పరిచయం
The Dwyer Magnehelic Series 605 Indicating Transmitter is designed for both visual monitoring and electronic control of very low differential pressure. This device is suitable for control applications in building HVAC systems, providing local indication for routine maintenance and system troubleshooting. It combines the reliable Dwyer Magnehelic gauge mechanical design with Series 600 transmitter technology, offering a two-wire, 4-20 mA control signal. The terminal strip on the rear simplifies connection to any 4-20 mA control loop powered by a 10-35 VDC supply.
మూర్తి 1: ముందు view of a Dwyer Magnehelic Indicating Transmitter. The dial displays pressure in inches of water, with a visible range from 0 to 1.0. The face includes the "Magnehelic" brand, "Indicating Transmitter" label, maximum pressure rating (25 PSIG), and patent information. Adjustment screws for "SPAN" and "ZERO" are visible at the bottom, along with the Dwyer logo. Note that the specific model 605-3 covered in this manual has a 0-3.0"WC range.
భద్రతా సమాచారం
Read this manual thoroughly before installing, operating, or servicing this device. Failure to follow these instructions may result in product damage, property damage, or serious injury. Keep this manual for future reference.
- అన్ని విద్యుత్ కనెక్షన్లు స్థానిక మరియు జాతీయ విద్యుత్ కోడ్లకు అనుగుణంగా ఉన్నాయని నిర్ధారించుకోండి.
- Disconnect power before making any wiring connections to prevent electrical shock.
- Do not exceed the maximum pressure rating of 25 PSIG.
- ఇన్స్టాలేషన్ మరియు సర్వీస్ను అర్హత కలిగిన సిబ్బంది మాత్రమే నిర్వహించాలి.
స్పెసిఫికేషన్లు
| పరామితి | విలువ |
|---|---|
| మోడల్ సంఖ్య | 605-3 |
| ఒత్తిడి పరిధి | 0-3.0"WC (Inches of Water Column) |
| అవుట్పుట్ సిగ్నల్ | 4-20 mA, 2-wire |
| విద్యుత్ సరఫరా | 10-35 VDC |
| గరిష్ట ఒత్తిడి | 25 PSIG |
| ఉత్పత్తి కొలతలు | 7.6 x 6.8 x 3.7 అంగుళాలు |
| బరువు | 2.35 పౌండ్లు |
| తయారీదారు | డ్వైయర్ ఇన్స్ట్రుమెంట్స్ |
సెటప్ మరియు ఇన్స్టాలేషన్
మౌంటు
The Series 605 can be flush mounted or surface mounted. Ensure the mounting location is free from excessive vibration and within the specified operating temperature range. The device should be mounted vertically for accurate readings.
- మౌంటు కోసం తగిన స్థలాన్ని ఎంచుకోండి.
- Secure the transmitter using appropriate hardware (not included).
- Ensure the pressure ports are accessible for tubing connections.
ఒత్తిడి కనెక్షన్లు
Connect the pressure tubing to the high and low pressure ports located on the back of the unit. Use appropriate tubing and fittings for the application. The high pressure port is typically marked "HIGH" or "+", and the low pressure port "LOW" or "-".
- Connect the higher pressure source to the "HIGH" port.
- Connect the lower pressure source to the "LOW" port.
- Ensure all connections are leak-free.
ఎలక్ట్రికల్ వైరింగ్
The Series 605 utilizes a two-wire, 4-20 mA output. Connect the transmitter to a 10-35 VDC power supply and the control system as follows:
- Connect the positive (+) terminal of the power supply to the positive (+) terminal of the transmitter.
- Connect the negative (-) terminal of the transmitter to the input of the control system (e.g., PLC, DCS).
- Complete the loop by connecting the return of the control system to the negative (-) terminal of the power supply.
- Ensure proper polarity to avoid damage.
ఆపరేషన్
పవర్ ఆన్
Once all connections are secure, apply power to the unit. The analog output will begin to transmit a 4-20 mA signal corresponding to the measured differential pressure.
డిస్ప్లే చదవడం
The Magnehelic gauge provides a local visual indication of the differential pressure. The red pointer on the dial indicates the current pressure in inches of water column ("WC").
జీరో మరియు స్పాన్ సర్దుబాటు
The Series 605 features external zero and span adjustments. These adjustments affect both the visual indication and the 4-20 mA output.
- సున్నా సర్దుబాటు: With no pressure applied (both ports open to atmosphere or connected to the same pressure), adjust the "ZERO" screw (typically located at the bottom right of the dial) until the pointer reads 0"WC. This also calibrates the 4 mA output.
- స్పాన్ సర్దుబాటు: Apply a known full-scale pressure (e.g., 3.0"WC for a 0-3.0"WC range). Adjust the "SPAN" screw (typically located at the bottom left of the dial) until the pointer reads the full-scale value. This calibrates the 20 mA output. Repeat zero and span adjustments as necessary for optimal accuracy.
నిర్వహణ
The Dwyer Magnehelic Series 605 is designed for minimal maintenance. Regular checks ensure continued accuracy and reliable operation.
- ఆవర్తన క్రమాంకనం: It is recommended to periodically verify the zero and span calibration, especially if accuracy is critical or after significant environmental changes.
- శుభ్రపరచడం: Keep the exterior of the unit clean. Use a soft, damp గుడ్డ. రాపిడి క్లీనర్లు లేదా ద్రావకాలు ఉపయోగించవద్దు.
- Pressure Port Inspection: Periodically inspect pressure tubing and connections for leaks or blockages.
- పర్యావరణ పరిస్థితులు: ఆపరేటింగ్ వాతావరణం పేర్కొన్న ఉష్ణోగ్రత మరియు తేమ పరిధిలో ఉండేలా చూసుకోండి.
ట్రబుల్షూటింగ్
| సమస్య | సాధ్యమైన కారణం | పరిష్కారం |
|---|---|---|
| No Indication / No Output | No power; Incorrect wiring; Blocked pressure ports; Damaged unit. | Check power supply (10-35 VDC); Verify wiring connections and polarity; Inspect pressure ports and tubing for obstructions; Contact technical support if unit is damaged. |
| సరికాని రీడింగ్లు | Out of calibration; Leaks in pressure lines; Incorrect mounting position; Environmental factors. | Perform zero and span calibration; Check all pressure connections for leaks; Ensure unit is mounted vertically; Verify operating environment. |
| Output Signal Stuck at 4 mA or 20 mA | Sensor fault; Wiring issue; Over-range/Under-range pressure. | Check pressure applied is within range; Verify wiring integrity; Contact technical support. |
వారంటీ మరియు మద్దతు
Dwyer Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of one year from the date of shipment. For full warranty details, technical support, or service, please contact Dwyer Instruments directly. Contact information can be found on the official Dwyer webసైట్.
డ్వైర్ ఇన్స్ట్రుమెంట్స్, ఇంక్.
Michigan City, IN 46360 U.S.A.
www.dwyer-inst.com
