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Martel Electronics offers a diversified line of hand held and bench calibrators, process instruments, process indicators, and power supplies manufactured to the highest quality standards for the process industry and OEM applications. Computer aided design, in-house software and surface mount capability enable Martel to offer "smart products in small packages", and maintain cost effective manufacturing practices.

Their calibrators are used in industries including Calibration services, Electric utilities, Biotechnology & Pharmaceutical manufacturing, Natural gas utilities, Power generation & Processing, and Pulp & Paper manufacturing.

The Martel products include BETA Calibrators are compatible with a wide selection of calibration management software packages as well as their own calibration management software. Products include Multifunction Calibrators, Pressure Calibrators, BetaBLOK™ True Temperature Calibrators, Single Function Calibration Tools and the BetaFLEX™ Universal Modular Documenting Calibration System.

Pressure Calibrators, Digital Test Gauges

BetaGauge 330 Handheld Pressure Calibrator             Download printable brochure.

High Performance Pressure Calibrator with Integrated Electric Pump

Pressure Calibrator Features

• Integrated Electrically Operated Hand Pump Generates Pressure up to 150 PSI and Vacuum up to -12 PSI
• Also Available in a 300 PSI Range Utilizing an Integral Manual Style Pump
• Accuracy to 0.025% FS
• Operates on 8 Standard Alkaline AA Batteries
• Pt100 RTD input for Temperature Measurement with Accuracy of 0.1°C (0.2°F)
• 24 Volt Loop Power to Operate Device under Test
• Large LCD with Backlight
• External Pressure Module Interface Supports all 29 BetaPort-P Pressure Modules
• Store and Recall up to 5 User Defined Setups
• Pressure Displayed in the User's Choice of 19 Engineering Units
• Switch Test is Automatic Using Internal Sensor or External Pressure Module
• Ideal for Gas Flow Calibration (Custody Transfer) Applications

The BetaGauge 330 hand held pressure calibrator is a small lightweight calibration device that generates pressures up to 150 PSIG using a high performance integrated electric pump.

The BetaGauge 330 includes

• Premium Soft Sided Carrying Case
• Tubing and Fitting Connector and Adapter Kit
• User Manual
• NIST-traceable Calibration Certificate

The BetaGauge 330 Custody Transfer Kits include

• BetaGauge 330 Calibrator
• LTP-100A RTD Probe
• Pressure Module and BPPA-100 Adapter
• Test Leads, Test Hose & Fittings
• User Manual & NIST-traceable Calibration Certificate
• Premium Soft Sided Carrying Case 

Hand Held Pressure Calibrator

BetaGauge 330 Hand Held Pressure Calibrator - High Performance Pressure Calibrator with Integrated Electric Pump
Hand Held Pressure Calibrator Features:

• Integrated Electrically Operated Hand Pump Generates Pressure up to 150 PSI and Vacuum up to -12 PSI
• COMING SOON! High pressure version with electrically operated pump that generates pressure up to 300 psi and vacuum down to -12 psi.
• Operates on 8 Standard Alkaline AA Batteries
• Pt100 RTD input for Temperature Measurement with Accuracy of 0.1°C (0.2°F)
• 24 Volt Loop Power to Operate Device under Test
• Large LCD with Backlight
• External Pressure Module Interface Supports all 29 BetaPort-P Pressure Modules
• Store and Recall up to 5 User Defined Setups
• Pressure Displayed in the User's Choice of 19 Engineering Units
• Switch Test is Automatic Using Internal Sensor or External Pressure Module
• Ideal for Gas Flow Calibration (Custody Transfer) Applications
• Quik-Test Pressure Calibration Connectors Available

The BetaGauge 330 hand held pressure calibrator is a small lightweight calibration device that generates pressures up to 150 PSIG using a high performance integrated electric pump.

Pressure Calibration Gauge

BetaGauge PI PRO Digital Pressure Calibration Test Gauge - Digital Pressure Test Gauge. Single-Handed Process Validation
Pressure Calibration Gauge Features:

• BetaLOG™ Software Available for Logging Gauge Measurements
• 15 Standard Pressure Ranges including 10” H2O and 15,000 psig
• Absolute Pressure Ranges Available (PSIA)
• CSA Intrinsically Safe, Class 1, Div. 2; ATEX Approved
• Available with optional 24V external power input (housed in separate panel-mount-style enclosure)
• Rear mount option for panel mounting (housed in separate panel-mount-style enclosure)
• Very high accuracy compared to analog test gauges; +/-0.05% F.S.; temperature compensated.
• Temperature compensated accuracy over 0 to 50 degrees C
• Displays in 18 standard or fully custom engineering units
• Displays ambient temperature in degrees C or degrees F
• Large, backlit, 5-1/2 digit display with 0.65" high digits and 20 segment bar graph
• Rubber boot standard on all stand-alone bottom mount gauges
• Password-protected "through the keypad" calibration
• MIN/MAX recall
• Adjustable TARE zeros large system offsets
• Use-configurable damping smooths readings from pulsating/plaint air sources
• Auto shut-off for extended battery life.
• CE approved.
• Includes NIST Certificate with calibration data
• Optional Calibration Kit with Pneumatic or Hydraulic Pressure Hand Pump and Fittings

