varia Intelligent Gas Detector Instruction Manual

: October 30, 2023
: Varia

Table of Contents

Intelligent Gas Detector
Technical specifications
Complementary items
References
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Intelligent Gas Detector
Instruction Manual varia Intelligent Gas Detector

Intelligent Gas Detector

An intelligent gas detector developed in co-operation with users
Based on what our users had to say, we have developed a modern, user- friendly gas detector. The detector is easy to install and connect to existing automation solutions. It is also compatible with other systems. The Varian display is clear and bright. The detector may also be used as a local alarm.
Sustainable development has been taken into account in the materials chosen for the detector. The Varia detector is modular in construction and its maintenance is cost-effective. This multipurpose detector is suitable for use in any safe area, even in the most demanding industrial conditions.
The Varia is a product of Finnish design, to which the Association for Finnish Work has granted the Design from Finland mark.![varia Intelligent Gas Detector

fig](https://manuals.plus/wp-content/uploads/2023/06/varia-Intelligent-Gas- Detector-fig.jpg) Environmental specifications
Operating humidity range (no condensation): Gas specific Air pressure: Normal air pressure ±20%

Technical specifications

Display: 3.5” backlit display
Supported measurement detection principles: Electrochemical, catalytic and NDIR
Output Signals: 4–20mA, 0–20mA, 2–10V, 0–10V
Fieldbus: Modbus RTU
Relay contacts: 2xrelay (230 VAC/24 VDC, 1A) freely programmable to either NO or NC. Alarm levels freely programmable.
Operating voltage: 16…36 VAC/VDC
Cabling: 4-wire (galvanically isolated supply and output) or 3-wire connection. e.g. (JAMAK 2x(2+1)x0.5mm2 or equivalent)
Power consumption: max. 100mA/24 VDC, 350mA/24 VAC (electrochemical) max. 120mA/24 VDC, 350mA/24 VAC (NDIR) max. 100mA/24 VDC, 350mA/24 VAC (catalytic)
Mounting possibilities: Ceiling, wall, duct or pipe
Mounting: With 2–4 screws
IP rating: IP 54 (IP56 with Stainless steel housing)
Measurements: 121 mm x 97 mm x 101 mm (width x height x depth)
Weight: ~420g
Housing entries: M20, max 3 pc
Varia can be connected to Seguro-Gas controller with remote monitoring capabilities. varia Intelligent Gas Detector - fig 2

GAS| Principle of detection| Measurement type| Default measurement range| Maximum measurement range| Typical sensor replacement interval (months)| Operating
temperature range| Operating humid range (no condensation)| Reponses time T90
---|---|---|---|---|---|---|---|---
Oxygen(O2)| Electrochemical| %vol| 25| 30| 18-24| -20°C‒+55°C| 5‒95% RH| <15s
Ammonia (NH3)| Electrochemical| ppm| 200| 1000| 24| -40°C‒+40°C| 15‒90% RH| <40s
Hydrogen fluoride (HF)| Electrochemical| ppm| 5| 10| 18| -40°C‒+40°C| 15‒90% RH| <90s
Carbon monoxide (CO)| Electrochemical| ppm| 300| 1000| 24| -30°C‒+50°C| 15‒90% RH| <30s
Chlorine (Cl2)| Electrochemical| ppm| 5| 20| 24| -20°C‒+50°C| 15‒90% RH| <60s
Chlorine dioxide (ClO2)| Electrochemical| ppm| 2| 2| 24| -20°C‒+40°C| 15‒90% RH| <60s
Ozone (O3)| Electrochemical| ppm| 1| 1| 24| -20°C‒+50°C| 15‒90% RH| <60s
Sulfur dioxide (SO2)| Electrochemical| ppm| 20| 100| 24| -30°C‒+50°C| 15‒90% RH| <30s
Hydrogen sulfide (H2S)| Electrochemical| ppm| 50| 100| 24| -30°C‒+50°C| 15‒90% RH| <40s
Hydrogen chloride (HCl)| Electrochemical| ppm| 20| 30| 24| -30°C‒+50°C| 15‒90% RH| <200s
Nitrogen dioxide (NO2)| Electrochemical| ppm| 10| 20| 24| -30°C‒+50°C| 15‒90% RH| <40s
Nitrogen oxide (NO)| Electrochemical| ppm| 50| 50| 12| -30°C‒+50°C| 15‒90% RH| <30s
Hydrogen (H2)| Electrochemical| ppm| 10 000| 20 000| 24| -20°C‒+50°C| 15‒90% RH| <110s
Ammonia (NH3)| Catalytic| %LEL| 100| 100| 60| -40°C‒+65°C| 0‒100% RH| <20s
Hydrocarbons and other flammable compounds| Catalytic| %LEL| 100| 100| 60| -40°C‒+60°C| 0‒100% RH| <20s
Hydrocarbons and other flammable compounds| NDIR| %LEL| 100| 100| 60| -40°C‒+60°C| 0‒95% RH| <30s
Refrigerants**| NDIR| ppm| 1000| 10 000| 60| -40°C‒+60°C| 0‒95% RH| <60s
Carbon dioxide (CO2)| NDIR| %vol| 3| 50 000| 60| -40°C‒+60°C| 0‒95% RH| <60s

*E.G. acetylene, gasoline, butane, diesel, ethanol, hexane, heptane, Isopropyl alcohol, xylene, methane, methanol, pentane, propane, toluene, hydrogen
**E.G. R32, R134a, R1234yf, R1234ze, R404a, R407c, R410a
For other target gases, measuring and operating temperature ranges, please ask Detector Ltd. www.detector.fi, tel. +358 20 7756 480