Meriam M201 Rotary Gas Meter Tester - Manual (Page 5)

Keystroke Display
1. Turn unit on using the
ON/Off key. Top line reads “ ‘Hold’ to
Test”, Bottom line
displays live Differential
Pressure value
2. Press the Prgm key. Top line reads “Program
Mode,” Bottom line
reads “Unit Select”
3. Press the ▲ arrow
key. Top line reads “Program
Mode”, Bottom line
reads “Mode Select”
4. Press the ► arrow
key. Top line reads “Mode
Select”, Bottom line
reads current mode,
Enhanced or Legacy
5. To retain the display
mode, press the Prgm
key and proceed to Step
7. Top line reads “Program
Mode”, Bottom line
reads “mode Select”
6 a. To change the
displayed Mode, press
the ▲ or ▼ arrow key. Top line reads “Mode
Select”, Bottom line
displays the new mode
option, Legacy or
Enhanced
6 b. To retain the
displayed mode, press
the Prgm key. Top line reads “Program
Mode”, Bottom line
reads “Mode Select”
7. Press the ◄ arrow
key. Returns to Measure
Mode
page 5 of 10 www.meriam.com
Addendum No. 9R124-IR
June, 2010
Mode Select - Enhanced or Legacy
The enhanced M201 (shipping since June 1, 2010), includes a
Mode Select option in the program menu for Legacy or Enhanced
operation. The user chooses which mode to use. See the “M201
Legacy vs. Enhanced Comparison Table” at the end of this manual
addendum for a comparison of features and displays.
To configure the M201 for either Legacy or Enhance mode
operation, follow the steps shown on below.