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

Installation, Operation &
Maintenance
Sentry Series
Models T01, T02 (Vapour pressure temperature
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 standard to which the product is conforms
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– T0 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 and qualified personnel in 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 installation check that the instrument
characteristics comply
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 or solvents that
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
Temperature exceeding the adjustable range can be
allowed up to the max temperature 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 exceed the limits specified on tables below
Process temperature
For the remote mounted flameproof and intrinsically
safe instrument model
applicable:
Temperature Ambient
Class temperature range
T6 -30°C to +65°C or
-60°C to +65°C
T5 or T100
-30°C to +80°C or
For the direct mounted flameproof and intrinsically safe
instrument model *T01 the following table is applicable:
Temperature Ambient
Class temperature range
T6 -30°C to +65°C or
-60°C to +65°C
T5 or T100
-30°C to +80°C or
-60°C to +80°C
T4 or T135
with process and plant
*T02*the following table is
Max process Max electrical
temperature at bulb loads
(resistive loads)
See nameplate max
15 A, 250 V a.c.
temp.
& 5 A, 30V d.c.
Max process Max electrical
temperature at bulb loads
85°C
15 A, 250 V a.c.
& 5 A, 30V d.c.
100°C
110°C