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FL 4MA -- Flow at 4 mA
FL 20MA -- Flow at 20 mA
The FL 4MA and FL 20MA entries are used to set the span of the 4-20 mA analog
output and the frequency output. These entries are volumetric rate units that are
equal to the volumetric units configured as RATE UNT and RATE INT.
This setting also sets the span for the frequency output. At the minimum flow rate,
the output frequency is 0 Hz. At the maximum flow rate, the output frequency is
1000 Hz.
The 4-20 mA output is factory calibrated and should not require adjustment. If small
adjustments to the DAC (Digital to Analog Converter) are needed, use the CAL 4mA
and CAL 20 MA.
CAL 4 MA -- 4 mA DAC Calibration Entry (Value)
CAL 20 MA-- 20 mA DAC Calibration Entry (Value)
The CAL 4MA and CAL 20 MA entries allow fine adjustments to be made to the "zero"
and full scale of the 4-20 mA output. To adjust the outputs, an ammeter or reliable
reference connection to the 4-20 mA output must be present.
Note: Calibration of the 20 mA setting is conducted much the same way as the 4 mA adjustments.
Note: The CAL 4MA and CAL 20MA entries should not be used in an attempt to set the 4-20 mA
range. Utilize FL 4MA and FL 20MA, detailed above, for this purpose.
4 mA Calibration Procedure:
1) Disconnect one side of the current loop and connect the ammeter in series
(disconnect either wire at the terminals labeled 4-20 mA Out or Signal Gnd).
2) Using the arrow keys, increase the numerical value to increase the current
in the loop to 4 mA. Decrease the value to decrease the current in the loop to
4 mA. Typical values range between 40-80 counts.
3) Reconnect the 4-20 mA output circuitry as required.
20 mA Calibration Procedure:
1) Disconnect one side of the current loop and connect the ammeter in series
(disconnect either wire at the terminals labeled 4-20 mA Out or Signal Gnd).
2) Using the arrow keys, increase the numerical value to increase the current
in the loop to 20 mA. Decrease the value to decrease the current in the loop to
20 mA. Typical values range between 3700-3900 counts.
3) Reconnect the 4-20 mA output circuitry as required.
2. 4-20 TST -- 4-20 mA Output Test (Value)
Allows a simulated flow value to be sent from the 4-20 mA output. Increment this
value to transmit the indicated current value.
Z205739-0D
PAGE 23
Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Aerospond, Veris, and the Veris 'V' logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.
FSRxxxx SERIES
©2013 Veris Industries
INSTALLATION GUIDE
CH2 Menu -- Channel 2 Menu
The CH2 menu is used to configure model specific I/O options. The non-BTU meter
presents a different set of parameters than the BTU meter.
Note: Choose the correct menu type for the meter in use. The software does not prohibit selecting
options pertaining only to the non-BTU meter when a BTU meter is present, and vice versa.
However, the outputs or meter readings will be unpredictable.
1. Channel 2 Options
CH2 Menu -- Channel 2 I/O Options (Choice): RTD -- Input Values for BTU Meters
(Values), CONTROL/HZ -- Output Options for non-BTU Meters
2. BTU 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 Ω 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
meter. Field replacement of RTDs is possible using the keypad or the software utility.
If the RTDs were ordered from the manufacturer, they arrive with calibration values
to load into the meter.
New, non-calibrated RTDs require field calibration using an ice bath and boiling water
to derive calibration values. This procedure is outlined in the Appendix of this manual.
Available RTD styles:
• Surface mount RTD temperature sensors: set of two, 130°C max.
temperature (20 feet of cable, other lengths available)
• Insertion RTD temperature sensors: single, 3 inch (75 mm), 0.25 inch O.D.
(other lengths available)
05131
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