Detcon TP-524D-HRT Manual de usuario descargar pdf (Pagina 10)

Model TP-524D-HRT

TP-524D-HRT Instruction Manual Rev. 0.3 Page 6 of 48

There are some gases typically found in industrial environments that can cause a cross-interference response

on the sensor. See the Table below for some examples.

Table 1 Cross Interference Gases

GAS PPM GAS PPM

Methane 25,000 = 0 Ammonia 500 = 1

Ethane 5,000 = 0 Diesel Fuel 1000 = 0

Hexane 5,000 = 0 Dimethyl Sulfide 4.4 = 0

Propane 5,000 = 0 Ethylene 200 = 0

Butane 5,000 = 0 Freon 12 1,000 = 0

Carbon Monoxide 1% = 0 Hydrogen 5% = 0

Carbon Dioxide 5,000 = 0 Methyl Mercaptan 10 = 0

Carbon Disulfide 14 = 0 Sulfur Dioxide 300 = 0

Methanol 500 = 5 Toluene 32 = 0

Isopropanol 500 = 3 Ethanol 500 = 5

NOTE:

The Detcon MOS Sensor Cell can be damaged to the point of non-functioning if the

unit is left off power and in the presence normal air levels of moisture for periods exceeding 8

hours.

NOTE:

Always protect the sensor cell with the Detcon Sealing Cap and a fresh desiccant

packet when the sensor is powered off, this will avoid permanent sensor cell damage and help

preserve the span calibration.

2.4 Mounting Installation

The TP-524D-HRT should be vertically oriented so that the sensor points straight downward. The explosion-

proof enclosure or junction box would then typically be mounted on a wall or pole (See Figure 6). Detcon

provides a selection of standard junction boxes in both Aluminum and Stainless Steel.

NOTE:

Do not use Teflon Tape or any other type of Pipe Thread material on the ¾” threads

unless the unit is mounted in a severe or harsh environment. Metal-on-metal contact must be

maintained to provide a solid electrical ground path. If Teflon Tape is used the Sensor must be

externally grounded using a ground strap.

When mounting on a pole, secure the Junction Box to a suitable mounting plate and attach the mounting plate

to the pole using U-Bolts. (Pole-Mounting brackets for Detcon Junction Box’s are available separately.)

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Detcon TP-524D-HRT Manual de usuario Pagina 10