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Related Manuals for Prosense PC3 Series
Summary of Contents for Prosense PC3 Series
- Page 1 PROSENSE PC3 Series Gas Detectors Installation and User Manual Prosense Teknoloji San. Ltd. Şti. Cumhuriyet Mah. Mermer Sok. No:16 Kartal/İstanbul TÜRKİYE Tel: +(90) 216 306 77 88 Faks: +(90)216 473 81 29 www.prosense.com.tr PRS-UM-PC3-EN-Rev.04-06.2020...
- Page 2 Otherwise, it could fail to perform as designed and persons who rely on this product for their safety could suffer severe personal injury or death. The warranties made by Prosense with respect to this product are voided if the product is not installed, used and serviced in accordance with the instructions in this user guide.
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Page 3: Table Of Contents
Contents For Your Safety ............................4 Strictly Follow the Instructions for Use ....................4 Maintenance ............................4 Use in Areas Subject To Explosion Hazards ..................4 Liability for Proper Function or Damage .................... 4 Intended Use ............................4 Introduction ..............................6 Detector Body............................. -
Page 4: For Your Safety
Prosense or if the sensing head is used in a manner not conforming to its intended use. Prosense cannot be held responsible for damage caused by non-compliance with the recommendations given above. - Page 5 3. Long-term Gassing With Methane at Very Low Temperatures If the Prosense PC3 series flammable gas detectors are operated applying with methane at very low temperatures, the measuring signal at long-term exposition may decrease after alarm activation and may lead to misinterpretation.
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Page 6: Introduction
Zone2 or other areas not classified as hazardous. Prosense detectors can be configured with a wide range of different sensors may be used to detect a broader range of target gases. The detector can be configured with optional relay board features three programmable relays for controlling external equipment e.g. -
Page 7: Detector Body
Diagram 2. Sensor Head: Diagram 2: Detector body dimensions The Prosense sensor head designed to detect flammable, toxic and oxygen gases. Sensor head may include electro catalytic or electrochemical sensors. PC3 Series uses SH20 sensor head Installation: and components are given in Diagram 1. -
Page 8: Mounting The Detector
Prosense may provide cable gland together with detector in regards to customer requests. The cable gland provided by Prosense has ATEX certification and provides at least IP65 level protection. The cable glands are only suitable for fixed installations. Cables shall be effectively clamped to prevent pulling or twisting. -
Page 9: Electrical Connections
The Prosense PC3 detector has three mounting screw locations on body as given in Diagram 3. Body mounting screw location Body mounting screw location Body mounting screw location Electrical Connections Diagram 3: PC3 detector mounting screw locations Caution: All electrical connections should be made in accordance with any relevant local or national legislation, standards or codes of practice. - Page 10 The maximum loop resistance in the field cable is calculated as follows: R loop = (V controller – V detector min) / I detector Example; Diagram 4: Field cabling The controller or power supply is supplying a nominal 24VDC (V controller), the detector minimum allowable voltage is 12VDC (V detector min), therefore the maximum allowable voltage drop between the controller and detector is 12VDC;...
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Page 11: Cabling
Cabling The use of industrial grade, suitably shielded field cable is recommended. The best practices shown that, screened 3 cores (plus screen 90% coverage), suitably mechanically protected copper cable with a suitable explosion-proof gland, or ¾” NPT steel conduit, depending on the distance between signal received or control panel and detector 0.5 to 2.5 mm2 (20 to 13 AWG) conductors can give better results. -
Page 12: Detector Grounding
Detector Grounding Internal Ground connection: Each detector has grounding screw which utilizes grounding for detector main PCB to detector body. The screw should be located correctly and fixed for all times. In case of any maintenance activity this screw should be checked and fixed to make sure for proper grounding. -
Page 13: Default Configuration
Default Configuration Prosense detectors preconfigured to provide signal from analogue output depending on the detector and gas type. The output signal levels are given in below: Function Value/Setting Meaning 2.0 mA Fault 2.0 mA to 2.5 mA Warm-up Signal output 4.0 mA to 20.0 mA... -
Page 14: 4-20 Ma Output
4-20 mA Output: even 4-20mA analogue output is not used The default configuration provides single 4-20mA signal output. Prosense detectors can be connected to control panels on the market having 4-20mA input signal. Signal wiring from detector and the control panel should be carried out by shielded cables. Wires cross section depends on the distance between the control panel and the detector. - Page 15 Diagram 8: RS485 Modbus serial communication address and switch position The last detector in the chain should have 120 Ohm RS485 termination resistor. The resistor is already implemented on the board by default but not activated. User should activate the termination resistor via using the termination pin once the installation completed.
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Page 16: Detector Relay Module
Table 7 : Relay module output ports and their usage All output pins located on Prosense IR detector can be used simultaneously. That means user can use all relay outputs, analogue (4-20mA) output and RS485 digital output at same time if implementation equipment allows their usage. -
Page 17: System Status
Table 11: Alarm level (% Vol) pin positions for Oxygen detectors The Prosense PC3 detector has two LEDs on main board. Red LED shows system power status and yellow LED shows fault status. Both LEDs will be illuminated right after applying power. -
Page 18: First Time Switch On (Commissioning)
To calibrate the detector, use an appropriate span gas cylinder, constant flow regulator and Prosense Gas Cap. The calibration gas flow rate should be 0.5 L/min. It is recommended to use a compressed air cylinder (20.9%Vol oxygen) to perform the zero calibration if the area where the detector is located contains any residual amount of the target gas. -
Page 19: Zero Calibration
Zero Calibration button Span Calibration button Zero Calibration Diagram 10: Calibration buttons The detector signal output should be 4 mA when there is no target gas exist on the area or a clean compressed air applied to detector. Use a multimeter to check signal output. If the signal output is different than 4 mA, enable the zero calibration via pressing to the zero calibration button for 10 seconds. -
Page 20: Maintenance
Maintenance Important: Do not press both buttons. Important: All replacement actions (sensor, sinter, and sensor head) shall be done by Prosense service personnel as it needs some special steps that should be performed in Proactive Maintenance: laboratory environment. All gas detectors including both for flammable and toxic gases should have to pass a functional test and calibration periodically according to industrial standards. -
Page 21: Sensor Replacement
Sensor Head Replacement: 5- Fix the Locking grub screw Prosense sensor head is a separate part that can be replaced in the field. The sensor head includes integrated sensor, electronic device and sinter in it. To replace sensor head: 1- Power-Off the Prosense detector... -
Page 22: General Specification
General Specification Use: Gas detector with default 3-wire, 4-20mA output for the protection of personnel and plant from flammable and toxic gas hazards. Electrical Specifications: Input Voltage Range 12 to 24VDC (24VDC nominal) Max Power Consumption Max 5 Watts. at 24VDC Current output 4-20mA 2.0 mA... -
Page 23: Certification
Certification PRS-UM-PC3-EN-Rev.04-06.2020... -
Page 24: Warranty Statement
Prosense Technology's liability for any claims arising out of or related to this product will in no case exceed the order value. To the extent permitted by applicable law, these limitations and exclusions will apply regardless of whether liability arises from breach of contract, warranty, tort (including but not limited to negligence), by operation of law, or otherwise.