But if you work for a medium-to-large company and you have lots of equipment and sites that require temperature monitoring, you'll be much better served selecting a larger RTU like the NetGuardian 832A. With 32 digital inputs and 8 analog inputs, it has the capability to monitor as many sensors as are required at all but the largest installations.
To help you better understand how temperature monitoring systems work, let's take a look at a project from DPS Telecom's recent history.
One day recently, Evan called in looking for a small RTU. He had 1-4 sites that needed to be covered by a temperature monitoring system, among other types of monitoring. Evan needed about 8 discrete alarms points, 3 control relays, and 1 serial port for COM port redirect. He also wanted 1-4 generic analog inputs (for collecting sensor data from temperature sensors and other sensors).
A big issue for Evan was windshield time, the hours that technicians spend traveling to and from remote sites. For Evan's company, some sites were up to two hours away from the central office. This puts wear and tear on vehicles and costs a lot of money for gas, not to mention the highly paid technicians who are logging hours for driving around.
Evan had a couple of sites that were solar powered with generators that run when the panels do not create enough electricity. The generators had problems when they had to kick on and off a couple times a day.
|This remote temperature sensor has a visible meter if you happen to be at the site, but it also transmits temperature data back to you.|
If the generator did not start, they would have the inverter cut out so the batteries were not drained to point of damage. This would cause the site to go down.
We received this email from Evan, describing more of his need for a remote monitoring system that included a temperature monitoring system:
"This is a remote communications site with a microwave link and Ethernet connectivity to our own intranet. Likely power the unit off 110 VAC, though we might prefer to put in a DC-DC converter off the +48 VDC bank unless your unit will run off as high as +60 VDC. Site is solar powered with 4 Outback charge controllers, 4,000 Ah of batteries, 15 KVA of Outback inverters and a 30 KVA generator.
We would want to monitor:
Control via relays:
Nice to have:
I hope this introduction to temperature monitoring systems has been useful for you.
If you want to know more about remote monitoring and start planning your temperature monitoring system, give us a call and one of our experts can help you make informed decisions.
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