12
Display Units
– The PIM-530 can be configured to display measurement information in either Standard
(Temperature = ˚F, Distance = Feet) or Metric units (Temperature = ˚C, Distance = Meters). Select a unit type
by entering the setup menu and selecting the “4: DISPLAY UNITS” menu item and press the “OK” button.
The units selection screen will be displayed.
Using the Up/Down navigation buttons select the desired units from the drop down list. The currently select-
ed type is followed by the “>” character. Once your selection is made press the “OK” button and you will be
returned to the main setup menu. Choose the “1: EXIT” menu item and press “OK” to return to the status
display.
Alarm Point Location (APL) Setup
– The PIM-530 features an integrated Alarm Point Location Meter
(APL) which will identify the distance from the beginning of a detector run to the shorted portion of the
detector. Field calibration of the Alarm Point Location reading increases accuracy and provides the user a
means to compensate for changes introduced by addition of extension cable and also reading variations due to
ambient temperature.
Before calibrating the Alarm Point Location feature please follow these guidelines:
1. Calibration should be performed at the expected nominal ambient temperature for the installed
detector. For example, refrigerated storage installations should be calibrated after cool down.
2. To perform a calibration you must have access to the connections at the beginning of the detector
run and the end of the detector run.
3. All shorts placed in the detector loop during calibration should be created with a low resistance
jumper wire screwed directly under the junction terminals to ensure a true short. Using clip leads or
pressing jumpers across terminations does not insure a true short and can affect calibration accuracy.
This method is the suggested best practice for shorting the detector loop and should be used to
insure the best results.
Before starting the APL Calibration routine the detection loop must be installed and confirmed to be in a
NORMAL standby condition. Figure 4 depicts a typical Class B field wiring arrangement. Figure 4A depicts a
typical Class A field wiring arrangement. The procedure is the same for both Class B and A wiring configura-
tions unless otherwise noted. Where feed wire is not utilized shorts should be placed across the detector termi-
nations on the PIM-530 inputs.
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Menu Screen
Units Selection Screen
