1126P-2 Portable Indicator
     The 1126P-2 is designed for portable applications. Typical examples are periodic measurements of the pressure drop across filters, balancing of flow rates in heating and cooling systems and checking of back flow prevention devices. Meriam’s 1126P-2 consists of an 1126 D/P Indicator with 3-valve manifold and piping, 2 hoses and quick  disconnects. Each instrument system is assembled as a complete package with all the accessories mounted in a rugged, light weight case. When used as a flow measuring device, the instrument normally comes with a 0-100% square root scale. With all flow elements designed for the same differential, multiplying the scale reading by the primary element’s full flow design value gives readings directly in flow units. Scales in flow units, inches of H20, PSI and metric units are also available.

Features
1020 & 1120 Accuracy
30” w.c. range 1.50% FS
50” w.c. thru 500 PSID range 0.75% FS
Option: 100” w.c. thru 50 PSID range 0.50% FS

1220 Accuracy
Before switch activation 0.75% FS
At switch activation point 2.00% FS
After switch activation 1.50% FS

Zero Elevation
100% of range (150 PSID maximum)

Suppression
15% of range with 270° pointer travel

Operating Temperature
-60°F to +200°F

Full Scale Displacement
30” w.c. thru 130” w.c. range .19 Cu. In.
135” w.c. thru 60 PSID range .12 Cu. In.
75 PSID thru 500 PSID range .06 Cu. In.

1220 Switch Type
Snap action SPDT

1220 Switch Setting Accuracy
1.00% FS

1220 Dead Band
1 switch (nominal) 7% FS
2 switch (nominal) 10% FS

1220 Switch Setting
Increasing -10 to 100% of differential or 10” of water whichever is greater
Decreasing - 5% or 5” of water whichever is greater
Between set points -15% of FS minimum

1220 Switch Rating
5 amps at 125V or 250V AC
3 amps inductive or 5 amps resistive at 30VDC

Mounting Dimensions
Model 1020 Request File No. 1020:420
Model 1123 Request File No. 1123:420
Model 1124 Request File No. 1124:420
Model 1126 Request File No. 1126:420
Model 1224 Request File No. 1224:420
Model 1226 Request File No. 1226:420
Model 1226X-1 Request File No. 1226X-1:420
Model 1226X-2 Request File No. 1226X-2:420

Ordering Specifications

To order any one of Meriam’s Bellows Gauges, custom made to your specifications, please contact your Meriam
sales representatives with the following information:

• Model Number
• Housing Material
• Safe Working Pressure
• Bellows Material
• Differential Range
• Type of Scale
(Linear or Sq. Rt.)
• Type of Mounting