Open-Fork Fast Current Testing: MESTEK FM100 / FM200 100A / 200A AC/DC Fork Meter Series in Malaysia

In crowded electrical distribution panels, compact control boxes, automotive wiring harnesses, and tight terminal blocks across Malaysia, opening traditional clamp jaws can be difficult and time-consuming. MTM Precision is proud to introduce the MESTEK FM100 and FM200 100A/200A AC/DC Open-Fork Meter Series—an innovative, ultra-compact testing tool engineered for fast, non-contact current measurements without the hassle of opening or closing a clamp trigger.

Certified to EN61010-2-032 standards with a CAT III 600V safety rating, the MESTEK FM series features a slim 10mm open-fork jaw, 4000 Counts display resolution, True-RMS signal analysis, non-contact AC voltage (NCV) detection, and thermocouple temperature testing in an ultra-lightweight 100g casing.

🌟 Key Features & Open-Fork Innovation

Open-Fork Design for Fast Non-Contact Testing: Features a fixed 10mm open fork slot that allows technicians to simply slide individual wires into the fork head for immediate AC/DC current readings—no trigger pulling required.
AC/DC Current Measurement Flexibility: Easily measure both AC and DC current up to 100A (FM100) or 200A (FM200), ideal for DC solar strings, EV charging systems, automotive electronics, and general AC electrical circuits.
Black & White vs. Color Display Options:
- FM100: Features a high-contrast Black and White LCD display for crisp readability in bright ambient lighting.
- FM200: Features a vibrant, high-definition Color Screen for enhanced visual clarity and intuitive readings in dark environments.
True-RMS Signal Processing & 4000 Counts Resolution: Delivers exact AC voltage and current readings even on non-linear waveforms produced by variable frequency drives, switching power supplies, and electronic controllers.
Ultra-Lightweight & Slim Body: Weighing only 100 grams with physical dimensions of 180 mm x 44 mm x 29 mm, it easily fits into shirt pockets, compact tool pouches, or tool belts.
K-Type Thermocouple Temperature Testing: Integrated temperature channel supporting -20°C to 1000°C (-4°F to 1832°F) for rapid thermal audits on electrical contact lugs, switches, and HVAC units.
Non-Contact AC Voltage Detection (NCV): Detects live AC voltage presence safely through wire jacketing and conduit enclosures without probe contact.

📊 Detailed Model Comparison & Technical Specifications

The MESTEK FM Series offers two specialized open-fork configurations tailored for low-to-medium AC/DC current diagnostics:

Measurement Parameter	FM100 (Black & White Screen)	FM200 (Color Screen)	Accuracy Rating
Display Screen Type	High-Contrast B&W Screen	High-Definition Color Screen	High Clarity LCD
DC Current Range	0 – 100A	0 – 200A	AC/DC Fork Sensor
AC Current Range	0 – 100A	0 – 200A	AC/DC Fork Sensor
DC Voltage Range	0 – 600V	0 – 600V	High Precision
AC Voltage Range	0 – 600V	0 – 600V	True-RMS
Resistance Range	0 – 40MΩ	0 – 40MΩ	Multi-Range
Capacitance Range	0 – 4mF	0 – 4mF	Fast Response
K-Type Temperature	-20°C to 1000°C (-4°F to 1832°F)	-20°C to 1000°C (-4°F to 1832°F)	Thermocouple Input

⚙️ Functional Features & General Hardware Specifications

Feature Overview:

Feature Metric	Technical Specification Detail
Display Counts	4000 Counts High-Resolution Display
Fork Opening Size	Φ 10 mm (Fixed Open Jaw Slot)
True-RMS Technology	Yes (AC Voltage & Current)
Continuity Buzzer	Sound Alarm (< 50Ω)
Data Hold & Backlight	Yes
Zero Clearing Function	Dedicated One-Touch ZERO Button (A~ ZERO)
NCV Detection	Yes (Non-Contact AC Voltage Sensing)
Input Impedance	1 MΩ
Auto Power Off	Yes

Hardware Specifications:

Power Battery Requirements: 2 x 1.5V AAA Batteries
Physical Unit Size: 180 mm x 44 mm x 29 mm
Unit Weight: Approximately 100 g (Ultra-lightweight design)
Safety Compliance Level: EN61010-2-032, CAT III 600V
Included Standard Accessories: Open-Fork Meter Unit, Test Leads, K-type Thermocouple Probe, AAA Batteries, User Manual, Color Gift Box

🏭 Primary Application Fields in Malaysia

Crowded Industrial Control Panels: Quick AC/DC current auditing inside densely packed PLC cabinets, relay banks, and cable gutters where traditional clamps cannot open.
Automotive & EV Diagnostics: Measuring DC current draw, parasitic battery drain, and starter circuit current up to 200A.
Commercial Building Services: Rapid load balancing checks across 3-phase circuit breaker panels and lighting distribution boards.
Solar PV & Battery Bank Maintenance: Non-invasive DC current checks on individual solar string cables and energy storage wiring.

📞 Contact & Purchasing Information in Malaysia

For product inquiries, bulk procurement, technical support, or official quotations regarding MESTEK test instruments in Malaysia, please contact MTM Precision:

Contact MTM Precision

MTM Precision Sdn. Bhd.

Showroom & Service Centre

No. 29-1 & 29-2, Jalan Bandar 18,

Pusat Bandar Puchong,

47160 Puchong, Selangor, Malaysia

Website: www.mtmpre.com.my

Email: mtmpre@yahoo.com

WhatsApp: +6016-660 7346

Office Tel: +603-80807172