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
System Configuration
Features
- 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.
Specifications
| 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) |
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| 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.) |
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| 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 Comsuption*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) |
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| Weight | CDS-7+CDP-7：Approx. 1.3kg Other sensors：Approx. 1.2kg |
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*1 Under identical conditions.
*2 Excluding piping length nad 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
|
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|
B2H6
|
500ppb
|
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|
AsH3
|
250ppb
|
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|
H2Se
|
250ppb
|
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|
Si2H6
|
25ppm
|
||
|
SiH2Cl2
|
25ppm
|
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|
GeH4
|
1ppm
|
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|
NH3
|
100ppm
|
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|
HF
|
10ppm
|
||
|
PF3
|
10ppm
|
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|
HCl
|
5 / 25ppm
|
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|
HBr
|
10ppm
|
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|
F2
|
5ppm
|
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|
Cl2
|
5ppm
|
||
|
ClF3
|
1ppm
|
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|
O3
|
1ppm
|
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|
CO
|
250ppm
|
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|
H2S
|
50ppm
|
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|
NF3
|
100ppm
|
Electrochemical
with pyrolyzer |
|
|
CCl4
|
100ppm
|
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|
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
*Some types are excluded. Please contact us for farther information.
SEMI (Semiconductor Equipment and Material Standard)
