Multi Gas Clip Simple Plus User’s Manual
UM MGC-S-PLUS v1.00a
Portable gas detectors you can count on
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ADJUSTABLE OPTIONS continued
TWA Method
- The algorithm used to calculate the TWA (Time Weighted Average) can be set to either an average over a moving
window (OSHA) or as a cumulative average (ACGIH).
TWA Interval
- The TWA Interval defines the time frame over which the long-term average is calculated. Default is 8 hours.
STEL Interval
- The STEL Interval defines the time frame over which the short-term average is calculated. Default is 15 minutes.
Sensor Enable/Disable
- Individual sensors can be disabled. A disabled sensor is completely removed from the detector’s display
for sensor readings, alarm limits and calibrations. This option can be enabled/disabled only with the GCT IR Link.
Caution: A disabled sensor will not measure gas or detect alarm conditions .
Bump Interval
- The Bump Interval controls how often the detector notifies the user to bump test the sensors. The interval can be
individually adjusted for each sensor.
Calibration Interval
- The Calibration Interval controls how often the detector notifies the user to calibrate the sensors. The
interval can be individually adjusted for each sensor.
Calibration Gas
- When the detector is calibrated, it scales the sensor readings to match the concentrations of the applied gases.
The calibration gas concentrations can be adjusted to match the respective levels contained within the gas bottle.
Default is 25ppm H
2
S, 100ppm CO, 18% O
2
and 50% LEL (2.5% vol CH
4
). This option can be adjusted only with the GCT IR Link.
%-by-Volume CH
4
- Allows the detector to display gas readings as %-by-volume CH
4
rather than % LEL. The conversion rate can
be configured by specifying what the methane concentration is for 50% LEL (typically 2.5% in N. America and 2.2% in EU).
Language
- The detector is able to display all its text prompts in any of six languages: English, German, French, Spanish, Italian or
Portuguese.
Note: “OL”, “ERROR” and sensor icons (H2S, CO, O2 & LEL) remain the same for all languages
.
Activity LED Period
- This option allows the detector to flash a single LED at a specified interval to indicate that the detector
is on. The interval between flashes can be set anywhere from 5 seconds to 120 seconds.
•
If using GCT IR Link Software - under the Advanced Options section, locate the Activity LED Period box and set the
desired interval by either clicking on the UP arrow or typing the desired interval directly into the box. To finalize, click
on the WRITE button at the bottom of the screen. To disable this function, type "0" in the Activity LED Period box and
press ENTER. The box will display "OFF". Click on the WRITE button to finalize.
•
If using GCT Manager Software - place a check on the Activity LED box, then go to the LED Period(s) box and set the
desired interval by either clicking on the UP arrow or typing the desired interval directly into the box. To finalize, click
on the WRITE button at the bottom of the screen. To disable this function, type "0" in the LED Period(s) box and press
ENTER. The box will display "OFF". Click on the WRITE button to finalize.
NOTE: Simply setting the interval in the Activity LED Period box or the LED Period(s) box without clicking on the
WRITE button will not enable/disable this function on the detector .
