O2 Innovations pmn Example Display, Internal Pump Status, Internal Sampling Pump, TARGET Series

TARGET Series ENMET Corporation

3.5.5 Internal Sampling Pump

If the TARGETinstrument has the optional internal sampling pump installed, the Pop-Upmenu provides the ability to turn the pump on and off.

CAUTION: Some gases require that the pump be on for proper detection and calibration.

See Section 8.0, Tables 3 and 4.

To turn the pump on or off:

￿Press and hold the Menu buttons to enter the Pop-Upmenu.

￿Press the MENU button five times to move the asterisk to the Pump position.

￿Press the SELECT button once to choose this screen.

￿Press the SELECT button to turn the pump on

￿Press the MENU button to turn the pump off.

POP-UP MENU Auto-Zero Comb disp Cal Stat Location *Set Pump ON

SELECT

SAMPLING PUMP SELECT=ON MENU=OFF Current state: OFF

Example: Display, Internal Pump Status

If the pump is off, the bottom line of the display says “Set Pump ON”.

If the pump is on, the bottom line of the display says “Set Pump Off”.

NOTE: The Pump feature is only displayed in the Pop-Up menu if the instrument is supplied with the optional internal sampling pump.

Attach the sampling shield supplied with the instrument, to the bottom of the instrument in the same manner as the calibration shield, see Figure 8. The calibration shield has a orange label. The sampling shield has an yellow label.

Attach the supplied 20 foot sampling hose or the optional 2 foot sampling wand to the hydrophobic filter on the back of the shield.

Sensor response time, if the tubing is 20 feet long, allow at least 10 seconds for the test sample to make it through the tubing. The sensor response time is typically 30 – 60 seconds to achieve 90% of the final reading, depending on the specific sensor and the gas being detected. Therefore, the total 'system' response time for an instrument using the internal sampling pump and 20 feet of hose is approximately 40-70 seconds to achieve 90% of the final reading.

NOTE: The sampling shield and sampling hose or wand must be firmly and correctly attached to the TARGET instrument for proper remote sampling operation.

The instrument monitors the sample pump operation and provides an audible alarm and visual indication on the status line of the display, in the event of a low flow condition.

NOTE: The sampling shield and sampling hose or wand must be removed from the TARGETinstrument for diffusion operation.

For instruments with internal sampling pumps, a calibration procedure is required whenever a pump is replaced or when calibration is performed on the instrument sensors.

It is also recommended to perform pump calibration if any abnormal pump operation is observed. Pump calibration is performed in the Advanced Maintenance Menu. See section 6.4.8 for pump calibration instructions.

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