Mode of operation

Measuring principle

Belt scale integrator

Typical application

• Compatible with Milltronics belt scales or equivalent 1, 2, 4¹⁾, or 6¹⁾ load cell scales
• Compatible with LVDT equipped scales, with use of optional interface board (remotely mounted)

Inputs

Load cell

0 ... 45 mV DC per load cell

Speed sensor

• Pulse train

• 0 ... 5 V low, 5 ... 15 V high 1 ... 3 000 Hz, or
• Open collector switch, or
• Relay dry contact

Auto zero

Dry contact from external device

mA

See optional mA I/O board¹⁾

Auxiliary

5 discrete inputs for external contacts, each programmable for either: display scrolling, totalizer 1 reset, zero, span, multi-span, print, batch reset, PID function or online calibration, 2nd speed sensor

Outputs (load and speed)

mA

Programmable 0/4 ... 20 mA, for rate, optically isolated, 0.1 % of 20 mA resolution, 750 О© load max. (see optional mA I/O board)

Load cell

10 V DC compensated excitation for strain gauge type, 6 cells max, 150 mA max.

Speed sensor(s)

12 V DC, 150 mA max. excitation

Remote totalizer 1

• Contact closure 10 ... 300 ms duration
• Solid state relay contact 30 V DC, 100 mA max.
• Max. contact on-resistance = 36 ohms
• Max. off-state leakage = 1 uA

Remote totalizer 2

• Contact closure 10 ... 300 ms duration
• Solid state relay contact rated 240 V AC/DC, 100 mA max.
• Max. contact on-resistance = 36 ohms
• Max. off-state leakage = 1 uA

Relay output

5 alarm/control relays, 1 SPST Form A relay contact per relay, rated 5 A at 250 V AC, non-inductive or 30 V DC

Measuring accuracy

Resolution

0.02 % of full scale

Accuracy

0.1 % of full scale

Rated operating conditions

Ambient conditions

Location

Indoor/outdoor

Ambient temperature

-20 ... +50 °C (-5 вЂ¦ +122 °F)

Relative humidity/ingress protection

Suitable for outdoor/Type 4X/NEMA 4X/IP65

Installation category

II

Pollution degree

4

Design

Material (enclosure)

Polycarbonate

Dimensions

209 W x 285 H x 92 D mm
(8.2 W x 11.2 H x 3.6 D inch)

Weight

2.6 kg (5.7 lb)

Power supply

Standard

AC version

• 100 ... 240 V AC, ±10 %, 50/60 Hz, 55 VA max.
• Fuse FU3 = 2AG, 2 AMP, 250 V Slo Blo

DC version

• 10 ... 30 V DC, 26 W max.
• Fuse FU2 = 3.75 A resettable (not user replaceable)

Controls and displays

Displays

Illuminated 5 x 7 dot matrix liquid crystal display with 2 lines of 40 characters each

Programming

Via local keypad and/or Dolphin Plus interface

Memory

Program and parameters stored in non-volatile Flash memory, upgradeable via Dolphin Plus interface

Communications

• Two RS 232 ports
• One RS 485 port
• SmartLinx compatible

mA I/O board

Inputs

2 programmable 0/4 вЂ¦ 20 mA for PID control and on-line calibration, optically isolated, 0.1 % of 20 mA resolution, 200 О© input impedance

Outputs

2 programmable 0/4 вЂ¦ 20 mA for PID control, rate, load, and speed output, optically isolated, 0.1 % of 20 mA resolution, 750 О© load max

Output supply

Isolated 24 V DC at 50 mA, short circuit protected

Approvals

BW500

CE, CSA_US/C, FM, Measurement Canada, NTEP, MID, OIML, GOST, RCM, EAC, SABS, STAMEQ, KCC

BW500/L

CE, CSA_US/C, FM, RCM, EAC, KCC

Options

• Speed sensor: MD-36/36A, MD-256, SITRANS WS300, TASS, or RBSS, or compatible
• Dolphin Plus: Windows based software interface. Refer to associated product documentation.
• SmartLinx Modules: protocol specific modules for interface with popular industrial communications systems. Refer to product documentation.
• LVDT interface card: for interface with LVDT based scales