VOC Pro Transmitter • 43
3. Press the MENU button to save the desired setting and to advance to the sensor Alarm 2
increasing/decreasing setting screen.
Sensor Alarm 2 Increasing/Decreasing Setting
1. From normal operating mode, press and release MENU until the Alarm 2 increasing/
decreasing setting screen appears.
2. Use the ADD and SUB buttons to select between activation on an Increasing or
Decreasing gas level, respectively.
3. Press the MENU button to save the desired setting and to return to Normal Operating
Mode.
NOTE:
The alarms will NOT activate, even in the presence of gas, until you have exited the
menu mode for approximately 1 minute. For auto resetting alarms, the alarms will
NOT deactivate until the gas level reading at the sensor has fallen 10% below the
alarm set-point.
Maintenance
RKI recommends that our equipment be calibrated a MINIMUM of every 90 days, and
STRONGLY advise that calibration be performed every 30 days. Without knowing the
specific application, sensor assembly location, gas exposure and other factors, the company
recommends monthly calibrations – assuming no damage or potential damage has occurred to
the sensor and that there has not been a power outage to the sensor assembly. If damage has
occurred or the power supplied to the sensor has changed, a calibration should be completed
immediately.
Scheduled maintenance should include the zero and calibration of the sensor and an alarm
test. See page 59 and page 28 for instructions to perform these procedures.
The sensor head should be kept free of airborne particles, dirt, mud, spider webs, bugs and
insects, and/or any other debris that could potentially cover or coat the sensor. Keeping the
sensor head clear of foreign articles will allow for proper operation of the device. A brief
inspection during scheduled maintenance should suffice, but dependent upon the location and
the environment in which the unit is installed, more frequent inspections may be warranted.
The VOC Pro may be adversely affected by the exposure to certain airborne substances. Loss
of sensitivity or corrosion may be gradual, if such materials are present in sufficient
concentrations. The performance of the device may be impaired during operation in the
presence of substances that can cause corrosion on gold plating. Continuous and high
concentrations of corrosive gases may also have a detrimental long-term effect on the