AvailableThe BetaGauge PI PRO builds on the proven performance of the BetaGauge PI with a new purpose designed Zinc-Aluminum Alloy High Pressure Cast housing. The new housing improves the environmental integrity of the gauge in a lighter and smaller yet more rugged form factor.

The pressure calibration gauge takes the concept of an analog Test Gauge, and brings it to a new level, as only MARTEL can do. The calibration gauge combines the accuracy of digital technology with the simplicity of an analog gauge, and achieves performance, ease-of-use, and a feature set unmatched in the pressure measurement world. Setup of the pressure calibration gauge is fast and straightforward, through a menu-driven display, with minimal text, and intuitive functions, that is simple enough to allow the digital test gauge to be used anywhere in the world, without the need for multilingual displays.

Ease-of-use, performance, and features set the Digital Pressure Calibration Test Gauge apart, just as you've come to expect from Martel Electronics.

Precision Digital Pressure Calibration Test Gauge

BetaGauge PIR PRO Digital Pressure Gauge - PIR PRO Reference Class Digital Pressure Gauge offers the highest accuracy in its class

Digital Test Gauge Features:

• Large, Back-lit, 5-1/2 Digit Display With 0.65" High Digits and 20 Segment Bar Graph
• Displays in 18 standard or fully custom engineering units
• Temperature Compensated Accuracy over 0 to 50°C
• Reference Class Accuracy of ±0.04% of Reading ±0.01% Full Scale
• CSA Intrinsically Safe, Class 1, Div. 2; ATEX Approved
• User Configurable Sample Rate Maximizes Measurement Performance and Battery Life
• Standard Available Pressure Ranges - 30 psi Compound, 30 psig, 100 psig, 500 psig, 1,000 psig, 3,000 psig, 5,000 psig, and 10,000 psig
• Auto Shut-off Extends Battery Life
• Auto Shut-off and Damping Functions
• Adjustable TARE Zeros Large System Offsets
• Rear Mount Option for Panel Mounting (housed in separate panel-mount-style enclosure)
• Rubber Boot Standard On All Stand-alone Bottom Mount Gauges
• Available With Optional 24V External Power Input (housed in separate panel-mount-style enclosure)
• Optional Calibration Kit with Pneumatic or Hydraulic Pressure Hand Pump and Fittings Available
• BetaLOG™ Software Available for Logging Gauge Measurements
• Includes NIST Certificate with calibration data
• CE Approved

As with the original high accuracy BetaGauge P.I. PRO gauges, the BetaGauge PIR PRO takes the concept of a simple analog Test Gauge and combines it with the accuracy of digital technology. The new Reference Class gauges provide exceptional performance with ±0.04% of reading accuracy, especially when operated below 50% of their range.

The BetaGauge PIR PRO builds on the proven performance of the BetaGauge PIR with a new purpose designed Zinc-Aluminum Alloy High Pressure Cast housing. The new housing improves the environmental integrity of the gauge in a lighter and smaller yet more rugged form factor

Modular Pressure Calibrator

BetaGauge II Modular Pressure Calibrator - Precision Documenting Modular Pressure Calibrator
The Modular Pressure Calibrator Features:

• Electrical Accuracy of ±0.01%
• Pressure Module Accuracy of ±0.025%
• Quik-Test Pressure Calibration Connectors Available
• Modular design requires BetaPort-P pressure modules for pressure measurement

The Modular Pressure Calibrator is unmatched by any device in its price range. For the majority of its available ranges, it has a typical pressure accuracy of 0.025% fullscale and an electrical accuracy of ± 0.01%. That makes it four times more precise than the instruments it is used to calibrate, including 0.10% accuracy smart pressure transmitters. Even so, the modular pressure calibrator is priced competitively, with other pressure calibrators. The closest pressure calibration devices more accurate are far more expensive - lab instruments not intended for field use, such as quartz gauges used to calibrate other calibrators. Yet, remarkably, best of class accuracy is but one of the many reasons for specifying the modular pressure calibrator.

