AccuSafe - For continuous gas monitoring at one or more points

Click Picture for Larger AccuSafe Unit Image

Interscan’s AccuSafe takes the familiar “Point sensor reporting to a controller” design approach to the next level. AccuSafe consists of up to ten sensor modules reporting to a single controller. Since the communications are Modbus TCP/IP, there is no limit on the distance between sensor modules and the controller.

What’s more, each sensor module is provided with an integral sample draw pump, for a quicker and more reliable response. And, data acquisition is built right in. No additional software is needed. Temperature and relative humidity sensors are also included.

As an option, the Sensor Unit can be provided with an integral concentration display and alarm indicators. Remote annunciators are also available.

Parametric search and print your own specific data sheet, for all AccuSafe models

Optional Web Control—Offering two approaches

1. Using our software (included), you can manage multiple controllers over your local network connection. Specifically, from any Web browser, you can…

Search and view available AccuSafe controllers in your network
Update controller or sensor unit software
Create, backup, and restore control panel configurations
Download recorded sensor data from any controller
Configure MQTT communication settings

2. Add even more capability with the AWS (Amazon Web Services) Web Control option. Think of this as a powerful virtual controller. We work with you to configure the perfect solution for your application. The AWS Web Control will contain the libraries and scripts used to browse data, edit programmed routines, and alarms, and view real time sensor conditions.

Here is a screen layout set up for a customer. There is great flexibility in how these can be configured.

With either option, any authorized individual can view concentration and alarm status data for every monitored sample point, on their cell phone, tablet computer, or any suitable device. As such, “mimic” displays can be set up around the monitored area.

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AccuSafe Specs

Control Unit

Enclosure: Powder coated aluminum
Weight: 1.94lb (0.88kg)
Dimensions: 6.77in x 4.06in x 2.17in (172mm x 103mm x 55mm)
Communication: Modbus TCP & RTU (RS485)
User Interface: 5” Touch Display, remote web browser, desktop app, MQTT API
Operating environment: Clean, dry, no extreme temperatures. (Typical control room environment)
Measuring rate: Configurable
Data storage: 8GB
Power input: 5VDC
Alarm: Sound and email alarms; SMS (text message) notification
Integration: Configurable I/O for any compatible sensors/actuator via Modbus, configurable control algorithm (PID, ON/OFF, Open-Loop)

Sensor Unit

Principle of Operation: Electrochemical
Accuracy: ±2% of reading ±1 least significant digit
Enclosure: Powder coated aluminum, rated to IP68
Weight: 2.16lb (0.98kg)
Dimensions: 6.77in x 4.06in x 2.17in (172mm x 103mm x 55mm)
Communication: Modbus RTU (RS485), slave-only
Operating environment: 32°F – 122°F (0°C – 50°C), non-condensing
Measuring rate: Continuous
Power input: 12VDC

: Sensor Module

Measuring Range / Resolution

Measuring Range	Resolution
0-2000 ppm	1 ppm
0-1000 ppm	1 ppm
0-500 ppm	1 ppm
0-200 ppm	1 ppm
0-200.0 ppm	0.1 ppm
0-100.0 ppm	0.1 ppm
0-50.0 ppm	0.1 ppm
0-20.0 ppm	0.1 ppm
0-5.00 ppm	0.01 ppm
0-2.00 ppm	0.01 ppm
0-1.00 ppm	0.01 ppm
NOTE: Not all measuring ranges are available for all gases. Please refer to specific ordering information, below.

Ordering Information:

AccuSafe Series Continuous Gas Monitoring Systems

Gas	Measuring Range (ppm)	AccuSafe Model No.
NH₃ ammonia	0+500.0 0-50.0 0-10.0	AS10-500.0m AS10-50.0m AS10-10.0m
Br₂ bromine	0-20.0 0-5.00	AS70-20.0m AS70-5.00m
CO carbon monoxide	0-2000 0-200.0 0-100.0 0-50.0	AS14-2000m AS14-200.0m AS14-100.0m AS14-50.0m
Cl₂ chlorine	0-20.0 0-5.00	AS34-20.0m AS34-5.00m
ClO₂ chlorine dioxide	0-20.0 0-5.00 0-2.00	AS33-20.0m AS33-5.00m AS33-2.00m
C₂H₄ ethylene	0-2000 0-200.0 0-20.0 0-5.00	AS07-2000m AS07-200.0m AS07-20.0m AS07-5.00m
C₂H₄O aka EO or EtO ethylene oxide	0-50.0 0-20.0 0-5.00	AS20-50.0m AS20-20.0m AS20-5.00m
HCHO formaldehyde	0-20.0 0-2.00	AS16-20.0m AS16-2.00m
H₂NNH₂ CH₃NHNH₂ (CH₃)₂NNH₂ hydrazine(s) ¶	0-20.0 0-2.00	AS18-20.0m AS18-2.00m
H₂ hydrogen	0-2000 0-500	AS02-2000m AS02-500m
HBr hydrogen bromide	0-20.0 0-5.00	AS80-20.0m AS80-5.00m
HCl hydrogen chloride	0-20.0 0-5.00	AS36-20.0m AS36-5.00m
HCN hydrogen cyanide	0-50.0 0-20.0 0-5.00	AS28-50.0m AS28-20.0m AS28-5.00m
H₂O₂ hydrogen peroxide	0-1000 0-200.0 0-50.0 0-20.0 0-5.00	AS09-1000m AS09-200m AS09-50.0m AS09-20.0m AS09-5.00m
H₂S hydrogen sulfide	0-500 0-200.0 0-20.0 0-1.00	AS17-500m AS17-200.0m AS17-20.0m AS17-1.00m
NO nitric oxide	0-2000 0-200.0 0-20.0 0-5.00	AS54-2000m AS54-200.0m AS54-20.0m AS54-5.00m
NO₂ nitrogen dioxide Also known as N₂O₄ nitrogen tetroxide	0-50.0 0-20.0 0-5.00	AS15-50.0m AS15-20.0m AS15-5.00m
O₃ ozone	0-50.0 0-20.0 0-5.00	AS48-50.0m AS48-20.0m AS48-5.00m
C₂H₄O₃ aka PAA peracetic acid Also known as peroxyacetic acid	0.50.0 0-20.0 0-5.00	AS89-50.0m AS89-20.0m AS89-5.00m
C₃H₆O aka PO or PrO propylene oxide	0-50.0 0-20.0 0-5.00	AS32-50.0m AS32-20.0m AS32-5.00m
SO₂ sulfur dioxide	0-200.0 0-50.0 0-20.0 0-5.00	AS24-200.0m AS24-50.0m AS24-20.0m AS24-5.00m

1¶ There is not a separate analyzer available for each of these compounds, and the sensor does not respond equally to all hydrazine species. The analyzer must be calibrated with the specific hydrazine compound of interest.

Special ranges available on request.

AccuSafe – For continuous gas monitoring at one or more points