The B&K Precision Model 309 Digital Earth Resistance Meter manual provides detailed instructions for setting up and operating the device, including connecting test leads, selecting appropriate measurement ranges, and using features like the data hold and auto power-off functions. It also includes troubleshooting tips such as battery replacement procedures and maintenance guidelines to ensure accurate and safe operation.
Manual Overview
The B&K Precision Model 309 Digital Earth Resistance Meter manual provides detailed instructions for troubleshooting, diagnostics, and maintenance. For troubleshooting, the manual emphasizes ensuring proper connections with test leads and verifying voltage readings below 10V AC for accurate measurements. Error diagnostics include symbols on the LCD display: “B” for low battery, “DH” for data hold, and “1” for over-range indication. Calibration involves setting the function switch and range switch appropriately, pressing the push-on and timer-on buttons simultaneously, and ensuring correct current circulation, indicated by a lit LED. Maintenance includes battery replacement when the “B” symbol appears, using a screwdriver to access the battery compartment. The manual advises periodic cleaning with a damp cloth and storing the meter without batteries if unused for over 60 days. The device complies with IEC safety standards and includes a one-year limited warranty covering defects, excluding misuse or unauthorized repairs.
Quick Issues Covered
- Diagnose power-up failures with timer auto power-off feature.
- Identify low battery issues via 'B' symbol on LCD display.
- Use schematics for circuit tracing and correct lead connections.
Overview
The Model 309 Digital Earth Resistance Meter is a device designed for measuring earth voltage and resistance. It features a 2mA measuring current to conduct earth resistance tests without tripping earth leakage current breakers. The meter is battery-operated, includes an auto power-off function, and has a data hold feature. It is compact and lightweight, meeting IEC-1010-1 (EN61010-1) CAT III 200V safety standards. The manual covers safety notes, features, specifications, measuring methods, maintenance, warranty, and service information.
Specifications
- Measurement system: Earth resistance by constant current inverter, 820Hz, 2mA approx.
- Earth voltage: 0~200Vac, 40~500Hz.
- Earth resistance range and resolution: 0~20 (0.01), 0~200 (0.1), 0~2000 (1).
- Accuracy: Earth voltage + (1%rdg+2dgt), Earth resistance + (2%rdg+2dgt) or +0.1, which is greater.
- Safety standard: IEC 1010-1 (EN61010-1) CAT III 200V.
- Low battery indication: "B" symbol appears on the display.
- Data hold indication: "DH" symbol appears on the display.
- Over range indication: "1" (MSD).
- Timer (auto power off): About 3~6 minutes.
- Display: LCD 3½ digit (2000 counts).
- Power source: 1.5V(R6P)6 pieces dry batteries.
- Dimensions: 163(L)100(W)*50(D)mm.
- Weight: Approx. 410g (battery included).
- Accessories: Test leads (Red-15m, yellow-10m, green-5m), Auxiliary earth bars, Heavy case, Instruction manual.
Controls & Indicators
The front-panel controls/indicators for the Model 309 DigitalEarth Resistance Meter include:
1. Jack for “EARTH” Lead Connection
2. Operation Indicator
3. Data Hold Switch
4. Timer Off Button
5. LCD Display
6. Jack for “LINE” Lead Connections
7. Function Switch
8. Ohm Range Switch
9. Pushbutton Operation
10. Timer On Button
Installation / Setup
The source does not provide specific information on installation or setup highlights such as wiring, clearances, calibration, or prerequisites.
Operation
The manual provides the following basic usage steps for the Model 309 DigitalEarth Resistance Meter:
1. Connect the green, yellow, and red test leads to the instrument terminals E, P, and C with auxiliary earth bars P1 and C1 driven into the earth in a straight line.
2. Set the function switch to the ACV position and ensure the voltage reading is less than 10V AC for accurate earth resistance measurement.
3. Set the range switch to a suitable range, set the function switch to the desired position, then press the push-on button and timer on button simultaneously to take the reading on the display.
4. Ensure proper connection as indicated in the manual to confirm correct current circulation, indicated by a lit red LED indicator.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Read the safety notes carefully before operating or servicing the meter. Use the meter only as specified in the manual to ensure protection is not impaired. The rated environmental conditions for safe operation are indoor use, installation category III, pollution degree 2, altitude up to 2000 meters, relative humidity of 80% max, and ambient temperature between 0 to 40°C. The meter is protected by double insulation or reinforced insulation. There is a risk of electric shock, and users are cautioned to refer to the manual before using the meter. To avoid electrical shock or damage, do not get water inside the case. Periodically wipe the case with a damp cloth and detergent, and do not use abrasives or solvents. If the meter is not used for more than 60 days, remove the batteries and store them separately.
Download MANUAL Manual (PDF – 377.1 KB)
Bk-precision-309-instruction manual: assists technicians in troubleshooting and calibrating the Bk-precision-309 model. File size: 377.1 KB.
- Brand: Bk-precision-309-instruction
- Model: MANUAL
- Type: Manual
- File size: 377.1 KB
Overview
Brief overview of the product.
Specifications
- Key spec 1
- Key spec 2
Controls & Indicators
Control panel/button layout.
Installation / Setup
- Step 1…
- Step 2…
Operation
Basic usage, modes, cycles.
Troubleshooting & Error Codes
| Issue / Code | Fix |
|---|---|
| Example | How to fix… |
Safety & Warnings
- Important warning…
Downloads
Bk-precision-309-instruction MANUAL Overview
The Bk-precision-309 is a versatile and reliable piece of test equipment designed for precise electrical measurements and diagnostics. Ideal for both professional technicians and hobbyists, this device provides accurate readings and robust functionality to support a wide range of electronic testing applications.
Main Features and Specifications
- High-accuracy voltage and current measurement capabilities
- Wide measurement range suitable for multiple testing scenarios
- Clear digital display for easy reading of results
- Compact and durable design for portability and long-term use
- Multiple input protection features to ensure device safety
- Battery-powered operation for convenience in fieldwork
Basic Usage and Operation Tips
Before using the Bk-precision-309, ensure the device is properly calibrated according to the manual instructions. Connect the test leads securely to the device and the circuit under test. Always start measurements at the highest range to prevent damage. Use the function selector to choose the appropriate measurement mode, and observe the digital display carefully. Turn off the device when not in use to conserve battery life.
Troubleshooting and Maintenance
If the device fails to power on, check the battery installation and replace batteries if necessary. In case of erratic readings, verify the test lead connections and inspect for any visible damage. Regularly clean the device exterior with a soft, dry cloth and avoid exposure to moisture or extreme temperatures. For calibration or repairs, refer to authorized service centers to maintain accuracy and device integrity.
Safety Reminder
Always follow standard electrical safety procedures when using the Bk-precision-309. Avoid contact with live circuits and ensure the device is rated for the voltage levels being tested. Use insulated test leads and wear appropriate personal protective equipment. Never operate the device with wet hands or in damp environments to prevent electric shock.