1. はじめに
This manual provides comprehensive instructions for the safe and effective use of the Fluke 725 Multifunction Process Calibrator. The Fluke 725 is a robust and user-friendly field calibrator designed for testing and calibrating a wide range of process parameters. It combines measurement and source functions to facilitate accurate calibration of transmitters and other industrial equipment.
Key capabilities include sourcing and simulating volts, mA, thermocouples, RTDs, frequency, ohms, and pressure. It also supports flow meter testing with frequency and CPM functions, offers fast linearity tests with auto-step and auto-ramp features, and can power transmitters using its loop supply while simultaneously measuring mA. The device is designed for durability and ease of use in various industrial environments.
2. セットアップ
2.1 開梱と検査
Upon receiving your Fluke 725, carefully unpack the contents. The package should include the Multifunction Process Calibrator unit. Inspect the calibrator for any signs of damage that may have occurred during shipping. If any damage is observed, contact your supplier immediately.
2.2 バッテリーの取り付け
The Fluke 725 operates on four AA alkaline batteries, which are included. The battery compartment is located on the rear of the unit and features an easy-access door for convenient changes.
- Locate the battery compartment door on the back of the calibrator.
- Open the door by sliding or unlatching it according to the markings.
- Insert four AA alkaline batteries, ensuring correct polarity as indicated inside the compartment.
- 電池ケースのドアをしっかり閉めてください。
2.3初期電源オン
Press the power button (typically marked with a circle and a vertical line) to turn on the calibrator. The display should illuminate, indicating the device is ready for operation.
図1: 前面 view of the Fluke 725 Multifunction Process Calibrator, showing the display and control buttons.
3. 操作手順
The Fluke 725 allows simultaneous viewing of input and output on its easy-to-read measure/source screen.
3.1 基本的な測定と調達
The calibrator features dedicated buttons for various measurement and source functions. Use the 'MEAS' button to select measurement mode and the 'SOURCE' button to select source mode. Specific parameters can be selected using the corresponding function buttons (e.g., V mA, TC, RTD, Hz, Ohms).
3.2 Parameter Specific Operations
- 巻tage（V）: Measure 0 to 30V, Source 0 to 10V. Resolution up to 0.01V.
- 電流 (mA): Measure and Source 0 to 24 mA. Resolution 0.001 mA. Max load for source is 1000 ohm.
- Thermocouples (TC): Measure and Source mV (TC terminals) from -10.00 mV to 75.00 mV.
- RTD: Measure and Source Resistance from 15 to 3200 ohm.
- 周波数 (Hz): Measure and Source 2.0 to 1000.0 CPM, 1 to 1000 Hz, 1.0 to 10.0 kHz. For frequency source, the waveform is a 5V p-p squarewave with a -0.1V offset.
- Ohms (Ω): Measure and Source resistance.
- プレッシャー: Source pressure (requires external pressure modules, sold separately).
3.3つの高度な機能
- Auto-Step and Auto-Ramp: Perform fast linearity tests using these automated features. Consult the on-screen menu or specific function buttons for activation.
- ループ供給: The calibrator provides a 24V DC loop supply to power transmitters during testing, with simultaneous mA measurement capability.
- バックライト: Activate the backlight for improved visibility in low-light conditions.
- Store Test Setups: Frequently used test configurations can be stored and recalled for efficiency.
Figure 2: A technician utilizing the Fluke 725 to connect and calibrate industrial process equipment.
Figure 3: The Fluke 725 calibrator connected to a pressure transmitter, demonstrating its application in process calibration.
図4: クローズアップ view of the Fluke 725 calibrator held in hand, displaying measurement readings.
4. メンテナンス
4.1 電池の交換
When the battery indicator appears on the display, replace the four AA alkaline batteries promptly to ensure continued operation and accuracy. Refer to Section 2.2 for battery installation instructions.
4.2 クリーニング
To clean the calibrator, wipe the case with a damp cloth and a mild detergent. Do not use abrasive cleaners, solvents, or harsh chemicals. Ensure the device is powered off and disconnected from any circuits before cleaning.
4.3 ストレージ
Store the Fluke 725 within the specified storage temperature range of -40 °C to 71 °C (-40 °F to 160 °F). For prolonged storage, remove the batteries to prevent leakage.
5。 トラブルシューティング
If the Fluke 725 does not operate as expected, review 次の一般的なトラブルシューティング手順:
- 電源なし: Check battery installation and ensure batteries are fresh.
- 誤った読み方: Verify test lead connections, ensure correct function selection, and check for proper calibration.
- 表示の問題: If the display is dim, activate the backlight or replace batteries.
- Function Not Responding: Power cycle the unit (turn off, then on). If the issue persists, consult the manufacturer's support resources.
For specific error codes or advanced troubleshooting, refer to the official Fluke support documentation or contact Fluke customer service.
6. 仕様
| パラメータ | 範囲 | 解決 | 正確さ |
|---|---|---|---|
| 巻tage (出典) | 0～10V | 0.01V | 0.02% Rdg + 2 LSD |
| 巻tage（測定） | 0～30V | 0.01V | 0.02% Rdg + 2 LSD |
| 巻tage（測定） | 0～100mV | 0.01 mV | 0.02% Rdg + 2 LSD |
| 電流 (mA) | 0～24mA | 0.001mA | 0.02% Rdg + 2 LSD |
| mV (TC terminals) | -10.00 mV〜75.00 mV | 0.01 mV | 0.025% of range + 1 LSD |
| 抵抗 | 15〜3200オーム | 0.01〜0.1オーム | 0.10〜1.0オーム |
| Frequency (CPM) | 2.0 to 1000.0 CPM | 0.1 CPM | +/-0.05% |
| 周波数 (Hz) | 1～1000Hz | 1Hz | +/-0.05% |
| 周波数（kHz） | 1.0～10.0kHz | 0.1kHz | +/-0.25% |
| ループ供給 | 24V直流 | 該当なし | 10%の精度 |
環境および物理的仕様
- 最大巻tage: 30V
- 保管温度：-40°Cから71°C（-40°Fから160°F）
- 動作温度: -10 °C ～ 55 °C (14 °F ～ 131 °F)
- 相対湿度: 95% (10 to 35 °C), 75% (30 to 40 °C), 45% (40 to 50 °C), 35% (50 to 55 °C)
- ショック: 30g, 11ms, half-sine shock (or 1-meter drop test)
- 振動: Random, 2g, 5-500 Hz
- 安全性: CSA C22.2 No. 1010.1:1992
- バッテリー: Four AA alkaline batteries (included)
- バッテリー寿命: 25 hours typical
- 製品寸法: 10 x 7.8 x 3.3 inches; 1 Pound
7. 保証情報
The Fluke 725 Multifunction Process Calibrator comes with a three-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. For detailed warranty terms and conditions, please refer to the official Fluke warranty statement or contact Fluke customer support.
8. サポートとお問い合わせ
For technical assistance, service, or additional information regarding your Fluke 725 Multifunction Process Calibrator, please visit the official Fluke Corporation website or contact their customer support department. Contact details can typically be found on the Fluke webサイトまたは製品のパッケージ内。
メーカー: Fluke Corporation
