Measurement Instruments
Welcome to the CALMS documentation page for sensors and measurement equipment. This page serves as a comprehensive resource for all technical documentation related to the measuring equipment used in maintaining the compressed air systems. Here you’ll find data sheets, user manuals, wiring schemes, connection guides, and helpful tips for integrating sensors with CALMS devices — all in one place.
Check out the documents below to get started on sensor installation:
Current transformer Split coil 50/20mA, 5VA cl:1 , 1 x AC phase pcs
Current transformer Split coil 100/20mA, 5VA cl:1 , 1 phase pcs
Current Transformer Rogowski Split coil, 100A/4-20mA 5VA cl:1 , 1 pcs
Current Transformer Rogowski Split coil, 500A/4-20mA 5VA cl:1 , 1 pcs
CAL-POM100100 Power meter
The CAL-POM100100 is a 3-phase 400V DIN rail power meter without display, 3x500A Rogowski split-core CTs, Class 1 accuracy, and RS485 Modbus communication.

CAL-POM100200 Power meter
The CAL-POM100200 is a 3-phase 400V DIN rail power meter without display, 3x1000A Rogowski split-core CTs, Class 1 accuracy, and RS485 Modbus communication.
CAL-CTX-16 Pressure sensor
The pressure transducer measures (0–16 bar / 0–150 PSI) with 4–20 mA output, 0.5% accuracy, 12-bit resolution, and connector interface.

CAL-A10-40 Pressure sensor
The Pressure Transducer measures 0–40 bar (0–580 PSI) with 4–20 mA output, 0.5% accuracy, 12-bit resolution, and a connector interface.
CAL-S402 Thermal Flow meter
Flow meter, Modbus RTU / 4-20mA, Max flow 185 m/s, pipe DN 25-300, 1/2" Male NPT ,with connector M12, no display, Bluetooth mobile app
CAL-C-PT-PS/I Temperature sensor - Ambient wall mount application
Temperature sensor PT100 (ambient) C-PT-PS/I-30-50, -30 - +50C, 4-20 mA (wall mount design)
CAL-MWT200 Temperature sensor - Pipeline mount
Temperature sensor 0-200C, 4-20 mA, PT100, class.A, G1/2NPT, L=120mm
CAL-DEM10001 Dew Point Sensor
The Dew Point Sensor Mini is a compact and reliable sensor designed for precise moisture measurement in compressed air systems. It features a measurement range from -60°C to +20°C with an accuracy of ±2°C. The sensor supports both 4–20 mA analog output and RS485 Modbus digital communication. It operates on a 24 VDC power supply and comes housed in a durable aluminium casing. The sensor is equipped with an M8 connector and includes a 5-meter cable. It features a 1/4” female thread measuring chamber, delivered without additional fittings.
CAL-TDS100R-M2-H Ultrasonic Water Flow and Heat energy meter
· The TDS100RM2-H is a fixed ultrasonic Heat Meter for continuous
· Measurement of volumetric flow and heat energy.
· Accuracy: <1% of reading above 0.6ft/sec ( 0.2 m/sec)
CAL-VIB11001 Vibration sensor
Vibration Sensor, M12 connector, no cable, 0-20 mm/sec range, 1/4" UNF 28 Female mount
CAL-UT-750 Ultrasonic mechanical
Ultrasonic Sensor that for continuous monitoring of changes in ultrasonic amplitude. The unit offers an overall dynamic range of roughly 100 decibels, and is configured for structure borne ultrasonic detection with analog outpu 4-20mA.
S040 Atmospheric sensor with CAL-EDGE device
The S040 atmospheric sensor is connected to the CAL-EGDE device via Modbus RTU protocol. Please wire the sensor according to the device you have: