INTEGRA Metering CALEC ST III User Manual page 34

Installation
Disconnect the CALEC® ST III from the power
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supply.
Take off the front cover [}p. 20].
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Connect the antenna (0 db gain, 50 Ω imped-
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ance) to the SMA socket.
Tighten the antenna with max. 5 Nm.
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Close the front cover [}p. 20].
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Place the device at the position with the best re-
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ception.
Supply voltage.
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Analog output
CALEC® ST III can be equipped with up to four passive analogue outputs. An external power supply is re-
quired for operating purposes. The current per channel can be adjusted within a range of 0 – 20 mA or 4 –
20 mA. The following readings can be emitted as current signals:
Factor
Temperature on "hot" side
Temperature on "cold" side
Temperature on difference
Output
Flow
Mass flow
C-factor
Density
Limit-value signals
Digital output signals can be used to emit limit-value monitoring signals.
Function of one-sided limit-value monitoring (Limit1)
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If an adjustable maximum limit is exceeded or if the reading fails to reach an adjustable minimum, the out-
put signal switches over, hysteresis (0 - 10 %) and control direction are selectable as required. While the ex-
cess-reading remains in force, the meter (showing "Cnt" for "counter") calculates the total duration of the
error for inspection purposes.
Function of two-sided limit-value monitoring (Limit2)
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If an adjustable maximum limit is exceeded and if there is failure to reach an adjustable minimum, the func-
tions operate in a similar way to those of Limit1.
Alarm message
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The microprocessor monitors the temperature sensor and internal functions, and displays any resulting
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error messages. This information can also be used to generate an alarm signal via the digital outputs.
Module #1: A11/B11 (Channel #1)
Module #1: A12/B12 (Channel #2)
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Module #2
Factory settings:
Frequency: 868 MHz
Gain: 0 db
Impedance: 50 Ω
Antenna connector: SMA connector
Display
t-hot
t-cold
t-diff
POUEr
FLOU
MAS-FLOU
C-Factor
dEnSitY
The outputs are electrically isolated.
Module #2: A21/B21 (Channel #1)
Module #2: A22/B22 (Channel #2)
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