delta-mobrey Sentry Series Installation, Operation & Maintenance Instructions Manual

Installation, Operation &
Maintenance
Sentry Series
Models P01, P02, P03 (Pressure Switches)
SAFETY INSTRUCTIONS

Information ..points out useful tips,
recommendations and information for
efficient and trouble-free operation.
CAUTION! ..indicates a potentially dangerous
situation that can result in light injuries
or damage to equipment or the
environment, if not avoided.
WARNING! ..indicates a potentially dangerous
situation that can result in serious
injury or death, if not avoided.
WARNING! ..identifies hazards caused by electric
power. Should the safety instructions
not be observed, there is a risk of
serious or fatal injury.
WARNING! ..indicates a potentially dangerous
situation that can result in burns,
caused by hot surfaces or liquids, if not
avoided.
WARNING! ..indicates a potentially dangerous
situation in the hazardous area that can
result in serious injury or death, if not
avoided.
Ex applications ..special instructions for Ex applications.
CONTENTS

Foreword

Allowed over range

•

Ambient Temperature

•

Process Temperature

•
Tools To Be Use For Checking And Adjusting Set Point
•
Operating principle
Marking
List Of Standards To Which The Product Conforms To
Special Conditions Of Use
Installation
Mounting
•
Electrical Connections
•
Wiring
•
Earthing Connections
•
Operation
Adjustments
•
Calibration
•
Periodical Calibration Check
•
Safety Integrity Level (SIL) instrument and installation require-
ments
Commissioning
Inspection And Maintenance
Periodical Visual Inspection
•
Periodical Functional Verification
•
Replacement Parts
Warranty
Decommissioning
Disposal
Model Code
Pag.1 of 7
Instructions
www.delta-mobrey.com
IOM-SENTRY– P0 Rev.A2: Nov 2021
Foreword
The unit is manufactured, checked and supplied in
accordance with our published specification, and when
installed and used in normal or prescribed applications,
with the lid in place and within the parameters set for
mechanical and electrical performance, will not cause
danger or hazard to life or limb.
Warning: Units must be selected and installed by
suitably trained
accordance with appropriate codes of practice so
that the possibility of failure resulting in injury or
damage caused by misuse or misapplication is
avoided.
Warning: before
instrument characteristics comply with process and
plant requirements
Warning: The users attention is drawn to the fact
that, when the unit is 'live' with respect to electrical or
pressure supplies, a hazard may exist if the unit is
opened or dismantled
Warning: where any special condition of the product
has been required as identified by the last 4 digits of
the part number, follow the necessary safety
instruction for a correct installation.
If the equipment is likely to come into contact with
aggressive substances, suitable precautions should be
taken that prevent it from being adversely affected, thus
ensuring that the type of protection is not compromised.
Aggressive substances: e.g. acidic liquids or gases that
may attack metals
may affect non-metallic materials. Suitable precautions:
e.g. regular checks as part of routine inspections or
establishing from the material's data sheet that it is
resistant to specific chemicals.
Allowed over range
Pressure exceeding the adjustable range can be allowed
up to the max pressure stated on nameplate. The voltage
and current limits for the microswitch must not be
exceeded. (see fig. 2&3).
Transitory electrical over ranges can have a destructive
effect on the microswitch
Ambient Temperature
The surface temperature of the instrument is influenced
by the process temperature, electrical working conditions,
installation and environmental. Special attention must be
taken to avoid exceeding the limits specified on table
below (i.e. remote mounting, valves, siphons, diaphragm
seals. See Mounting).
Process temperature
For the instrument model P0* the following table is
applicable
Temperature Ambient
Class temperature
range
-30°C to +65°C or
T6 or T85
-60°C to +65°C
-30°C to +80°C or
T5 or T100
-60°C to +80°C
and qualified personnel
installation check that
or solvents
Max process Max electrical
temperature loads
at the process (resistive loads)
connection
65°C
15A, 250 V a.c.
& 5A, 30V d.c.
80°C
in
the
that