- 2 -
1-2. Overview
Thank you for purchasing the New Cosmos PS-7-M series extractive pump gas detector. Prior
to use, please read this instruction manual to ensure safe and reliable operation.
This unit supports RS-485 and Ethernet communications. For information on Modbus interface
communication specs, please read the PS-7-M communication specifications guide.
This unit detects semiconductor process gas or combustible gas (e.g. hydrogen) that may be
present in a cylinder cabinet, exhaust duct, or industrial facility work environment (e.g.
semiconductor manufacturing plant), and relays the gas concentration value as an analog signal
and a RS-485 or Ethernet signal to an external device while simultaneously displaying the gas
concentration value on its display.
If gas concentrations reach a preset level, the red ALARM LED will start flashing and activate
relay contacts, thus monitoring the concentration of a leaked target gas.
Sensor and sampling units can be easily replaced without tools. After a sensor/sampling unit
replacement, on-site calibration using a prepared gas is not necessary.
Periodic maintenance is essential to maintain the reliability of your detector. Perform periodic
maintenance in accordance with the instructions given in this manual.
PS-7-M series gas detectors are divided into three models according to the sensor unit type and
with/without a pyrolyzer. For sensor selection, please contact New Cosmos or its authorized
representative.
Sensor unit (sold separately)
Model
Toxic gas sensor unit (CDS-7)
PS-7-M-01
Combustible gas sensor unit (CHS-7)
Oxygen (COS-7)
PS-7-M-02
Toxic gas sensor unit (CDS-7) with pyrolyzer (CDP-7)
PS-7-M-03
This product is CE-marked, but its RS-485 communication function is outside the scope of the CE
marking.
Modbus® is a registered trademark owned by Modicon Inc. (Schneider Automation international).
Symbols Used in this Instruction Manual
This manual uses Danger, Warning, Caution and Note symbols to draw attention to procedures,
materials, methods, and processes, which require particular attention.
DANGER
Indicates an imminently hazardous situation that can result in death
or serious injury.
WARNING
Indicates a potentially hazardous situation that may result in death
or serious injury.
CAUTION
Indicates a hazardous situation that may result in minor injury or
property damage.
NOTE
Provides information on product handling.
