Dwyer PSX2 - Manual (Page 177)

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Total value display function: Display of forward or reverse total (reverse is displayed as minus)
Numeric value: 10 digits (decimal point is corresponding to 1 digit)
Unit: Metric/English system selectable
Metric system
Flow rate total: mL, L, m
3 , km 3 , Mm 3 , mBBL, BBL, kBBL
English system
Flow rate total: gal, kgal, ft
3 , kft 3 , Mft 3 , mBBL, BBL, kBBL, ACRE-ft
Consumed heat quantity (calorie) display function:
Display of consumed heating medium
Metric system
Heat fl ow: MJ/h, GJ/h
Total heat quantity: MJ, GJ
English system
Heat fl ow: MJ/h, GJ/h, BTU/h, kBTU/h, MBTU/h
Total heat quantity:
MJ, GJ, BTU, kBTU, MBTU
Computation function of consumed heat quantity (calorie):
This function calculates the heat quantity received and sent with liquid (water) in cooling
and heating.
Heat source Heat
exchanger
Converter
Converter
Temperature display function:
Fluid temperature be displayed by current input from temperature transmitter.
Metric system
Temperature unit: °C or K
English system
Temperature unit: F or K
Site data storage function: Max. 32 locations (sites) data (pipe size, material, fl uid type and etc) can be stored into
built-in non-volatile memory.
Damping: 0 to 100sec (every 0.1sec) confi gurable for analog output and velocity/fl ow rate display
Low fl ow cut: Equivalent to 0 to 5m/s
Output setting function: Current output scaling, output type, burnout setting and calibration
Serial communication function:
Instantaneous velocity, instantaneous fl ow rate, total value, heat fl ow, error information,
received waveform, analog input, velocity profi le data, logger data, etc. may be down-
loaded to personal computer.
Logger function: Instantaneous velocity, instantaneous fl ow rate, total value, heat fl ow, error information,
received waveform, analog input, velocity profi le date can be saved in a SD memory
card.
Waveform display function: Bi-directional received waveforms may be displayed.
Graph display function:
Flow rate trend graph may be displayed.
Printing function (option): Hard copy output of a screen
Periodic printing (type: text, graph)
Logger date (type: text, graph)
Flow velocity profi le measurement (option):
Flow velocity profi le may be observed in real time using the exclusive detector (option).
Bulletin F-9-PUX2
Consumed heat quantity
q = K · Q · (T1–T2)
K : heat quantity (calorie)
conversion factor(For heating K = 4.123,
For cooling = 4.186
Detector (PSX2)
Q: Flow rate of the fluid T2: Fluid temperature (out)
T1: Fluid temperature (in)
Temperature sensor
Temperature sensor
PUX2