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Electronic Calibration Services
Measurements of voltage, amperage, or temperature are only valuable if you can place confidence in the device’s calibration.
H&H has state-of-the-art equipment that allows extremely accurate (up to 8ppm) calibration of electronic measuring equipment.
Our highly automated process limits opportunities for human error and reduces turnaround time.
In addition, should sufficient demand arise for additional calibration types, we will entertain upgrading our capabilities, so do not be afraid to ask.



DEVICES WE CALIBRATE
- Digital Multimeters (3.5 to 6.5 Digits)
- 0-1000V DC/AC Voltage
- 0–30A DC/AC Current
- Variable Resistance (Up To 1GOhm)
- Variable Capacitance (Up To 100mF)
- 1Hz – 10 MHz Frequency
- AC Current Maximum Frequency 30kHz
- Temperature Sensors
- PRT/RTD Simulation
- Thermocouple Simulation
- Thermocouple Measure
- Oscilloscopes to 350MHz
- High Current Power Supplies (Up To 60A)
- RCD/GFI
- Installation Testers
- Watt Meters
- Phase Meters
- Power Loggers
- Frequency Counters
- Chart Recorders
- Process Controllers
CALIBRATION EQUIPMENT

4010 CALIBRATOR
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DC Voltage Best 1 Year Total Accuracy | 0 – ±1025V ±8 ppm |
DC Current Best 1 Year Total Accuracy | 0 – 30A ±50 ppm |
AC Voltage Best 1 Year Total Accuracy | 20mV – 1000V, 10Hz – 1MHz ±0.015% |
AC Current Best 1 Year Total Accuracy | 20uA – 30A, 10Hz – 30kHz ±0.04% |
Resistance (Passive) Best 1 Year Total Accuracy | 0 Ohms – 1 GOhm ±8 ppm |
Resistance (Variable) Best 1 Year Total Accuracy | 0 Ohms – 1 GOhm ±100 ppm |
Capacitance (Passive) Best 1 Year Total Accuracy | 1nF – 10uF 0.25% |
Capacitance (Variable) Best 1 Year Total Accuracy | 0.95uF – 100mF 0.7% |
Frequency Best 1 Year Total Accuracy | 10Hz – 1MHz 1 ppm |
Power Best 1 Year Total Accuracy | DC/10Hz – 400Hz 0.06%/0.18% |
Temperature (PRT/RTD) Best 1 Year Total Accuracy | 2 Wire Variable/2, 3, & 4 Wire Passive ±0.08°C/±0.02°C |
Temperature (Thermocouple) | 11 Types |
Inductance Best 1 Year Total Accuracy | 1mH – 10H 0.5% |

8104 MULTIMETER
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DC Voltage | 0 – ±1025V ±4 ppm |
DC Current | 0 – ±30A ±7 ppm |
DC Current (Electrometer Input) | 10nA – ±10uA Ranges, 0.01pA Resolution ±30 ppm |
AC Voltage | 20mV – 1025V, 10Hz – 1MHz ±0.015% |
AC Current | 0 – 30A ±0.03% |
Resistance | 0 Ohms – 1 GOhm ±8 ppm |
Resistance (Electrometer) | 10 MOhms – 1T Ohm, 10V – 300V ±140 ppm |
Frequency | 10Hz – 1MHz ±5 ppm |
Temperature (PRT/RTD) | 2, 3 & 4 Wire Support for IEC 751 & ITS 90 Coefficients |
Temperature (Thermocouple) | Support for over 8 Types ±0.05°C |
PROCAL SOFTWARE
Our implementation of Transmille’s ProCal software suite provides us with a powerful easy to use complete calibration system. ProCal’s graphical interface provides clear and concise indications of the test status using their “traffic light” system. After each test step the calibration technician is greeted with either green for pass, red for fail, or orange indicating a probable fail or probable pass condition. To pair with ProCal’s clear and concise graphical interface, it also offers automated connection prompts. Which displays on screen graphics to show the technician connection diagrams between the standard and UUT. With ProCal’s exceptional ease of use, this ensures no mistakes are made during the calibration process.
With a central database of automated calibration procedures, the workflow of getting your device calibrated is simplified. The Transmille calibrator is designed to automatically output the values programmed in the selected calibration procedure. Manual selecting values is not necessary. With this advantage, our turnaround time is minimal.
Designed with ISO 9000 and ISO 17025 in mind, ProCal provides us with all the tools to perform automated calibrations and organize data and history for our customers.