Honeywell 2106B1205 Sensepoint PPM Combustible Sensor Instruction Manual

Honeywell 2106B1205 Sensepoint PPM Combustible Sensor

Specifications

• Operating humidity range: 20% to 90% RH continuous. 10% to 99% RH intermittent – non condensing.
• Operating pressure range: 90 to 110 kPa.
• Warm-up time: 20 minutes.
• Voltage range: 2.9 V to 3.5 V bridge (at 200mA).
• Power consumption: 700mW.
• Signal output: mV bridge.
• Calibration flow rate: recommended between 1 and 1.5 l/min.
• Poisoning: the sensing elements may become inactive after extensive exposure to silicones, halogenated hydrocarbons, heavy metals, or sulfur compounds.
• Expected operating life: 5 years.
• IP rating: IP65 standard. IP67 with weather protection.

Product Usage Instructions

Installation

1. Locate a suitable mounting position for the sensor.
2. Ensure proper power supply within the specified voltage range.
3. Connect the sensor according to the provided wiring diagram.
4. Secure the sensor in place following the installation guidelines.

Calibration

1. Before use, calibrate the sensor using the recommended flow rate.
2. Follow the calibration instructions provided in the user manual.
3. Verify calibration accuracy periodically as per the maintenance schedule.

Maintenance

1. Regularly inspect the sensor for any signs of damage or contamination.
2. Clean the sensor as needed using a soft cloth or mild cleaning solution.
3. Replace any worn-out parts or components with genuine spare parts from the manufacturer.

FAQ

Q: What should I do if the sensor readings are unstable?

A: Check for any environmental factors that may affect sensor performance, recalibrate if necessary, and ensure proper maintenance of the sensor.

Q: How often should I replace the sensor?

A: The sensor has an expected operating life of 5 years, but it is recommended to follow the maintenance schedule and replace it if signs of deterioration are noticed before that time.

SAFETY

WARNINGS

• This apparatus is not suitable for use in oxygen-enriched atmospheres (>21%v/v). Oxygen-deficient atmospheres (<10%v/v) may suppress sensor output.
• Refer to local or national regulations relative to installation at the site.
• Operators should be fully aware of the action to be taken if the gas concentration exceeds an alarm level.
• Installation should consider not only the best place for gas leakage related to potential leak points, gas characteristics, and ventilation but also where the potential of mechanical damage is minimized or avoided.
• Electrostatic risk – Do not rub or clean with solvents. Clean with a damp cloth. High-velocity airflows and dusty environments can cause hazardous electrostatic charges.

CAUTIONS

• Atmospheres above 100% LEL may suppress the sensor reading.
• Do not modify or alter the sensor construction as essential safety requirements may be invalidated.
• Install using certified Ex e or Ex d junction boxes, connectors, and glanding.
• Dispose of under local disposal regulations. Materials used –Fortron ® (PPSPolyphenylene Sulphide)
• This equipment is designed and constructed as to prevent ignition sources from arising, even in the event of frequent disturbances or equipment operating faults.
• NOTE: The control card must have a suitably rated fuse.

INTRODUCTION

ATEX SPECIAL CONDITIONS FOR SAFE USE

• The detector must be protected from impact.
• The integral supply cables must be protected from impact and terminated in a suitable terminal facility.
• The detector is considered to present a potential electrostatic risk and must not be located in high air flows or rubbed.
• Sensepoint is a sealed disposable sensor for the detection of flammable gases and is designed for use with an approved junction box.
• It employs a catalytic pellistor sensor device which is used as part of a bridge measuring circuit.
• Sensepoint is certified for hazardous areas to EN60079 and is protected against water and dust ingress to IP67. The installation must be consistent with the certification approval.
• The sensor is available in M20 or 3/4 NPT thread versions.
• The sensors can be fitted with accessories such as Weather Protection, Flow Housings (for use when calibrating the sensor and in sampling systems), and a Collecting Cone for the detection of gases that are lighter than air.

ASSOCIATED DOCUMENTATION

2106M0502 Sensepoint Technical Handbook Refer to the relevant control system manual for connection information.

