Gas Sensor Transmitter for Figaro Series TGS and MQ Series Solid State Sensors

Gas Sensor Transmitter for Figaro Series TGS and MQ Series Solid State Sensors

Regular price $104.50 USD Sale

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, Sockets and Enclosures are sold separately. Please contact us for pricing for assembled and calibrated units at

For a complete specification and Sensor listing, please visit our main website


  • 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


TGS826 NH3 Ammonia 0 – 300 PPM 300 100 200 300
TGS832 R-134a Freon 0 – 3000 PPM 1000 1000 2000 3000
TGS822 CO Carbon Monoxide 0 – 400 PPM 100 35 50 100
ALC Ethanol 0 – 5000 PPM 1000 1000 2000 3000
TGS813 CH4 Methane 0 – 50 %LEL 20 20 30 40
C3H8 Propane 0 – 50 %LEL 20 20 30 40

NOTE: Range, Calibration Gas and Alarm Setpoints are user programmable.