KYOWA PGM-D Series - User Manual

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IM-T-131J 2021.9

ＰＧＭ－

Ｄ型圧力変換器－取扱説明書

このたびは本製品をお買い上げいただきまして，ありがとうご

ざいます。ご使用の前には，本書を必ずお読みください。

また，お読みになったあとはいつでも見られるところに必ず保

管してください。

本書に記載の仕様・外観は予告なく変更させていただく場合が

あります。最新情報は弊社ホームページをご確認ください。

取扱説明書中のマークについて

ご使用になる方の安全確保に関する重要な事項や機能確保に

関する事項にはマークをつけて記載していますので，必ずお読

みください。

警告

取扱を誤った場合，人体に重大な悪影響を及ぼ

す恐れがあります。

注意

取扱を誤った場合，人体に悪影響を及ぼす恐れ

があります。

注意

故障しないようにするための注意や正しく動

作させるための注意を記載しています。

ご使用に際しての重要な注意

本製品は，水素環境下ではご使用できません。

安全上のご注意

警告

許容過負荷を超える圧力をかけないでください。

破裂する恐れがあります。

受感部に突起物をあてないでください。

傷がつき破裂する恐れがあります。

指定された締め付けトルクで使用してください。

締め付けトルクが適正でないと破裂する恐れがあります。

予測できない過大圧力が負荷される恐れがある場合は，周

囲に保護ケースを設置し，安全を確保してください。

取付けねじ穴部の材質には十分な強度のあるものを選定

してください。

注意

取外しは圧力が完全に解放されていることを確認してか

ら行ってください。

接液部の材質は SUS630（JIS G4303）を使用しています。

本材質が腐食する恐れのある液体，気体には使用しないで

ください。

使用上のご注意

注意

変換器を分解しないでください。

受圧面，ねじ部等に傷を付けないでください。

保護等級は IP52 です。水没させての使用は出来ません。

変換器を結露させないでください。結露した場合は速やか

に乾燥させてください。

ケーブルを引き出し口付近で強引に曲げないでください。

ケーブル曲げ半径は，ケーブル直径の６倍以上としてくだ

さい。

振動環境下で圧力変換器を使用する場合は，圧力変換器の

ケーブル引き出し口付近でケーブルを固定し，振動止めを

施してください。

動的現象での立ち上がり時間が短い場合は，変換器と測定

器を含めた応答性が問題になります。各々の応答性を確認

の上ご使用ください。

取付け

5.1

付属のガスケットを使用し，本体のスパナ掛け部を利用し

て取付けます。他の部分にスパナを掛けると変換器を破損

させる恐れがあります。

ケーブルがねじれて断線しないよう，ケーブルも一緒に回

してください。

推奨締め付けトルク

型式名締め付けトルク

PGM-10KD M156 10～20 N･m

PGM-20KD M156 10～30 N･m

PGM-50KD 10～30 N･m

PGM-100KD 10～30 N･m

PGM-200KD 20～30 N･m

PGM-500KD 30～40 N･m

最大締め付けトルクは 40 N･m です。

5.2

ガスケットは新しいものを使用してください。

5.3

できるだけ圧力源に近い場所に変換器を取付けてくださ

い。

5.4

導管がある場合は，導管との接続部にコックかバルブを設

けて取り外しが簡単に出来るようにすると便利です。

Need help?

Do you have a question about the KYOWA PGM-D Series and is the answer not in the manual?

The KYOWA PGM-D Pressure Transducer is a high-precision instrument designed for measuring pressure, converting it into an electrical signal, and transmitting it to a recording device. This manual provides comprehensive instructions for its safe and effective use, maintenance, and technical specifications.

Function Description

The PGM-D series transducers operate on the principle of strain gauge measurement. When pressure is applied to the transducer, a diaphragm deforms, causing strain gauges bonded to it to change their electrical resistance. This change in resistance is converted into an electrical signal, typically a voltage, which is proportional to the applied pressure. The transducer is designed to provide stable and accurate measurements over its specified pressure range.

Important Technical Specifications

The PGM-D series offers various models, each with specific rated capacities and output characteristics.

