PS-8 series single to multi channel gas detector

PS-8 - Single to Multi channel gas detector

A suction type detector for indoor use for detection of gas leaks in semiconductor factories.

Sensor units are factory calibrated and delivered to site ready for use.

Communication via 0-20mA, PoE, ModBus/TCP, ModBus-RTU.

Features

Gas detection unit for semiconductor factories.
Our proprietary hot wire semiconductor hydride sensor provides a long service life (coming soon).
Large LCD which allows for easy onsite monitoring at a glance.
PoE compatible for reduced wiring and seamless PLC connection.
Front access for easy sensor replacement.
Sub/expansion units allow for the combination of sensors based on the desired type and quantity of gas.

Gases

Detectable gases		Full Scale	Detection Principle	Model No.
Silane	SiH4	5 / 25ppm	Electrochemical	CDS-7
Phosphine	PH3	1ppm	Electrochemical	CDS-7
Diborane	B2H6	500ppb	Electrochemical	CDS-7
Arsine	AsH3	250ppb	Electrochemical	CDS-7
Hydrogen selenide	H2Se	250ppb	Electrochemical	CDS-7
Disilane	Si2H6	25ppm	Electrochemical	CDS-7
Dichlorosilane	SiH2Cl2	25ppm	Electrochemical	CDS-7
Germane	GeH4	1ppm	Electrochemical	CDS-7
Ammonia	NH3	100ppm	Electrochemical	CDS-7
Hydrogen fluoride	HF	10ppm	Electrochemical	CDS-7
Phosphorus trifluoride	PF3	10ppm	Electrochemical	CDS-7
Hydrogen chloride	HCl	5 / 25ppm	Electrochemical	CDS-7
Hydrogen bromide	HBr	10ppm	Electrochemical	CDS-7
Fluorine	F2	5ppm	Electrochemical	CDS-7
Dichlorine	Cl2	5ppm	Electrochemical	CDS-7
Chlorine trifluoride	ClF3	1ppm	Electrochemical	CDS-7
Ozone	O3	1ppm	Electrochemical	CDS-7
Carbon monixide	CO	250ppm	Electrochemical	CDS-7
Hydrogen sulfide	H2S	50ppm	Electrochemical	CDS-7
Nitrogen trifluoride	NF3	100ppm	Electrochemical with pyrolyzer	CDS-7
Carbon tetrachloride	CCl4	100ppm	Electrochemical with pyrolyzer	CDS-7
Hydrogen	H2	500 / 1000ppm	Hot wire semiconductor	CHS-7
Oxygen	O2	25vol%	Galvanic cell	COS-7

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

Specifications / Approvals

Model	Main unit: PS-8N, PS-8M
Model	Sub unit: PS-8S
Sensor Detection Principle	Electrochemical cell, Hot wire semiconductor, Galvanic cell
Sampling Method	Pump suction type (approx. 0.5L/min ±20% automatic suction flow rate control)
Target Gas	Set to user specifications
Detection Range	Set to user specifications
Display	Monochrome LCD full dot display
	Gas concentration: 5-digit display(with units)
	Others: Gas name display, flow rate status indicator, alarm (1st and 2nd stage) status indicator, fault alarm display
	*Not available for PS-8S. display on main unit
Alarm Set Value	Set to user specifications
Alarm Accuracy	Combustible gas : ±25% of alarm set value (under equivalent conditions)
	Toxic gas : ±30% of alarm set value (under equivalent conditions)
	Oxygen deficiency: ±1vol% (under equivalent conditions)
Alarm Delay	Combustible gas : within 30 seconds at 1.6 times the alarm set value
	Toxic gas : within 60 seconds at 1.6 times the alarm set value
	Oxygen deficiency: within 5 seconds at 10 vol% until the concentration reaches 18 vol% (at 20±2°C)
	(Excluding pipe length and communication time for all gases listed above)
Alarm Display	Gas alarm 1st stage: Alarm 1 LED (red) flashes, LCD screen display ALARM1
Alarm Display	Gas alarm 2nd stage: Alarm 2 LED (red) flashes, LCD screen display ALARM2
External Outputs	[Digital signal*1]
	・PS-8M: Ethernet 10BASE-T/100base-Tx(Modbus/TCP)
	Modbus/TCP (Maximum number of connections depends on system configuration)
	Maximum transmission distance 100m (up to HUB)
	・PS-8N, PS-8S: None *PS-8N: RS485 (Modbus-RTU) when using the expansion unit MR module
	[Gas concentration analogue signal*2]
	・PS-8N, PS-8M: DC4-20mA (common negative terminal with power source) (output accuracy: within FS ±0.5%)
	0.6mA or less when a fault alarm indication occurs 300Ω or less including wiring resistance [Collective gas
	alarm contact(1st and 2nd stage), collective fault alarm indication contact*3]
	1a non-voltage contact/ automatic return
	*Rated load: AC125V 0.5A or DC30V 1.0A (resistive load)
	*Individual contact outputs require an expansion unit.
Explosion-proof Performance	Non-explosion-proof
Operating Temperature and Humidity Range	0℃ to 40℃ (given no sudden changes), 30 to 85% RH (given no condensation)
Power Source	・PS-8N: DC24V±10%
	・PS-8M: DC24V±10% or PoE (Power over Ethernet, IEEE 802.3at)
	・PS-8S: Supplied from the main unit
power consumption*4	CDS-7: 3.5W (max. 5.2W)
	CDS-7 (catalytic conversion type): 4.0W (maximum 5.9W)
	COS-7: 3.5W (max. 5.2W)
	CHS-7: 4.0W (max. 5.9W)
dimensions, mass	・PS-8N, PS-8M: W70mm x H124mm x D172mm (excluding protrusions), approx. 850g (excluding sensor)
dimensions, mass	・PS-8S: W70mm x H124mm x D172mm (excluding protrusions), approx. 770g (excluding sensor unit)

*1 Only Ethernet or expansion unit Modbus-RTU can be used.
*2 The analog output of the main unit is for the main unit only. The analog output of the sensor equipped with the sub unit requires an expansion unit (AO module).
The expansion unit (AO module) can also output analog signals from the sensor mounted on the main unit, allowing multi-core connections.
*3 When installing two or more sensor using subunits and using individual contact outputs, use an expansion unit (DO module).
In this case, the individual outputs for the sensor mounted on the main unit are output from the expansion unit (the main unit's contact are a collective output).
*4 When analog output and digital output are used simultaneously, power consumption increases.

CE Declaration of Conformity

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