Peninsula Engineering Solutions RMAS-120, Руководство по эксплуатации

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30 Chapter 3 Installation Instructions
The formula for calculating temperature from the voltage signal is as follows:
Temperature (° C) = [VDC (at test point) - 2] x 20
Example :
Temperature (° C) = (1.1 V - 2) x 20
Temperature = -0.9 x 20
Temperature = -18° C
To install the Transducer Assembly:
1. Remove the three lugs from the Transducer Assembly.
2. Crimp on three wires from TB1 marked as BATT XDUCER (A, B, C).
3. Insert the lugs into their mates on the Transducer Assembly as marked A, B,
and C.
4. Place the Transducer Assembly between the batteries and secure with cable
ties or insulating wedges. A location near the middle of the battery set or
stack is recommended for best results.
3.3.7 RF Low Power Alarm Setting
The transmitter assembly can monitor RF power level of up to eight frequency
channels, depending on the system ordered. Each RF Power level is brought
from the amplifier into the transmitter assembly via a coaxial cable.
For each frequency:
1. Set the output power of the radio channel of the desired frequency to the level
considered to be an alarm condition.
2. Measure the DC voltage at the output connector marked DC MON of the
amplifier module. At this point, the coaxial cable is connected to the
transmitter marked RF PWR MON IN. (Normally, the transmitter is shipped
with the alarm threshold set to 5 dB below nominal RF level.)
3. Multiply this value by 10 and subtract the result from 5 Volts. For example, if
the PWR F1 TEST is 50 mV then:
5 V - (50 mV x 10) = 4.50 V
4. Place the voltmeter on the test point for that frequency, marked PWR Fx
TEST, and measure the DC voltage level.
5. Using a small, flat-blade screw driver, adjust the potentiometer labeled ADJ
for that frequency to the level calculated in Step 3. The corresponding LED
should turn ON.
6. If possible, raise the output power to the normal level, and then reduce it to
the alarm level. Carefully adjust the ADJ voltage to the point where the LED
lights up for the particular frequency
—
see Table 3.G .