INSTALLATION

• Installation and service must be performed by a qualified installation engineer with the power to the sensor disconnected.
• The Sensepoint must be fitted into a suitably approved
• Exe or Ex d junction box fitted with a suitably approved cable gland. This should be correctly installed before use.
• The sensor should be installed in a location free from direct heat sources. For optimum protection against water ingress ensure that the sensor is installed facing downwards.
• See the Sensepoint Gas Sensors Technical Handbook for installation in a duct or in forced air conditions.
• Remove the sensor’s protective disc before use by unscrewing the filter housing, removing the filter, and then the disc. Discard the protective disc. Refit the filter into the filter housing and replace the filter housing on the sensor.
• The field connections should be three-core multi-strand cables with a maximum conductor size of 2.5mm2 (14AWG). A screened cable is necessary.
• The sensor should be fitted into a threaded hole within the junction box and locked in place with a lock nut. Ensure that the junction box thread is compatible with the sensor thread.
• Connect the field and Sensepoint wiring to the junction box connector block as shown in the following diagram. The unit requires a 200mA current with a nominal 3V supply.

Wiring connections are:-

Following installation the sensor must be calibrated.

SENSOR CALIBRATION

• Caution: Calibration procedures should only be carried out by qualified personnel.
• Note: Sensors should be calibrated at concentrations representative of those to be measured. It is always recommended that the Sensepoint sensor is calibrated with the target gas it is to detect. If this is not possible, cross-calibration should be performed.
• Since combustible sensors require oxygen for correct operation, a mixture of gas in the air should be used for calibration purposes.

CALIBRATION PROCEDURE

The calibration adjustments are carried out at the control card and gassing is performed at the sensor.

1. Apply power and allow the sensor to warm up for 20 minutes.
2. First, ensure there is no gas present on the sensor. If combustible gas is suspected to be in the vicinity of the Sensepoint sensor, fit a Flow Housing accessory and flow clean air over the sensor.
3. Set the zero reading on the control system.
4. Remove the filter housing or accessory and replace it with a Flow Housing accessory, if not already fitted.
5. Connect the Flow Housing input to a regulated cylinder, containing a known concentration of target gas at approximately the sensor alarm point (e.g. 50% FSD gas in the air), using nylon or PTFE tubing.
   • Caution: As some test gases may be hazardous, the Flow Housing outlet should exhaust to a safe area.
6. Pass the gas through the Flow Housing at a flow rate of approximately 1 to 1.5 liters per minute. Allow the sensor two to three minutes to stabilize.
7. Adjust the control card to indicate the concentration of the target gas being applied
   • Note: It is useful to record the mV output of the sensor, via the control card, throughout the life of the sensor to ensure that there are no poisoning effects that will reduce the sensor performance.
   • This would be indicated by a reduction in the mV output for the same gas concentration. It is recommended that the sensor be replaced when a 60% loss has occurred.
   • For calibration using the Weather Protection in high flow applications refer to the technical handbook.

CROSS CALIBRATION PROCEDURE

When the Sensepoint sensor is to be calibrated with a gas that is different from the gas/vapor to be detected, the following cross-calibration procedure should be followed.
Table 1 lists gases according to the reaction they produce. (These are not applicable at %LEL levels). Other calibration information may be obtained from Honeywell Analytics or the Technical Handbook.

Table 1: Cross Sensitivities (measured at 20°C STP)

Applied gas or vapor| Relative sensitivity| Applied gas or vapor| Relative sensitivity
---|---|---|---
Acetone| 120| Hydrogen| 113
Ammonia| 55| MILK| 181
Butane| 164| Octane| 197
Butanone (MEK)| 140| Propane| 153
Cyclohexane| 193| Tetrahydrofuran| 136
Diethyl ether| 140| Toluene| 181
Ethane| 133| Triethylamine| 142
Ethylene| 181| Xylene| 173
Heptane| 200| Methane| 100
Hexane| 193|  |

relative to Methane = 100

CROSS CALIBRATION Calibration formula:

• The PPM scale reading to be set is calculated using the formula.
• S = C x Y Z
• S = Scale reading to be set (ppm).
• C = Concentration of calibration gas (ppm).
• Y = Relative sensitivity to methane of calibration gas.
• Z = Relative sensitivity to methane of gas to be detected.

