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Protectowire CTI-220
EVENT CLEARED
Protectowire CTI-155
NORMAL
9:45AM 4/24/2020
Reset Screen Status Screen
Display Units - The CTM-530 can be confi gured to display measurement information in either US Stan-
dard (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
selected 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.
SETUP: TECH
2: RESET DETECTOR
3: DETECTOR TYPE
4: DISPLAY UNITS >
SETUP UNITS:
1: US >
2: METRIC
Menu Screen Display Units Selection Screen
Alarm Point Location (APL) Setup - The CTM-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. The illustrations in this manual depict using a plug in thermocouple terminal with a
jumper shorting the terminations. This method is the suggested best practice for shorting the
detector loop an dshould be used to insure the best results.
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