Compact loadcell transmitter

November 2001 Maintenance, Test & Measurement, Calibration

One of the smallest loadcell transmitters available on the market today, Digital Process Measurement's Model 9004 measures a neat 92 x 92 x 26 mm wide. This DIN-rail-mount, fully programmable unit is designed and manufactured in South Africa and exported to eight overseas countries.

Set-up is done via a notebook or desktop PC using DPM's Windows-based Smartnew software available from the company's website. Pre-calibration ranges can be allocated to zero and full-scale values, which can be adjusted on site via a laptop to allow for deadweight offset and deadweight span calibration.

Switchmode power supply of 95-265 V AC/DC can power up to six loadcells. Inputs are full 6-wire configuration with standard 10 V excitation, sense feedback to compensate for cable loss and mV. Output is isolated 0-10 V or 4-20 mA. The stable bridge excitation voltage is user selectable for normal or intrinsic safe applications. Loadcell sensitivity is programmable from 1,00 to 3,00 mV/V.

The precision instrumentation op-amp front-end circuit ensures high accuracy and stability. The digital filter feature allows for a stable output in noisy systems. RS232 serial interface is standard to allow connection to remote computers or RS485 (available as an option) for scada using DPM's Digibus protocol. The RS485 can handle up to 99 transmitters linked on the same bus. Other options are one or two photomos relays with programmable setpoints.

Said to be the largest manufacturer of panel meters in South Africa for the last 12 years, DPM is respected for producing internationally comparable quality products meeting all required EMC and EEC stipulations. A three-year guarantee is standard on all units.

Digital Process Measurement

(011) 462 2204

[email protected]

www.dpm.co.za

Further reading:

Microdieseling – the explosions you never hear
Maintenance, Test & Measurement, Calibration
Microdieseling is a pressure-induced thermal degradation mechanism in which entrained air bubbles are compressed so rapidly that the surrounding oil ignites, producing soot, varnish and sludge. WearCheck explains how it happens, why the damage varies, and how oil analysis detects it.

Read more...

---

Electrostatic spark discharge – when static strikes back
Wearcheck Maintenance, Test & Measurement, Calibration
WearCheck technical manager, Steven Lumley explains how static electricity accumulates in modern low-conductivity lubricants, why compact system designs and fine filtration make ESD more likely, and how to recognise the degradation it leaves behind.

Read more...

---

High-speed cameras for crash testing
Horne Technologies Maintenance, Test & Measurement, Calibration
Vision Research has expanded its Phantom C-series with two cameras optimised for crash and safety testing, offering 4 and 8 megapixel sensors rated to 170G, up to 1180 frames per second, and Phantom Academy application training planned for South Africa next year.

Read more...

---

SKF extends remanufacturing expertise to bearing clearance modification
SKF South Africa Maintenance, Test & Measurement, Calibration
Using its clearance modification expertise, SKF helped a mining equipment OEM salvage spherical roller bearing inventory that would otherwise have been scrapped, confirming a new capability within its remanufacturing services and avoiding redundant procurement.

Read more...

---

When maintenance-system compliance starts replacing plant reliability
Wearcheck Maintenance, Test & Measurement, Calibration
WearCheck ARC division manager, Annemie Willer argues that the greatest threat to effective maintenance is no longer a lack of technology, but the gradual replacement of technical judgement by CMMS compliance, leaving no one owning the machine.

Read more...

---

Automatic lubrication systems drive mobile mine machine reliability and uptime
SKF South Africa Maintenance, Test & Measurement, Calibration
SKF’s Lincoln P203 progressive lubrication systems are improving reliability and uptime on mobile machines at a Zambian gold mine, with installation of 45 units completing by October 2026.

Read more...

---

Nitration: the acid you didn’t see coming
Wearcheck Maintenance, Test & Measurement, Calibration
Nitration is as destructive as oxidation in many engines but far less understood. WearCheck technical manager, Steven Lumley explains how nitrogen oxide gases degrade lubricants, why the process is difficult to detect, and what oil analysis can reveal before damage occurs.

Read more...

---

KSB makes mechanical seals for its own pumps and other brands
Maintenance, Test & Measurement, Calibration
KSB Pumps and Valves is expanding its range of mechanical seals to fit its own pumps and competitor brands. The portfolio covers component and cartridge seals, API 682-compliant systems, slurry and high-pressure seals, and ATEX-certified solutions, supported by refurbishment and field service capabilities.

Read more...

---

Omniflex delivers ICCP systems in London
Omniflex Remote Monitoring Specialists Maintenance, Test & Measurement, Calibration
Omniflex has supplied impressed current cathodic protection systems for landmark London buildings, protecting reinforced concrete from corrosion and extending the service life of commercial, retail and heritage sites.

Read more...

---

Modernising acid cooler protection without disrupting production
Omniflex Remote Monitoring Specialists Maintenance, Test & Measurement, Calibration
Omniflex has supplied an advanced anodic protection control system to phosphate producer Foskor, replacing a legacy transformer rectifier system while maintaining uninterrupted production. The distributed PowerView CP solution provides remote monitoring and DCS integration.

Read more...

---