Sensitron SMART3G-GrI, Instruction Manual

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ENGLISH
Pag. 22
Relay outputs, with ST-
S3REL board (optional)
3 relays with tension free changeover contact 24V-1 A (non-la-
tching relay)
Auto zeroing routine Zero drift compensation
Digital filter Variable average on the sampled values
Repeatability From ±2% to ±5% FS (depending on sensor type)
Accuracy From ±2% to ±5% FS (depending on sensor type)
Warm-up time <120 s
Stabilization time 60 minutes
Response time (t90) < 60 s
Storage conditions:
Temperature
Humidity
Pressure
Time
-40 / + 85 ° C (or sensor limits, for catalytic and IR sensor)
0 / 20 ° C (for the electrochemical cell)
See operating conditions
See operating conditions
1 year (for catalytic and IR sensor)
6 months (for electrochemical cell)
Operating conditions:
Temperature
Humidity
Pressure
Air velocity
See instrument label
Catalytic sensor: 20-90% Rh / 40 ° C (5-95% RH non condensing,
on request)
IR sensor: 0/95% RH
Electrochemical cell: 15/90% RH (non condensing)
80-120 kPa with catalytic sensor
86-120 kPa with infrared sensor
< 6 m/s
Cable entrance 3 x ¾” NPT
Weight ~ 3300 g
Dimension mm 145x126 h 187
Positioning The sensor head must be mounted downward
EMC Reference standard EN50270:2015
2. Certifications
SMART3G-GrI series gas detectors meet the essential he-
alth and safety requirements in accordance with the ATEX
Directive 2014/34/EU.
The gas detectors of the ST series have been designed for
use in potentially explosive atmospheres due to the pre-
sence of gas, vapour, mist and dust, classified as zone 1 or
zone 2 (or zone 21 or 22 when the dust cover is applied) ac-
cording to EN 60079-10-1 and EN 60079-10-2 classification.
They have “Ex d” protection mode (explosion proof),
designed specifically for applications in mines or under-
ground (Group I) according to CESI 14 ATEX 034 certificate
in compliance with EN 60079-0 and EN 60079-1 standards.