Welch-allyn LC101 CO2 Module - User Manual Instrukcja Użytkownika Pobierz pdf (Strona 20)

LC101 CO

Module OEM Implementation Manual

Page 20 Conﬁdential Welch Allyn OEM Technologies

To get an accurate calibration, the LC101 needs to be operating for at least 5 minutes in

measurement or autorun mode with the scrubber installed. The LC101 internally monitors the

run time and will not allow a Zero Calibration if the run time requirement has not been met.

The LC101 monitors the calibration progress and provides a “Calibration OK” (or “not OK”)

message to the host system when polled for status. See the LC101 Software Protocol and the

Zero Calibration Commands and Responses for more detail. After a successful Zero Calibration,

the LC101 updates the zero residual offset constants located in the LC101 C-Cap EEPROM

Memory and the IR source current.

Zero Calibration Procedure

Equipment needed:

• watertrap

•CO

scrubber (or 0% CO

medical-grade gas source; see the Two-Point User

Calibration procedure for pressurized gas setup)

To Perform a Zero Calibration:

The user is required to apply a 0% CO

gas, or “zero” gas, during the steps of a Zero Calibration.

To perform Zero Calibration, the user must follow the Original Equipment Manufacturer’s

procedure typically provided in the Operator’s Guide or User Service Manual.

1. Select a well ventilated room to perform the calibration.

2. Make sure the LC101 has been operating for at least 5 minutes prior to the Zero Calibration.

3. Attach the CO

scrubber to the watertrap inlet according to the CO

scrubber “Directions for

Use” (or attach a 0% medical-grade gas source). Now let the LC101 operate for one

minute.

4. After approximately one minute, observe the CO

reading. The CO

reading should be

between 0.0% - 0.3% with well-ventilated room air.

5. Proceed with the zero gas phase of the calibration as deﬁned by the host system.

6. Disconnect the CO

scrubber (or gas source) from the watertrap after the zero gas calibra-

tion.

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Welch-allyn LC101 CO2 Module - User Manual Instrukcja Użytkownika Strona 20