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Air Monitor Corporation AMC POWER VELTRON DPT Installation, Operation & Maintenance Manual

Ultra-low range pressure & flow transmitter
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Air Monitor Corporation
116-009-70.P65 (09/18/09)
Installation, Operation,
and Maintenance Manual
VELTRON DPT
Ultra-Low Range
Pressure & Flow Transmitter
Installation, Operation & Maintenance
Air Monitor Corporation provides complete
technical support between the hours of
7 a.m. and 5 p.m. PST, M-F
Contact our Service Department
Toll Free: 1-800-AIRFLOW
or fax us at 1-707-526-2825
VELTRON DPT - IO&M Manual

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Summary of Contents for Air Monitor Corporation AMC POWER VELTRON DPT

  • Page 1 Maintenance Manual VELTRON DPT Ultra-Low Range Pressure & Flow Transmitter Installation, Operation & Maintenance Air Monitor Corporation provides complete technical support between the hours of 7 a.m. and 5 p.m. PST, M-F Contact our Service Department Toll Free: 1-800-AIRFLOW...

  • Page 3: Table Of Contents

    TRANSMITTER CALIBRATION ....................12-13 RESPANNING ..........................13 SECTION 7 – MAINTENANCE ....................... 14 SECTION 8 – TROUBLESHOOTING ..................... 15 SECTION 9 – PARTS LIST ........................16 SECTION 10 – CUSTOMER SERVICE ....................17 Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 4: Instrument Warranty

    Seller in writing of such defect within sixty (60) Air Monitor Corporation’s liability to the customer, or any days of discovery of the defect. other party for breach of warranty.

  • Page 5: Section 1 - General Information

    The resulting signal representing differential pressure or velocity pressure can be "manipulated": square rooted for velocity or flow application; scaled for units of measure and area for process output; filtered and scaled for local data display. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 6: Section 2 - Performance Specifications

    2.3 – INPUT/OUTPUT Input. Differential pressure (high and low). Output. 4-20mADC. 2.4 – POWER Power Supply. 14-40 VDC. Two wire basic configuration. Circuit Protection. Power input is reverse polarity protected. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 7: Section 3 - Features

    • Suitable for indoor and outdoor NEMA Type 4X hazardous locations. 3.7 – ENCLOSURE The VELTRON DPT transmitter is packaged in a NEMA Type 4X enclosure with standard industrial process connections. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 8: Section 4 - Installation

    • The VELTRON DPT may be mounted in any position or attitude and is not affected by any reasonable shock or vibration. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 9: Mounting

    Bracket Kit. Figure 4.1 shows how the various components are assembled, and Figure 4.2 depicts a variety of mounting orientations. Figure 4.1 CAUTION Do not rotate the electronics enclosure relative to the base. Internal signal tubing could become twisted or kinked, causing possible transducer overpressurization, voiding warranty. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)
  • Page 10 If using the Mounting Bracket Kit, Figure 4.2 depicts a variety of mounting orientations. Figure 4.2 CAUTION VELTRON DPT should not be mounted solely by the process connections or electrical conduit, which do not provide sufficient support. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 11: Process Connections

    SECTION 4 – INSTALLATION 4.4 – PROCESS CONNECTIONS The VELTRON DPT has two 1/4"-18 FPT process connections at 2-1/8" center-to-center on the bottom of the stainless steel base. Figure 4.3 Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)
  • Page 12 It is extremely important that no pressure be present in signal tubing at the time of installation, and the orientation of high and low pressure signal lines is maintained between the source and the VELTRON DPT. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 13: Power/Signal Connections

    It is recommended that wiring be 14 AWG to 22 AWG. The Power/Signal wires should be connected to the terminals labeled ± POWER INPUT in accordance with Figure 4.5. Figure 4.5 Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 14: Section 5 - Operation

    3. Remove existing resistor and install new one of increased value. Operate transmitter and observe output and display. Continue to increase or decrease the value of R9 until desired results are obtained. 4. Perform Calibration (Section 6) anytime the filter resistor is changed. Figure 5.1 Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 15: Section 6 - Calibration

    3. Remove terminal side cover and circuit side cover if unit is supplied with display. 4. Prepare test equipment as shown in Figure 6.1. 5. Turn power to VELTRON DPT on. Allow 5 minutes warm-up before proceeding. Figure 6.1 Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 16: Transmitter Calibration

    8. Repeat Steps 1 through 7 as necessary until no further adjustments are required to either zero or span. 9. Remove test equipment and replace terminal side and circuit side covers, taking care to ensure proper seal. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 17: Respanning

    Select a standard resistor nearest in value to the value calculated above. After R1 has been replaced with the appropriate value, repeat all of Section 6.3.1 to ensure proper calibration. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 18: Section 7 - Maintenance

    – Periodically inspect all wiring to the VELTRON DPT for good connections and absence of corrosion. 7.4 – CALIBRATION – VELTRON DPT should have calibration verified annually as a minimum. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 19: Section 8 - Troubleshooting

    If DMM reads correctly, replace Terminal Board. If after following the Troubleshooting steps the VELTRON DPT continues to operate improperly, contact the Service Department for further assistance (see Section 10). Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 20: Section 9 - Parts List

    • To inquire about price and available of a specific part number, please contact the Customer Service Department at: Phone – 1-707-544-2706 Fax – 707-526-2825 1-800-AIRFLOW • When contacting the Customer Service Department about parts, please have the applicable Factory Set-Up Informa- tion sheet available for reference. Air Monitor Corporation VELTRON DPT - IO&M Manual 116-009-70.P65 (09/18/09)

  • Page 21: Section 10 - Customer Service

    VELTRON DPT SECTION 10 – CUSTOMER SERVICE 10 – CUSTOMER SERVICE 10.1 – CUSTOMER SERVICE/TECHNICAL SUPPORT Air Monitor Corporation provides in-house technical support for our products: Monday through Friday 7 am to 5 pm (pst) Phone: 707-544-2706 or 1-800-AIRFLOW Fax: 707-526-2825 Additionally, on-site technical assistance is available.

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