Pukapuka Kaiwhakamahi mō te Mita Maha Mamati Mastech MS8250A

1. Kupu Whakataki

This user manual provides detailed instructions for the safe and effective operation of the Mastech MS8250A Digital Multimeter. The MS8250A is a portable, battery-powered instrument designed for measuring AC/DC voltage, iahiko AC/DC, ātete, kaha, auau, huringa mahi, diode, me te haere tonu. Kei roto hoki ngā āhuatanga o te irahiko kore-patage detection, data hold, and a display backlight.

Please read this manual thoroughly before using the device to ensure proper operation and to prevent potential hazards.

2. Nga korero haumaru

Always adhere to the following safety precautions to avoid personal injury or damage to the multimeter or the equipment under test.

• Read and understand all instructions in this manual before use.
• Kaua e neke atu i ngā uara tāuru mōrahi kua tohua mō ia mahi.
• Never use the multimeter if its casing is damaged or if the test leads are frayed or broken.
• Ensure the function switch is in the correct position for the desired measurement before connecting the test leads.
• Kia tino tupato ki te mahi me te voltagkei runga ake i te 30V AC RMS, te tihi 42V, te 60V DC ranei. Ko enei voltaghe morearea ohorere.
• The Mastech MS8250A is rated for CAT IV 600V. This rating indicates its suitability for measurements at the source of the low-voltage te whakaurunga, penei i nga mita hiko me nga taputapu whakamarumaru i te waa.
• Me momotu ngā taura whakamātautau mai i te ara iahiko i mua i te whakarerekē i te tūranga o te pana mahi.
• Whakakapia tonutia ngā pākahiko ina puta mai te tohu pākahiko iti hei whakarite kia tika ngā pānui.

3. Hua Neke Atuview

3.1 Nga waahanga matua

• Whakaatu: 4000 tatau
• Auto Ranging and Manual Ranging capabilities
• Auto Power Off function to conserve battery life
• Aratau Ine Paanga
• Kore-Whakapā Voltage (NCV) Kaitirotiro
• Diode Open voltage: 1.5v
• Continuity Buzzer: Sounds when resistance is less than 50Ω ± 20Ω
• Mahi Raraunga Pupuri
• Tohu Whakaaturanga Pūhiko Iti
• Display Backlight for visibility in low-light conditions

3.2 Multimeter Components

The Mastech MS8250A Digital Multimeter features a clear LCD display, a central rotary function switch, and multiple input jacks for test leads.

The main components include:

• Whakaaturanga LCD: E whakaatu ana i ngā pānui ine, ngā waeine, me ngā tohu rerekē.
• Pātene Mahi: Include FUNC (function select), RANGE (manual range), REL (relative measurement), HOLD (data hold), and backlight button.
• Whakawhiti Rotary: Used to select the desired measurement function (e.g., V∼, V−, Ω, A∼, A−, Diode, Continuity, NCV).
• Ngā Jack Tāuru:
• VΩHz%→←CAP: Whakauru mo te voltage, resistance, frequency, capacitance, and diode/continuity measurements.
• mAµA: Tāuru mō te miriampere me te moroitiampinenga o naianei.
• A: Whakauru mo ampere current measurements (up to 10A).
• COM: Tāuru noa (whenua) mō ngā inenga katoa.
• Pūoko NCV: Located at the top of the multimeter for non-contact voltage kitenga.

4. Tatūnga

4.1 Tāuta Pūhiko

The Mastech MS8250A requires two LR44 batteries for operation. These are typically included with the device.

1. Me whakaweto te mita maha.
2. Kimihia te taupoki o te wāhanga pākahiko kei muri o te mita maha.
3. Whakamahia he tīwiri hei wetekina i ngā tīwiri e mau ana i te taupoki pākahiko.
4. Tango kia ata tirohia te taupoki puhiko.
5. Insert two new LR44 batteries, observing the correct polarity (+ and -) as indicated inside the compartment.
6. Whakahokia te taupoki pākahiko, ka whakaukia kia mau ngā tīwiri.

Note: Always dispose of used batteries responsibly according to local regulations.

5. Nga Tohutohu Whakahaere

5.1 Mahi Whanui

• Hiko Whakaka/Weto: Rotate the function switch from the 'OFF' position to any desired measurement function to turn the multimeter ON. Rotate it back to 'OFF' to power OFF.
• Whakaweto Aunoa: The multimeter will automatically power off after approximately 15 minutes of inactivity to save battery. Press any button or rotate the function switch to resume operation.
• Auto Ranging: By default, the multimeter operates in auto-ranging mode, automatically selecting the appropriate measurement range.
• Manual Ranging: Press the 'RANGE' button to switch to manual ranging. Each press will cycle through available ranges. Press and hold 'RANGE' to return to auto-ranging.
• Pupuri Raraunga: Pēhia te pātene 'PUPURI' hei whakatio i te pānui o nāianei kei te mata. Pēhia anō hei tuku.
• Maama Whakamuri: Press the backlight button (often indicated by a light bulb icon) to turn the display backlight ON or OFF.

5.2 Nga Mahi Ine

Before any measurement, ensure the test leads are correctly inserted into the appropriate input jacks.

5.2.1 DC Voltage Ine (V−)

1. Insert the red test lead into the 'VΩHz%→←CAP' jack and the black test lead into the 'COM' jack.
2. Rotate the function switch to the 'V−' position.
3. Honoa ngā taura whakamātautau kia whakarara ki te hiko DCtage source or component to be measured.
4. Pānuihia te voltage value on the display. Observe polarity.

