Span Calibrating A Single Sensor Ch. Module - Teledyne 1220 Instruction Manual

4 Operation
4. (B) Disconnect the zero gas from the sensor.
5. (A) If necessary, proceed to the previous or next procedure. Other-
NOTE: To accomplish the following task, two operators are needed.
(A) = Operator One at the Control Unit
(B) = Operator Two at the probe
1. (A) At the Front Panel of the Channel Module to be calibrated:
2. (B) Introduce span gas into sensor.
3. (A) After the reading stabilizes:
NOTE: If you need to adjust the Sensitivity Gauge, see Paragraph 4.8
4. (B) Disconnect the span gas from the sensor.
5. (A) If necessary, proceed to the previous or next procedure. Other-
4-8
a. Press the up or down arrow key until the display reads "0".
b. Press ENTER.
wise, press RUN to place the instrument in the analysis mode.
4.4.2 Span Calibrating a Single Sensor Channel Module
Operator one at the Control Unit and operator two at the
probe. Both operators are involved in the calibration process.
They must be in constant communication, by phone or other
means.
a. Press SELECT.
b. Use the right or left arrow key to highlight the SPAN option.
c. Press ENTER.
Result: Alarms are deactivated and the SPAN display
option flashes.
a. Press the up or down arrow key until the display reads the value
that corresponds to the LEL of the certified span gas used.
NOTE: Information about calibration valves for various com-
bustible gases appears in Table 1 on page 2-5 and in Section
4.11 on page 4-14
for recommendations.
b. Press ENTER.
wise, press RUN to place the instrument in the analyze mode.
Teledyne Analytical Instruments
Model 1220