±0.75%
measurement uncertainty at reference frequency
Calibration Systems
NIST and PTB traceable calibration workstations that automate sensor verification to ISO 16063, IEC 61094, and ANSI B88.1. From full ISO 17025 lab workstations to battery-powered field kits, The Modal Shop defines the reference standard.
Calibration Reference
NIST & PTB Traceable
Compliant Standards
The Stakes
What happens when your reference drifts
Every sensor calibrated against it is wrong
Your reference standard sets the baseline for every sensor you calibrate. A drifted reference doesn't fail loudly — it silently shifts every sensitivity value it certifies.
Cascading error
Every measurement those sensors take is suspect
A 0.5% bias in your reference becomes a systematic error embedded in every data record. Fleet-wide, across months of collected data. Impossible to retroactively correct.
Data integrity
Every decision based on that data is compromised
Structural clearances, acceptance thresholds, go/no-go criteria — all built on corrupted data. The failure isn't in the sensor or the equipment. It's in the reference.
Business risk
The Modal Shop calibration systems give you a NIST and PTB traceable reference that holds. So every number downstream can be trusted.
Product Families
Calibration Platform
Accelerometer, pressure, and microphone calibration—from automated lab workstations to portable field kits.
±0.75%
uncertainty at reference freq.
Accelerometer Calibration Workstation
Automated back-to-back comparison calibrations of ICP® and charge-mode accelerometers. Six exciter options from 0.1 Hz to 20 kHz, with shock calibration to 10,000 g.
5 Hz–10 kHz
frequency coverage, battery-powered
Portable Accelerometer Calibration
Battery-powered portable systems that bring the calibration lab to your sensors in the field. Covers ICP®, charge-mode, and MEMS transducers. Aviation-specific model available.
5–80K psi
pressure range coverage
Dynamic Pressure Calibration
Five systems covering low through ultra-high pressure ranges. Step pressure, impulse, and shock tube methods. Ballistic pressure transducer calibration to 80,000 psi.
10 Hz–95 kHz
microphone calibration range
Microphone Calibration
Calibrates 1”, ½”, ¼”, and ⅛” condenser microphones by electrostatic actuator and comparison methods. Automated workstation and portable comparison calibrator options.
Specifications
Quick Comparison
| Parameter | 9155D Workstation | Portable (9140) | Pressure (99xx) | Microphone (9350C) |
|---|---|---|---|---|
| Sensor Types | ICP, charge, MEMS, capacitive | ICP, charge, MEMS | Dynamic pressure transducers | 1”, ½”, ¼”, ⅛” condenser |
| Frequency Range | 0.1 Hz – 20 kHz | 5 Hz – 10 kHz | Per method (step / impulse) | 10 Hz – 95 kHz |
| Best Uncertainty | 0.75% at 100 Hz | ±3% typical | ±1.5% – ±4.1% | Per IEC 61094-5/6 |
| Method | Back-to-back comparison | Comparison / absolute | Step, impulse, shock tube | Electrostatic / comparison |
| Standards | ISO 16063-21 | ISO 16063-21 | ANSI B88.1 | IEC 61094-5/6, IEC 60942 |
| Portability | Lab workstation | Battery-powered portable | Lab workstation | Workstation + portable kits |
NIST-Traceable
Specify the right calibration platform.
Match sensor types, accuracy requirements, and standards obligations. Our engineers will help you select the right system.