Trace hydrogen sulphide measurement, ATEX certified

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SS2100 H₂S

low level H₂S measurement
rapid speed of response
high accuracy
low cost of ownership

Using a laser to monitor low levels of hydrogen sulphide offers a number of key benefits.

This robust, non-contact analyser is highly accurate with an extremely rapid speed of response, and has led the industry to a new era. The ability to monitor water vapour in near real time has led to signifcantly improved confidence in the measurement, and improved process efficiencies.

The speed of response of the analyser enables rapid detection of, and recovery from, process upsets, allowing easier diagnosis of plant problems, and rapid return to normal process level. This allows quick return to shipping product.

Non contact with the process gas - the active measurement system is mounted behind a window, making this technique a robust measurement system with corossive and contaminated gas streams.
High accuracy - the initial accuracy is maintained as there are no components in the measurement system that will cause progressive drift.
Rapid response - near real time process control can be achieved, improving process efficiency and, in some cases, allowing the cost of process plant to be reduced.
Low maintenance - with no consumables or moving parts, this analyser has very low operational costs and can provide a short return on investment.

GENERAL
Measurement	Hydrogen sulphide
Measurement principle	Absorption spectroscopy using a tunable diode laser
Range	0 to 10 /20 /50 /100 /500 /1000 /2500 or 5000 ppm_v
	Other ranges available on request
Analogue output	4 to 20 mA configurable
Repeatability	Range dependent *
Response time	Typically less than 20 seconds*
Operational temp. range	-20 to 50 °C
LCD display	Concentration, cell pressure & temp. & diagnostics
Certification
European	CE marked
ATEX/IECEx	Ex II 2G, Ex d IIB+H2 T4, II2D ExtD A21 IP66 T135°C
Shipping
Shipping weight	Approx 86 Kg
MECHANICAL
Dimension	670 H x 470 W x 377 D mm
Material (wetted parts)	316 stainless steel standard *
ATEX Box	Aluminium epoxy coated
Pressure to cell	70 kPaG (10 PSIG)
Pressure to sample cabinet	Between 140 to 350 kPaG 920 to 50 PSIG)
Sample flow rate	0.1 to 4 S l/min.*
Ingress protection	IP66

ELECTRICAL
Power	100 to 240 VAC, 50 to 60 Hz, 300 W
Outputs
Current	Qty 2, isolated 4 to 20 mA, 1200 Ω at 24VDC
Relay contacts	Qty 1 general fault, Qty 1 Hi/Lo alarm
Digital 1	RS-485 half duplex & 10/100 ethernet (standard)
Digital 2	RS-232 (optional)
Protocols	Modbus Gould RTU or Danial RTU or ASCII
* Application dependent
All specifications subject to change