SVSEEx Visibility Sensors
Print a SVSEEx brochure (PDF)
Need a Quote?
Build your sensor with our Sentry Configuration Tool »
Key Features:
- ATEX Zone 1 hazardous area
- Ruggedized package
- 8 km (5 mile) visibility range
- Forward scatter measurement technique
- Ice-resistant “look down” geometry
- Flexible output options
- Simple installation and maintenance
| Sensor Specifications | |
| Performance | |
Range: Accuracy: Time Constant: Scatter Angle: Source: Outputs: |
15 m to 8 km +/- 10% RMSE 60 sec 42 deg nominal 880 nm LED 0-10 VDC analog standard 0-5 VDC analog optional Output Control Board optional with: 4-20 ma, 4-20 ma isolated, control relay(s), diagnostic relay Microprocessor Board optional with: RS-232, RS-422, RS-485, control relay, diagnostic relay |
| Power | |
DC: AC: |
12 or 24 VDC, 10 VA, factory set 230 VAC @ 500 VA for units equipped with optional external hood heaters |
| Physical | |
Weight: Dimensions: Mounting: |
40 kg (88 lb)
1170 mm W x 915 mm H x 560 mm D (46 in x 36 in x 22 in) Nominal 102 mm pipe, 122mm OD max (4 inch IPS pipe, 4.8 inch OD max) |
| Environmental | |
Temperature: Humidity: Protection: |
-20 to 60 C 0-100% IP66 (NEMA-4X) |
| Construction | |
Frame: Hardware: |
Aluminum with exterior powder coat paint for long durability in marine environment 316 grade stainless steel |
| Certifications | |
  |
This equipment is in compliance with ATEX Ex II 2GD EEx d IIB T5/T6 for use in areas of potentially explosive atmospheres. Applicable EC Examination Certificates include CESI 01 ATEX 036 and CESI 01 ATEX 027. This equipment is in compliance with the essential requirements and other provisions of Low Voltage Directives 73/23/EEC and 89/336/EEC as amended by Directive 93/68/EEC. |
Click on the images below to view the corresponding PDF file.
Applicability: |
A = Analog Output Sensor M = Serial Output Sensor A & M = Both Sensor Configurations |
|
P/N & Name |
Description / Applicability |
|
Power Options (-x) |
Provides the user with DC power options. User must select one power option to be set at factory: “E” 12 +/- 2 VDC “F” 24 +/- 2 VDC |
A & M |
Analog Output Options (-y) |
Provides the user with a range of analog output options. User may select one or more output options: “-1” 0-10 VDC analog output standard “-2” 0-5 VDC analog output optional “-A” Standard 4-20 ma current loop option with single-ended configuration. Operates over loop resistance up to 500 ohms. “-B” Isolated 4-20 ma current loop option for installations prone to ground loops. Operates over loop resistance up to 500 ohms.
|
A |
Relay Output Options (-z) |
Provides the EEx Sentry™ with analog control & diagnostic relays for simple control of fog horns. With this option, the “-1” 0-10 VDC Analog Output must be specified. Order the 3-Relay Output PCB P/N 30005 – option and select one or more of the options from the list below: “-C” Control relay output #1 with user selectable activate/deactivate set points. SPDT relay provides NO & NC dry contacts rated for 100 VDC @ 0.25A. “-D” Diagnostic relay output provides remote indication of sensor status. SPDT relay provides NO & NC dry contacts rated for 100 VDC @ 0.25A. “-E” Control relay output #2 with user selectable activate/deactivate set points. SPDT relay provides NO & NC dry contacts rated for 100 VDC @ 0.25A. |
A |
Serial Output Options (-z) |
Provides the EEx Sentry™ with a powerful microprocessor to perform user selected averaging, alarms, units of measure, calibration, etc. Order the Microprocessor PCB P/N 30013 – option and select one or more of the options from the list below: “-A” Serial ASCII RS-232 interface for distances up to 100 ft “-B” Serial ASCII RS-422 interface for distances up to 4000 ft “-C” Control relay output with user selectable activate/deactivate set points. SPDT relay provides NO & NC dry contacts rated for 100 VDC @ 0.25A. “-D” Diagnostic relay output provides remote indication of sensor status. SPDT relay provides NO & NC dry contacts rated for 100 VDC @ 0.25A. ”-F” Serial ASCII Multi-drop Addressable RS-485 interface for distances up to 4000 ft
|
M |
P/N 20104 Calibration Fixture |
|
A & M |
P/N 30023 Serial Test Cable |
Serial cable connects from local RJ11 jack on Microprocessor PCB to DB9 connector on user Laptop. Used for sensor set-up and calibration using the local port. 4-m (13 ft) long. |
M |
External Hood Heater Option “-h” |
|
A & M |
Applicability: |
A = Analog Output Sensor M = Serial Output Sensor A & M = Both Sensor Configurations |
|
Used during installation and maintenance of the sensor. Contains all items required to field calibrate the EEx Sentry™ in a foam lined attaché style carrying case. When installed on the sensor frame, it allows a known amount of light to be scattered from the transmitter to the receiver. Each Fixture is calibrated with its matching EEx Sentry™ and contains the same serial number.
The non-ATEX heaters are 23 x 40 cm silicone rubber surface heaters installed under both the TX & RX hoods. Each is rated for 250 VA operation at 240 VAC power and is thermostatically controlled. The thermostat is imbedded into the heater and designed to close at 4° C and open at 16° C. The power to the hood heaters must be capable of being turned OFF automatically under control of the local explosive gas monitoring system.