Cross Calibration example:

• The target gas to be detected is xylene in the range of 0-3000 ppm.
• The calibration gas available is ethane, concentration of 2000 ppm.
• Applying the calibration formula: S = 2000ppm x 133 = 266000 = 1538ppm 173 173
• The control card scale (meter) should be set to 1500 ppm to give an accurate reading for xylene using 2000 ppm ethane as a calibration gas.

IMPORTANT

• Where the user calibrates any sensor using a different gas, the responsibility for identifying and recording calibration rests with the user. Refer to local regulations where appropriate.

Table 2: Recommended full-scale deflection (fs)

FAULT FINDING

• Caution: There are no user-serviceable parts within the Sensepoint and attempted changes may invalidate the certification requirements.
• The sensor reads non-zero all the time:
  • gas could be present, ensuring that there is no combustible gas in the atmosphere.
• The sensor reads non-zero when no gas is present:
  • adjust the zero of the control system.
• The sensor reads low when gas is applied:
  • adjust the span of the control system.
• The sensor reads high when gas is applied:
  • adjust the span of the control system.
• A sensor reads zero when gas is applied:
  • check the wiring.
  • check that the dust protection cap has been removed.
  • check that the sinter is not obstructed.
  • replace the sensor if poisoning is suspected.

MAINTENANCE

CHANGING FILTERS

• Remove the black plastic retainer or accessory.
• Remove the old filter and replace it with a fresh filter.
• Replace the black plastic retainer or accessory

APPENDIX A – SPECIFICATIONS

• Operating temperature range:
  • 30°C to +65°C standard.
• Operating humidity range:
  • 20% to 90% RH continuous.
  • 10% to 99% RH intermittent – non condensing.
• Operating pressure range:
  • 90 to 110 k Pa.
• Warm-up time:
  • 20 minutes.
• Voltage range:
  • 2.9 V to 3.5 V bridge (at 200mA).
• Power consumption:
  • 700mW.
• Signal output:
  • mV bridge.
• Calibration flow rate:
  • recommended between 1 and 1.5 l/min.
• Poisoning:
  • the sensing elements may become inactive after extensive exposure to silicones, halogenated hydrocarbons, heavy metals, or sulfur compounds.
• Expected operating life:
  • 5 years.
• IP rating:
  • IP65 standard.
  • IP67 with weather protection.

MAIN FEATURES

SPARE PARTS

• Sensor…………………………………………………..2106B1205 (M20)
• Sensor……………………………………………..2106B1209 (3/4 NPT)
• Weather protection………………………………………..02000-A-1640
• Sensor filter………………………………………………….00780-F-0018
• Flow housing………………………………………………..02000-A-1645
• Collecting cone…………………………………………….02000-A-1642
• Junction box (std)………………………………………….00780-A-0100
• To reorder a completely new sensor, see the label on the product leads, or contact Honeywell Analytics Ltd.

CERTIFICATION LABEL

Find out more

• www.sps.honeywell.com

Contact Honeywell Analytics:

• Europe, the Middle East, and Africa
• Life Safety Distribution GmbH
• Tel: 00800 333 222 44 (Freephone no.)
• Tel: +41 (0)44 943 4380 (Alternative no.)
• Middle East Tel: +971 4 450 5800 (Fixed Gas Detection)
• Middle East Tel: +971 4 450 5852 (Portable Gas Detection)
• gasdetection@honeywell.com

Americas

• Honeywell Analytics Inc.
• Tel: +1 847 955 8200
• Toll-free: +1 800 538 0363
• detectgas@honeywell.com
• Asia Pacific
• Honeywell Co., Ltd.
• Tel: +82 (0) 2 6909 0300
• India Tel: +91 124 4752700
• China Tel: +86 10 5885 8788-3000
• analytics.ap@honeywell.com

Technical Services

• EMEA:HAexpert@honeywell.com
• US:ha.us.service@honeywell.com
• AP:ha.ap.service@honeywell.com
• www.sps.honeywell.com
• Please Note: While every effort has been made to ensure accuracy in this publication, no responsibility can be accepted for errors or omissions.
• Data may change, as well as legislation, and you are strongly advised to obtain copies of the most recently issued regulations, standards, and guidelines. This publication is not intended to form the basis of a contract.
• Issue 11 10/2023
• 2106M0513 ECN-00045549
• © 2023 Honeywell Analytics

References

• Industrial Automation | Honeywell

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