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1.1 Understanding Safety Information
This manual contains safety and use instructions that must be
followed during the installation, commissioning, operation, care and
maintenance, and service of the SSR-Ex. All responsible personnel
must read this manual prior to working with this instrument and should
familiarize themselves with the following safety symbols, signals,
and pictorials.
The safety alert symbol is shown alone or used with a signal word
(DANGER, WARNING or CAUTION), a pictorial and/ or a safety
message to alert you to hazards.
When you see this symbol alone or with a signal word on this
instrument or in this manual, be alert to the potential for death or
serious personal injury.
Safety signal words have the following meaning:
Identifies hazards which, if not avoided, could
result in death or serious injury.
Identifies hazards which, if not avoided, will
result in minor or moderate injury.
Identifies practices, actions or failure to act
which will result in property damage or damage
to the equipment.
Pictorials used on the equipment and in this Manual have the following
meanings:
This pictorial alerts you to the need to read the
Manual.
This pictorial alerts you to electricity,
electrocution and shock hazards.
1.0 Safety
2.0 Overview
This instrument has been specifically designed for TRO measurement
and to operate in hazardous atmospheres meeting the IECEx and ATEX
ratings as stated in the specifications. The instrument uses an IECEx
approved purge/ pressurization controller called the Air Sentinel II.
Please refer to the companion manual Cat. No. 100038B for all
information on:
• Operation of the Air Sentinel II
• Electrical Power Connections
• Purge Air Connection
Figure 1 - Instrument Overview
This instrument is sectioned such that all the electrical or powered
devices are in the upper, purged section of the enclosure, while
the lower (wetted parts) section contains no power at all and can
be operated and maintained in a safe condition even with the main
enclosure door open. Refer to Figure 2.
The SSR-Ex has been designed to meet the design criteria specified
by Standard Methods for the Examination of Water and Wastewater
(21th Edition) Method 4500-Cl G. DPD Colorimetric Method.
The SSR-Ex uses a 515nm LED as the measurement light source.
Every effort has been made to ensure the accuracy of this manual. Due
to the continuous development and improvement of all instrumentation,
there may be slight differences between this manual and the instrument
received.
