Reference, Installation, and Operations Manual

Section 3: Installation

3-9000-743 Rev S

June 2013

 

 

 

3.3.2Mounting requirements for heated or cooled pipelines

The ambient operating temperature of the Daniel Mark III electronics (i.e. Flameproof enclosure

and Intrinsically safe base enclosure) is -40oC (-40oF) to +65o C (+149o F). If the meter is installed into a pipeline which is heated or cooled outside this temperature range it is necessary to remove the electronics housing from the meter body (i.e. Spool piece acting as process fluid conduit) and mount it next to the meter body on a pipe stand or other rigid structure. Extended length transducer cables (P/N 2-3-3400-194, 15 ft. long) shall be used to connect the Daniel Mark III electronics to the transducers installed in the meter body. The process temperature must also not exceed the operating temperature range of the transducers. T-11, T-12, and T-21

transducers have an operating range from -20oC (-4oF) to +100o C (+212o F). T-22 transducers have an operating range from -50 °C to +100 °C (-58°F to 212 °F).

3.3.3Accessing the Daniel 3400 Series Ultrasonic Flow Meter components

Should you need to access the Daniel 3400 Series Ultrasonic Flow Meter electronics in the field (i.e., check or replace boards, change switch settings, or replace transducers), follow the instructions below. Also, see Section 3.5.

The transducers are installed in matched pairs. Do not split-up a transducer pair. Also, if a transducer pair is moved from one chord position to another, the transducer pair’s delay time and delta delay time configuration parameters must be properly re-configured.

Figure 3-8 Daniel Mark III Ultrasonic Gas Flow MeterUpper HousingBase Enclosure andTransducer CablesMeter Body and

Transducers

Mounting requirements for heated or cooled pipelines

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