Watts HF Scientific Air Sentinel III User Manual

Installation Instructions
Air Sentinel III
Purge Controller - Model 110046
IS-HF-AirSentinelIII-100123 Rev 0 2020-09
Table of Contents
Understanding Safety Information .......................................................2
Declaration of Conformity ...................................................................3
Introduction to the Unit .......................................................................4
Overview.........................................................................................4
Use in Explosive Environments Safely .............................................4
Specifi cations .................................................................................4
Instrument Labels ...........................................................................4
Orientation ......................................................................................4
Dimensions ..................................................................................... 4
Installation and Commissioning ...........................................................5
Air Supply .......................................................................................5
Electrical Power Input Connections ................................................. 5
Electrical Power Output Connections .............................................. 5
Electrical Alarm Connections ..........................................................5
Mechanical Mounting ...................................................................... 5
Operation ...........................................................................................6
Startup ...........................................................................................6
Indicator Lamps .............................................................................. 6
Maintenance Bypass Operation ......................................................6
Programming ...................................................................................... 6
Warranty ............................................................................................. 7

Watts HF Scientific Air Sentinel III Specifications

General

Model	Air Sentinel III
Display	LCD
Measurement Range (RH)	0-100% RH
Parameters Monitored	Temperature, Humidity, Airflow
Power Supply	24 VAC/DC
Outputs	Analog (0-10V, 4-20mA), Relay
Communication Protocol	Modbus
Resolution	0.1% RH (Humidity)
Operating Temperature	32 to 122°F (0 to 50°C)
Operating Humidity	0 to 95% RH, non-condensing

Summary

Understanding Safety Information

General Warning and Manual Reference

General warning about reading the manual before use to prevent injury or damage.

Safety Alert Symbol

Explains the safety alert symbol used to identify potential hazards and serious injury.

Pictorial Alerts

Describes pictorial symbols alerting to manual reading and electrical hazards.

Danger Symbol

Identifies hazards that, if not avoided, will result in death or serious injury.

Warning Symbol

Identifies hazards that, if not avoided, could result in death or serious injury.

Caution Symbol

Identifies hazards that, if not avoided, could result in minor or moderate injury.

Notice Symbol

Identifies practices that could result in property damage or equipment damage.

Declaration of Conformity

Introduction to the Unit

Overview

Provides a general introduction to the Air Sentinel III purge controller and its function.

Use in Explosive Environments Safely

Safety precautions for operating the instrument in potentially hazardous atmospheres.

Specifications

Lists the detailed technical specifications of the Air Sentinel III unit.

Instrument Labels

Details the various labels applied to the enclosure for identification and warnings.

Orientation

Illustrates the physical orientation and port locations of the Air Sentinel III.

Dimensions

Provides the physical dimensions and measurements of the Air Sentinel III unit.

Installation and Commissioning

Air Supply

Specifies the requirements for clean, dry air supply for proper operation.

Electrical Power Input Connections

Instructions for safely connecting the main power supply to the unit.

Electrical Power Output Connections

Details on how to connect external devices to the unit's controlled power output.

Electrical Alarm Connections

Explains the connections for the unit's relay outputs indicating alarm conditions.

Mechanical Mounting

Instructions and diagrams for physically mounting the Air Sentinel III to an enclosure.

Operation

Startup

Describes the initial power-up sequence and automatic purge cycle of the unit.

Indicator Lamps

Explains the meaning and function of the unit's status indicator LEDs.

Maintenance Bypass Operation

Guidance on safely using the maintenance bypass key to disable safety features.

Programming

Information on factory programming and settings for the purge timer and flow.

Warranty