Models and Rated Capacities:
- PGM-10KD: 10 kPa (1.00 kgf/cm²)
- PGM-20KD: 20 kPa (2.00 kgf/cm²)
- PGM-50KD: 50 kPa (5.00 kgf/cm²)
- PGM-100KD: 100 kPa (10.0 kgf/cm²)
- PGM-200KD: 200 kPa (20.0 kgf/cm²)
- PGM-500KD: 500 kPa (50.0 kgf/cm²)
Rated Output:
- PGM-10KD, PGM-20KD, PGM-50KD, PGM-100KD, PGM-200KD, PGM-500KD: 1.5 mV/V ±20% (for models with rated capacity up to 500 kPa).
- For PGM-10KD and PGM-20KD, the rated output is 0.75 mV/V and 1.1 mV/V respectively.
Natural Frequencies (Approx.):
- PGM-10KD: 50 Hz
- PGM-20KD: 65 Hz
- PGM-50KD: 83 Hz
- PGM-100KD: 115 Hz
- PGM-200KD: 190 Hz
- PGM-500KD: 250 Hz
Performance:
- Rated Capacity: See table above.
- Nonlinearity: Within ±0.5% RO (Rated Output).
- Hysteresis: Within ±0.5% RO.
- Repeatability: 0.5% RO or less.
- Rated Output: See table above.
Environmental Characteristics:
- Safe Temperature Range: -10 to 60°C.
- Compensated Temperature Range: 0 to 50°C.
- Temperature Effect on Zero: Within ±0.1% RO/°C (0 to 200KDM156), Within ±0.15% RO/°C (PGM-10KD, PGM-20KD, PGM-50KD, PGM-100KD, PGM-200KD, PGM-500KD).
- Temperature Effect on Output: Within ±0.1% /°C.
Electrical Characteristics:
- Safe Excitation Voltage: 3 V AC or DC.
- Recommended Excitation Voltage: 1 to 2 V AC or DC.
- Input Resistance: 120 Ω ±2%.
- Output Resistance: 120 Ω ±2%.
- Cable: Conductive (0.08mm²) chloroprene shielded cable, 4mm diameter by 3m long, terminated with connector plug. (JIS C 3406, PGM-10KD, PGM-20KD, PGM-50KD, PGM-100KD, PGM-200KD, PGM-500KD).
- The cable for PGM-10KD to PGM-500KD is a 4-conductor shielded cable, 4mm in diameter and 3m long, with a connector plug.
Mechanical Properties:
- Safe Overloads: 150%.
- Natural Frequencies: See table above.
- Material: Case: Stainless steel. Liquid-contacting part: SUS630. Cable: 3m (excluding cable).
- Degree of Protection: IP52 (IEC 60529).
- Mounting Screw: G1/8, M10.
- Compliance: Directive 2011/65/EU (EU), 2015/863 (10 restricted substances) (RoHS).
Accessories:
- Gasket (Mild copper): 3
- Protecting Cap: 1 (Note: It is attached to the product at delivery.)
- Test Data Sheet: 1
- Instruction Manual: 1 (This book)

Usage Features

Installation:
- Mounting: The transducer should be mounted securely to the measurement object using the specified tightening torque. For models PGM-10KD to PGM-500KD, the tightening torque ranges from 10 to 40 N·m depending on the model. Maximum tightening torque is 40 N·m.
- Gasket: Always use a new gasket to ensure a proper seal and prevent leaks.
- Wrench: Use a wrench on the flat-to-flat part of the transducer body (14mm for PGM-10KD to PGM-500KD) to tighten it. Do not apply the wrench to the cable side.
- Cable Connection: Connect the transducer's cable to a measuring instrument (e.g., a strain amplifier or data logger). Ensure proper wiring according to the provided diagram (Wheatstone bridge configuration).
- Cable Routing: Secure the cable to prevent damage from twisting or excessive bending. The bending radius of the cable should be at least 6 times its diameter.
Operation:
- Excitation Voltage: Apply the recommended excitation voltage (1 to 2 V AC or DC) from the measuring instrument.
- Calibration: For accurate measurements, it is crucial to calibrate the transducer and the measuring instrument. This typically involves applying known pressures and recording the corresponding output signals to establish a pressure-to-output relationship.
- Zero Adjustment: Before starting measurements, perform a zero adjustment to compensate for any offset.
- Temperature Compensation: The transducer is designed with temperature compensation, but for highly precise measurements, it is advisable to operate within the specified compensated temperature range (0 to 50°C).
Safety Precautions:
- Liquid Contact: Do not immerse the transducer in liquid unless specifically designed for it. Avoid contact with water or other liquids to prevent damage.
- Overload: Do not exceed the safe overload rating (150% of rated capacity) to prevent damage to the sensing element.
- Condensation: Prevent condensation, especially in environments with rapid temperature changes.
- Impact: Avoid dropping or subjecting the transducer to strong impacts.
- Flammable/Explosive Environments: Do not use the transducer in flammable or explosive gas environments unless it is specifically certified for such use.
- Disassembly: Do not attempt to disassemble or modify the transducer, as this will void the warranty and may damage the instrument.
- Corrosive Liquids/Gases: Avoid contact with corrosive liquids or gases, as they can damage the stainless steel parts.

Maintenance Features

Cleaning:
- Regularly clean the exterior of the transducer and the connector to prevent dust and dirt accumulation. Use a soft, dry cloth.
- For the pressure port, carefully clean any residue that might affect measurement accuracy.
Inspection:
- Annual Inspection: It is recommended to inspect the transducer at least once a year. This includes checking the input resistance, output resistance, and insulation resistance. If any abnormalities are found (e.g., input/output resistance below 100Ω), the transducer may be faulty and should be sent for repair or replacement.
- Cable Inspection: Regularly check the cable for any signs of damage, cuts, or excessive bending. Replace the cable if damaged.
- Gasket Replacement: Always use a new gasket when re-installing the transducer to ensure a proper seal.
Storage:
- When not in use, store the transducer in a clean, dry place, away from direct sunlight, high temperatures, and humidity.
- Use the provided protective cap to cover the pressure port to prevent dust and damage.
Troubleshooting:
- If the transducer does not operate correctly, first check the connections, excitation voltage, and calibration.
- If the issue persists, refer to the troubleshooting section of the manual or contact KYOWA for support. Do not attempt unauthorized repairs.

The KYOWA PGM-D Pressure Transducer series is a reliable and accurate solution for various pressure measurement applications, provided it is used and maintained according to the guidelines outlined in this manual. Adhering to these instructions will ensure optimal performance, longevity, and safety of the instrument.

KYOWA PGM-D Series Specifications

General

Brand	KYOWA
Model	PGM-D Series
Category	Transducer
Language	English