McNab Model AP-VIS Scatter Monitor/Controller |
|
Interior of Unit
Printable Version
|
Special Features:
- Reduced cost
- Easy installation, no Indicator/Controller (I/C) panel
- Second cabinet not required for water-proofing
- Available in proven sanitary (non-o-ring) design
- Air purge or air driers for moisture control in optics
- Relative humidity (RH) indicator to alert potential window fogging
- 10 times illumination of LED
- Avoids lamp aging resistance drift
- Avoids field inter-connecting cable calibration
- Automatic correction of lamp darkening
|
|
Typical Configuration
Explosion-proof housing
Narrow diameter pipe
|
How it Works
 The Model AP-VIS Scatter Transmitter is a compact sensor with
integrated electronics. It measures the amount of light received by the
photoelectric scanner from the light scatter of suspended particles. It
continuously monitors suspended solids interface by measuring the amount
of light scatter in the process pipe. The optical cell “no o-ring” sealing
meets sanitary requirements as set forth by EHEDG.
Model AP-VIS provides immediate center-of-the-pipe measurement at full
pressure and temperature, eliminating the delay of off-line sampling. The
information is transmitted to the customer computer or process controller
using a 4-20 mA analog signal. Internal relays are available to open or
close valves when designated concentration levels are reached.
Installation involves mounting optical ferrules on a vertical run of
pipe (with upward flow) where the process measurement is needed. Visual
inspection of the sample chamber can be done at any time during operation
by removing the photo sensor head from the optical cell and looking
through the optical cell like a sight glass.
|
| Material of Construction: |
Stainless steel, ASTN 316L/DIN 4435 |
| Seals: |
Ethylene propylene (EPDM), Kalrez, etc. |
| Protective Enclosure: |
NEMA 6 (submersible), IP68 Mounting Sanitary flange, 2 inch
Tri-clamp, or McNab standard |
| Operating Temperature: |
15 to 225° F (-10 to 115° C) |
| Operating Pressure: |
150 psig, 10 bar |
| Power Requirements: |
117 or 220 VAC, 50/60Hz, 50 watts (max.) |
| Standard Output: |
0-10 Volt DC |
| Optional Outputs: |
4-20 mA Ground Isolated, internal or user supplied
Excitation Voltage. (Up to 30 volts maximum) |
| Relays: |
2 SPST closures, 115/230 VAC (only), 0.10 Amp max, or 1
SPDT, 115/230 VAC/VDC, 5 Amp electro-mechanical |
| Sensitivity: |
Adjusted per application |
| Weight: |
20 lbs (9.1 kg.) max |
| Specifications may be changed or
improved as necessary. |
PATENT PENDING
A97-03D
|
|
|
McNab
accepts all major credit cards.
