Dynasonics TFX Ultra Transit Time Flow Meters - Manual (Page 48)

Energy Meter Options
RTD — Calibration Values (Value)
RTD1 A Calibration Value for RTD1 A
RTD1 B Calibration Value for RTD1 B
RTD2 A Calibration Value for RTD2 A
RTD2 B Calibration Value for RTD2 B
Inputs from two 1000 Ohm platinum RTD temperature sensors allow measurements of heating or cooling usage.
The values used to calibrate the RTD temperature sensors are derived in the laboratory and are specific to the RTD and to the
electronic circuit it is connected to. The RTDs on new units come with the calibration values already entered into the energy
meter and should not need to be changed.
Field replacement of RTDs is possible thru the use of the keypad or the software utility. If the RTDs were ordered from the
manufacturer, they will come with calibration values that need to be loaded into the energy meter.
New, non-calibrated RTDs will need to be field calibrated using an ice bath and boiling water to derive calibration values. This
procedure is outlined in the APPENDIX of this manual.
Surface Mount Rtds
D010-3000-301 set of two, 200° C maximum temperature (20 feet of cable)
Insertion Rtds
D010-3000-200 single, 3 inch (75 mm), 0.25 inch OD
D010-3000-203 single, 6 inch (150 mm), 0.25 inch OD
Table 9: RTDs
FLOW ONLY METER OPTIONS
Two independent open collector transistor outputs are included with the flow only model. Each output can be configured
independently for one of the following:
CONTROL/HZ — Control Options (Choice)
Select either Control 1 or Control 2 to program.
TOTALIZE — Totalizer Output Options
TOT MULT —Totalizer Multiplier (Value)
Sets the multiplier value applied to the totalizing pulse output.
FLOW — Flow Alarm Output Options
FLOW — Flow Alarm Values
ON (Value)
Sets value at which the alarm output will turn ON.
OFF (Value)
Sets value at which the alarm output will turn OFF.
SIG STR — Signal Strength Alarm Options
SIG STR — Signal Strength Alarm Values
ON (Value)
Sets value at which the alarm output will turn ON.
OFF (Value)
Sets value at which the alarm output will turn OFF.
ERRORS
Alarm outputs on any error condition. See
Error Codes at the end of this manual.
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Page 48 March 2014