2
Operating Manual
IP4001, Rev CA
Mobrey Series VLS
March 2018
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8
1.0
Introduction
1.1
Overview
Mobrey vibrating rod level switches are suitable for low and high level indication of granules and
powders with a minimum 0.05 kg/dm
3
density such as cement, lime, sand, grain, feed, sugar, etc.
Dust Ex versions are available for using the instrument in an explosion-proof environment.
The vibrating rod is a mechanical resonant system, excited and kept in resonance by an electronic unit.
The medium to be measured, when reaching the vibration rod end, will damp the vibration. The change
in vibration intensity is sensed by an electronic unit, which, upon the elapse of the delay time, actuates
the output circuit.
1.2
Accessories
User manual (IP4001)
2 off 3-pole terminal blocks
1½-in, sealing, for BSP only
2 off M20x1.5 cable glands
1.3
Order code
K
Standard model with 1 x SPDT alarm relay
H
(1)
High temperature model with 1 x SPDT relay (not available with Extended Cable option)
B
R 1½-in. BSPT mounting
N
1½-in. NPT mounting
1
Standard length rod, 207 mm insertion length
3
Extended rod, 300-3000 mm insertion length
4
Cable extended, 1000-20000 mm insertion length
3
Aluminum Alloy housing, powder coated
9
As code 3, but with Remote Electronics
1Z
20-255 Vac / Vdc, no hazardous area approval
5A
20-250 Vac / 20-50 Vdc, ATEX Dust Certification II 1/2 D
/**** State rod or cable extension length in mm
1. Only for standard and rod extended versions.
