

Oil Level Regulator
M Series
Affordable alternative to the E Series.
Cast aluminum housing, 3 switching contacts for a wide range of applications.
Large sight glass for visual monitoring of the oil level and for adjusting the individual switching points.
Category: E-Systems, Oil Level Regulator, Oil Sensors
Brand: ETS
Description
M21 / AF-125 – I Series
Analog transducer with a 125 mm measuring range and a resolution of 10 mm. The transducer (output signal: 4 – 20 mA) is mounted on the M21 housing to save space. The 360° rotatable cube connector allows for easy electrical connection. Optionally, up to two additional digital level switches can be installed.
Technical data
| M21 Series | Oil Level Regulator with Level Switches |
|---|---|
| M21 Series … F | Oil level controller with analog sensor, measuring range: 125 mm, resolution: 5 mm |
| M21 Series … I | Oil level controller with analog sensor, measuring range: 125 mm, resolution: 10 mm |
Product variants
| 2 contacts, MAX-MIN, 4 m PVC cable | M21/2-60 |
|---|---|
| 2 contacts, MAX-MIN, 1 m PVC cable | M21/2-66 |
| 2 contacts, MIN-MIN, 4 m PVC cable | M21/2-85 |
| 3 contacts, MAX-MIN REFILL, 1 m PVC cable | M21/3-68 |
| 3 contacts, MAX-MIN REFILL, 4 m PVC cable | M21/3-69 |
| 3 contacts, MAX-MIN REFILL, 1 m silicone cable | M21/3-72 |
| 4 contacts, MAX-MIN-FILL-AUX, 1 m PVC cable | M21/4-70 |
| 4 contacts, MAX-MIN-FILL-AUX, 4 m PVC cable | M21/4-71 |
| 1 analog sensor, without an additional switch | M21/AF-125-F |
| 1 analog sensor, including a MIN switch | M21/AF-125-F-90 |
| 1 analog sensor, including MAX switch | M21/AF-125-F-91 |
| 1 analog sensor, including MIN and MAX switches | M21/AF-125-F-92 |
| 1 analog sensor, without an additional switch | M21/AF-125-I |
| 1 analog sensor, including a MIN switch | M21/AF-125-I-90 |
| 1 analog sensor, including MAX switch | M21/AF-125-I-91 |
| 1 analog sensor, including MIN and MAX switches | M21/AF-125-I-92 |