The Model: VP-TX100-SS

The VP-TX-100-SS is the inexpensive alternative for gas detection and environment monitoring. The combination of analog 4-20 mA output and the  RS-485 digital port makes this unit the ideal choice to connect to analog controllers and digital PLC’s. The wide choice of Solid State Gas Sensors provides accurate level readings with a life span of up to 7 years under normal applications.

The on board temperature sensor and optional remote temperature sensor can be read directly from the RS-485 port or with the LCD display.

The user interface consists of a Status LED, three pushbuttons, an audible and a 2 line x 8 character backlit LCD. The Status LED indicates OK, Low, Mid, High and Fault Alarms. The three pushbuttons and LCD provide a convenient calibration method. There are NO potentiometers, all calibration, sensor selection and setup is performed digitally. All variables are stored in the processor’s flash memory.

Sensors are NOT Included.

Features:

• 5mm Barrel Plug and Terminal Block
• Solid State Sensor Input
• TGS-826 – Ammonia Gas (NH3)
• TGS-832 – Freon (R-134a)
• TGS-813 – Methane, Propane (CH4, C3H8)
• TGS-822 (MQ3) – Carbon Monoxide, Alcohol (CO, ALC)
• On-Board Temperature sensor for Sensor Compensation
• Remote Temperature Sensor Input (10K Therrmistor)
• 4-20 mA Output, 1000 Ohm Drive at 24 VDC Power Input
• Signal Strength LED
• RS-485 Output, MODBUS RTU Protocol
• Selectable 9600 or 19.2K Baud
• Rx and Tx LEDs, RJ45 Jack
• Flash Microprocessor (PIC18F Series) for Program Variable Storage and Digital Calibration
• LCD Display 2 Line x 8 Character
• Status Alarm LED, OK, Low, Mid, High, Fault Alarm
• Three pushbuttons, ENTER, UP, DOWN
• Audible