Detcon Model 700 HRT Bridge Operator’s Installation and Instruction Manual DETCON, Inc. 3200 Research Forest Dr. The Woodlands, Texas 77387 Ph.281.367.4100 | Fax 281.298.2868 www.detcon.com June 3, 2010 • Document #3468 • Revision 0.
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HRT Bridge Table of Contents 1.0 Description................................................................................................................................................ 1 2.0 Installation................................................................................................................................................ 2 2.1 Installation of HRT Bridge PCA .......................................................................................................... 2 2.
HRT Bridge This page left intentionally blank Shipping Address: 3200 A-1 Research Forest Dr., The Woodlands Texas 77381 Mailing Address: P.O. Box 8067, The Woodlands Texas 77387-8067 Phone: 888.367.4286, 281.367.4100 • Fax: 281.292.2860 • www.detcon.com • sales@detcon.
HRT Bridge 1.0 Description The HRT Bridge PCA is a bi-directional digital communication interface that provides data communication between the Model 700 sensors and HART®-enabled devices. The HART® (Highway Addressable Remote Transducer) Communication Protocol is a standard for sending and receiving digital information across analog wires between smart devices and a control host or monitoring system.
HRT Bridge 2.0 Installation The HRT Bridge PCA replaces the Transient Protection Assembly in the condulet the Model 700 sensor is attached to. The condulet and the Model 700 sensor should be mounted as prescribed in the sensor’s manual. For units that have been ordered with the HRT Bridge installed, the section on installing the HRT Bridge PCA can be skipped. 2.
HRT Bridge 3.0 Operation When power is applied to the HRT Bridge PCA with the Model 700 sensor attached, the HRT Bridge will go through a boot up sequence that will last for approximately 30 seconds. During this time, the 4-20mA line will be held at 1mA. After the boot up sequence the HRT Bridge will enter normal operation, and communication with the Host will begin. A red LED (D7) Labeled “HART” on the HRT Bridge PCA will illuminate when the PCA is communicating with the HART Host.
HRT Bridge 4.0 Operator Interface The HRT Bridge PCA provides the ability to interface with the sensor via the HART Interface. The HART interface Host can be a PC, a Laptop, or several handheld devices such as the Emerson 375 Field Communicator. Although the displays on each device may be different and the menu names may change, the information provided should be the same.
HRT Bridge Primary Variables • Concentration – the value of the gas concentration measured by the sensor. The units of measurement (ppm, ppb, or %) are shown to the right of the concentration value. This is the HART primary variable.
HRT Bridge Figure 4 Identification HART Tags • Tag – Text that is associated with the field device installation. This text can be used by the user in any way. A recommended use is a unique label that correlates to a field device label: a plant drawing, or on a control system. This variable is also used as a type of data link layer address handle. • Long Tag – Functions exactly like the Tag except the size is larger (max 32 ISO Latin 1 characters). Device Info.
HRT Bridge Figure 5 Device Status Screen • • • • • • • Field device has malfunctioned due to a hardware error or failure A reset or self test of the field device has occurred, or power has been removed and reapplied Field device has more status available PV analog channel fixed PV analog channel saturated Process applied to the non-primary variable is outside the operating limits of the field device Process applied to the primary variable is outside the operating limits of the field device 4.2.
HRT Bridge • • • • Sensor fault – The sensor cell has failed Zero Fault – the sensor drifts below –10% of full range Sensor Fault 2 – heater fault (TP-700), bridge fault (FP-700), or missing cell (DM-700). This status is not used by the IR-700 or PI-700. Sensor in Calibration – The sensor is currently being calibrated 4.2.3 HART Status The HART status section of the screen shows the status of the HART interface on the HRT Bridge PCA. Icons next to each error description indicate if an error has occurred.
HRT Bridge Figure 6 FP Configuration Setup This screen will vary depending on the type of Model 700 sensor attached to the HRT Bridge. The Range Set up will display the Model Type of the sensor, followed by the PV LRV (Primary Variable Lower Range Value) and the PV URV (Primary Variable Upper Range Value), and the Conc Units (Concentration Units), the display may also show the Sensor Range.
HRT Bridge TP • • • • • Heater Power Heater Voltage Sensor Resistance Heater Current Sensor Life Note: The values above are read when the HRT Bridge boots up and are not updated in real-time. 4.3.2 Calibration The Calibration screen displays the days since the last calibration, and the auto span level. This screen also allows the user to calibrate the sensor by performing an Auto Zero Calibration and an Auto Span Calibration.
HRT Bridge Auto Zero function is used to zero the sensor. Local ambient air can be used to zero most sensors as long as there are no traces of target or interference gases. If this cannot be confirmed, then a zero air or N2 should be used. N2 must be used for zero calibration of O2 deficiency sensors. Material Requirements: • Handheld Communicator or PC and interface for HRT Bridge. • Detcon PN 613-120000-700 Model 700 Splash Guard with integral Cal Port.
HRT Bridge factory default setting and recommendation for span gas concentration is normally 50% of range. If a span gas containing the recommended concentration is not available, other concentrations may be used as long as they fall between 5% and 100% of range. However, any alternate span gas concentration value must be set in the “Auto Span Level” field before proceeding with “Autospan cal”.
HRT Bridge NOTE 2: If the sensor fails the stability criteria, a “Stability Fault” will be declared and a “Fault Detected” message will be displayed alternately on the sensor with the current reading. The HART Sensor Status will change to reflect a Sensor Fault. NOTE 3: If the sensor fails the clearing time criteria, a “Clearing Fault” will be declared and a “Fault Detected” message will be displayed alternately on the sensor with the current reading.
HRT Bridge 9) When both the 4mA and the 20mA have been calibrated the procedure will return the HRT Bridge to automatic control. Loop Test 1) Ensure that the DVM is connected as prescribed in Figure 8: a) Disconnect the wire from the HART Connectors mA/HART position. b) Connect one end of a 100~250Ohm resistor to the mA/HART position of the HART Connector. c) Connect the positive lead of a DVM set to measure milliamps to the other end of the resistor.
HRT Bridge • • • • Message – Text that is associated with the field device. This text can be used by the user in any way. There is no specific recommended use. Date – Gregorian calendar date that is stored in the field device. This can be used by the user in any way. There is no specific recommended use. Note: This field is not updated by the HRT Bridge and does not indicate the current date.
HRT Bridge 5.0 Specifications Input Power 9 to 30VDC (Nominal 24VDC) Power Consumption (per channel) 100mA Maximum (Including Sensor) 3W Maximum (Including Sensor) Operating Temperature –40°C to +85°C Humidity: 10 to 95% Non-condensing Outputs Analog 4-20mA DC HART® Communication Protocol HART® Version 7.0 Manufacturer ID 0x6007 Device ID 0xE08B Warranty One year Five year fixed fee service policy 6.0 Warranty All warranties are FOB the Detcon factory.
HRT Bridge Appendix C Revision History Revision 0.0 0.1 0.2 Date 02/16/10 04/09/10 06/03/10 700 Sensor HRT Bridge IM Changes made Original Release. Add Approval block to Revision History Change product name to Model 700 HRT Bridge Rev. 0.
HRT Bridge This page left intentionally blank Shipping Address: 3200 A-1 Research Forest Dr., The Woodlands Texas 77381 Mailing Address: P.O. Box 8067, The Woodlands Texas 77387-8067 Phone: 888.367.4286, 281.367.4100 • Fax: 281.292.2860 • www.detcon.com • sales@detcon.com 700 Sensor HRT Bridge IM Rev.0.
