TechBlog

ALARM MONITORING and CONTROLThe Tbox System is a process or module that transmits text information from a remote location to your cell phone. The modules accept four digital (contact closure) and two analog (0-10 vdc or 4-20 mA) inputs. If the condition of these inputs change, it sends you a text message. You determine the message. A text message” (Short Message Service) must be 160 characters or less. You can even have it “text” some one for certain conditions, or some one else for other conditions. You can set limits on the analog inputs. An example, if the pressure exceed a value, it will text your cell phone. Each module has its own phone card called a SIM card. This card and Service is offered by an international network provider (MVNO) which means the Tbox can text message you down the street, or anywhere in the world. The only requirement is that cell phone reception is possible.

DIGITAL INPUTSThe Tbox accepts four digital inputs. This is a contact closure with no voltage potential present. It can be an alarm contact from a temperature control, or a proximity or photo electric sensor that indicates the presence or absence of an object. It can be from a pressure switch signaling a loss of pressure. Once you determine the text you want to receive, simply label the input as “low oil pressure, Pump # 1”. Then determine if you want any relay output as a result of the fault condition. Then determine who should be texted.

ANALOG OR PROCESS INPUTSThe Tbox has 2 inputs that may be analog ( 0-10 vdc or 4-20 mA). Analog inputs can be provided by inexpensive thermistors, retransmit outputs from temperature controls or current transmitters. Through intuitive software, these can be labeled as to the name of the equipment monitored and the process sensed. It can also have specific levels placed on their value that will text an alarm. Relay outputs can be selected to transfer when the process values you choose is exceeded. ………….

ANALOG OR PROCESS INPUTSThe Tbox has 2 inputs that may be analog ( 0-10 vdc or 4-20 mA). Analog inputs can be provided by inexpensive thermistors, retransmit outputs from temperature controls or current transmitters. Through intuitive software, these can be labeled as to the name of the equipment monitored and the process sensed. It can also have specific levels placed on their value that will text an alarm. Relay outputs can be selected to transfer when the process values you choose is exceeded.

PERSONAL COMPUTER A Personal Computer (PC) is used to set up each Modules address using the RS-232/ RJ45 cable connected to the module. The labels for the equipment, what the Module is monitoring, the specific fault or process and any action you want to give to that input are all entered easily in the set up. For Process inputs, the Analog (0-10 vdc or 4-20mA) input is scaled in engineering units as well as alarm set points established. You then remove it from the computer and wire it to your equipment. It’s all set to give you a call.

An optional NEMA 4 Enclosure (with DIN mounting rail) and a power supply is available. The cover is transparent so the LED indicators are visible. The Tbox comes with RS-232 programming cable, antenna having 2.5 meters of cable and a programming CD to enter cell phone numbers and messages.