Semiconductor Gas Detector PS-7-M

Model
PS-7-M
Target Gas
Combustible gases, Toxic gas, Oxygen
Detection Principle
Electrochemical cell, Hot wire semiconductor, Catalytic, Galvanic cell
Dimensions
CDS-7+CDP-7 : W62 x H172 x D157 mm (excluding protrusions) Other sensors : W62 x H142 x D157 mm (excluding protrusions)

Various gases detected by changing sensor units significant reduction in maintenance work

  • PoE eases installation work
  • Large LCD display
  • Simple replacement of sensor unit and sampling unit
  • With prevention function for inserting incorrect sensor
  • Both Ethernet and RS-485 are available*

*The RS-485 function used in this product has not been verified for CE-marking compliance.

Model PS-7-M
Detection Principle Electrochemical cell, Hot wire semiconductor, Catalytic or Galvanic cell
Target gas Combustible gas, Toxic gas, Oxygen
Sampling Method Extractive
Detection Range As per delivery specifications
Alarm Set Value As per delivery specifications
Accuracy*1 Combustible gas: ±25%  Toxis gas: ±30%  Oxygen: ±1vol%
Response Time*2 Combustible gas: (T60)≤30 sec.  Toxis gas: (T60)≤60 sec.  Oxygen: Within 5s to reach 18vol% under condition of 10vol%
Alarm Indication LED Display
Gas alarm Red LED flashes (2 stages) “ALARM1/ALARM2”
Sampling filter notification display Yellow LED flashes Flow display is rotating at low speed
Flow rate reduction alarm Yellow LED flashes “FLOW” and flow display stops rotating
Sensor trouble Yellow LED flashes “SENS.”
Sensor misinsertion alarm Yellow LED flashes “SENS.”
Pyrolysis furnace disconnection alarm Yellow LED flashes “CONV.”
External Output*3 ・Digital signal Ethernet 100base-Tx(Modbus/TCP)
・Digital signal RS-485(Modbus/RTU)
・Gas concentration analog signal 4-20mADC
・Gas alarm contact (1st and 2nd stages) N.O. dry contact (sane common), self-resetting
Rated load: 0.5A at 30VDC (resistance load)
・Trouble alarm contact open collector output (N/C)/Automatic recovery
Rated load: 30mA at 30VDC (resistance load)
(Low flow rate, sensor trouble, pyrolyzer disconnection, power supply disconnection, fuse disconnection: OFF)
Approvals SENI, CE*4
Applicable cable ・Digital signal Ethernet100base-Tx and PoE : LAN cable, Cat. 5e or higher
・RS-485 digital signal, Gas alarm contacts, Gas concentration analog output and Trouble alarm open collector: CVV-S cable 1.25㎟ (2-core shielded twisted pair cable is needed for RS-485.)
Operating
Temperature/Humidity*5
Temperature: 0 to +40 °C  Humidity: 30 to 85 %RH
Power Source 24 VDC ±10%  PoE(Power over Ethernet, IEEE 802.3af/ANSI X3.263)
Power Consumption*6 LED Display
CDS-7 COS-7 CHS-7 CDS-7+CDP-7
MAX MAX MAX MAX
24VDC,Gas Concentration Analog Signal Use 4.7W 4.7W 5.7W 8.0W
24VDC, Ethernet,
Gas concentration analog signal not used
4.1W 4.1W 5.0W 7.3W
24VDC, RS-485,
Gas concentration analog signal not used
4.6W 4.6W 5.5W 7.8W
PoE, Ethernet,
Gas concentration analog signal not used
4.4W 4.4W 5.4W 8.3W
Dimensions CDS-7+CDP-7:W62xH172xD157mm(excluding protrusions)
Other sensors:W62xH142xD157mm(excluding protrusions)
Weight CDS-7+CDP-7:Approx. 1.3kg
Other sensors:Approx. 1.2kg

*1 Under identical conditions.

*2 Excluding piping length and communication time.

*3 Either Ethernet or RS-485 can be used.

*4 The RS-485 function used in this product has not been verified for CE-marking compliance.

*5 No sudden temperature or humidity changes. No condensation.

*6 When analog output and digital output are used at the same time. The above specifications may be changed without prior notice for improvement.

List of detectable gases (sensor unit)

Gases
Full Scale
Detection Principle
Model No.
SiH4
5 / 25ppm
Electrochemical
CDS-7
PH3
1ppm
B2H6
500ppb
AsH3
250ppb
H2Se
250ppb
Si2H6
25ppm
SiH2Cl2
25ppm
GeH4
1ppm
NH3
100ppm
HF
10ppm
PF3
10ppm
HCl
5 / 25ppm
HBr
10ppm
F2
5ppm
Cl2
5ppm
ClF3
1ppm
O3
1ppm
CO
250ppm
H2S
50ppm
NF3
100ppm
Electrochemical
with pyrolyzer
CCl4
100ppm
H2
500 / 1000ppm
Hot wire semiconductor
CHS-7
O2
25vol%
Galvanic cell
COS-7

*Please contact your representative for gases other than those listed.

Approvals

CE_logo     *Some types are excluded. Please contact us for farther information.

 

SEMI (Semiconductor Equipment and Material Standard)

Connectable Alarm Units

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