品  牌：欧米茄

厂  商：Omega工业测量（中国）

型  号：OM-WEB-TEMP

相关行业：

发布时间：2019-12-19 18:00 浏览人数：人

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    参数
    包装
    • Built-In Web Server
    • 8 Differential Input Channels
    • Supports Thermocouples (Types J, K, T, E, N, R, S, B), RTDs, Thermistors and Semiconductor Temperature Sensors
    • Built-In Cold Junction Compensation and Open Thermocouple Detection
    • 24-Bit Measurement System
    • 8 Digital I/O–User Configurable for Alarms

      • The OM-WEB-TEMP is a temperature measurement devicewith built-in web server. Simply connect the device to an Ethernetport or hub and view current data using a standard web browser.The OM-WEB-TEMP’s embedded web interface provides access tocurrent data and configuration settings using a standard webbrowser. Browse to the device’s home page by entering the URLthat is printed on the device into the browser. View current sensormeasurements and channel data, and configure hardware optionsfrom the device’s home page. Only one user can change configurationoptions on the device at a time. The web interface is built into thedevice’s firmware, and does not need to be installed on a computer.No external software is required other than a web browser and aTCP/IP connection. Connect the device’s 10Base-T Ethernet port toa local or wide area network using the supplied ethernet cable, to asingle computer through a hub using the supplied ethernet cable,or directly to a computer using a standard CAT-5 crossover cable.The web browser used to accessthe OM-WEB-TEMP’s web interface must support JavaScript.

      The OM-WEB-TEMP provides 8 temperature channels and 8 digitalI/O channels. The included external power supply (ac adaptor) is used toprovide power. On-board LEDs display the status of communicationsand external power. All hardware configurable options are selectablewith the web browser or the included InstaCalTM utility software. Networkconfigurable options are settable using InstaCal. When using InstaCal,if the login settings have been changed from the default, a loginname and password are required to change the configuration settings.

      The OM-WEB-TEMP provides 8 differential input channels that aresoftware programmable for different sensor types including:

      • Thermocouple Types J, K, T, E, R, S, B, N
      • RTD–2, 3 or 4-wire Pt100 RTDs
      • 2-, 3- or 4-wire thermistor measurements
      • Semiconductor temperature sensors–LM36 or equivalent

      The OM-WEB-TEMP provides a 24-bit analog-to-digital (A/D)converter for each pair of differential analog input channels. Each pair ofdifferential inputs constitutes a channel pair. A different type ofsensor (i.e., thermocouple, RTD, thermistor or semiconductor) can beconnected to each channel pair, however both channels in thechannel pair need to be the same sensor type (although ifthermocouples are connected it is possible to mix thermocouple types).The OM-WEB-TEMP provides four integrated cold junctioncompensation (CJC) sensors for thermocouple measurements andbuilt-in current excitation sources for resistive sensor measurements,Each CJC sensor is dedicated to one of the four channel pairs. Anopen thermocouple detection feature allows detection of a brokenthermocouple. An onboard microprocessor automaticallylinearizes the measurement data.

      The OM-WEB-TEMP features8 independent temperature alarms, Each alarm controls an associateddigital I/O channel as an alarm output. The input to each alarm isone of the temperature input channels, The output of each alarmis software configurable as an active high or low. The userconfigurable threshold conditions activate each alarm. When an alarmis activated, the associated DIO channel is driven to the activeoutput state selected. Eight digital I/O channels areprovided to communicate with external devices and to generatealarms. The digital bits are software programmable for input or output.The digital output voltage is switchselectablefor 3.3V or 5V logic. A screw terminal is provided forpull-up or pull-down configuration.

      The OM-WEB-TEMP web interface displays current data read from thedevice and does not log or store historical data. Use the includedTracerDAQ software to log or graphically trend your data. The OM-WEB-TEMP module shipswith an impressive array of software,including TracerDAQ®, a full-featured,out-of-the-box data logging, viewing,and analysis application. Driversupport and detailed exampleprograms are included for UniversalLibrary programming librariesfor Microsoft® Visual Studio®programming languages, and otherlanguages, including DASYLab®, andULx for NI LabVIEW® (comprehensivelibrary of VIs and example programscompatible with 32-bit and 64-bit LabVIEW 2010 or later) andInstaCalTM installation, calibration and test utility - powerful solutions forprogrammers and nonprogrammersalike. These modules operate underMicrosoft Windows® VISTA/7/8/10(32-bit and 64-bit) operating systems.

