產品名稱：KnowzNet? fixed gas monitoring system

Mix-and-match sensor heads· Wide selection of sensor heads including:
    - Combustibles (fuels, solvents, etc.)
    - PPM monitoring of toxic gases
    - Sensing of refrigerant gases
    - %vol measurement of oxygen, helium
· Ports compatible other Neodym detectors

Real-time monitoring and control· Sensors polled continuously for alarms/errors
· Sensor response times 10-30 secs. typical
· Audio/visual/relay alerts upon any alarm
· Peak register for each sensor
· Alarm time/date/level stored in memory
· Dual dry relay contacts switch external loads
· Zone relays avail. for security system wiring

Easy to install and hook-up· Panel hang-mounted or recess-mounted
· Sensors are factory pre-calibrated
· Snap-connect with RJ-11 (telephony) plugs
· Terminal blocks/crimp sockets optional
· Easy assimilation into structured wiring

Simplified panel operator interface· Dual-color LED for each zone:
    - Steady Green: Okay
    - Steady Red: Alarm
    - Green Blink: User accessing menu
    - Red blink: sensor error/failure
· English menu system via 2-line LCD
· Control via Up/Down/Select/Clear buttons

Powering flexibility · Sensors powered centrally via their cables
· 12VDC panel powering for vehicular use
· Up to 60VDC operation available
· 110VAC adapter included (N. America only)
· Spare power jack for redundant powering
· 2-, 4- or 8-hour battery back-up available

Simple to maintain and service· Digital sensor zeroing via panel or PC
· Zero sensors in clean air with button/mouse
· Span sensors in cal. gas by correcting reading
· 2 to 5 years typical sensor lifetime
· Panel firmware field-upgradeable (serial port)
· Durable anodized aluminum enclosures

Specification Information

PARAMETER	SPECIFICATION	COMMENT
Number of ports:	8
Input range:	0 to 5VDC
Sampling rate:	1,000 samples/second
Sampling resolution:	8 bits
Sampling accuracy:	½ LSB
Action levels:	1 to 4	Number/level are user-programmable
Action levels affect:	LEDs/Beeper/Relay(s)	User-programmable
Display update rate:	0.1 seconds
Start-up time:	60 seconds	Warm-up time for sensors with heaters
Port indicator lamps:	8 bicolor LEDs	Red/green
Text display:	2 line x 8 LCD	31 x 14 mm viewing area
Operator keypad:	Up/Down/Select/Clear	Pushbutton switches
Port connectors:	RJ-11 (6-4) 3.5mm terminal block Hirose DF3 2mm	Default Optional Optional
Panel beeper:	80dB @30cm piezzo
Master relay:	0.5A 120VAC 1.0A 24VDC	DPDT (double NO/NC contacts)
Zone relays:	0.5A SPST Reed	Optional, one per port, NO or NC
Relay contacts access:	3.5mm terminal blocks
Serial PC interface:	4,800 BPS	DB9 female, half duplex
USB PC interface:	12,000 BPS	USB 1.0 compatible
PC Ports I/O Protocol:	Neodym proprietary
Power jacks:	2.1mm radial (2)	Center negative
Back-up battery input:	4-pin Molex
Storage temperature:	-40°C to +85°C
Operating temperature:	0°C to +70°C
Operating humidity:	0 to 95%	Non-condensing
Input power voltage:	12 to 14 VDC 12 to 40 VDC 12 to 60 VDC	Default Optional Optional
Power supply ripple:	250 mV max.
Power consumption:	150 mA @ 12 VDC	Panel only, not including sensors
Port power budget:	200 mA @ 12 VDC	Per sensor. 1.6A total power max.
Port power current limiting:	1.2A @ 12 VDC	10-ohm current limiting resistor
Cable type:	18-24 SWG	Telephone, Station or Cat. II+ cable
Cable length:	100m max.	Voltage drop not to exceed 4 VDC
Electrical rating:	Non-incendiary	Not for use in Hazardous Locations Approved AC adapters only
Dimensions:	216 x 147 x 25 mm
Weight:	250g

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