Measuring heads
| Measuring head | gas | Measuring range |
| Pellistor sensors (heat exchanger) | ||
| Explosive + flammable gases | 0 – 100% LEL | |
ExDetector HC 200
The ExDetector HC 200 sensor is used to measure the current concentration of explosive gases and vapors. Combustible gases and vapors can be detected in the measuring range from 0 to 100 % LEL. The measuring principle is based on catalytic combustion (heat tinting).
The ExDetector HC 200 is stand-alone capable, i.e. it can independently initiate protective measures without the additional use of an evaluation unit. It can also be conventionally connected to an evaluation unit.
The ExDetector HC 200 can be used in Ex zone 2.
Special features:
- Ex zone 2
- Flammable gases and vapors
- Measuring range from 0 to 100 % LEL
- Stand alone mode possible
- One-person calibration
Our quality standards:
- Solid design in a robust housing
- Durable with low maintenance costs
- Developed and manufactured in Germany
- Conformity is confirmed by certifications from notified bodies
Measurable gases
These gases have already been successfully detected with the sensor.
The following gases can be monitored with the ExDetector HC 200. Other gases on request.
- C₆H₁₂O₂ – 1-butyl acetate (butyl acetate) – BAc
- C₅H₁₂O₂ – 1-ethoxypropan-2-ol – EEP
- C₄H₁₀ O₂ – 1-methoxypropan-2-ol – PM
- C₃H₇OH – 1-propanol (n-propanol) 1- PrOH
- C₅H₁₀O₂ – 1-propyl acetate (propyl acetate)
- C₂H₄O – acetaldehyde
- C₃H₆O – Acetone
- CH₃CN – Acetonitrile – MeCN
- CH₂O₂ – Formic acid
- NH₃ – Ammonia
- C₆H₅NH₂ – Aniline
- Gasoline
- C₆H₆ – Benzene
- C₄H₁₀ – Butane
- C₄H₁₀O – Butanol
- C₆H₁₂ – Cyclohexane – CHX
- CH₂Cl₂ – Dichloromethane
- Diesel (Diesel fuel CAS 68334-30-5)
- C₄H₁₀O – diethyl ether
- C₂H₄O₂ – Acetic acid
- C₂H₆ – Ethan
- C₂H₅OH – ethanol
- C₂H₅OH – ethanol
- C₂H₄ – ethene
- C₄H₈O₂ – ethyl acetate
- C₂H₂ – Ethine (acetylene)
- CH₂O – Formaldehyde
- C₃H₇OH – isopropanol (I-propanol, IPA)
- Denatured alcohol – IMS (Industrial Methylated Spirit)
- Kerosene (CAS 8008-20-6)
- CO – Carbon monoxide
- CH₄ – Methane
- CH₃OH – methanol
- C₅H₁₀O – 2-pentanone (methyl-1-propyl ketone, MPK, CAS 107-87-9)
- C₄H₈O – Butanone (methyl ethyl ketone, MEK)
- C₅H₁₂O – Methyl tert-butyl ether (MTBE)
- CH₅N – Methylamine
- C₂H₄O₂ – Methyl formate
- C₆H₁₂O – methyl isobutyl ketone (MIBK, hexone, isopropyl acetone, CAS 108-10-1)
- C₇H₁₆ – n-heptane
- C₆H₁₄ – n-hexane
- C₉H₂₀ – n-Nonan
- C₈H₁₈ – n-octane
- C₅H₁₂ – n-pentane
- Naphtha (light petrol, CAS 8030-30-6)
- Nitro thinner (Nitro)
- C₃H₈ – Propane
- C₃H₆ – Propene
- C₈H₈ – styrene (vinylbenzene)
- C₄H₈O – tetrahydrofuran (THF)
- C₇H₈ – Toluene
- C₂HCl₃ – Trichloroethylene
- H₂ – Hydrogen
- C₈H₁₀ – Xylene
Description
The ExDetector HC 200 can be used to detect flammable gases and vapors in the measuring range from 0 to 100 % LEL. The measuring principle is based on catalytic combustion (heat tinting).
The ExDetector HC 200 gas sensor has the following functions: Measurement of the current gas concentration. Monitoring or warning of this gas. Triggering of protective measures:
– Technical: The increase in concentration is counteracted (fan; shutdowns….).
– Organizational: Visual and acoustic messages.
The ExDetector HC200 sensor can be programmed in two operating modes:
● Standalone mode
The integrated alarm evaluation is switched on. Two alarm levels with switch-off hysteresis can be stored in the programming. Alarm level 1 is designed as a pre-alarm and is a non-memory NC contact. Alarm level 2 (main alarm) switches a latching NC contact. After falling below this alarm threshold, the alarm is maintained and must be acknowledged via the reset input. A fault signaling contact signals malfunction and overrange. In addition, the measured value is output as a 4 … 20 mA signal for further processing.
● Transmitter CL
If the alarm evaluation functionality is not required, the sensor can be operated with the integrated CL option. In this case, the sensor supplies the measured gas concentration in the form of a 4 … 20 mA signal for further processing in an alarm center; the alarm switching contacts are not activated
.
Operating parameters are programmed and the measuring element adjusted via the optionally available, also explosion-proof, control unit. This makes operation and maintenance possible even in hazardous areas.
Features of the ExDetector HC 200:
- Detection of flammable and explosive gases and vapors
- Measuring range 0 – 100 % LEL (lower explosion limit)
- Measuring principle catalytic combustion (heat tinting)
- Linear measuring signal 4 – 20 mA
- Integrated switching outputs for:
– Alarm 1 (pre-alarm)
– Alarm 2 (main alarm)
– Sensor fault - One-person calibration – direct adjustment at the sensor (optional control unit)
- Use in Zone 2 hazardous areas
- Integrated low-voltage switching outputs for pre-alarm and main alarm
- 3-wire technology
Accessories for the ExDetector HC 200:
- Test gas set
- Calibration gases
- Control unit type Calibrationbox-i
- Evaluation devices
- Mounting bracket
- Remote gassing adapter FBA2018
Technical Data
| Sensor type | Heat tinting (catalytic combustion) |
|---|---|
| Approvals | Ex zone 2 |
| Prototype | Electrical safety of the equipment: |
| Measuring signal | linear 4 -20 mA |
| One-man calibration | with Calibrationbox-i |
| Further information | See data sheet |