      Specifications
      ANALOG INPUTS
      A/D Converter:       4 dual 24-bitsigma delta A/D converters
      Input Isolation: 500 Vdc min betweenfield wiring and USB interface
      Number of Channels: 8 differentialtemperature inputs
      Differential Input Voltage Range: Thermocouple, ±0.080V
      RTD: 0 to 0.5V
      Thermistor: 0 to 2V
      Semiconductor: 0 to 2.5V
      Absolute Maximum Input Voltage: ±25V (power on), ±40V (power off)
      Throughput Rate: 2 samples/secmax for all active channels
      Input Impedance:v 5 GΩ min
      Input Leakage Current:
      105 nA max (with open thermocouple detection enabled)
      Normal Mode Rejection Ratio: 90 dB min
      Common Mode Rejection Ratio: 100 dB min
      Warm-Up Time: 30 minutes max
      Thermocouple Input: Softwareprogrammable for type J, K, T, E, R, S, B, N
      Open Thermocouple Detection: 3 sec open detection time (max)
      CJC Sensor Accuracy: -0.75 to 0.5°C max (15 to 35°C);
      -1.5 to 1.25°C max (0 to 55°C)
      Pt100 RTD Input: 2-, 3- or 4-wire DIN43760, α = 0.00385,
      SAMA, α = 0.003911, ITS-90/IEC751, α =0.0038505
      (3- or 4-wire connectionstake up 2 differential channels)
      Thermistor Input: 2-, 3- or 4-wire standard 2252 through 30,000 Ω
      (3- or 4-wire connections take up 2 differential channels)
      Semiconductor Sensor: TMP36 or equivalent

      DIGITAL I/O
      Number of Digital I/O Channels:       8
      Type: CMOS
      Configuration: Each DIO bit can be independently configured for inputor output.
      Switch selectable output voltages of 5V or 3.3V.
      Power onreset is input mode unless bit is configured for alarm
      Pull-Up/Pull-Down Configuration: All pins are connected to 47 Ωresistors
      (user configurable for pull-up mode to 5V or pulldownmode).
      Digital I/O Transfer Rate (Software Paced): Digital input;
      50 port reads or single bit reads persecond (typical):
      digital output; 100 port writes or single bit writesper second (typical)
      Input High Voltage: 4.0V min, 5.5V absolute max (5V mode);
      2.64V min, 5.5V absolute max (3.3V mode)
      Input Low Voltage: 1.0V max,-0.3V absolute min (5V mode);
      0.66V max, -0.3V absolute min(3.3V mode)
      Output High Voltage: 4.3V min(5V mode),
      2.7V min (3.3V mode); IOH = -2.5 mA
      Output Low Voltage: 0.6V max (IOL = 2.5 mA)
      Temperature Alarms: 8 (one per digital I/O line)


      NETWORK
      Ethernet Compliance
        Device Type:      IEEE 802.3 Ethernet 10Base-T
        Device Compatibility: IEEE 802.3-2003 10 Mpbs MediaAccess Control
      Ethernet Connection
        Ethernet Type:10Base-T
        Connector:RJ-45, 8 position
        Cable: CAT-5 shielded, unshielded twisted pair
        Length: 100 m (328') max
        MAC Address:00:12:71:Cx:xx:xx where xxxxx is the device’s serial number
      Network Factory Default Settings
        IP Address:192.168.0.101
        Subnet Mask:255.255.255.0
        Gateway:192.168.0.1
        DHCP Setting:Enabled
        User Name: “webtemp”
        Password:“omega”
        Web Server:Enabled
      Network Protocols
        Protocols Implemented:IP, ARP, ICMP, DHCP, UDP, TCP,NBNS, HTTP
        UDP Messaging Protocol:UDP port 54211
        TCP Downloading Protocol:TCP port 54267
        HTTP 1.0 Alternate Port: TCPport 49152-65535 (not including 54267)
        Network Name: “webtemp_xxxxx”, where xxxxx isthe device’s serial number
        Max Number of Simultaneous HTTP Connections: 3
        Max Number of Non-HTTP TCP Sockets: 5
      Network Security
        Security Implementation:       IP address based session manager with username/password
         login for configuration and controltransactions (data is not secured)
        Session Timeout: 5 min with no activity
        Username/Password Encryption: Base64 (the default web page does not support
        encryption if Javascript is disabled in the web browser)
        Vulnerabilities: Denial of service attacks, username/passwordspoofing,
        script probing and simple decryption

      GENERAL
      Memory      : EEPROM (512 bytes forsensor configuration);
      FLASH (2 MBfor device configuration and websitestorage)
      Microcontroller: One 8-bit and one16-bit RISC high-performance microcontroller
      Power Supply Voltage (Supplied by Included External Power Supply): 5 Vdc ±5%
      Power Supply Current (Supplied by Included External Power Supply): 440 mA max
      User Output Voltage (5V):4.65V min to 5.25V max (10 mA max)
      Excitation Current for Resistance Sensors: RTD, 210 uA ±5% typ; thermistor, 10 uA ±5% typ
      Dimensions:127 L x 89 W x 36 mm D(5.0 x 3.5 x 1.4")
      Input Connections: Screw terminal blocks (accept 16 to 30 AWG wire)
      Operating Temperature: 0 to 55°C(32 to 131°F), 0 to 90% RH non-condensing
      Storage Temperature: -40 to 85°C (-40 to 185°F)
      Weight: 160 g (5.6 oz)










































































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