The NetGuardian 8A - High Analog Density On A Small RTU
Analog inputs provide valuable information about your network. Rather than providing binary inputs like discrete alarms (door open/closed, power active/fail, etc.), analogs provide information on a scale. Temperature ("83.6 degrees"), voltages ("-47.89 VDC"), fuel levels ("16% remaining") and other metrics that can have more than two states are best monitored by analog inputs for the most accurate readings.
The new NetGuardian 8A features an analog heavy design.
The trouble is, if you want an RTU that has lots of analogs, you usually have to pay for a lot of discretes and controls as well. That's a waste at sites where your primary need is for analogs. You end up overpaying for your RTU and only using a few of its features.
You need a unit that is designed with your network in mind: an RTU that is focused more on analog inputs than discretes alarms or controls relays. That gives you the capacity you need to monitor your environmentals, propane tanks, or voltages - without forcing you to buy more RTU than you need.
That's where the NetGuardian 8A by DPS Telecom comes in. This small RTU offers 8 analogs, which are terminated by RJ45 connectors, reducing the amount of troublesome wiring needed to monitor your environmentals. Each analog has 4 user-configurable thresholds (Major Under, Minor Under, Minor Over, and Major), giving you an accurate picture of the conditions at your remote sites.
RJ45 ports eliminate wiring headaches.
The NetGuardian 8A also has 4 opto-isolated discrete alarms (TTL only) and 2 Form C relays. These are also terminated by RJ45 connectors, making it easier than ever to connect to your RTU. This way, you can monitor the binary conditions at your site and also have the capability to remotely control a piece of equipment.
The NetGuardian 8A comes standard with 1 internal temperature sensor and 1-RJ11 plug, allowing up to 16 D-Wire sensors to be daisy-chained together. The RS232 "reach through" serial port will allow you to configure devices connected to this unit using the easy-to-use web browser interface.
Don't overpay for features you won't use just to get the analog capacity you need.
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Full Specifications
The new NetGuardian 8A from DPS Telecom offers a compact design, high analog capacity and a few controls and discretes. It comes with 1 internal temp sensor and a D-Wire sensor input that allows you to daisy-chain up to 16 D-Wire sensors.
| Full Specifications | |
|---|---|
| Discrete Inputs: | 4 (opto-isolated, TTL only). |
| Analog Inputs: | 8 |
| Control Outputs: | 2 Form C relay contacts |
Max Voltage: | 60 VDC/120 VAC. |
Max Current: | 1 Amp, AC/DC. |
| Ping Targets: | 32 |
| Power Input: | Dual -24/48 VDC |
Current Draw: | 500mA @-48VDC |
Fuse: | 3/4 Amp GMT |
| Interfaces: | 10 RJ45 serial ports. 1 RJ11 Telco jack. 1 RS232 port 1 USB craft port 1 33.6K internal. |
| Protocols: | SNMPv1, v2c, and v3, DCPx, DCPf, TRIP, SNPP, SMTP, TAP, HTTP, FTP, Telnet, ICMP, RADIUS. |
| Operating Temperature: | 32 to 140 F (0 to 60 C) |
| Operating Humidity: | 0%-95% noncondensing |
| Visual Interface: | 11 LEDs |
| Audible Interface: | Front Panel Alarm speaker |
| RoHS | 5 of 6 |
| MTBF | 60 years |
| Dimensions: | 1.75"H x 17"W x 12"D (4.5 cm x 43.2 cm x 30.5 cm) |
| Weight: | 4 lbs. 3 oz. (1.9 kg) |
| Mounting: | 19" or 23" rack |
| D-Wire Sensors: | 16 |
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