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Fieldpiece HS33
Expandable Manual Ranging Stick Multimeter for HVAC/R

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Fieldpiece HS33 Shown
Product Information
Datasheet 933 KB PDF Datasheet
Manual 2.09 MB PDF Datasheet
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  • DC Volts from 0.1mV to 600V
  • AC Volts from 0.1mV to 600V
    • Test power lines (120, 220, 480)
    • Test 24V going to controls
    • Test for transformer failure
    • True-RMS for variable frequency drives
    • 400 AAC with ACH4 current head (included)
  • Frequency
  • 0.1Ω resolution for "Ohming out" a motor
  • Bright LEDs and Beepers
  • Non Contact Voltage
  • Test Motor Run/Start Capacitors
  • 1000° Temperature Range
  • 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

The Fieldpiece HS33 Expandable Manual Ranging Stick Multimeter with 3 and a 1/2 Digital Screen was designed to measure even more HVAC/R parameters including temperature with quick compensation via a k-type thermocouple plug, a diode test and a built-in non-contact voltage (NCV) tester. The updated ergonomic shape of the Fieldpiece HS33 Expandable Stick Multimeter fits firmly and naturally in your hand while testing. A magnetic hanger, along with the detachable test leads and alligator clip probe tips, allow you to remote test and perform other tests hands-free. The Fieldpiece HS33 Stick meter is what Schools and Universities prefer for their HVAC/R students. The Fieldpiece HC33 Stick Multi-meter got all the basics and more. The rugged rubberized bumpers help this meter stand up to tough conditions in the field. Ranges include VAC, VDC, AAC, ADC, temperature, capacitance (MFD) and a host of other built-in safety features.

The Fieldpiece HS33 Stick Multimeter is unique in that it’s a great "starter" meter for new field technicians as well as a top performer for veterans who prefer manual ranging digital multimeters. All Fieldpiece accessory heads slide on the top, enabling the user to test a wider variety of parameters from a single meter. All this plus the removable tip test leads make safe one-handed testing a snap.

Fieldpiece HS 33 Dial Settings/Ranges

Selecting Ranges
For DC voltage, set the Fieldpiece HS-33 Stick Meter to the VDC parameter instead of VAC. 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.

Features and Benefits

The Fieldpiece Series of HS meter 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 Fieldpiece HS series accepts modular test instrument accessory heads. The Fieldpiece HS33 Manual Ranging Stick Multimeter is the first evolution of the stick meter concept. While the function of the Fieldpiece HS33 meter is similar to the original stick meter line, we’ve updated it since its introduction to include a number of features that make the HVAC/R technicians job easier, better and safer.

Fieldpiece HS 33 Dial Settings/Ranges

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 with an analog feel 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.

The non-contact voltage feature can be used in conjunction with one probe tip to find which wire is live. With meter set to OFF, place probe tip in red plug as shown below. Hold down NCV while touching each wire, a noticeably louder buzz will sound when you’ve touched a live wire.

400 AAC Amp Clamp Accessory (Fieldpiece ACH4)
Using the included amp clamp accessory, the Fieldpiece ACH4 400AAC Current Clamp, on the 200 mVAC range allows you to read 0-400 amps directly on your meter with 0.1 resolution, 1.0 resolution on the 2000 mVAC range. Use it with the detachable test leads to remote the amp clamp and test with the blower door closed for more accurate readings.


The Fieldpiece HS-33 Stick Multi-meter can be used to test motor-start and motor-run capacitors. To use, disconnect the capacitor from power first, then Short the terminals to discharge the capacitor. To ensure the most accurate reading, Disconnect any resistors that might be between the terminals of the capacitor.

High Voltage and Continuity Indicators
When using the stick Meter, in any VAC/VDC range, when you touch a voltage greater than 30V, the Fieldpiece HS 33 beeper will beep and the red Hi-V LED will blink. The continuity beeper and green LED tell you if the circuit you’re testing is open or closed.

MAX and Data HOLD
  • Press MAX to store highest reading on the display.
  • Press MAX again to return display to real-time reading.
  • Press HOLD to hold current data on the display.

Silicone Leads with Detachable Probe Tips
Because the wire insulation is silicone, the Fieldpiece ADLS2 Deluxe Silicone Test Leads 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 Fieldpiece HS33 allows the user 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.

It wasn't too long ago that the only multimeter you could buy was designed for lab use or an electrician’s meter. However, today HVAC/R technicians can buy the Fieldpiece series of meters with functions and features specifically designed for field use. The Fieldpiece HS-33 is more rugged, convenient, and safe to use in a variety of enviroments. Clips for one-handed testing and Loud BEEPERS and bright LEDS to warn of dangerous voltages, even in noisy environments. The Fieldpiece HS33's Manual Range and Automatic HOLD and MAX helps the user remain focused on the test point.

