Area Classification; Cell Housing/Probe - Teledyne 3010TAC Operating Instructions Manual

1 Introduction
CAUTION: Bypassing the barriers in any way nullifies their
effect, and conditions which prompted their use
will prevail. If the instrument is used under any
conditions contrary to the intrinsic safety design,
the user assumes all risk.
1.3

Area Classification

The control unit and barrier box are general purpose units and must be
located in a non-hazardous location. The analysis unit, when installed with
the safety barriers in accordance with drawings C67564 and D66193 is
CENELEC approved as intrinsically safe.
CAUTION: The CENELEC approval as Intrinsically Safe re-
quires that the instrument be properly installed
with the included approved safety barriers and
barrier box as shown in drawings C67564 and
D66193.
1.4

Cell Housing/Probe

The cell housing (probe) provides an enclosure for the L-2 MFC O
(or B-2 with an adaptor) sensor and temperature-compensation thermistor.
The sensor is held in place by two contact springs and the cell cap.
To remove the cell for replacement, three (3) wing nuts must first be
removed and then the cell cap. After replacing the MFC in the cap, mem-
brane side down (screen), the cap and three (3) wing nuts are replaced.
CAUTION: Do not touch the silver/gold color sensing surface
of the cell as it is covered with a delicate Teflon
membrane that can be ruptured in handling.
The gas inlet/outlet ports are Swagelock fittings that provide for the
connection of 6mm tubing. Other various connections are available.
Electrical connections are made by a wire cable located at the top of
the cell housing. (See the "Wiring Diagram" at the rear of this manual).
1-2: Part II
Teledyne Analytical Instruments
Model 3010TAC
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