Expandable Manual and Auto Ranging Stick Multimeter - HS35

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Expandable Manual and Auto Ranging Stick Multimeter - HS35

The Expandable Manual and Auto Ranging Stick Meter, model HS35 is designed specifically for HVAC/R field service.










What is It?

Expandable Auto Ranging Multimeter - Designed for HVAC/R Field Service - HS35
The HS35 Expandable Manual and Auto Ranging Stick Meter includes the tests you use everyday for HVAC/R field service. Like the rest of the HS30 series, the HS35 works with all of our accessory heads. It comes equipped with a magnetic hanger, detachable silicone test leads and alligator clip probe tips for remote and easy one-handed testing, as well as the full set of built-in safety features.  This auto-ranging stick meter also includes a bar graph on the LCD for an analog feel. Technicians tell us built-in temperature with excellent compensation and capacitance ranges are a big plus. Technicians also like having the choice between manual ranging and auto ranging when hooking up to test points with the push of a button.


How Does it Work?

The HS35 is an auto or manual raning DMM and works with all Fieldpiece accessory heads enabling the user to test a wider variety of parameters from a single meter. Plus the removable tip test leads and alligator probe extensions make safe one-handed testing a snap. The k-type thermocouple port on the front of the meter allows you to test a number of HVAC parameters right there from your multimeter. As with all electrical testing, please read the Operator’s Manual and associated safety practices thoroughly before testing and adhere to industry best practices for safety when testing any current carrying device.

Auto Ranging Mode
The HS35 is an auto ranging meter and is very accurate. For this reason, when you switch to a position on the meter that auto ranges, you’re likely to see movement on the display. For example, when the dial is turned to VAC the meter will drop to the millivolts range and you’ll see an “m” on the bottom of the LCD signifying a millivolt reading. The meter is picking up very low transient voltages in the air. Close the circuit by touching the leads together away from a voltage source. You’ll see the meter zero or a very small, stable millivolt reading.

Manual Ranging Mode
Use it as a manual ranging meter by pressing the RNG button for approximately one second. You’ll see RANGE appear in the upper left corner of the LCD (display). The decimal point will move, indicating which range you are on, each time you press RNG in this mode. If you have the wrong voltage selected you will get an “OL” (Out of Range) on your display. To switch back to auto ranging press and hold the RNG button for approximately one second until “RANGE” disappears from the top left of the LCD. This eliminates the transient voltages in the air that you see in auto ranging mode unless you are in the mV range and disconnected from a voltage source.

Selecting Ranges
For DC voltage, set the meter to the VDC parameter instead of VAC (shown below). For all ranges choose a range just above the value you expect. If display reads “OL” (overload), select a higher range. If display shows less than three numbers, select a lower range for better resolution. 







DC Current







Connecting to Fieldpiece Accessory Heads



               1                                   2

Connect to Fieldpiece accessory heads by simply attaching them to the top of meter (1) or attach remotely through leads (2). For most heads, move dial to mVDC range shown (1). For the AAC clamp (ACH4), move dial to VAC range (2).

Disconnect test leads from voltage before plugging in thermocouple!
Insure the temperature being measured is stable. Maintain good contact between the thermocouple and what's being measured.
The velcro strip supplied is intended to be used as shown on the right. Tie thermocouple like this and wrap Velcro around surface to make sure bare wires are in close contact with surface being measured. This is especially helpful when taking pipe temps.
The k-type thermocouple supplied is designed with a “wrap tab” to keep the wire out of the way when not needed. Just wrap the wire around tab and pull through the hole at the top to keep in place as shown to the left. No more clutter when stored.




Features and Benefits

The HS meter series is unlike any other found in HVAC/R. We incorporate a number of safety features, both those you can and can’t see, into our meters.  In addition, the HS series accepts modular test instrument accessory heads. The HS36 is the top of the line stick meter. It includes the features and benefits that technicians tell us they need to do their job easier, better and faster:

Non-contact Voltage
With the red NCV tab on the tip of the meter close to an AC voltage, press and hold the NCV button. The NCV LED will light and the beeper will beep. The closer you get to AC voltage, the louder the beep. The NCV function is sensitive enough to detect 24VAC on thermostats.

High Voltage and Continuity Indicators
In any VAC/VDC range, when you touch a voltage greater than 30V, the beeper will beep and the red Hi-V LED will signal you. BE CAREFUL! The continuity beeper and green LED tell you if the circuit you’re testing is open or closed (using the switch position to the right of OFF).

For measuring the flame diode current in a heater control.

For motor-start and motor-run capacitors. Disconnect the capacitor from power first. Short the terminals to discharge the capacitors. Disconnect any resistors that might be between the terminals of the capacitor.

Press MIN/MAX once to begin recording MIN and MAX. Press MIN/MAX to select current reading’s MIN or MAX. Hold down for 2 seconds to exit MIN/MAX function.

Plug any K-type thermocouple directly into the meter to measure temperature. Temperature measurement will be accurate even in fast changing environments because of excellent temperature compensation. One thermocouple is included. No adapter is required.

Silicone Leads with Detachable Probe Tips
Because the wire insulation is silicone the leads will stay flexible in cold weather and will not melt if bumped by a soldering iron. When testing electrical circuits with two hands, there is a risk that a careless mistake may complete a circuit through your body and potentially cause death or injury. Detachable probes tips and the modular design of the HS36 allow you to plug V lead tip into the top of the meter, connect an alligator lead tip to COM and ground, and perform a one-hand test more easily than most any meter on the market.

