Expert™ Hydrostatic Level transmitter 700D
Expert™ 700D is created especially for level measurement in water borings. This digital version of Expert™ 700 is especially recommendable when working with Chatter datalogger.
The diameter is just 16mm which ensures that Expert™ 700D fits in most boreholes – the measured value is delivered as ModBus RS485.
Measurement of groundwater borings demands exact evaluation of levels. Expert™ 700D has an adaptable measuring area, from 0-30 up to 0-100 meters. Even in temperatures from -20 to +80◦C will you get exact measurements.
Get your stable measurements directly in your SCADA system for many years ahead. Expert™ is produced in stainless steel which protects the sensor that holds an stunning deviation by only app. 0,5 % FS per year.
- Stainless steel diaphragm, steel AISI 316L body
- 2-wire 4 – 20 mA loop powered, 10-30VDC
- Digital RS485 Modbus output
- Surge resistance
- Measuring ranges from 0 – 30 m or 0-100 m
- Nominal measuring range (mWG): 0 – 30 m 0 – 100 m
- Measuring principle: Piezo-resistive (relative pressure)
- Min. programmable range: 10m or 30m
- Max. programmable range: 30m or 100 m
- Non-standard range: Min. 0 – 10 m / Max. 0 – 300 m
- Max. overpressure: 5 bar or 20 bar
- Temperature range: -20 °C to 50 °C
- Temperature deviation, zero point: Better than ± 0.02 % / °C
- Temperature deviation, full range: Better than ± 0.02 % / °C
- Linearity / Stability: Better than ± 0.5 % FS / ± 0.1 % FS
- Measurement accuracy: Better than ± 0.25 % FS @ 10 °C to 30 °C
- Long time stability: Better than ± 0.5 % FS per year
- Materials: Stainless Steel 316L (DIN 1.4435) / Viton® / PE
- Supply voltage: 700/D 10 – 30 V DC (12 – 30 V DC for cable lengths above 100 m)
- Output signal: 700D RS485 Modbus level- and temperature transmitter signal.
- Surge protection: Supply and RS485: 200A @ 8/20 μs, Gnd/case: 2000A @ 8/20 μs
- Cable: 5 x 0,25 mm2 , shielded, PE insulation
- Cable length: ➀ 35 m or 110 m – Can be delivered with other cable lengths on request
- Enclosure: IP 68, withstands a static pressure equal to max. overpressure
- Weight (without cable): 0,2 kg
- Approvals: CE Conformity EN61000-6-1 to -6-4