The BK Precision 625 CE manual provides detailed instructions for setting up and operating the digital Thermo-Hygrometer, including steps for removing the protective cap, setting the power switch to the desired range, and reading the display. It also covers troubleshooting tips such as addressing measurement errors due to environmental factors and provides guidance on battery replacement and sensor maintenance.
Manual Overview
The BK Precision 625 CE Thermo-Hygrometer is a portable, user-friendly device designed for measuring temperature and humidity. It features a 3½ digit LCD display and uses a thermistor for temperature sensing and a polymer capacitive sensor for humidity. The measurement range for temperature is 0°C to 60°C, with an accuracy of ±0.5°C within the 10°C to 45°C range. Humidity measurement ranges from 10% to 90% RH, with an accuracy of ±2.5% RH. The device operates on a 9V battery, indicated by an “E=” on the display when low. Troubleshooting involves checking for measurement errors due to environmental factors like drafts or condensation. Calibration and adjustments are not detailed, but maintaining sensor cleanliness and using protective caps when not in use is advised. For board-level issues, contacting BK Precision’s service department is recommended. The device includes a data hold function to freeze readings and a max hold function to capture maximum values.
Quick Issues Covered
- Low battery indication: 'E=' displayed when voltage drops.
- Temperature errors: short measurement time, external heat sources.
- Humidity errors: steam, water splashes, condensation on sensor.
Overview
The BK Precision 625 CE is a portable, compact digital Thermo-Hygrometer designed for easy one-hand operation. It features a 3½ digit liquid crystal display (LCD) and uses a thermistor as a temperature sensor and a thin polymer capacitive type sensor for measuring relative humidity. The device measures temperature in Celsius and has a range of 0°C to 60°C (32°F to 140°F) with a resolution of 0.1°C/°F. The hygrometer measures relative humidity from 10% to 90% RH with a resolution of 0.1%RH. The manual covers safety information, operating instructions, special considerations, and operator maintenance, including battery replacement and cleaning guidelines.
Specifications
- Display: 3 1/2 digit liquid crystal display (LCD) with maximum reading of 1999.
- Temperature Scale: Celsius
- Temperature Sensor: Thermistor
- Measurement Range: 0°C to 60°C / 32°F to 140°F
- Resolution: 0.1°C/°F
- Accuracy: +2.0°C on 0°C to 10°C, +0.5°C on 10°C to 45°C, +2.0°C on 45°C to 60°C, +4.0°F on 32°F to 50°F, +1.0°F on 50°F to 113°F, +4.0°F on 113°F to 140°F
- Measurement rate: 2.5 times per second, nominal
- Temperature Coefficient: 0.1 times the applicable accuracy specification per °C from 0°C to 18°C and 28°C to 55°C
- Operating environment: 0°C to 55°C at <75% relative humidity
- Storage environment: -20°C to 55°C at <80% relative humidity
- Battery: Standard 9V battery (NEDA 1604, IEC 6F22)
- Battery Life: 200 hours typical with carbon zinc battery
- Dimensions(HxWxD): 7.0"x2.58"x1.38"(178x 65.5x35mm)
- Weight: 5.8 oz (165g) including battery
- Humidity Sensor: Electronic capacitance polymer film sensor
- Measurement Range: 10% to 90% RH
- Resolution: 0.1%RH
- Accuracy: +2.5%RH (10% to 90%RH), +5.0%RH (<10%, >90%RH)
- Sensor Response Time for 90% of Total Range: 60 sec typical
- Sensor Stability: +2%RH, 2 years typical
- Sensor Hysteresis (excursion of 10% to 90% to 10% RH): +1%RH typical
- Sensor Temperature Dependence: Negligible between 0°C to 50°C
Controls & Indicators
The front-panel controls/indicators include a power switch for selecting %RH or °C or °F range, a Display Back-Light Button with “3” to turn on and “%¢” to turn off, a DATA HOLD Button to enter and exit Data Hold mode, and a MAX HOLD Button to enter and exit MAX HOLD mode.
Installation / Setup
Refer to the PDF for details.
Operation
To operate the BK Precision 625 CE Thermo-Hygrometer, follow these steps:
1. Remove the protective cap from the sensor head.
2. Set the power switch to the desired measurement range (%RH, °C, or °F).
3. Read the measurement on the display.
4. Cover the sensor head with the protective cap when not in use to extend the sensor’s life.
The device features a display back-light that can be turned on or off using the respective buttons. The Data Hold function allows you to freeze the current reading, and the Max Hold function records and updates the maximum value.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
It is recommended that you read the safety and operation instructions before using the thermometer. Do not immerse the hygrometer sensor head into liquids since this causes permanent damage to the sensor. The meter when not in use, please use protective metal cap cover the sensor head and screw it to extend sensors life. The symbol on the instrument indicates that the operator must refer to an explanation in this manual.
Download MANUAL Manual (PDF – 329.4 KB)
Bk-precision-625-instruction manual: Guide for technicians to troubleshoot and calibrate Bk-precision 625 model. PDF size: 329.4 KB.
- Brand: Bk-precision-625-instruction
- Model: MANUAL
- Type: Manual
- File size: 329.4 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-625-instruction Overview
The Bk-precision-625 is a versatile and reliable piece of test equipment designed for precise electrical measurements. Ideal for both professional technicians and hobbyists, this device offers accurate voltage, current, and resistance readings, making it essential for troubleshooting, diagnostics, and quality control in various electronic applications.
Main Features and Specifications
- Measurement Types: AC/DC Voltage, AC/DC Current, Resistance
- Display: Large, easy-to-read digital LCD screen
- Range: Auto and manual ranging options for flexibility
- Accuracy: High precision with low measurement error
- Input Protection: Built-in safeguards against overload
- Power Supply: Battery operated for portability
- Compact and lightweight design for easy handling
Basic Usage and Operation Tips
Before using the Bk-precision-625, ensure the device is powered on and the battery is sufficiently charged. Select the appropriate measurement mode and range for your application. Connect the test leads securely to the device and the circuit under test. Always start with the highest range to prevent damage and then adjust downwards for more precise readings. Keep the test leads steady during measurement to avoid fluctuating values.
Troubleshooting and Maintenance
If the device fails to power on, check the battery and replace it if necessary. In case of erratic or inaccurate readings, verify the test lead connections and inspect for any visible damage. Clean the device regularly with a dry cloth to prevent dust buildup. Avoid exposing the unit to extreme temperatures or moisture. For persistent issues, consult the detailed manual or contact authorized service support.
Safety Reminder
Always observe proper safety precautions when using the Bk-precision-625. Avoid measuring voltages beyond the specified limits and never touch exposed conductors during operation. Use insulated test leads and wear appropriate personal protective equipment when working with high voltages. Disconnect power sources before connecting or disconnecting test leads to minimize the risk of electric shock.