High-Low Direct Dial Pilots for Control Systems
 Weatherford’s dial-adjustable pilots offer accurate, reliable operation and feature full stainless steel construction to insure years of dependable operation even in the most severe applications. To further protect each pilot from the elements, every pilot is mounted in a lockable weather-tight fiberglass or 316 SS case. Models are available to sense a wide range of pressures to 10,000 PSI (689.5 BAR). Standard supply and output pressure is 30 PSI (2.1 BAR), with other pressures available.
Weatherford’s high-low direct dial pilots include the following options:
- Single or dual porting
- Facility manual reset
- Indicating pressure gauges
- Adjustable setting dials
- Pressure sensing ranges
- Extreme corrosive applications
- Various mounting options
| Pilot Models |
| Service |
SDA™ |
SDE™ |
SDEP™ |
| Standard, H2S, and CO2 |
876-32 |
876-41 |
876-45 |
| Arctic |
876-33 |
876-42 |
876-46 |
Model SDA Pilot
This model features two independently operating pilots, one for high and one for low pressure. A fully instrumented panel is standard, showing sensed and output pressure. Two separate dials select high and low pressure trip points.
| Nominal supply pressure |
30 PSI (2.07 BAR) |
| Low set point repeatability |
1% full scale |
| High set point repeatability |
1% full scale |
Hysteresis dead band (trip or reset) when
output signal restored automatically |
5% |
| Weight |
18.5 lbs (8.4 kg) |
| Operating temperature |
| Standard, H2S, CO2 |
-20° to 180°F (-29° to 82°C) |
| Arctic |
-75° to 180°F (-60° to 82°C) |
| Dimensions |
| Stainless steel |
12.5” W x 13” H x 8” D |
| Fiberglass enclosure |
12.75” W x 12.75” H x 8” D |
| Model SDA |
PSI/BAR |
| 100 |
1,000 |
2,000 |
4,000 |
10,000 |
| Maximum Test Pressure |
160
11 |
1,500
103.4 |
3,000
206.8 |
5,000
344.7 |
10,000
689.5 |
| Pressure Sensor Ranges |
15-100
1-6.9
10-50
0.7-3.4
6-25
0.4-1.7 |
100-1,000
6.9-68.9
50-500
3.4-34.4
25-250
1.7-17.2 |
200-2,000
13.8-137.9
150-1,500
10.3-103.4
100-1,000
6.9-68.9
50-500
3.4-34.4
25-250
1.7-17.2 |
600-4,000
41.4-275.8
600-3,000
41.4-206.8
600-2,000
41.4-137.9
400-1,000
27.6-68.9 |
1,600-10,000
110.3-689.5
600-4,000
41.4-275.8
600-3,000
41.4-206.8
600-2,000
41.4-137.9
400-1,000
27.6-68.9 |
| Sensing Gauge |
0-1,500
0-103.4 |
0-1,500
0-103.4 |
0-3,000
0-206.8 |
0-5,000
0-344.7 |
0-15,000
0-1034.2 |
Model SDE Pilot
The single pilot SDE model senses either high or low pressure. This pilot is fully instrumented with gauges for sensed and output pressure.
Model SDEP Pilot
This unit is the panel mountable version of the SDE pilot and is supplied without the instrument gauges and fiberglass case. The SDEP model is usually used in a control panel.
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