Overview
The Balmac 140-1 is a rugged vibration transmitter designed for continuous monitoring of industrial machinery and rotating equipment. This two-wire, loop-powered sensor converts vibration velocity into a 4-20 mA signal compatible with PLCs, DCS systems, and analog monitoring equipment. The 140-1 model covers a 0-1 in/sec (0-25.4 mm/sec) measurement range and operates reliably across diverse industrial conditions.
Key Features
- Two-wire, loop-powered design simplifies installation and wiring
- 4-20 mA proportional output for direct PLC and controller integration
- 0-1 in/sec velocity range (0-25.4 mm/sec peak)
- 1-inch NPT pipe thread mounting with UL and CSA approval for hazardous locations
- Solid-state epoxy-encapsulated circuitry with reverse voltage protection
- Frequency response: 7–1300 Hz (-3 dB); 420–78,000 RPM operation range
Technical Specifications
- Sensor Type: Velocity-type vibration transmitter
- Output Signal: 4–20 mA (4 mA = 0 in/sec; 20 mA = full scale)
- Measurement Range: 0–1 in/sec (0–25.4 mm/sec peak)
- Supply Voltage: 14–50 Vdc
- Frequency Response: 7–1300 Hz (±3 dB)
- RPM Range: 420–78,000 RPM
- Temperature Range: −20 °C to +85 °C (−4 °F to +185 °F)
- Isolation: 500 V circuit to case
- Weight: 13.6 oz (385 g)
- Mounting: 1-inch NPT pipe thread with 90-degree capped elbow conduit
- Certifications: UL and CSA approved for hazardous locations (Class I Groups A, B, C, D; Class II Groups E, F, G; Class III)
Typical Applications
The Balmac 140-1 is well-suited for continuous vibration monitoring across a wide range of rotating and reciprocating equipment:
- Centrifugal and reciprocating pumps
- Electric motors and servo drives
- Industrial fans and blowers
- Air and gas compressors
- Vibrating conveyors and process equipment
- General-purpose machinery in hazardous and non-hazardous areas
Early warning detection enables predictive maintenance planning and reduces unplanned downtime by identifying bearing wear, imbalance, and misalignment before catastrophic failure occurs.
Compatibility & Replacements
Compatible With
- Programmable Logic Controllers (PLCs) with 4–20 mA analog input modules
- Distributed Control Systems (DCS) with current input cards
- Analog vibration monitors and chart recorders
- Industrial automation platforms supporting 4–20 mA sensor signals
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The Balmac 140-1 is designed as a direct replacement for earlier Balmac 140 series models in the same velocity range. For legacy system replacements, consult installation documentation to confirm electrical and mechanical fitment.
Works With
- Studio 5000 (via standard 4–20 mA analog input scaling)
- TIA Portal (via SIMATIC analog input modules)
- Standard industrial 4–20 mA signal conditioning and display equipment
- Hazardous area wiring and control drawing B-11812-1 per Balmac specifications
