RC Systems ViewSmart 1600+, Operation Manual

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UM-1097
Revision B 76
Chapter 5 Calibration Procedure
5.1 Preparation
Caution : Calibration of inputs should only be performed at the ViewSmart 1600+ when the sensor has no
zero and span controls within the sensor itself.
Calibration is the most important function for ensuring correct operation of the ViewSmart 1600+. The
CAL MODE is designed to make calibration quick, easy and error free, and a successful Zero and Span
calibration requires only four keystrokes. The 4-20mA output transmits 3mA during the calibration, and
4mA during calibration purge to prevent alarms. After 5 minutes of inactivity the controller will exit
calibration mode automatically.

RC Systems recommends performing calibrations

Immediately prior to placing a gas detector in service

Any time a new sensor is installed

Every six months for routine calibrations (more often if sensor is known to have been exposed
to gas for extended periods of time)

Periodic bump tests are recommended if detector has potentially been exposed to
incompatible gases to ensure correct operation

Follow these calibration guidelines to ensure proper operation of your RC Systems, Inc. gas
detector:

Calibration accuracy is only as good as the calibration gas accuracy. RC Systems recommends
calibration gases with National Institute of Standards and Technology (NIST) traceable
accuracy to increase the validity of the calibration.

Do not use gas cylinders beyond their expiration date.

Calibrate a new sensor before it is put in use.

Allow the sensor to stabilize before starting calibration.

Calibrate on a regular schedule. RC Systems recommends once every 6 months, depending on
use and sensor exposure to poisons and contaminants.

Calibrate only in a clean atmosphere, free of background gas.
Prior to beginning your calibration make sure you have the following items:
1. A cylinder of calibration gas with concentration equal to the SPAN GAS VALUE setting (RC
Systems typically recommends choosing a value at 50% of full scale.)
2. A cylinder of Zero Air (unless you are confident there is no target gas potentially present in
the area)
3. A flow regulator, a fixed flow of 0.5LPM is recommended for most applications, but some
instances may require a 1.0LPM fixed flow regulator.
4. A Calibration Cup or Calibration Adaptor
5. Sufficient length of flexible tubing to connect the regulator to the calibration adaptor