Digital Pressure Manometer

T-140 Pressure Manometer - Precision Pressure Calibrator / Digital Manometer
Pressure Manometer Features:

• High accuracy gauge and differential capability on 10" H2O, 200 in H20, 1 PSI, 30 PSI, 100 PSI
• Rugged, dust tight, water-resistant case
• Isolated SS sensors on 300 psi and 3,000 psi units; Gauge only
• Easy to read Super-Twist LCD
• Intuitive controls make operation easy, even for infrequent users
• Powered by a common 9 Volt alkaline battery
• Supplied in neoprene sleeve; optional carrying case available.
• Includes NIST Certificate with calibration data

The digital pressure manometer is part of the Martel Electronics Tuff-Tools line of calibrators and is designed to give technicians laboratory-grade accuracy in a family of rugged, easy-to-use instruments.

The pressure manometer is available in several ranges; 10" H2O, 200" H2O and 1, 30, 100, 300, and 3,000 psi. Operation of this calibrator is made easy through the use of a sealed membrane keypad with simple controls. When combined with a Martel Pump, the Pressure Calibration Kit makes a great package to handle your pneumatic calibration requirements.

Digital Pressure Calibrator

DPC-30/100 Digital Pressure Calibrator - Precision Pneumatic Calibration System 
Digital Pressure Calibrator Features:

• Both the DPC-30 and DPC-100 Units Will Regulate Pressure From 1 to 30 psig Using Compressed Plant Air (100 psig recommended). The DPC-100 Will Also Read Static Pressure Measurements to 100psig
• 0.001 psi resolution, 0.035% accuracy
• Dual digital display - psi & mA or voltage
• Gauge, differential, and vacuum modes
• Selectable engineering units
• Pressure switch test
• Rugged case to withstand factory floor environments
• Quik-Test Pressure Calibration Connectors Available

The digital pressure calibrator is a highly accurate, digital calibrator for pneumatic field instrumentation, including valve actuators, P/I transmitters, controllers, gauges, switches, and recorders. It is especially suitable for checking 3 to 15 psi systems. Its dual precision regulators enable output of set and variable pressures to control devices, while the switching manifold allows fast selection among the pressure ports. The unit simultaneously displays pressure and either mA or VDC, and has a built in loop power supply. Accuracy is 0.035% of full scale for all ranges.

Pressure Calibrator Modules

BetaPort-P Pressure Calibrator Module - Precision Digital Pressure Modules
Pressure Calibrator Modules Features:

• 29 standard ranges
• Gauge, vacuum, absolute, compound and differential measurements from inches H2O to 10,000 psi
• Accuracy specified over 15°C to 35°C range
• Isolated and non-isolated measurements, range dependant
• .025% full scale accuracy
• Includes NIST Certificate with calibration data

The Pressure Modules offer 29 standard pressure ranges, covering gauge, vacuum, absolute, compound, and differential measurements.

All BetaPort-P Calibrator Modules are directly compatible with the BetaGuage II Modular Pressure Calibrator. When combined with the BPPA-100 Module Adapter, all BetaPort-P Modules are compatible with the: DMC1410, MC-1210, MC-1010, BetaGauge 330, BetaGauge 311A/321A, BetaGauge 301, M2001, and 3001

With the Model BPPA-100 BETA Port Pressure Adapter, the modules are fully compatible with the multifunction calibrator, process calibrator, lab calibrator, HART Communicator, and the temperature pressure calibrators.

Pressure ranges may be displayed in any of 13 user-selectable units.
Water density correction factors of 4°C, 20°C or 60°F can be selected for either water column unit.

Their units are also compatible with the full line of Fluke 700 Series Pressure Modules, excluding the Modular Pressure Calibrator and HART Communicator. 

Single Sensor Pressure Calibrator

BetaGauge 301 Single Sensor Pressure Calibrator - General Purpose Value Oriented Pressure Calibrator
Single Sensor Pressure Calibrator Features:

• One non-isolated pressure sensor
• Internal 24 Volt DC loop power supply
• External pressure module connection supports all BetaPort-P pressure modules
• Measure 24 mA or 30 Volt DC
• Large, Backlit configurable display for 1, 2 or 3 variables
• Switch test on Pressure (Internal or External)
• % Error and damping functions

The Single Sensor Pressure Calibrator is a general purpose value oriented pressure calibrator. With one internal pressure range and an available adapter for external BetaPort-P pressure modules, the possibilities are extensive.

The available internal sensor ranges are: 1, 5, 30, 100, and 300 PSI. Pressure may be displayed in the user's choice of engineering units.