And More:

  • Rugged ABS case with rubberized bumpers.
  • Built-in magnetic hanger allows you to test with one hand or no-hands.
  • Built-in lead storage.
  • Ergonomic shape fits naturally in your hand.
  • Auto power-off (APO) to conserve battery life.


Competitive Advantages

The features and benefits are the competitive advantages when it comes to the HS35.  It is a manual ranging and auto ranging meter in one. It was designed specifically for HVAC/R field service.

It wasn’t too long ago that the only multimeter you could buy was designed for lab use. Today’s HVAC/R technician can buy meters with functions and features specifically designed for field use. And, they’re more rugged, convenient, and safe. Clips for one-handed testing. Loud BEEPERS and bright LEDS to warn of dangerous voltages, even in noisy environments. Magnetic hangers. Automatic HOLD and MAX so eyes stay focused on the test point. Silicone leads. Manual ranging.

Plus modular expandability allows you to take a truckload of test instruments to the job in a bag over your shoulder.

What's Included

  • Expandable Auto Ranging Stick Multimeter - HS35
  • 400A Amp Clamp Accessory - ACH4
  • Deluxe Silicone Test Leads - ADLS2
  • Short Alligator Lead Extensions - ASA2
  • Deluxe Meter Case - ANC1
  • 9-Volt battery (installed)
  • Operator’s manual


3¾ digit liquid crystal display (LCD) with a maximum reading of 3999.
Analog bar graph: 41 segments with measurements 20 times per second.
Range (RNG): Manual ranging mode (Press for two seconds to switch between auto range and manual range)
Overrange: "OL" mark indication.
Auto power off: 30 minutes.
Operating environment: 32 to 122°F (0 to 50°C) at <70% R.H.
Storage temperature: -4 to 140°F (-20 to 60°C), 0 to 80% R.H. with battery removed.
Accuracy: Specifications good in ambient conditions of 73°F ±9°F (23°C ±5°C), <75% relative humidity.
Temperature coefficient: 0.1×(specified accuracy) per °F/°C. (32 to 64°F (0 to 18°C), 82 to 122°F(28 to 50°C)).
Power: Single standard 9-volt battery, NEDA 1604, JIS 006P, IEC 6F22.
Battery life: 300 hours typical with alkaline.
Safety: UL,CE,Cat III600V,UL61010-1,IEC/EN61010-1.

Range: -30 to 1000°F (-34 to 538°C)
Resolution: 0.1°F/°C
Accuracy: ±1°F, 32 to 120°F (0 to 49°C),
±1% + 1.5°F, -4 to 750°F (-20 to 399°C),
±2% + 4°F, -30 to -4°F (-34 to -20°C),
±2% + 4°F, 750 to 1000°F (399 to 538°C)
Sensor type: K-type thermocouple
Overload protection: 60 VDC or 30 VAC rms

Audible indication: Less than 40Ω
Response time: 500ms
Green LED will be on continuously.
Overload protection: 500VDC or AC rms

DC volts
Ranges: 400mV, 4000mV, 40V, 400V, 600V
Resolution: 0.1mV
Accuracy: ±(0.5% rdg + 2 dgt)
Input impedance: 3MΩ on V inputs, 10MΩ on mV input
Overload protection: 600VDC or AC rms
Transient protection: 6kV for 10μ sec

AC volts (50Hz - 500Hz)
Ranges: 400mV, 4V, 40V, 400V, 600V
Conversion: Average
Resolution: 0.1mV
±(1.2% rdg + 5 dgts) 50Hz ~ 60Hz on 400mV range
±(1.5% rdg + 5 dgts)
±(2% rdg + 5 dgts) on 600V range
Input impedance: 3MΩ
Overload protection: 600V DC or AC rms
Transient protection: 6kV for 10μ sec

DC current
Ranges: 400μA, 4000μA
Resolution: 0.1μA
Accuracy: ±(1.0% rdg + 2 dgt)
Voltage burden: 1V, (8V on 4000μA range)
Overload protection: 500V DC or AC rms

Ranges: 400Ω, 4kΩ, 40kΩ, 400kΩ, 4MΩ, 40MΩ
Resolution: 0.1Ω
±(1.0% rdg + 4 dgts) on 400Ω to 400kΩ ranges
±(1.5% rdg + 4 dgts) on 4MΩ range
±(3.0% rdg + 5 dgts) on 40MΩ range
Open circuit volts: -0.45VDC typical, (-1.2VDC on 400Ω range)
Overload protection: 500VDC or AC rms

Range: 400μF
Resolution: 0.1μF
Accuracy: ±(3% rdg + 5 dgts)
Overload protection: 500V DC or AC rms

Ranges: 4k, 40k, 400k, 4M, 40MHz
Resolution: 1Hz
Accuracy: ±(0.1% rdg + 3 dgts)
Sensitivity: 10Hz ~ 4MHz: > 1Vrms, 4MHz ~ 40MHz: > 2Vrms, <5Vrms
Minimum pulse width: > 25ns
Duty cycle limits: > 30% and < 70%
Overload protection: 500VDC or AC rms

Field °F calibration
For accuracies of ±1°F, calibrate to a known temperature. A glass of stabilized ice water is very close to 32°F (0°C) and is usually very convenient but any known temperature can be used.

  1. Select the 400°F range.
  2. Remove back case and hold the battery in place with a rubber band so terminals are touching.
  3. Stabilize a large cup of ice water.
  4. Immerse the thermocouple probe and let it stabilize.
  5. Adjust VR3 (lower right corner of PCB) to get close to 32°F (0°C) then adjust VR2 (left of VR3) to get within 0.1°F (0.05°C) of 32°F (0°C).
  6. To calibrate in °C, close the jumper that is to the left of VR3.