TQ Environmental LTD
Product Manual TQ 4000
Filename: 7970H8 Page 11 of 27
<SPACE> character and press the SELECT button. When the SELECT
button has been pressed the next character on the right will be
displayed. To accept the channel location description the user must
press the MENU button.
2.3.2. Set Gas Name
This option is used to set a particular gas to a particular channel
location. The current channel location is the one entered at the
beginning of the Configure Channel menu. To set a particular gas the
user must press the UP and DOWN buttons to cycle through the
available gasses. This option will allow the user to change the name of
the sensor gas type to a more meaningful description up to 10
characters in length, including the <SPACE> character.
The user must use the UP or DOWN buttons to cycle through the
alphanumeric characters, pressing the UP and DOWN buttons
simultaneously will toggle between uppercase and lowercase
characters. Press the SELECT button, when the display shows the
desired character, to accept that character. To leave spaces, select the
<SPACE> character and press the SELECT button. When the SELECT
button has been pressed the next character on the right will be
displayed. To accept the sensor gas type description the user must
press the MENU button.
2.3.3. Set Sensor Range
This option allows the user to set the desired gas sensor range. The user
may scroll through standard fixed sensor range values or the user may
select the user defined sensor range using the UP and DOWN buttons.
The standard available sensor range values are as follows: 25.0, 50.0,
100.0, 100, and 50000.
For the user defined sensor range option, if the user holds the UP or
DOWN buttons for 10 seconds the display values will start to increment
/ decrement in multiples of 10. Holding the same buttons for a period
above 20 seconds the display values will increment / decrement in
multiples of 100 and for a button held for more than 30 seconds the
display values will increment / decrement by 1000. The decimal point
can be toggled on and off by pressing the MENU button. The user may
accept the displayed value by pressing the SELECT button.
2.3.4. Set Sensor Units
This option will allow the user to select the appropriate sensor units
corresponding to the gas type. The user may scroll through standard
fixed sensor units or the user may select the user defined sensor units
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