Installing the transmitter - DMT152

DMT152 User Guide

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User guide
Figure 1. DMT152 installed directly to pipeline (max. 50 bar)
After selecting a suitable measurement location, install the transmitter as instructed here.
  1. Remove the yellow transport protection cap from the transmitter. Do not touch the filter with your hands.
  2. Prepare the sealing of the connection:
    1. If the transmitter has a parallel ISO G1/2" thread or UNF 3/4"-16 thread, place the sealing ring at the base of the thread. Always use a new sealing ring; do not reuse a previously installed one.
    2. If the transmitter has an NPT 1/2" thread, do not use the sealing ring. Instead, apply PTFE tape or suitable sealant paste to the thread. Follow the application instructions of the paste.
  3. Make sure that the threads on the mounting point are of the correct type, and fasten the transmitter to the measurement point. Use your hands to turn the probe until it feels tight. Do not use force at this point, and check that the sealing ring (if used) remains centered.
  4. Use a 30 mm wrench to tighten the connection to 25 Nm. If you do not have a 30 mm wrench, use a 1 3/16" wrench or an adjustable wrench.
    CAUTION Only tighten the probe from the 30 mm tightening nut. Do NOT apply force to other points in the probe body.
  5. Connect the wires of the connection cable. When using cables provided with DMT152, see Wiring and Power supply requirements.
  6. Plug in the cable to the transmitter. Be sure to use the correct connector; see Wiring.
  7. Cover the unused connector on the transmitter with the rubber plug that is attached to the transmitter.
  8. Turn on the power supply. DMT152 performs self-diagnostics at startup, and the output is frozen for several minutes. The transmitter will output an approximated reading after one minute, but accurate measurement will only be available after the startup procedure is complete.
Normal operation is typically achieved in 10 … 15 minutes. If the measurement environment changes during the startup, the startup may take up to 15 minutes.
The transmitter always performs the self-diagnostic procedure and sensor purge when starting up. Keep the transmitter continuously powered to optimize its measurement performance and availability.