What products are involved?
SRV Viscometer and SRD Density meter and viscometer sensors.
What is the purpose of this article?
Showcase suitable installation points of Rheonics SR- sensors in tank and pipeline, useful accessories and additional installation considerations.
Rheonics SRV and SRD installation criteria
Rheonis Type-SR sensors have two main criterias for installation, these are:
- Immerse the sensing element and area in the fluid
- Avoid deposits, dead and stagnation zones around the sensing area
Rheonics SRV sensor probes have the same resonator across all its variants (short, flush, long, slimline, reactor). Same happens with the SRD. So these installation criterias apply for all sensor probe variants.
Figure 1: Rheonics SRV and SRD installation criterias.
Based on these considerations, Rheonics Type-SR inline viscometer and density meter have great flexibility at installation with design variants and customizable process connections. In addition, Rheonics accessories can be used to mount the probes in different scenarios.
Installation Examples
Next table specifies the sensor variants best suited, for each installation scenario, with a check mark. Some cells have a Rheonics code for a specific accessory useful for the installation.
Figure 2: Installation point examples.
Table 1: General Installation
| Description | Location | Thread X1-34N | Thread X1-12G | X2 Custom Flange | X3 Tri-Clamp | X4 Flush | X5 Long Insertion |
|---|---|---|---|---|---|---|---|
| 1. Top of tank/Long insertion* |  | ✓ | - | - | - | - | ✓ |
| 2. Tank wall |  | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3. Jacketed wall** |  | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ Useful for big jacket sizes |
| 4. Bottom tank |  | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 5. Tee piece - Long standpie |  | - | - | - | - | - | ✓ |
| 6. Pipe (2" or above)*** |  | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 7. Elbow |  | ✓ | ✓ | - | ✓ | - | ✓ |
| 8. Small pipe (DN38 or less) |  | ✓ | ✓ | - | - | ✓ | - |
*If fluid fills the tank/vessel completely, a long insertion is not mandatory and all variants can be used from the top.
**Requires a cut in the jacket
***2” ANSI Standards (OD 60.3mm). For most 2” pipes the ID size may be close to 50mm. Care should be taken to ensure installation criteria (Figure 2) specially for high-vicosity fluids. Alternatively, use an elbow installation with the FET-15T(-20T or -20X).
Notes:
- For flush (X4) and short (X1, X2 and X3) SRD, density deviation may happen if there is a difference between ambient and fluid temperature. This is avoidable with a long immersion probe (X5).
- For small pipes also consider a elbow installation with SLP (-X6) and RP (-X7) sensor variants.
- Review all SRV variants and SRD variants.
- Visit Rheonics accessory table.