Description
Spirax Sarco PA20 preamplifier is designed for Spirax Sarco capacitive sensors. It amplifies the measured capacitance and converts it into a voltage output proportional to level, making it compatible with all Spirax Sarco voltage-input controllers and transmitters. The unit features an austenitic stainless steel tube body that screws onto the sensor, a DIN43650 plug with a Pg11 cable gland, and three sensitivity settings for different sensor lengths. Its compact, robust design allows removal or replacement without disturbing the sensor and requires no special maintenance.
Limitations
| Item | Details |
|---|---|
| Maximum ambient temperature | 70℃ |
| Maximum cable length | 100m |
Technical Data
| Item | Details |
|---|---|
| Voltage | 15 - 36Vdc |
| Maximum current required | 10mA |
| Output voltage | 1 - 6Vdc |
| Output resistance | 100Ω |
Weight
Approximately 0.25kg
Materials
| No. | Component | Material |
|---|---|---|
| 1 | Tube body | Austenitic stainless steel ASTM A582 303 |
| 2 | Plug | Polyamide |
| 3 | Plug gasket | Silicone rubber |
| 4 | O-ring | Nitrile rubber |
Installation
Screw PA20 onto the capacitive sensor and tighten by hand. The O-ring provides a watertight seal. Each product is supplied with detailed installation and maintenance instructions. Do not install outdoors without protective equipment.
Maintenance
No special maintenance is required; however, boiler level control systems require periodic inspection.
Product Description
PA20 preamplifier for Spirax Sarco capacitive sensors, featuring a threaded stainless steel tube body, DIN43650 connector, and Pg11 cable gland.
Ordering Information
Example: 1 - Spirax Sarco PA20 preamplifier.