5.2.2 AC Voltage Ine (V∼)

1. Insert the red test lead into the 'VΩHz%→←CAP' jack and the black test lead into the 'COM' jack.
2. Rotate the function switch to the 'V∼' position.
3. Honoa ngā taura whakamātautau kia whakarara ki te hiko ACtage source or component to be measured.
4. Pānuihia te voltage uara kei runga i te whakaaturanga.

5.2.3 DC Current Measurement (A−, mA−, µA−)

1. For µA/mA: Insert the red test lead into the 'mAµA' jack and the black test lead into the 'COM' jack.
2. For A: Insert the red test lead into the 'A' jack and the black test lead into the 'COM' jack.
3. Rotate the function switch to the appropriate 'A−', 'mA−', or 'µA−' position.
4. Connect the test leads in series with the circuit to be measured.
5. Pānuihia te uara o nāianei i te whakaaturanga.

Caution: Never connect the multimeter in parallel when measuring current, as this can blow the fuse or damage the meter.

5.2.4 AC Current Measurement (A∼, mA∼, µA∼)

1. Follow the same lead connection steps as for DC Current Measurement.
2. Rotate the function switch to the appropriate 'A∼', 'mA∼', or 'µA∼' position.
3. Connect the test leads in series with the circuit to be measured.
4. Pānuihia te uara o nāianei i te whakaaturanga.

5.2.5 Te Ine Ātete (Ω)

1. Insert the red test lead into the 'VΩHz%→←CAP' jack and the black test lead into the 'COM' jack.
2. Rotate the function switch to the 'Ω' position.
3. Me mohio kua whakakorehia te hiko, te waahanga ranei i mua i te ine i te parenga.
4. Honoa nga arataki whakamatautau puta noa i te waahanga hei ine.
5. Panuihia te uara aukati kei runga i te whakaaturanga.

5.2.6 Diode Test (→←)

1. Insert the red test lead into the 'VΩHz%→←CAP' jack and the black test lead into the 'COM' jack.
2. Rotate the function switch to the '→←' position.
3. Honoa te taura whakamātautau whero ki te anode me te taura whakamātautau pango ki te cathode o te diode.
4. Ka whakaatuhia te rōrahi whakamua e te whakaaturangatage drop. Reverse the leads; the display should show 'OL' (Open Loop) for a good diode.

5.2.7 Continuity Test (→←)

1. Insert the red test lead into the 'VΩHz%→←CAP' jack and the black test lead into the 'COM' jack.
2. Rotate the function switch to the '→←' position and press the 'FUNC' button to select continuity mode (indicated by a buzzer icon).
3. Honoa nga arataki whakamatautau puta noa i te ara iahiko, i te waahanga ranei.
4. Mena kei raro iho te ātete i te 50Ω, ka tangi te buzzer, e tohu ana i te haere tonu.

5.2.8 Whakapā-kore Voltage (NCV) Rapunga

1. Rotate the function switch to the 'NCV' position.
2. Move the top part of the multimeter (where the NCV sensor is located) close to the conductor being tested.
3. Mena AC voltage is detected, the multimeter will emit an audible beep and/or flash an indicator light. The intensity of the indication may vary with voltagte kaha.

5.2.9 Relative Measurement (REL)

1. Select the desired measurement function (e.g., voltage, ātete).
2. Take a reference measurement.
3. Press the 'REL' button. The display will show '0' and subsequent measurements will be displayed as a difference from the stored reference value.
4. Press 'REL' again to exit relative mode.

6. Whakatakotoranga

The following table details the technical specifications for the Mastech MS8250A Digital Multimeter.

6.1 Whakatakotoranga Whānui

• Whakaatu: 4000 tatau
• Puna Hiko: 2 x LR44 batteries (included)
• Ahu (L x W x H): 6.3 x 3.54 x 1.97 inihi (160 x 90 x 50 mm)
• Taumaha: 1.1 Pauna (0.5 Kirokaramu)
• Whakatauranga Haumaru: CAT IV 600V

7. Tiaki

7.1 Te horoi

Hei horoi i te mita maha, murua te pouaka ki te adamp he kakahu me te hopi horoi ngawari. Kaua e whakamahia he mea whakakoi, he mea whakarewa rānei. Me whakarite kia maroke rawa te taputapu i mua i te whakamahinga.

7.2 Whakakapinga Pūhiko

When the low battery indicator appears on the display, replace the batteries as described in Section 4.1. Using the multimeter with low batteries may result in inaccurate readings.

7.3 Rokiroki

If the multimeter is not to be used for an extended period, remove the batteries to prevent leakage and potential damage to the device. Store the multimeter in a cool, dry place, away from direct sunlight and extreme temperatures.

8. Te Raru

• Kāore he Whakaaturanga, he Whakaaturanga Ngāwari rānei: Tirohia te tāutanga o te pākahiko, ā, ka whakakīia. Whakakapia ngā pākahiko mēnā e tika ana.
• Pānui hē: Ensure the function switch is set to the correct measurement type and range. Verify test lead connections. Check battery level.
• Whakaaturanga 'OL' (Tapanui) The measured value exceeds the selected range. Switch to a higher range or ensure the input is within the meter's maximum capabilities.
• Karekau Pao Tonu: Ensure the function switch is in the continuity position and the 'FUNC' button has been pressed to select continuity mode. Check test leads for damage.

If problems persist, contact Mastech customer support or your local distributor for assistance.

9. Pūtāhui me te Tautoko

For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official Mastech webpae. Ka taea hoki e koe te whakapiri tika ki te kaihoko mo te awhina.

For more information about Mastech products, visit the Mastech Store.