MSA Ultima Series User Manual

6. To disable the calibration signal, aim the controller at the sensor
and press the 0 button.
• The command is sent immediately
• The Ultima Gas Monitor flashes Sig OFF
• The Ultima X Series Gas Monitor displays: CAL SIG OFF.
Procedure 9. Setting the Number of Days
Between Ultima Gas Monitor Auto-calibration Periods
With the use of the Ultima Gas Monitor auto-calibration module, the
Ultima Gas Monitor is capable of automatically applying zero and span
gas to itself. This provides a complete calibration of the sensor without
operator intervention. If the Ultima Gas Monitor auto-calibration module
is connected, the Ultima Gas Monitor must be programmed to calibrate
itself between 1- to 128-day intervals.
1. Press the SEND button.
• The display prompts: Send?
2. Press the CAL button.
• The display prompts: Sel Cal Action +.
3. Press either the + or - button and scroll to the DaysPerAutoCal
display message.
4. Press the ENTER button.
• The display prompts: CalTerm ### dy
5. Enter the three-digit period desired (from 1 day to 128 days).
(Leading zeros are required.)
6. Aim the controller at the sensor and press the ENTER button.
• The Ultima Gas Monitor shows the number of days between
auto-calibrations for five seconds
• The Ultima Gas Monitor is now programmed to auto-calibrate
at the desired interval.
Setting Time that Ultima Gas Monitor Auto-calibration is to begin:
1. Press the SEND button.
• The display prompts SEND?
2. Press the CAL button.
• The display prompts: Sel Cal Action +.
3. Press either the + or - button and scroll to the StartHr of Cal
display message.
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MSA Ultima Series Specifications

General

Display	LCD with backlight
Communication Ports	RS-485, Modbus RTU
Measurement Range	Depends on sensor connected
Accuracy	Depends on sensor connected
Outputs	relays
Certifications	UL