Pressure Transmitter- Series 634A
4-20 mA signal. Two, three or four wire operation. Ranges to 6000 psi.
The Dwyer Series 634A pressure transmitters sense a single pressure relative to atmosphere and convert that into a 4-20 mA output signal. Six models cover ranges from 0-5 to 0-6000 psi. Zero and span adjustments are easily accessible yet fully protected within side housing. The tough filled nylon case includes a convenient two hole surface mounting arrangement. These devices can be used with air or compatible gases or liquids. Though compact in size and lightweight, overall accuracy is ±2%.
PHYSICAL DATA.
| General | |
| Maximum Pressure: | 1.5 x maximum range |
|---|---|
| Media Compatibility: | Air and non-corrosive gases and liquids |
Electrical |
|
| Power Supply: | 13-35 VDC - 2, 3 or 4 wire; 18-26 VAC-4 wire |
| Connections: | 4 screw term. block |
| Output Signal: | 4-20 mA DC (limited at 38 mA DC) |
| Loop Resistance: | dc, 0-1100 OHMS; AC, 0-1130 ohms |
| Current Consumption: | DC, 38 mA max. AC; 76 mA max. |
Materials |
|
| Mineral and glass filled nylon housing, high impact acrylic cover, beryllium copper Bourdon tube, brass pressure connection. | |
Mechanical |
|
| Weight: | 8 oz. |
| Span and Zero Adjustments: | Protected potentionmeters, located in auxiliary housing |
| Pressure Connection: | 1/8" NPT female |
Performance at 70°F |
|
| Zero Output: | 4 mA DC |
| Full Span Output: | 20 mA DC |
| Accuracy: | ±2% of full span output |
| Span and Zero: | Adjustable to 0.05% of full span |
| Warm-up Time: | 10 minutes |
Environmental |
|
| Operating Temperature: | 20° to 120°F |
| Thermal Errors: | ±1%/50°F typical |
Standard Accessories |
|
| (2) #10 x 1" pan head sheet metal screws | |
MODULE MODELS
| Model Number |
Ranges, PSI | ||
|---|---|---|---|
| Stocked | Minimum | Maximum | |
| 634A-0 | 0-10 | 0-5 | 0-20 |
| 634A-1 | 0-30 | 0-20 | 0-60 |
| 634A-2 | 0-100 | 0-50 | 0-200 |
| 634A-3 | 0-500 | 0-200 | 0-800 |
| 634A-4 | 0-1000 | 0-800 | 0-2000 |
| 634A-5 | 0-2000 | 0-1500 | 0-6000 |