Altek 334A Miliamp Loop Calibrator
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Altek 334A is a handheld 4-20 mA loop calibrator with ±0.03% accuracy, dual source and measure capability, and overload protection to 135V AC/DC.
Product details
| Model | 334A |
| Manufacturer | Altek |
| Category | Multifunction Calibrators |
| Availability | Made to order |
Description
Overview
The Altek 334A is a handheld milliamp loop calibrator designed to source, measure, and simulate 4-20 mA transmitter signals. It provides technicians and field engineers with a compact, rugged tool for testing two-wire transmitters, verifying loop power supplies, and performing accurate current calibration in field installations and maintenance applications.
Key Features
- Sources and measures 4-20 mA current signals
- Simulates two-wire transmitters
- Accuracy: ±0.03%
- Measurement range: 0.00 to 24.00 mA
- Percentage display: -25.0% to +125.0% of 4-20 mA span
- DC voltage measurement for loop power supply verification
- Overload protection to 135V AC/DC without fuses
- Quick-Check switch for instant 4.00 and 20.00 mA output
- Powered by three 9V alkaline batteries with extended runtime
- AC adapter available for continuous bench operation
Applications
- Field calibration and testing of 4-20 mA transmitters
- Loop power supply troubleshooting and verification
- Installation and commissioning of process instrumentation
- Maintenance and validation of industrial control systems
Specifications
| Current Range (Source) | 0 to 24 mA |
| Current Range (Measure) | 0 to 24 mA |
| Accuracy | ±0.03% |
| Display Modes | Milliamp or Percent |
| Percent Display Range | -25.0% to +125.0% of 4-20 mA |
| DC Voltage Measurement | Yes |
| Overload Protection | 135V AC/DC without fuses |
| Power Source | Three 9V alkaline batteries or AC adapter |
| Quick-Check Function | 4.00 and 20.00 mA |
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Altek 334A Miliamp Loop Calibrator
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