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Figure 16 - Magnetic Reed Switch
Activation
Periodic Response Check
We recommend that the toxic gas detector be verified or calibrated every 3 months.
A typical response check involves the application of calibration gas to the sensor, then the observation of the
response LEDs, analog output, display and external monitoring equipment. Be sure to prevent unwanted
response of external monitoring devices and equipment during this procedure. If the UNI-TRAN Premium
Plus response to calibration gas is within its specified accuracy then it is not necessary to perform a
calibration. For example, when 50% of full scale is applied, the response is expected to be between 11.5mA
(47% of full scale) and 12.5mA (53% of full scale). An additional consideration is the accuracy tolerance of
the calibration gas which may be + or - a few percent. If the calibration gas is + or - 10% of full scale then the
reading may be from 10.7mA (42% of full scale) to 13.3mA (58% of full scale).
Your system is now operational. For further information please review the following chapters.
Chapter 4 Operation
Chapter 5 Troubleshooting
Chapter 6 Glossary of Terms
Chapter 4 Operation
Operator Interface
Main Menu
The main menu of the Toxic Detector has three options that allow you to adjust (programming) or view its
system parameters :
< Calibrate Sensor
< Set Relay Options
< Review Settings
In order to enter the main menu of the detector place the curved side of
the magnet on the side of the enclosure at the 10 o’clock position (see
Figure 15) where marked to actuate the magnetic reed switch or press the
Cal/Reset switch. Release the magnetic reed switch or Cal/Reset switch
after the timer has finished counting down from 10 to 0. In the main
menu, the options are displayed and prompted for selection by
displaying “YES?”. Momentarily activate the magnetic reed switch or
Cal/Reset switch when the desired option is prompted for selection. If
the magnetic reed switch or Cal/Reset switch is not activated the Toxic
Detector will scroll to the next option. When a selection has been made
the selection is acknowledged with a flashing “YES”. If none of the
three options are selected, the Toxic Detector returns to the normal
operation mode.