AC Volts (50Hz - 500Hz) Function Specifications
Ranges: 200mV, 200V, 600V
Resolution: 0.1mV
Accuracy: ±(1.2% rdg + 3 dgts)
±(2.0% rdg + 5 dgts) on 600V range
Input impedance: 560kΩ on V input, 10MΩ on mV input
Overload protection: 600VDC or AC rms, 600VDC/AC rms 15 sec on 200mV range
Transient protection: 6kV for 10μ sec
DC Volts Function Specifications
Ranges: 200mV, 2000mV, 200V
Resolution: 0.1mV
Accuracy: ±(0.5% rdg + 1 dgt)
Input impedance: 1MΩ
Overload protection: 600VDC or AC rms, 600VDC/AC rms 15 sec on 200mV range
Transient protection: 6kV for 10μ sec
Diode Test Function Specifications
Test current: ~1mA
Accuracy: ±(1.5% rdg + 3 dgts)
Open circuit volts: 3.0VDC typical
Overload protection: 500VDC or AC rms
Continuity Specifications
Audible indication: Less than 100Ω
Visual indication: Green LED will be on continuously
Response time: 100ms
Overload protection: 500VDC or AC rms
Resistance Specifications
Ranges: 200Ω, 200kΩ
Resolution: 0.1Ω
Accuracy: ±(1.0% rdg + 4 dgts)
Open circuit volts: 0.3VDC typical, (3.0VDC on 200Ω range)
Overload protection: 500VDC or AC rms
Temperature Specifications
Ranges: -30 to 200°F (-34 to 93°C)
Resolution: 0.1°F/°C
Accuracy: ±1°F, 32 to 120°F (0 to 48°C), ±1% + 1.5°F, -4 to 200°F (-20 to 93°C), ±2% + 3°F, -30 to -4°F (-34 to -20°C).
Sensor type: K-type thermocouple
Overload protection: 60 VDC or 30 VAC rms
Field °F calibration
For accuracies of ±°F, calibrate the Fieldpiece HS33 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 200°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 (below battery) to get close to 32°F (0°C) then adjust VR1 (right of battery) to get within 0.1°F (0.1°C) of 32.0°F (0.0°C)
  6. To calibrate in °C, close the jumper that is just below VR1
Physical Specifications
Display: 3 1/2 digit liquid crystal display (LCD) with a maximum reading of 1999.
Overrange: "OL" mark indication.
Auto power off: approx 60 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
Accessories: One pair test leads, one pair alligator clips, k-type thermocouple (HS33), 9V battery (installed), and operating instructions
Safety: UL, CE, Cat III 600V, UL3111, IEC/EN61010-1, C-Tick certified
Ordering Information
Model Description Buy Online Price
HS33  Fieldpiece HS33 Expandable Manual Ranging Stick Multimeter for HVAC/R Buy Now Sale $132.00
(Reg. $165.00)
Included Accessories
  • 1 - 400A Amp Clamp Accessory (ACH4)
  • 1 - Deluxe Silicone Test Leads (ADLS2)
  • 1 - Short Alligator Lead Extensions (ASA2)
  • 1 - Deluxe Meter Case (ANC1)
  • 1 - 9-Volt battery (installed)
  • 1 - Operator’s manual
Optional Accessories
AHDL1 Fieldpiece AHDL1 Accessory Head Adapter Buy Now Sale $13.60
(Reg. $17.00)
Accessory Heads
AAV3 Fieldpiece AAV3 Air Velocity and Temperature Accessory Head Buy Now Sale $92.00
(Reg. $115.00)
ACDC6 Fieldpiece ACDC6 AC/DC Current Clamp Accessory Head Buy Now Sale $84.80
(Reg. $106.00)
ACH4 Fieldpiece ACH4 400A Amp Clamp Accessory Head Buy Now Sale $36.00
(Reg. $45.00)
ADMN2 Fieldpiece ADMN2 Dual-Port Manometer Accessory Head Buy Now Sale $106.40
(Reg. $133.00)
AMN2 Fieldpiece AMN2 Manometer Accessory Head Buy Now Sale $68.80
(Reg. $86.00)
AOX2 Fieldpiece AOX2 Combustion Check Accessory Head Buy Now Sale $168.80
(Reg. $211.00)
ARH4 Fieldpiece ARH4 Digital Sling Psychrometer Accessory Head Buy Now Sale $76.80
(Reg. $96.00)
ARH5 Fieldpiece ARH5 In-Duct Psychrometer Accessory Head Buy Now Sale $106.40
(Reg. $133.00)
ATH4 Fieldpiece ATH4 Dual-Temperature Accessory Head Buy Now Sale $63.20
(Reg. $79.00)
ATIR3 Fieldpiece ATIR3 Infrared Temperature Accessory Head Discontinued
AUA2 Fieldpiece AUA2 Milliamps & Microamp Accessory Head Buy Now Sale $25.60
(Reg. $32.00)
AVG2 Fieldpiece AVG2 Digital Vacuum Gauge Accessory Head Buy Now Sale $88.00
(Reg. $110.00)
AVH1 Fieldpiece AVH1 AC/DC Voltage Accessory Head Buy Now Sale $20.80
(Reg. $26.00)
ANC1 Fieldpiece ANC1 4 pocket Deluxe Meter Case Buy Now Sale $12.80
(Reg. $16.00)
ANC3 Fieldpiece ANC3 Large Briefcase-Style Instrument Bag Buy Now Sale $60.00
(Reg. $75.00)
ANC5 Fieldpiece ANC5 Mail Pouch-Style Meter Case Buy Now Sale $8.00
(Reg. $10.00)
ANC7 Fieldpiece ANC7 Large Single Meter Case Buy Now Sale $7.20
(Reg. $9.00)
ANC8 Fieldpiece ANC8 Large Deluxe Meter Case Buy Now Sale $26.40
(Reg. $33.00)
ANC9 Fieldpiece ANC9 Wireless Refrigerant Scale Case Buy Now Sale $16.00
(Reg. $20.00)