Owner manual

Specific Heat Capacity BTU/lb °F
Temperature Ethylene Glycol Solution (% by Volume)
° F ° C 25 30 40 50 60 65 100
–40 –40 n/a n/a n/a n/a 0.68 0.70 n/a
0 –17.8 n/a n/a 0.83 0.78 0.72 0.70 0.54
40 4.4 0.91 0.89 0.845 0.80 0.75 0.72 0.56
80 26.7 0.92 0.90 0.86 0.82 0.77 0.74 0.59
120 84.9 0.93 0.92 0.88 0.83 0.79 0.77 0.61
160 71.1 0.94 0.93 0.89 0.85 0.81 0.79 0.64
200 93.3 0.95 0.94 0.91 0.87 0.83 0.81 0.66
240 115.6 n/a n/a n/a n/a n/a 0.83 0.69
Table 7: Specific heat capacity values for ethylene glycol/water
Transducer Spacing
XDC SPAC — Transducer Spacing Calculation (Value)
ENGLSH (Inches)
METRIC (Millimeters)
OTE:N This value is calculated by the firmware after all pipe parameters have been entered. The spacing value only pertains
to DTTN, DTTL, and DTTH transducer sets.
This value represents the one-dimensional linear measurement between the transducers (the upstream/downstream
measurement that runs parallel to the pipe). This value is in inches if ENGLSH was selected as UNITS; in millimeters if METRIC
was selected. This measurement is taken between the lines which are scribed into the side of the transducer blocks.
If the transducers are being mounted using the transducer track assembly, a measuring scale is etched into the track. Place
one transducer at 0 and the other at the appropriate measurement.
Rate Units
RATE UNT — Engineering Units for Flow Rate (Choice)
Gallons Gallons Pounds LB
Liters Liters Kilograms KG
Millions of Gallons MGal British Thermal Units BTU
Cubic Feet Cubic Ft Thousands of BTUs MBTU
Cubic Meters Cubic Me Millions of BTUs MMBTU
Acre Feet Acre Ft Tons TON
Oil Barrels Oil Barr [42 Gallons] Kilojoule kJ
Liquid Barrels Liq Barr [31.5 Gallons] Kilowatt kW
Feet Feet Megawatt MW
Meters Meters
Select a desired engineering unit for flow rate measurements.
Rate Interval
RATE INT — Time Interval for Flow Rate (Choice)
SEC Seconds
MIN Minutes
HOUR Hours
DAY Days
Select a desired engineering unit for flow rate measurements.
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Page 44 March 2014