ALPHASENSE USER MANUAL Page 1 4 20mA Transmitter for Oxygen Sensors 072 0126 Issue 2 1 INTRODUCTION The Transmitter PCB includes circuitry for an electrochemical oxygen sensor to convert the pA output signal from the sensor to a 2 wire 4 20mA signal The transmitter board is shipped with four mounting pillars and hardware that may be used if required Alphasense 4 20 mA transmitters offer convenience and easy maintenance for gas sensors e Transmitters are shipped calib
ALPHASENSE USER MANUAL Toxic Sensor Evaluation Board 072 0128 Issue 4 Introduction This Evaluation Board accepts Alphasense A B and D Series toxic gas sensors The purposes of this evaluation board is to e help first time users of toxic gas sensors to evaluate Alphasense sensors e allow electronics designers to optimise potentiostat circuits by swapping op amps and changing load resistor e let engineers study the effects of the bias voltage to optimis
Apollo ALPHASENSE USER MANUAL Page 1 LED CO NDIR Sensor Evaluation Kit 072 0139 Issue 1 Evaluation Kit comprises 1 single Channel NDIR CO2 sensor and support PCB 1 Evaluation board The single channel sensor is a complete gas sensor for COs requiring only the addition of a display computer connection and a regulated 5VDC power supply Operation The unit can be powered from a PP3 9V battery or from an external power supply The sensor will drift if the supply voltage
ALPHASENSE ALPHASENSE USER MANUAL 4 20mA Digital Transmitter for Toxic Sensors 1 INTRODUCTION Figure 1 Block Diagram 4 20 mA Transmitter POTENTIOSTAT Q GAS SENSOR BIAS K gt BUFFER 4 20 mA LOOP MICRO PLUS DIGITAL M D COMMUNICATION Y ADC Kk PINK TEMPERATURE SENSOR K gt The Transmitter PCB includes circuitry for a 3 electrode toxic sensor to convert the pA output signal from the sensor to a 2 wire 4 20mA s
ALPHASENSE USER MANUAL Page 1 4 20mA Transmitter for Toxic Sensors UMTOX 1 Issue 4 1 INTRODUCTION The Transmitter PCB includes circuitry for a three electrode toxic sensor to convert the pA output signal from the sensor to a 2 wire 4 20mA signal The transmitter board includes 4 mounting pillars that may be removed if not required Alphasense 4 20 mA transmitters offer convenience and easy maintenance for toxic sensors e Transmitters are shipped calibrated for immedia