Advanced Single Sensor Pressure Calibrator

BetaGauge 311A Advanced Single Sensor Pressure Calibrator - General Purpose High Accuracy Precision Pressure Calibrator
Advanced Pressure Calibrator Features:

• One isolated, stainless steel pressure sensor except for 10" H2O and 1 psi Ranges
• Temperature compensation to ensure field use accuracy
• Power-Tool-Tough Housing
• 2 Custom Engineering Units
• Enhanced Measurement Stability
• External pressure module connection supports all BetaPort-P pressure modules
• Large Backlit configurable display for 1,2 or 3 variables
• Switch test on Pressure (Internal or External)
• % Error and damping functions
• RS-232 port for remote operation
• Differential and Absolute Ranges available
• Quik-Test Pressure Calibration Connectors Available
• Included NIST Certificate with calibration data

Dual Sensor Temperature Pressure Calibrator

BetaGauge 321A Dual Sensor Temperature Pressure Calibrator - Dual sensor, triple display precision temperature pressure calibrator. The new standard of custody transfer applications.
Temperature Pressure Calibrator Features:

• Two isolated, stainless steel, pressure sensors with 0.025% F.S. accuracy
• Temperature-compensation ensures accuracy in field applications
• External pressure module connection supports all BETA Port-P pressure modules (29 ranges) for even more measurement capability
• Measure 4-20 mA input
• Measure up to 30 V DC
• Large graphic style LCD with backlight
• Switch test on pressure 1, pressure 2 or external pressure module
• Operating mode layers support simple measurements to complex applications
• Up to five frequently used setups to be stored; last setup automatically recalled on power-up
• % Error and damping functions
• Gas flow/custody transfer kit available
• NIST Certificate with calibration data

The temperature pressure calibrator provides unmatched pressure measurement flexibility over any competitive unit, setting a new standard over the venerable BetaGauge 320.

This temperature pressure calibrator provides 0.025% FS accuracy on both internal, isolated and stainless steel pressure sensors. An external pressure module connection supports all BetaPort-P pressure modules for greater measurement capability. A Pt100 RTD input is provided for temperature measurements accurate to 0.1°C (0.2°F). In addition, the temperature calibration device measures a 4-20 mA loop current and up to 30 VDC. An internal 24 Volt Loop Power Supply can power a transmitter. The temperature pressure calibrator supports up to three simultaneous measurements in any combination, including three pressure measurements.

With simultaneous display of two pressure and an RTD temperature measurement, the temperature pressure calibrator is ideal for gas flow or custody transfer calibrations.

The temperature pressure calibrator is available in two standard configurations: 15 psi/1500 psi or 30 psi/3000 psi ranges, or customized with any two ranges selected from 0.3, 1, 5, 15, 30, 100, 300, 500, 1000, 1500, 3000, 5000, or 10,000 psi. Absolute ranges of 15, 30, 100, 150, 300 PSIA. It is also available in a calibrator Kit, which includes the Calibrator, Pt100 RTD Probe, batteries, manual, NIST-traceable certificate, test leads, and hard-sided carrying case. Also available with single pressure sensor as the BetaGauge 311A.  

BetaGauge 311A-EX/321A-EX Temperature Pressure Calibrator

Intrinsically Safe Temperature Pressure Calibrator for Hazardous Area Use - Single or dual sensor, triple display precision temperature pressure calibrator. A new standard for custody transfer calibration applications in classified hazardous areas.

• IECEx and ATEX approvals included
• One or two isolated pressure sensors with 0.025% F.S. accuracy on most ranges
• Temperature-compensation ensures accuracy in field applications
• 24 available pressure ranges with 16 user selected engineering units plus 2 optional custom units
• Pt100 RTD input for 0.1°C temperature measurement
• Measure 4-20 mA
• ClearBrite ™ graphic style LCD display with backlight
• Switch test on any pressure range
• Operating mode layers support simple measurements to complex applications
• Up to five frequently used setups to be stored; last setup automatically recalled on power-up
• % Error and damping functions
• Martel 3 key menu system
• Gas flow/custody transfer kit available
• NIST Certificate with calibration data included

The intrinsically safe temperature pressure calibrator provides unmatched pressure measurement flexibility compared to any competitive unit.

This temperature pressure calibrator typically provides 0.025% of full scale accuracy on internal pressure sensors. A Pt100 RTD input is provided for temperature measurements accurate to 0.1°C (0.2°F). In addition, the calibrator measures a 4-20 mA loop current. The temperature pressure calibrator supports up to three simultaneous measurements in any combination.

With simultaneous display of as many as two pressures and an RTD temperature measurement, the temperature pressure calibrator is ideal for gas flow or custody transfer calibrations.

The temperature pressure calibrator is available customized with any two ranges selected from 0.4, 1, 5, 7, 15, 30, 100, 300, 500, 1000, 1500, 3000, 5000, or 10,000 psi or absolute pressure ranges of 15, 30, 100, 300 PSIA. It is also available in a calibrator Kit, which includes the Calibrator, Pt100 RTD Probe, batteries, manual, NIST-traceable certificate, test leads, and hard-sided carrying case. The single sensor BetaGauge 311A-EX is also available configured for differential pressure measurement in 0.4, 1, 5, 7, 30 and 100 psi ranges.