Digital absolute-pressure capacitance diaphragm gauge offered in selected full scales from 0.1 to 1000 Torr. The source product record specifies analog output plus RS-485 Modbus RTU, but its heater and supply details conflict with a newer family guide and must be confirmed by ordering code.
Description
CBVAC EM1 Digital Capacitance Diaphragm Gauge
The EM1 uses a capacitance diaphragm to measure absolute pressure and adds a digital interface for control-system integration. The source product record and a newer CBVAC family guide describe materially different EM1 configurations, so the exact ordering code and datasheet are essential.
| Full-scale ranges in the source product record | 0.1, 0.25, 1, 2, 10, 20, 100, 500 and 1000 Torr |
|---|---|
| Accuracy in the source product record | ±0.12% of reading for applicable 1–1000 Torr versions; ±0.15% for 0.1–0.25 Torr versions |
| Response time in the source product record | <20 ms |
| Outputs in the source product record | 0–10 V analog plus RS-485 Modbus RTU |
| Supply described in source product record | ±15 V DC or 24 V DC, configuration-dependent |
| Newer family-guide description | Compact unheated EM1, +13 to +32 V DC, with 0–5 V or 0–10 V output options |
| Process connections listed in source product record | KF16, KF25, CF16, CF35, 8VCR, 8VCO and 1/2-inch tube |
| Maximum overpressure stated in source record | 310 kPa |
Because the available documents conflict on heating, power and outputs, this page does not present those features as universally included. Confirm the manufacturer datasheet for the exact part number, including full scale, heater status, supply, analog scaling, RS-485 connector, Modbus map and wetted materials.
Specify calibration range, traceability and destination-country acceptance separately. Never apply supply voltage or connector pinout from another EM1 revision.
