Ashcroft 1133 Differential Pressure Gauge
An economical instrument designed to measure pressure differences between two sources under low differential pressure or high static pressure conditions.
Product Specifications
Performance Characteristics
| Accuracy |
±2% ascending pressure full scale differential |
| Dial Sizes |
3½˝, 4˝, 4½˝, 6˝ |
| Ranges |
0-1 IWD to 25 IWD |
| Migration |
Zero |
| Maximum Process Temperature |
175° F (80° C) |
| Maximum Static Pressure |
500 psi |
| Weather Protection |
IP65 |
Connection Details
| Process Connection Location |
Lower, back, in-line |
| Process Connection Sizes |
¼ NPT Female (STD.), 1∕8 or ½ NPT Female Adapters (OPT.) |
Reed Switch Ratings
| Switches |
Contact Rating |
Current |
Voltage |
| SPST |
10 VA ac (rms) or dc (Max.) |
0.5 Amp ac (rms) or dc (Max.) |
100 Vac/Vdc (Max.) |
| SPDT |
3 VA ac (rms) or dc (Max.) |
0.3 AMP ac (rms) or dc (Max.) |
30 Vac/Vdc |
Material Composition
Wetted Components
| Component |
Material |
| Actuator |
Convoluted diaphragm |
| O-Rings/Diaphragm |
Buna-N |
| Body Material |
Aluminum or stainless steel |
| Additional Components |
Ceramic magnet & stainless steel spring |
Non-Wetted Components
| Component |
Material |
| Case Material |
Stainless Steel |
| Window |
Glass (STD.), safety glass or plastic (OPT.) |
Model 1133 Features: Available in 3½˝, 4˝, 4½˝, and 6˝ dial sizes for versatile application requirements.