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Transmitters

SD-1RI (TYPE HS)

The Model SD-1 series smart transmitter/ detect heads are sate of the art instruments housed in flameproof enclosure certified by ATEX. A simple magnetic control key is used to adjust and calibrate the instrument. Five different types of sensor can be used along with SD-1 to detect variety of Flammable, Toxic and Oxygen gases. SD-1 IR Type HS comes with HART output and is SIL2 compliant. Relay contacts for Alarms, Fault and 4-20 mA output is available standard in other models.

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Features
Applications
Approvals
Specification
Accessories

Explosion class Exd IIC T6 Gb (CML 15ATEX1034 / IECEx (Pending))
SIL2 IEC61508:2010 Parts 1-7
4-20mA DC output with HART
IP65 ingress class

Small, rugged, dust and weather proof construction
One man maintenance by magnetic control key
Self diagnosis by microprocessor

LNG Terminal
Petro-refinery, Petrochemical Plants
Chemical Plants

Power Station, Gas Utilities
Iron and steel Works

ATEX, IECEx, CE, TIIS

Model	SD-1RI（TYPE HS)
Detection Principle	Non Dispersive Infrared Ray (NDIR)
Gas to be detected	Combustible gas
Concentration Display	Seven-segment LED (four-digit)
Detection Range	0-100 %LEL (0.5%LEL/digit)
Detection Method	Diffusion type
Alarm Setpoint Value	25 %LEL
External Output	4-20mADC with HART (load resistance ： 300 Ω Max)
Initial clear time	Approx. 25 seconds
Alarm Delay Time (under the same conditions)	Approx. 30 seconds when exposed to gas concentration of 1.6 times alarm level
Gas Alarm Display	ALM lamp on (red)
Gas Alarm Pattern	Non latching (auto-reset)
Fault Alarm / Self Diagnosis	System abnormalities / sensor abnormalities
Fault Alarm Display	FAULT lamp on (yellow)/detail display
Fault Alarm Pattern	Non latching (auto-reset)
Transmission Cable	CVVS 1.25 mm2 - 3-core or - 4-core CVVS 2.0 mm2 - 3-core or - 4-core
Transmission Distance	Max 1.25 km CVVS 1.25 mm2 Max 2.0 km CVVS 2.0 mm2
Power Supply	24 VDC (17 – 26.4 VDC)
Power Consumption	Maximum 2 W
Cable Connecting Port	Flameproof Cable Gland
Operating Temperatures	-20 - +60^°C (at a constant condition)
Operating Humidity	Below 95% RH (Non‐condensing)
Explosion-Proof Structure	Flame-proof enclosures
Explosion-Proof Class	Exd IIC T6 Gb
Explosion-Proof Certification Number	CML 15ATEX1034 / IECEx (Pending)
dimensions / Weight	Approx. 148 (W) x 161 (H) x 88 (D) mm (projection portions excluded) Approx. 2.0 kg