- My sensors are showing up as unplugged, what does this mean?
All the sensors are connected to a common serial bus. If one sensor goes down, they may all go down if the bad sensor `jams` the bus or refuses to release it.
EM interference with the 1-wire signals could also be the cause. Check to see if the sensor cables are routed close to something that creates a lot of EM interference such as a generator, a large motor, or a large backup battery charger. Another source of interference is sensor wiring that runs parallel to the main power cables for any high current equipment such as an arc-welder, air compressor, or an HVAC unit. Try re-routing the sensor wiring away from these sensors to reduce interference. Another option is to attach a snap-on ferrite choke to the cable.
If the suggestions above don''t help then one of the sensors could be dead. Try disconnecting all sensors from the unit, then reconnecting them one at a time until you find the one that causes the problem. Once you have isolated the faulty sensor, disconnect it, and the other sensors should work normally.
- How do I connect wires to the Analogue Input ports on my Climate Monitor?
- Each terminal has an upper and lower opening. The wire inserts into the larger, bottom opening. The top one is used to open a spring-loaded jaw that holds the wire in place. To insert the wire, strip at least 1/2` of insulation from the wire ends. Insert a small screwdriver into the upper opening and pry it upwards (to push the blade downwards). The lower jaw should open and you can insert the wire. Remove the screwdriver to allow the jaws to close and grip the wire. N.B The negative ground signal should be connected to the `C` terminal. Positive signal voltage should be connected to a numbered terminal. If the polarity is wrong, it could damage the analogue input ports.