Detailed Product Description

INTELLIGENT ELECTROMAGNETIC FLOWMETER BFM910

• ± Range of diameter 10 to 800 mm
• Compact version IP67, remote version sensor IP67 (optionally IP68)
• Mounting of electronic unit in two work planes
• Power supply 115/230 VAC auto selectable or 24VACDC, 50/60 Hz
• Non-touch basic manual control with magnetic pointer
• Programmable datalogger and real time as standard
• Remote control RS485, RS232
• 3 programmable digital outputs, digital input, analog output 4-20mA
• Dosing feature using digital input
• Pipe and electronic self diagnostic
• LCD-indicator
• Datalogger

DESCRIPTION

Inductive flow meter BFM-910 is a device designed for measuring, indicating and storing flow and passed through volume data of conductive liquids. Flow meter BFM-910 records both positive and negative flow. As there are neither moving nor mechanical parts in the flow profile the device can be applied to measure extremely polluted liquids containing even solid

pollution. The only limitation is that the device can be used solely with conductive liquids.

Range of applications. Inductive flow meter BFM-910 is designed to be used in the chemical industry, paper industry, waterworks maintenance, waste-water maintenance etc.

Features. Inductive flow meter BFM-910 is a highly accurate and stable device. The construction of the BFM-910 indicator uses components with a long-term time and temperature stability. Configuration data is backed up and can be recovered after a power failure. The back-up structure enables data recovery in case of a partial loss of data (as a result of e.g. high level electrostatic discharge or high noise of power supplying). Internal CPU provides all functions usually built in electronic flow meters, incl. low flow rate correction, frequency response setting, bandwidth of sensitivity setting at low flow rates, etc.

Inputs / Outputs. Flow meter BFM-910 is equipped with six isolated outputs and one isolated input as standard. Digital outputs (frequency, pulse and relays) and input are user configurable. Current output 4-20 mA can be used as passive or active type. For communication are available RS232 and RS485 outputs. In version BFM-910E EX the flowmeter meets requirements of standards for equipments intended for use in potentially explosive atmospheres according to directive 94/9/EC. Sensor category is II 3G EEx nA II T5/T6.

Application: Water and wastewater flowrate and total volume measuring Chemical industry (acids, alkaline solutions)

TECHNICAL DATA

Process : Conductive liquids

Flowrange : 0,1 to 10m/s (0,02 to 5000 l/s

Output : 4-20mA, Frequency 0 to 12kHz, Pulse 0 to 50Hz, Relay contacts 100V 5A,

Communication: RS485 and RS232

Power Supply : 95- 250 VAC, 12, 24, 48 VAC/DC 50/60Hz

Load : 0 - 600Ω vid 24VDC (4-20mA utgång)

Display : Flowrate (m3/h, l/s, US. Gal/min, user) Volume (m#, l, US. Gal, user)

Positive, total, negative and auxiliary (clearable, daily) volume

Protection : IP67 (IP68 option)

Liner : Hard rubber or PTFE

Ambient.temp : -20 till +60°C (elektronik)

Processtemp : -20 till+70 °C (PTFE liner 30 till +130°C with remote electronic).

Storage.temp : -20 till 90°C

Nominal pressure : PN 10, 16 or 25

Nominal size : DN 10 to DN 1000

Configuration : Keyboard, Magnetic, RS232 or RS485

PERFORMANCE

Accuracy : ±0.25% (0,1 to 0,5 m/s 0,5%)

Datalogger : Memory up to 20 000 values

Time constant : setable 1 to 20s

Testfunctions : Status of pipe, excitation coils, and electronic unit. Diagnostic of internal

temp, Real time circuit for datalogging.

EMC : EN 61010-1, EN61010-1/A2, 97/23/EC, EN 61000 part 3-2, 3-3, EN 61000 4-3, 4-4, 4-5, 4-6, 4-8, 4-11, EN 61000 part 6-2, EN 50081-1

Electric connection : Pg. 13.5

Process connection : Flange to DN10 till DN1000 (EN1092)

ANSI (BS16.5), Sanitary (DIN11851 or Tir Clamp, Wafer style

Measuring tube : Hard rubber or PTFE, 1.4201SS

Electrodes : CrNi SS 1.4571, Hastelloy C276 or Tantalum

Indicationsplate : 316 SST

Mounting : Directly in pipe or electronic separated from measuring pipe