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GASSONIC OBSERVER-i
82
8.2. Specifications
Detector Type
Background Noise
Ultrasonic (acoustic) gas leak
detector
Input Power
15-36 VDC, 250 mA max.
24 VDC, 170 mA nominal
Rejection Method
Artificial Neural Network (ANN)
Relay Ratings
(optional)
8 A @ 250 VAC
Gas Leak
Recognition
Method
Artificial Neural Network (ANN)
Current Output
(sink or source)
Status Indications:
0 mA: Start up, no power
1 mA: Pulsed acoustic error
3 mA: Unit inhibit
Classic Mode:
4 – 20 mA,
40 – 120 dB (u)
ANN Mode:
4 – 12 mA,
40 – 120 dB (u),
16 mA warning, 20 mA alarm
Min. Acoustic Det.
Frequency
(ANN Mode)
12 kHz
Min. Detection Limit
40 dB (u)
Min. Pressure
Requirement
2 BAR (29 psi)
Accuracy
+/-3 dB
Self-test
Performed every 15 minutes
EMC/RFI
EMC Directive 2004/108/EC EN
61000-6-2, EN 61000-6-4
Response Time
< 1 s (speed of sound)
Serial Digital
Communication
HART, Modbus
Detector Coverage
(ref. Methane)
Enhanced Mode (ANN)
(@ 0.1 kg/sec):
FQHI setting: 17 meters (56 ft.)
Ultra-high to low background noise
(Default)
FQLO setting: 28 meters (92 ft.)
Medium to low background noise
Classic Mode
(@ 0.1 kg/sec):
Ultra-high: 7 meters (23 ft.)
High: 12 meters (39 ft.)
Medium: 18 meters (59 ft.)
Low: 24 meters (79 ft.)
Cable
Requirements
Max. cable length between
Observer-i and power source @
24 VDC (20 ohm) 2.08 mm2
(14 AWG) – 1,809 m (5,928 ft)
Operating Temperature
Range
40°C to 60°C (-40°F to 140°F)
Operating
Humidity Range
10-95% RH, non-condensing
Housing
Stainless Steel AISI 316L
Approvals
Classification
ATEX/IECEx:
Ex d ia IIB+H2 Gb T6,
Ex tb IIIC T85°C Db
(Ta = -40°C to +60°C)
CSA:
Ex d ia IIB+H2 Gb T6, Ex tb
IIIC T85°C Db
FM/CSA:
Class I, Div. 1, 2 Groups
B,C,D; Class II, Div. 1, 2 Groups
E,F,G; Class III, T5
(Ta = -40°C to +60°C)
Dimensions
203 x 203 x 201 mm
(7.99 x 7.99 x 7.91 in)
Weight
7.5 kg (16.6 lbs)
Conduit Entries
¾“ NPT or M20 x 1.5
Approvals
ATEX, CSA, FM, IECEx, CE HART
6.0 registered FM certified to IEC
61508 (SIL 3)
Mounting Holes
2x mounting screws – M8 x 19
max
Ingress Protection
IP66 / Type 4X
Accessories
GASSONIC 1701 Test and
Calibration unit,
GASSONIC SB100 Bump Test tool
Warranty
2 years
Device Drivers
DDL, DTM available from
generalmonitors.com
Standard Configuration
OBSERVERi-1-1-1-1-1-1