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Flexible single lead probe
with chuck.
More anchoring options possible. |
Typically the transmitter is top mounted with flanged or threaded tank connection, but the probe can also be installed at an angle of up to 90o from vertical. It is also possible to turn the transmitter housing in any direction.
The probe must be hung, fully extended, through the entire distance where level readings are desired. To get the best possible performance, the following must be considered before installing the transmitter:
- Filling inlets creating turbulence should be kept at a distance
- Max. recommended nozzle height is 4 in. (10 cm) + nozzle diameter
- Avoid physical contact between probes and agitators as well as applications with strong fluid movement unless the probe is anchored. If the probe can move to within 1 ft (30 cm) of any object during operation, then probe tie-down is recommended.
- In order to stabilize the probe for side forces, it is possible to fix or guide the probe to the tank bottom.
- Select probe length according to the required measuring range. The probe can be cut in field. However, there are some restrictions for the coaxial probe: Probes over 4.1 ft (1.25 m) can be cut up to 2 ft (0.6 m). Shorter probes can be cut to the minimum length of 1.3 ft (0.4 m).
- For optimal single lead probe performance in non-metallic vessels, the probe must either be mounted with a 2-inch / DN 50 or larger metallic flange, or a metal sheet with an 8-inch-diameter (200 mm) or larger must be used.
If there is a chance the probe comes into contact with a wall, nozzle or other tank obstruction, the coaxial probe is the only possible choice. Minimum clearance is given in the table below.
| |
Coaxial |
Rigid Twin Lead |
Flexible Twin Lead |
Rigid Single Lead |
Flexible Single Lead |
| Recommended nozzle diameter |
Enough space to fit the probe |
4 in. (10 cm) or more |
4 in. (10 cm) or more |
6 in. (15 cm) or more |
6 in. (15 cm) or more |
| Min. nozzle diameter (1) |
Enough space to fit the probe |
2 in. (5 cm) |
2 in. (5 cm) |
2 in. (5 cm) |
2 in. (5 cm) |
| Min. clearance to tank wall or obstruction (2) |
0 in. (0 cm) |
4 in. (10 cm) or more |
4 in. (10 cm) or more |
4 in. (10 cm) if smooth metallic wall.
12 in. (30 cm) if disturbing objects, rugged metallic or concrete / plastic wall |
4 in. (10 cm) if smooth metallic wall.
12 in. (30 cm) if disturbing objects, rugged metallic or concrete / plastic wall |
| Min. pipe / bypass diameter |
1.5 in. (3.8 cm) |
2 in. (5 cm) (3) |
Consult factory |
2 in. (5 cm) (4) |
Consult factory |
(1) Requires special configuration and settings of Upper Null Zone
(2) Minimum clearance from tank bottom for the coaxial and rigid single probes is 0.2 in. (5 mm)
(3) The centermost lead must be at least 0.6 in. (15 mm) away from the pipe / bypass wall
(4) The probe must be centered in the pipe / bypass
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